JP4542003B2 - How to use reusable media - Google Patents

Description

The present invention also relates to the use how of reusable media.

  In recent years, printers, analog copying machines, digital copying machines, and printing machines using electrophotographic methods, ink jet recording methods, and thermal transfer recording methods have become widespread, and recording materials are used in large quantities. Paper generally used as a recording material is made from pulp, which is a renewable resource. However, in the paper manufacturing process, much energy is consumed in the pulping process of extracting cellulose fibers from wood and in the process of drying the paper. In some of these processes, efforts have been made to reduce the amount of carbon dioxide generated by using fossil fuels using biomass-derived fuels such as black liquor, which are residues of wood extracted from balp. However, not all processes use biomass-derived fuels. Carbon dioxide generated from fossil fuels is considered to be a causative agent of global warming, and from the viewpoint of environmental conservation, it is desirable to reduce the amount of paper used to prevent the depletion of fossil fuel resources. ing. Furthermore, if biomass-derived fuel can also be saved, it can be used for other than the paper manufacturing process.

  In recent years, the deforestation of timber to produce paper has been decreasing, but it is an important social issue to protect the forest and prevent the global environment from deteriorating by reducing paper consumption. It is.

  In addition, since paper contains inorganic components that do not burn or rot, when paper is discarded, waste that needs to be landfilled is generated at a certain rate. Finding landfills for waste has become difficult, and from this point of view, reducing paper consumption is a social issue.

  In order to deal with these problems, a method is known in which paper that is no longer needed is collected, and the collected paper is once disaggregated to a pulp state and reused in a paper mill. However, this method does not require new wood resources, but the energy required for transportation, repulping and re-papering for recovery is almost the same as when paper is produced from fresh pulp. Furthermore, paper that uses recycled pulp has quality problems such as reduced stiffness and whiteness, and blurring when printed. For high-quality paper that is generally used as information recording paper, It is necessary to keep the mixing rate of about 30%. In addition, in order to produce high-quality information recording paper with high whiteness, it is necessary to keep the ratio of pulp extracted from used paper low, to produce pulp from unused used paper, and to produce paper from new wood. Sometimes it is more expensive than you do. Furthermore, when recording materials on which information is recorded are collected and reproduced, these recording materials are distributed outside the company or outside the home, and there is a problem from the viewpoint of maintaining confidentiality and privacy.

  Therefore, as a method to solve the problem of collecting paper once used and recycling it as recycled paper, the recorded image that can be reused by removing the image on the recording material that has been used once and reproducing it. Materials and their regeneration methods are known. For example, as a method for transferring and removing an image formed on a recording material to a peeling member, Patent Document 1 uses plastic, metal, non-liquid-permeable paper, ceramics, etc. as the recording material. A method of peeling and removing an image by heating a heat-meltable image formed on a recording material with a heat-meltable release member interposed therebetween is disclosed. Patent Document 2 discloses an apparatus for transferring and removing an image formed on a recording material treated with a release agent using an endless belt having a heat-meltable resin on the surface. Yes.

  Patent Document 3 discloses erasable paper obtained by applying and drying a silicone sealant on coated paper, and erasable paper processed so that an image can be removed by attaching a tape to plain paper. In Patent Document 3, in order to prevent the erasable paper from being mistaken for plain paper and discarded, or to prevent the plain paper from being mistakenly processed by the image removing device, the machine recognizes the paper and sorts it into plain paper. In order to do this, it is described that a mark is given by printing or handwriting, or a hole is made to indicate that it can be erased on erasable paper.

  In Patent Document 4, a paper on which an image is formed by electrophotography is impregnated with a liquid containing water, and the paper and the peeling member are pressed in a heated state in a state where the adhesive force between the paper and the image forming substance is weakened. A method of peeling off and removing a heat-flexible image forming substance from paper is disclosed. In this method, since the paper fiber is swollen with a liquid containing water, a shearing force is generated between the image forming substance not swollen with the liquid, and the adhesive force between the image forming substance and the paper is weakened. For this reason, it becomes possible to transfer and peel in a state where the adhesive force between the peeling member and the image forming substance is relatively weak. However, when plain paper is used as the recording material, the image forming substance enters a recess near the surface of the paper, and the image forming substance cannot be completely removed by the reproduction process. Also, if the recording material is impregnated with a large amount of water, the dimensions of the regenerated recording material may change, wrinkles or curls may occur in the image forming apparatus or image removing apparatus, and the absorbed water may be dried. It takes a lot of energy to do. For these reasons, it is advantageous to use a reusable medium that has a relatively smooth surface and that has a good property of removing the image-forming substance even if the amount of the release liquid applied is small.

  In addition to the method of removing the image by transferring the image forming substance to the peeling member, Patent Document 5 discloses a surface of the recording material with a grindstone to reproduce the recording material on which an image is formed by electrophotography. An apparatus for rubbing and polishing is disclosed. Even when the image forming substance on the recording material is removed by such a rubbing method, it is difficult to completely remove the image forming substance if the surface of the recording material is uneven. In the method of removing the image forming material by rubbing, a reusable medium coated with an ultraviolet curable resin or the like is used in order to eliminate unevenness on the surface, reduce adhesion with the image forming material, and improve surface durability. used.

  In general, when using a recording material on which visible image information is recorded, if a plurality of recording materials on which one set of information is recorded are bound and used, the recording material related to browsing, transportation, and storage is used. The recording material is prevented from being separated, and convenience is improved. In general, staplers (staplers) and clips are used as binding tools for binding a plurality of recording materials on which information is recorded. Further, a method is also used in which a hole is punched and bound with a binding string or a binding metal fitting.

  However, if these commonly used binding tools are used to bind and use reusable media in which visible image information is recorded, various problems occur.

  When the reusable media is bound using the stapler, the needle is stabbed and bound inside the sheet-like recording material, so that when the unbound reusable media is stacked on the bound reusable media, The presence of the needle cannot be visually recognized from the side of the reusable media. For this reason, there is a problem that the user sets a reusable medium from which the needle has not been removed to the image removing apparatus. When the reusable media overlaid with the needle remaining is conveyed by the image removal device, not only the image information formed on the overlaid reusable media can be removed, but also jamming may occur or the image removal device May break down. In particular, if you use a stapler that has a flat shape that does not have a curvature in the bent portion of the stapler, called a flat type, the thickness of the bound portion will not increase. There is a high risk of setting it in the paper feed section of the image removal device. Also, when using a stapler, some tool is required to remove the staple of the stapler, and when removing the needle using the tool, the needle is bent while applying a force to the flat part of the needle. Since it is pulled out, the reusable medium is torn, and it becomes difficult to carry it by the image forming apparatus or the image removing apparatus, so that the reuse becomes difficult.

  In the method of binding reusable media using clips, pressure is applied to a plurality of reusable media, and displacement between the plurality of reusable media is prevented by a frictional force between the plurality of reusable media. In general, it is difficult to prevent displacement between recording materials unless a large pressure is applied, and the recording materials are likely to be separated during use, and in particular, when the number of recording materials to be bound increases. There is a problem that it is difficult to hold the recording material.

  In order to facilitate the removal of an image, the reusable medium has some application when the paper is used as a base, and the surface is configured to be smooth. Therefore, the friction coefficient of the reusable media is reduced, and in order to keep the relative position of the stacked reusable media from shifting, a large pressure is required and a clip that is difficult to open and close manually is required. Reusable media not only has a smooth surface, but also is processed so that the adhesive force with the image forming material is smaller than that of a general recording material in order to facilitate the removal of the image forming material. Therefore, the coefficient of friction is low. Based on the principle, the frictional force is based on the intermolecular force between the substances subject to friction, and reducing the adhesive force causes the frictional force to decrease. In particular, when the reusable media processed so that the image forming substance can be removed on both sides are overlapped, the friction coefficient is remarkably lowered.

  For this reason, holding the reusable media by sandwiching with the clip not only causes the above-mentioned problem, but when the reusable media is sandwiched with a large pressure, the surface of the reusable media is damaged when the clip is attached and detached. In some cases, it becomes impossible to remove the image of the portion, and the image cannot be reused.

  In addition, when the relative position of the reusable medium sandwiched between the clips is shifted, the reusable medium is configured to have a low adhesive force with the image forming substance. Therefore, the image forming substance formed on the reusable medium is There is a problem that a part of the image information is lost due to dropping from the reusable media. Further, the dropped image forming substance contaminates the surrounding environment and the image removing apparatus for reproduction. In particular, in an image removing apparatus in which the image forming material that has fallen adheres to the back side of the overlapped recording material and executes the removal processing of the image forming material on only one side, the pressure roller that faces the processing surface of the image forming material Contaminate.

A method of punching holes and binding with a binding string or a metal fitting is a method in which when an image is removed and an image is formed again on a reusable medium, a part of the image cannot be formed by a punch hole, or the reusable When the medium is reused, it is not always bound and used. Therefore, it is not preferable for the user to use a punched hole in a reusable medium on which image information is recorded.
JP-A-1-297294 JP-A-4-64472 JP-A-4-67043 JP-A-7-13383 Japanese Patent Laid-Open No. 4-234056

In view of the problems of the above-described conventional technology, the present invention provides a reusable medium that can suppress a reduction in the number of times the reusable medium is repeatedly used by binding and using a reusable medium on which a plurality of visible image information is recorded. an object of the present invention is to provide a use how.

  According to the first aspect of the present invention, an image forming substance is used to form an image on a reusable medium, a binding device is used to bind a reusable medium on which a plurality of the images are formed, and the image is formed. In the method of using a reusable medium including the step of removing the image forming substance from the reusable medium, the reusable medium has a cut-out portion, and the binding tool has a protrusion that can penetrate the cut-out portion; And a press-contact portion capable of press-contacting the reusable medium.

  According to the first aspect of the present invention, an image is formed on a reusable medium provided with a cutting section that fits in advance with the binding tool. Therefore, when a user binds and uses a plurality of reusable media, the cutting section is used. By using a binding tool that has a protruding portion that penetrates the reusable media and that can press-contact a plurality of reusable media, the relative movement between the reusable media that have been stacked is restricted even if they are pressed with a weak press-contact force. Therefore, it is possible to suppress the loss of images from the reusable media and to increase the number of repeated uses.

The invention according to claim 2, in use of reusable medium according to claim 1, in a state in which a plurality of reusable medium is a bound using the binding tool, the movable range of the reusable medium is relatively It is 3 degrees or less.

  According to the second aspect of the present invention, since the maximum movable range when the overlapping reusable media move is relatively 3 ° or less, translational movement and rotational movement of the stacked reusable media can be restricted.

  According to a third aspect of the present invention, in the method for using the reusable medium according to the first or second aspect, the excision portion is a hole, and the binding tool has a plurality of reusable media bound by the binding tool. It has a member which contact | abuts the end surface of the said reusable medium in a state.

  According to the invention described in claim 3, since the reusable medium having a hole as an excision portion is used, and the plurality of reusable media are bound, the end surface of the reusable medium and the binding tool come into contact with each other. Since the relative movement between the reusable media can be restricted at the portion where the end of the sheet and the binding tool come into contact with each other, it is possible to suppress the loss of images and increase the number of repeated uses.

  According to a fourth aspect of the present invention, in the method of using a reusable medium according to any one of the first to third aspects, the cut portion has a plurality of holes, and the binding tool has the plurality of holes. It has the projection part which can penetrate.

  According to the invention described in claim 4, since the reusable medium is provided with a plurality of holes, the maximum movable range when the overlapping reusable media move due to the effect of the distance between the holes even if the hole diameter is reduced. Can be reduced.

  According to a fifth aspect of the present invention, in the method of using the reusable medium according to the fourth aspect, the reusable medium is a rectangular sheet, and the plurality of holes are located in the vicinity of the corner of the reusable medium. It is provided in the direction which has a predetermined angle with respect to.

  According to the invention described in claim 5, the reusable media is a rectangular sheet, and the cut portion of the reusable media is not parallel to the sides of the rectangle in the vicinity of the corners of the rectangle, and a plurality of holes are provided obliquely. Therefore, a plurality of reusable media can be bound obliquely, and when the user browses the reusable media that is stacked, the fold marks generated in the binding portion are light, and the image removing device or the image forming device In addition, the occurrence of skew and jam can be suppressed, and the number of times the reusable medium can be used repeatedly can be increased.

  According to a sixth aspect of the present invention, in the method of using a reusable medium according to any one of the first to fifth aspects, the reusable medium reduces adhesiveness with the image forming substance on a substrate. It has a composition, The said base material is the paper containing a cellulose fiber, It is characterized by the above-mentioned.

  According to the invention described in claim 6, since the reusable medium is made of paper mainly composed of cellulose fibers, the environmental load can be reduced.

  A seventh aspect of the present invention is the method of using the reusable medium according to any one of the first to sixth aspects, wherein the reusable medium has reduced adhesion to the image forming substance on both sides of the substrate. It is characterized by having a composition to make.

  According to the seventh aspect of the present invention, since the composition for reducing the adhesiveness to the image forming substance is formed on both sides of the reusable medium, the use of both sides increases the number of times the reusable medium is repeatedly used. can do.

  The invention according to claim 8 is the method of using a reusable medium according to any one of claims 1 to 7, wherein the image is formed on one side of the reusable medium in the step of forming the image. And

  According to the eighth aspect of the present invention, an image is formed on one side of the reusable media in one use during repeated use. Therefore, the image removing device removes the image forming substance on one side. Further, it is possible to use an image removing device that suppresses transfer of the image forming substance to the pressure member and contaminates it, and that is inexpensive and has a simple structure.

The invention according to claim 9 is the method of using the reusable medium according to any one of claims 1 to 8, wherein the image forming substance is a powder containing a thermoplastic resin and a color material, In the image forming step, the powder is thermally fixed to the reusable medium. According to the invention of claim 9, the image forming substance is composed of at least a thermoplastic resin and a coloring material. Since powder is used and the image forming substance is thermally fixed to the reusable medium at the time of image formation, as a method of removing the image forming substance from the reusable medium, the image forming substance formed on the reusable medium is heated on the peeling member. It is possible to adopt a method of adhering, peeling and transferring from the reusable media, and removing the image forming material on the reusable media. can do.

  A tenth aspect of the present invention is the method of using a reusable medium according to any one of the first to ninth aspects, wherein the image forming substance is removed from the reusable medium in the step of removing the image forming substance. It is characterized by being transferred to.

  According to the tenth aspect of the present invention, as a method for removing the image forming substance from the reusable medium, the image forming substance formed on the reusable medium is thermally bonded to the peeling member and peeled and transferred from the reusable medium for removal. Therefore, the image forming substance on the reusable medium can be removed and the number of times the reusable medium can be repeatedly used can be increased.

According to the present invention, is to provide the use how the reusable medium capable of suppressing a reduction in repeated use number of reusable medium by using by binding a plurality of reusable medium the visible image information is recorded it can.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  The method of using the reusable medium of the present invention includes a step of forming an image on a reusable medium using an image forming material, a step of binding a reusable medium on which a plurality of images are formed using a binding tool, and a reusable on which an image is formed. Removing the image forming material from the media. Here, the reusable medium has an excision part, and the binding tool has a projection part that can penetrate the excision part and a press-contact part that can press-contact the reusable medium. Note that an image can be formed again on the reusable media reproduced in the step of removing the image forming substance, and the formation and removal of the image can be repeated.

  In the present invention, as a method for forming an image on a reusable medium using an image forming substance, electrophotographic recording method, thermal transfer recording method, ink jet recording method and relief printing, intaglio printing, offset printing, screen printing, stencil printing, etc. The printing method is mentioned.

  As an image forming material used in the electrophotographic recording method, a colored powder having a color material, or a liquid material in which a composition having a color material is dispersed in a liquid alkane compound, silicone oil, natural oil, water, or the like. Any of the image forming substances can be applied to the present invention.

  Further, as an electrophotographic recording method, in addition to a method of forming an electrostatic latent image on a photoconductor having a photoconductive layer and making it a visible image with an image forming substance, a needle is applied to the electrostatic recording body having a dielectric layer. A method can be used in which a charge image is formed by applying an electric charge by an electrode, an electron flow, an ion flow, or the like, and a visible image is formed by an image forming substance. Further, a method called toner jet in which movement of the image forming substance is controlled by an electrode or a grid can be used, and any recording method can be applied to the present invention.

  In addition to the electrophotographic recording method, a thermal transfer recording method, an ink jet recording method, and a printing method for transferring and recording a heat-meltable ink applied to an ink ribbon onto a recording material can be used. Also when used, it can be applied to the present invention.

  As the ink jet recording method, it is particularly preferable to use a hot melt ink jet recording method in which a hot melt ink is melted and ejected from a nozzle for recording.

  The image forming material used in the present invention is not particularly limited, but in order to remove the image forming material on the reusable medium, an image having thermoplasticity that can be removed by thermal transfer to a peeling member. It is preferred to use a forming substance.

  The image forming substance having thermoplasticity preferably contains a thermoplastic resin, but the content of the thermoplastic resin in the image forming substance is preferably 50 to 99.5% by weight, and preferably 80 to 97% by weight. % Is more preferable.

  As the thermoplastic resin, compounds known as electrophotographic toner materials or hot melt ink materials can be used. Specifically, polyester resin, polystyrene, poly (p-chlorostyrene), styrene-p-chlorostyrene copolymer, styrene-propylene copolymer, styrene-vinyltoluene copolymer, styrene-vinylnaphthalene copolymer. Styrene-methyl acrylate copolymer, styrene-ethyl acrylate copolymer, styrene-butyl acrylate copolymer, styrene-octyl acrylate copolymer, styrene-methyl methacrylate copolymer, styrene-methacrylic acid Ethyl copolymer, styrene-butyl methacrylate copolymer, styrene-α-chloromethyl methacrylate copolymer, styrene-acrylonitrile copolymer, styrene-vinyl methyl ketone copolymer, styrene-butadiene copolymer, styrene -Isoprene copolymer, styrene-acrylic Ronitrile-indene copolymer, styrene-maleic acid copolymer, styrene-maleic acid ester copolymer, polymethyl methacrylate, polybutyl methacrylate, polyvinyl chloride, polyvinyl acetate, polyethylene, polypropylene, epoxy resin, epoxy Examples include polyol resin, polyurethane, polyamide, polyvinyl butyral, polyacrylic acid resin, rosin, modified rosin, terpene resin, aliphatic or alicyclic hydrocarbon resin, and aromatic petroleum resin.

  In the present invention, in order to form an image by the electrophotographic recording method and obtain good fixing and removal characteristics of the image forming substance, the glass transition point (Tg) of the thermoplastic resin contained in the image forming substance, the melting temperature, Viscoelastic properties are important.

  The glass transition point of the thermoplastic resin is preferably 40 to 100 ° C, more preferably 50 to 70 ° C. Accordingly, the image forming substance can be thermally fixed at a relatively low temperature and removed from the reusable medium. Also, the storage stability of the image forming substance is good.

The storage elasticity of the thermoplastic resin is preferably 80 ° C. or higher, more preferably 90 to 160 ° C., at a temperature of 10,000 dyne / cm ^{2 at} a measurement frequency of 20 Hz.

  In the present invention, the thermoplastic resin is preferably a polyester resin or a styrene-acrylic resin. As a result, an image forming substance having the above-described physical property values in a favorable range and having an appropriate adhesive force to the reusable medium can be obtained. Therefore, good fixing characteristics and image removal characteristics can be obtained, and changes in the fixing characteristics and image removal characteristics can be reduced even when image formation and image removal are repeated.

  The image forming substance can form a colored image by containing a coloring material. Either a dye or a pigment may be used as the color material. Examples of the color material include black pigments such as carbon black and iron oxide, C.I. I. Pigment yellow 12, C.I. I. Pigment yellow 13, C.I. I. Pigment yellow 14, C.I. I. Pigment yellow 15, C.I. I. Pigment yellow 17, C.I. I. Pigment yellow 93, C.I. I. Pigment yellow 94, C.I. I. Pigment yellow 138, C.I. I. Pigment yellow 155, C.I. I. Pigment yellow 156, C.I. I. Pigment yellow 180, C.I. I. Yellow pigments such as CI Pigment Yellow 185, C.I. I. Pigment red 2, C.I. I. Pigment red 3, C.I. I. Pigment red 5, C.I. I. Pigment red 16, C.I. I. Pigment red 48: 1, C.I. I. Pigment red 53: 1, C.I. I. Pigment red 57: 1, C.I. I. Pigment red 122, C.I. I. Pigment red 123, C.I. I. Pigment red 139, C.I. I. Pigment red 144, C.I. I. Pigment red 166, C.I. I. Pigment red 177, C.I. I. Pigment red 178, C.I. I. Magenta pigments such as CI Pigment Red 222; I. Pigment blue 15, C.I. I. Pigment blue 15: 2, C.I. I. Pigment blue 15: 3, C.I. I. Pigment blue 16, C.I. I. And cyan pigments such as CI Pigment Blue 60.

  The content of the color material in the image forming substance (powder) is preferably 0.5 to 20% by weight, more preferably 1 to 10% by weight.

  The image-forming substance can contain various compounds as required. For example, the image forming substance for electrophotography can contain known materials such as a charge control agent, a release agent, and an external additive.

  Examples of charge control agents include nigrosine dyes, triphenylmethane dyes, molybdate chelate pigments, rhodamine dyes, alkoxy amines, quaternary ammonium salts, fluorine activators, metal salts of salicylic acid, metal salts of salicylic acid derivatives, etc. Is mentioned.

  The release agent can suppress adhesion (hot offset) of the image forming substance to the heat fixing roller or the fixing belt in the fixing device. Specifically, waxes having a melting point of 60 to 110 ° C. such as carnauba wax, montan wax, beeswax, paraffin wax, and microcrystalline wax can be used. By using the image forming substance containing less than 10% by weight of the release agent, the change in fixing property can be reduced and the image forming substance can be removed even if the image formation and removal are repeated on the reusable medium.

  The external additive ensures the fluidity of the image forming substance (powder), stabilizes the supply of the image forming substance to the developing device, and improves the stirring property of the image forming substance in the developing device. Development characteristics can be obtained and chargeability can be assisted, and it is usually added so as to cover the surface of the image forming substance. External additives include silica, alumina, titanium oxide, barium titanate, magnesium titanate, calcium titanate, strontium titanate, zinc oxide, tin oxide, silica sand, clay, mica, wollastonite, diatomaceous earth, oxidation Examples thereof include inorganic fine particles such as chromium, cerium oxide, bengara, antimony trioxide, magnesium oxide, zirconium oxide, barium sulfate, barium carbonate, calcium carbonate, silicon carbide, and silicon nitride.

  The primary particle diameter of the inorganic fine particles is preferably 2 to 500 nm, and more preferably 5 to 50 nm.

  The content of the inorganic fine particles in the image forming substance (powder) is preferably 0.01 to 5% by weight, and more preferably 0.01 to 2.0% by weight.

  In the present invention, the image forming substance may be a developer used in a liquid developing method, a thermal transfer ribbon ink, or a solid ink having thermoplasticity used in an ink jet method.

  The particle diameter of the image forming substance (powder) is not particularly limited, but the volume average particle diameter is preferably 3 to 15 μm. As a result, a good image is formed on the reusable medium and the image can be removed.

  As a method for producing an image forming substance (powder), a polymerization method is known in addition to a conventional pulverization method. The powder produced using the polymerization method can be controlled in shape and can have a structure close to a sphere, unlike the powder having a corner portion produced using the pulverization method. In other words, the particle size distribution, shape distribution, and chargeability distribution of the image-forming substance can be controlled by the polymerization conditions and the particle aggregation conditions, so that the image-forming substance produced by the polymerization method has high image quality. And reliability can be improved.

  In the present invention, any image-forming substance produced by a pulverization method or a polymerization method such as dispersion polymerization or suspension polymerization can be used.

  In the present invention, a known method can be applied as a method of removing the image forming substance from the reusable medium. As a method for removing the image forming substance, there is a method for removing the image forming substance by transferring the image forming substance formed on the reusable medium to a peeling member. As the peeling member, a member having an adhesive composition on the surface can be used. When a thermoplastic or heat-meltable image forming material is used, the image forming material is heated and transferred to a peeling member such as a metal such as aluminum, nickel, or stainless steel, or a plastic such as polyethylene terephthalate, polyimide, or polyamide. By doing so, the image forming substance can be removed.

  As another method of removing the image forming material from the reusable media, a surface of the reusable media on which the image is formed is rubbed with a brush, a blade, an abrasive having an uneven surface, or the like to remove the image forming material. A rubbing removal method is mentioned.

  Further, the reusable medium on which the image is formed is washed in an aqueous solvent containing a surfactant or in an organic solvent by rubbing with a roller having a brush, blade, cotton cloth or the like on the surface to form an image forming substance. A method of removing can also be used.

  In the present invention, any of the above-mentioned methods for removing the image forming substance can be used, but it is preferable to use a method for removing the image forming substance by transferring it to a peeling member. Specifically, using a thermoplastic or heat-meltable image forming material, the image forming material formed on the reusable medium is adhered to the peeling member, and the peeling member and the reusable medium are separated to form an image. Material can be removed. As a result, the image forming substance formed on the reusable medium can be removed, and an image removing apparatus having a simple configuration can be used.

  Before transferring the image forming substance to the release member, an aqueous solvent containing a surfactant or an image removal accelerating liquid containing an organic solvent may be applied to weaken the adhesive force between the image forming substance and the reusable medium. Alternatively, the wax may be melted and applied. Thereby, it is possible to use a reusable medium having high fixability.

  In the present invention, in order to make the image removing device simple, it is preferable to remove the image forming material formed on the reusable medium without applying the image removal promoting liquid.

  In the present invention, the reusable medium is a recording material from which an image forming substance can be removed, and is distinguished from recording materials such as commonly used fine paper, medium paper, art paper, synthetic paper, and plastic film. The Specifically, it is possible to use a base material such as paper, synthetic paper, plastic film or the like provided with a composition having a fixing strength with an image forming substance lower than that of a general recording material. . If the image-forming substance penetrates from the surface of the recording material into the interior or enters the recess, it is difficult to remove the image-forming substance. Therefore, a composition that suppresses the penetration and entry of the image-forming substance is provided on the substrate. It is preferable to use those obtained.

  Specific examples of reusable media include a sheet on which a composition containing a silicon compound such as a silicone resin and a silane coupling agent is provided on a substrate, and waxes such as carnauba wax, beeswax, polyethylene wax, and microcrystalline wax. A sheet comprising a composition comprising a substrate, a acrylate ester having a fluorinated alkyl group, a polymer of a methacrylate ester, and a composition comprising a surfactant having a fluorinated alkyl group Based on the composition containing the sizing agent, paper made by increasing the amount of sizing agent added to the sheet, alkyl ketene dimer, alkenyl succinic anhydride, etc. Sheets provided on the material, surfactants containing higher alkyl groups and alkenyl groups, and olefin-anhydrous maleic Composition comprising a saponified product of phosphate copolymers sheet or the like provided on the substrate. Especially, it is preferable to use the sheet | seat in which the composition containing the saponification product of an olefin-maleic anhydride copolymer was provided on the base material. This makes it possible to adjust the adhesiveness between the image forming material and the reusable medium appropriately, and can remove the image forming material while ensuring the fixing property of the image forming material. Excellent. Furthermore, the safety at the time of manufacture can be improved by setting it as the coating liquid which used water as the medium.

  In the present invention, the reusable media may be provided with a resin-containing composition on a substrate. Thereby, the surface of reusable media can be smoothed. Furthermore, the adhesiveness of the image forming substance can be adjusted, and the compound contained in the composition can be fixed. Examples of the resin include acrylic resin, polyvinyl alcohol, carboxymethyl cellulose, ethyl cellulose, polyacrylamide, polyvinyl acetate (emulsion), styrene-butadiene copolymer (emulsion), starch, oxidized starch, and esterified starch.

In the present invention, the base material of the reusable media is not particularly limited, but paper, synthetic paper, plastic film, and the like can be used. When a composition for reducing the adhesive strength with an image forming substance or suppressing the penetration and intrusion of the image forming substance is applied to plain paper having no sealing layer, the dry adhesion amount is low. is preferably 0.5 to 15 g / ^{m 2,} more preferably 2.0 to 6.0 g / ^{m 2.} When dry coverage is less than 0.5 g / m ^2, the image forming substance in the recess or hole in the vicinity of the surface of the plain paper penetration, it becomes easy to enter, it becomes difficult to remove the image forming substance, reusable The number of repeated media use may decrease. On the other hand, if the dry adhesion amount is more than 15 g / m ^2, it may be difficult to ensure the fixing property of the image forming substance. In addition, the surface smoothness of the reusable media may become too high, and it may be difficult to transport the paper with the image forming apparatus or the image removing apparatus.

  In the present invention, reusable media based on synthetic paper or plastic film can also be used. However, these are usually made from fossil resources, so that the environmental load increases. In addition, in an electrophotographic recording type image forming apparatus, electrostatic force acts between reusable media due to charging, so that stacking of reusable media may be difficult at the discharge portion of the image forming apparatus or the image removing apparatus. .

  In the present invention, the reusable medium is provided with a composition for reducing adhesion strength with an image forming substance or suppressing penetration and intrusion of the image forming substance after providing a sealing layer on the paper. Even better. As the sealing layer, a material obtained by dispersing kaolin, clay, calcium carbonate, zinc oxide, titanium oxide, barium sulfate, crosslinked polystyrene, crosslinked polyacrylic resin, or the like in the above resin can be used.

When using synthetic paper, plastic film or paper with a sealing layer as the base material, a composition for reducing the adhesive strength with the image forming substance or suppressing the penetration and intrusion of the image forming substance Even if the adhesion amount of the object is reduced, the composition can be uniformly formed on the substrate. Therefore, in this case, the image forming substance can be removed even if the dry adhesion amount of the composition is less than 0.5 g / m ² .

  The reusable medium according to the present invention has a cut portion, and the cut portion is a notch or a hole. In addition, it is preferable that the reusable medium is a rectangular sheet and a hole is provided in the vicinity of the corner.

  FIG. 1 shows an example of the reusable medium of the present invention. Here, holes 11 are provided near the corners of the rectangular reusable medium 10. 1A, 1B, 1C, and 1D, the shape of the hole 11 is a circle, a square, and a rectangle, respectively. 1B and 1C, the side of the hole 11 is provided so as to be parallel to the side of the reusable medium 10. In FIG. 1D, the reusable medium 10 on the side of the hole 11 is provided. The angle of rotation with respect to the side of is 45 °.

  2 and 3 show other examples of the reusable medium of the present invention. Here, a plurality of holes 11 are provided near the corners of the rectangular reusable medium 10.

  In the reusable medium 10 provided with one hole, when the shape of the hole 11 is a circle as shown in FIG. 1A, or when the projection of the binding tool is too small with respect to the hole diameter, a plurality of reusable media 10 are used. When the media 10 are overlapped and bound, the reusable media 10 rotates about the projection of the binding tool as a rotation axis, so that the position is relatively easily displaced, and the image forming material on the stacked reusable media 10 may fall off. is there. If the image forming material on the reusable medium 10 falls off, the image is lost and cannot be read. Further, in a system in which an image is formed only on one side of the reusable medium 10 and the image forming material is removed, the dropped image forming material is attached to the back surface of the reusable medium 10 that has been superimposed, and is attached to the back surface of the reusable medium 10. The image forming substance may fall off in the conveyance path of the image removing apparatus and adhere to the conveyance parts. Further, when the conveyance path of the image removing apparatus is contaminated with the image forming material, the reusable medium 10 without the contamination may be contaminated when the image forming material is removed.

  In order to suppress the occurrence of such a problem, it is preferable to provide a plurality of holes 11 in the reusable medium 10 and bind with a binding tool having a plurality of protrusions as shown in FIGS.

  In FIG. 2, the reusable medium 10 is provided with two holes 11a and 11b. For this reason, when the reusable medium 10 is overlapped and bound, the protrusions of the binding tool are used through the holes 11a and 11b of the reusable medium 10 so that the shift between the reusable media 10 can be suppressed.

  In FIG. 3, the reusable medium 10 is provided with three or four holes 11a, 11b, 11c (and 11d). When the reusable medium 10 is overlapped and bound, the projection of the binding tool is passed through the two holes 11a and 11c, 11b and 11c (or 11b and 11d) arranged along the side of the reusable medium 10. To use. That is, it can be bound in either the long side direction or the short side direction of the rectangular reusable medium 10.

  FIG. 4 shows another example of the reusable medium of the present invention. Here, holes 11 and 12 are provided near both corners of one side of the rectangular reusable medium 10.

  When the composition for reducing the adhesiveness with the image forming substance is used repeatedly by forming an image on one side of the reusable media 10 provided on both sides of the substrate, the composition is repeatedly used so that the number of times of use on both sides becomes substantially equal. It is preferable. Thereby, the deterioration state of both surfaces becomes substantially equal, and the number of repeated use can be increased. As shown in FIG. 4, by providing the holes 11 and 12 in the reusable medium 10, the front and back surfaces of the reusable medium 10 can be used without distinction, so that the number of repeated uses of the reusable medium 10 can be increased. Note that even if a hole is provided near the center of the side of the reusable medium 10, it can be used without distinction between the front and back surfaces, so that the number of repeated uses of the reusable medium 10 can be increased.

  When the base material is a plastic film or the like or is colored, the reusable medium can be easily distinguished from a general recording material. However, reusable media with whiteness similar to that of general recording materials that use paper as a base material and are used to improve the reproducibility of color images, in particular, are difficult to distinguish from general recording materials. is there. For this reason, it is indispensable to make it distinguishable from general recording materials in order to obtain a practical system. When general recording materials and reusable media coexist, it is necessary to classify general recording materials on which images remain and reusable media after image removal processing. In particular, in an image removing apparatus that transfers an image forming substance to a peeling member and removes the image forming substance on the reusable medium, when the general recording material is conveyed, the recording material and the peeling member are imaged. Since it becomes difficult to adhere and separate via the forming substance, jamming of the recording material occurs, and normal image removal processing becomes difficult.

  Therefore, it is preferable to use a hole provided in the reusable medium as identification information of the reusable medium. Thereby, since it is not necessary to form a cutting part other than the hole, it is possible to reduce the cost required for processing and to suppress the loss of images.

  In addition, since reusable media generally has a configuration in which adhesiveness with an image forming substance is lowered, even if identification information is provided on the reusable medium by printing or the like, the identification information is likely to be dropped due to repeated use. In order to suppress the loss of the identification information due to repeated use, a method of forming the identification information by printing or the like before forming the composition that reduces the adhesion with the image forming substance can be used. However, the base material before forming the composition that lowers the adhesion with the image forming substance is generally a long paper or film wound around a roll, and the identification information is used when cutting for actual use. Therefore, there is a problem that the manufacturing process of the reusable medium becomes complicated.

  By using holes as the reusable medium identification information, it is not necessary to provide the reusable medium identification information by printing or the like, and the problem that the identification information is lost due to repeated use of the reusable medium can be solved.

  Although the entire reusable medium can be colored with dyes or pigments to obtain identification information, the color reproduction range when forming a color image on the reusable medium is narrowed.

  If the user opens a hole, there is a problem that the hole causes a trouble in the image removing apparatus or the image forming apparatus, and the value of the reusable medium is lowered. For this reason, it is preferable to make a hole in the manufacturing stage of reusable media.

  FIG. 5 shows another example of the reusable medium of the present invention. Here, holes 11 and 12 are provided in the vicinity of both corners of one side of the rectangular reusable medium 10, and a notch 13 is provided. The notch 13 is provided so that the user, the image forming apparatus, and the image removing apparatus can be identified as the reusable medium 10. Although it is preferable to use the hole also as identification information for the reusable media, when identifying whether or not a general recording material is mixed in the stacked reusable media, the reusable media is accurately stacked only with the holes. In addition, it is necessary to confirm whether or not all the recording materials with holes overlapped from the surface direction of the reusable medium, and this operation may be difficult. By providing a cutout in the reusable medium, it is possible to easily identify that a general recording material other than the reusable medium is mixed by observing from the side surface of the stacked recording materials.

  FIG. 6 shows another example of the reusable medium of the present invention. Here, holes 11 and 12 and a notch 13 are provided in the vicinity of both corners of one side of the rectangular reusable medium 10. As a result, binding can be performed obliquely with respect to the side of the reusable medium 10, folds generated when the bound reusable medium 10 is browsed can be reduced, and the number of repeated uses of the reusable medium 10 can be increased. it can.

  If a hole is made in the vicinity of the corner of the reusable medium, an image to be formed in the corner of the reusable medium may be lost when an equal-size image is formed. In order to suppress this, it is possible to use a method of controlling the image forming range using a region in which holes are previously perforated as a non-image forming region. Thereby, omission of an image can be suppressed. However, since the same size image may be required, it is preferable to cut the reusable media largely with respect to the size of the recording material specified by the standard such as JIS.

  When a cutout is provided to identify the reusable media, it is possible to suppress image loss by cutting a relatively small portion around the reusable media. However, when opening a hole, since a relatively large portion constituting the periphery of the hole is required, the cut portion reaches a relatively inside of the reusable medium. For this reason, it is preferable to cut a reusable medium largely. Although both the length direction and the width direction of the rectangular reusable media can be cut larger than the standard size, since it is less wasteful to cut either the length direction or the width direction greatly, preferable.

  FIG. 7 shows another example of the reusable medium of the present invention. Here, holes 11 and 12 are provided in the vicinity of both corners of one side of the rectangular reusable medium 10, and the size of the reusable medium 10 in the length direction is made larger than the standard length L.

  In order to suppress the relative movement of the bound reusable medium, it is preferable that the end surface of the reusable medium is brought into contact with the binding tool. In the method in which the end face of the reusable medium is brought into contact with the binding tool, and the bound reusable medium is pressed and the reusable medium is held by the frictional force generated between the reusable media, the composition reduces the adhesive force with the image forming substance. The reusable media provided with an object is relatively easy to move because the friction coefficient is low. For this reason, the movement restriction of the reusable medium by passing the protruding portion of the binding tool through the hole provided in the reusable medium, the movement restriction by the end surface of the reusable medium coming into contact with the binding tool, and the bound reusable medium It is preferable to bind and use the reusable media so that all the movement restrictions due to the frictional force generated between the reusable media are exerted by the pressure contact. Thereby, it can suppress that the bound reusable media move relatively. As a result, it is possible to suppress the image forming substance from dropping from the reusable medium, and to suppress the loss of information during use. Furthermore, the image forming material that has fallen adheres to the back surface of the reusable medium, and the image forming material that adheres to the back surface is prevented from being transferred to and adhered to the path for transporting the reusable media of the image removal device to contaminate the transport path. Can do.

  All of the restrictions on the movement of the reusable media by the protrusion, the restrictions on the movement of the end surface of the reusable media in contact with the binding tool, and the restrictions on the movement of the reusable media by the friction force generated by pressing the bound reusable media. In order to do this, when the protrusion of the binding tool is inserted into the hole of the reusable media, the distance from the end surface of the reusable media that the hole is opened in the reusable media so that the end surface of the reusable media contacts the binding tool. And the size of the holes must be set.

  In the present invention, as a binding tool for binding a plurality of reusable media, a binding tool having a protrusion that penetrates a cut portion provided in the reusable media and a pressure contact portion that presses the plurality of reusable media can be used. .

  FIG. 8 shows an example of a binding tool used in the present invention. 8A, 8B, and 8C are a front view, a side view, and an elevation view, respectively. The binding tool includes a plate-like member 20 having elasticity, and the plate-like member 20 includes a spring function portion 21a and 21b that functions as a spring and a back surface portion 23 that holds a distance between the pressure contact members 26a and 26b. Thus, the metal plate can be integrally formed by bending and deforming. The pressure contact members 26a and 26b pass through holes 29a and 29b provided in the plate-like member 20, and the distal end portions 27a and 27b are pressed against each other by the spring function portions 21a and 21b, and are held integrally with the plate-like member 20. ing. In the vicinity of the tip 27b of the pressure contact member 26b, cylindrical protrusions 25a and 25b are provided by caulking, welding, or the like. Even when the tip portions 27a and 27b are closed, the relief portions 28a and 28b are provided in the vicinity of the tip portion 27a so that the protrusions 25a and 25b do not hit the tip portion 27a and press the sandwiched reusable media. Is provided.

  When binding and using a plurality of reusable media, for example, a reusable media provided with holes as shown in FIG. 4B is used, and holes 11 (for example, 11b and 11c) of the plurality of reusable media are used. The projections 25a and 25b are used through. When binding the reusable medium, the pressure contact members 26a and 26b are pushed with a finger to open the leading end portions 27a and 27b and allow the protrusions 25a and 25b to penetrate the hole 11 of the reusable medium.

  When a reusable medium is bound using such a binding tool, relative movement between the usable media is restricted by a hole provided in the reusable medium and a projection of the binding tool that passes through the hole. Since it is press-contacted by the front-end | tip parts 27a and 27b of the members 26a and 26b, the movement is further controlled. For this reason, omission of the image forming substance due to rubbing of the reusable media can be suppressed.

  When a reusable medium is bound by pressure contact using a binding tool that does not have a protrusion, it is necessary to increase the spring strength of the pressure contact members 26a and 26b so that a large pressure is applied to the reusable medium. At this time, when a large pressure is applied to the reusable medium, the image forming material in the portion to which the pressure is applied drops, and the composition that reduces the adhesion with the applied image forming material also drops, making repeated use difficult. become.

  In addition, for example, when a reusable medium is bound using a binding tool that does not have a pressure contact member such as a ring-shaped metal member and a binding string, when a force that relatively moves the reusable medium is applied, A force is applied to the hole, and the hole is deformed or torn. In particular, when the reusable media base material uses paper whose main material is cellulose fiber, deformation and tearing are likely to occur. In addition, when the reusable medium is bound with a large number of holes and a large number of protrusions, the force for shifting the reusable medium is dispersed, and deformation and tearing can be suppressed. However, in reusable media, it is assumed that it is used repeatedly, and it is not always used by binding, and may be used without binding, so it may be used without binding. It is not preferable to provide a large number of holes. Moreover, even if a hole is deformed or torn in general paper, it is used only once and hardly causes trouble. However, in the reusable media, the image forming substance is removed and reused after being bound and used. Therefore, unless the hole is deformed or torn, the part deformed by the image forming apparatus or the image removing apparatus Will cause a skew and jam.

FIG. 14 shows a reusable medium bound to a binding tool. Here, the relationship between the holes 11b and 11c provided in the reusable medium and the projections 25a and 25b of the binding tool will be described. Assuming that the diameter of the protrusion is d, the hole diameter of the reusable media is D, and the distance between the centers of the holes of the reusable media is L, it is assumed that there is no deformation or breakage of the reusable media. The angle difference θ is expressed by equation (1)
θ = 2 × arctan (D−d) / L
Is required. It is preferable to set the hole of the reusable medium and the protrusion of the binding tool so that the maximum angle difference θ is 3 ° or less. Thereby, the effect of suppressing the omission of the image forming substance is increased.

  FIG. 8 shows an example in which a binding tool having two protrusions is used. However, a reusable medium having a hole as shown in FIG. 5A is used, and a binding tool having one protrusion is used. Even in this case, the penetration of the protruding portion into the hole and the pressure contact of the reusable medium can be used in combination, so that the image forming substance can be prevented from falling off due to the relative movement between the reusable media. This is considered to be because if there are no holes, it is difficult to restrict the relative rotational movement between the reusable media, but even if there is only one hole, the translational movement between the reusable media is restricted.

  FIG. 10 shows another example of the binding tool used in the present invention. 10A and 10B are a front view and a side view, respectively. The binding tool includes a plate-shaped member 30 and two rod-shaped members 36 and 37. The plate-like member 30 has a function of pressing the reusable medium with the back surface portion 31 as a spring. The plate-like member 30 is provided with winding portions 33 and 34 for inserting bent rod-like members 36 and 37 that function as pressure release handles, respectively. The winding portion 33 has a cut, and the rod-shaped member 36 is inserted into the winding portions 33a and 33c and is rotatable. Similarly, the winding portion 34 has a break, and the rod-shaped member 37 is inserted into the winding portions 34a and 34c, so that the rod-shaped member 37 is rotatable. In addition, in FIG. 10B of the plate-like member 30, projections 35 a and 35 b that are bent in the direction opposite to the winding part 34 are formed. In FIG. 10 (b), the lower length of the plate-like member 30 is configured to be longer than the upper length. Therefore, even when the reusable media to be bound is small, the protrusions 35a and 35b are formed on the upper member. Without touching, the inserted reusable media can be pressed.

  When binding and using a plurality of reusable media, for example, a reusable media provided with holes as shown in FIG. 6A is used, and the holes 11 (for example, 11a and 11b) of the plurality of reusable media are used. The projections 35a and 35b are used through. When binding the reusable media, the rod-shaped members 36 and 37 are pushed open with fingers, and the protrusions 35a and 35b are passed through the holes 11 of the reusable media.

  When such a binding tool is used, as in the binding tool of FIG. 8, the relative movement between the usable media is restricted by the holes provided in the reusable media and the projections of the binding tools passing through the holes, and the reusable media. Is pressed by the winding portions 33 and 34 provided at the front end of the plate-like member 30, and the movement thereof is further restricted, so that the image forming substance can be prevented from falling off due to rubbing of the reusable medium.

  In this case, the maximum angle difference θ between the stacked reusable media is also obtained from the equation (1), and the maximum angle difference θ is preferably 3 ° or less. Thereby, the effect of suppressing the omission of the image forming substance is increased.

  FIG. 12 shows another example of the binding tool used in the present invention. 12A, 12B, and 12C are a front view, a side view, and an elevation view, respectively. The binding tool includes a plate-like member 40 and a pressing jig 41 manufactured by plastic molding. The bent tip portions 40a and 40b of the plate-like member 40 have a function of pressing the reusable medium as a spring. In FIG. 12B of the plate-like member 40, on the lower side, there are protrusions 45a and 45b that are configured so that the bending angle and length are changed and protrude upward. In FIG. 12B of the plate-like member 40, escape holes 46a and 46b are provided on the upper side so that the protrusions 45a and 45b do not hit. In FIG. 12B of the plate-like member 40, there are grooves 42 a and 42 b for engaging with the pressing jig 41 on the upper side and the lower side. In addition, in FIG. 12B of the pressing jig 41, there are cut portions 44a and 44b for insertion into the grooves 42a and 42b on the upper side and the lower side, respectively. The notches 44a and 44b of the pressing jig 41 are inserted into the grooves 42a and 42b, and can move along the grooves.

  When binding and using a plurality of reusable media, for example, a reusable media provided with holes as shown in FIG. 6A is used, and the holes 11 (for example, 11a and 11b) of the plurality of reusable media are used. The protrusions 45a and 45b are used through. After the protrusions 45a and 45b are passed through the holes 11 of the reusable media, the inserted reusable media is pressed by the tip portions 40a and 40b by moving the pressing jig 41 along the grooves 42a and 42b. .

  When such a binding tool is used, as in the binding tool of FIG. 10, the relative movement between the usable media is restricted by the holes provided in the reusable media and the projections of the binding tools passing through the holes, and the reusable media. Is pressed by the tip portions 40a and 40b, and the movement thereof is further restricted. For this reason, omission of the image forming substance due to rubbing of the reusable media can be suppressed.

  In this case, the maximum angle difference θ between the stacked reusable media is also obtained from the equation (1), and the maximum angle difference θ is preferably 3 ° or less. Thereby, the effect of suppressing the omission of the image forming substance is increased.

  By configuring the binding tool so that the end surface of the reusable media hits the binding tool when the projection portion of the binding tool penetrates the hole provided in the reusable media, the movement restriction of the reusable media by the projection and the end face of the reusable media are All of the movement restriction by contact with the binding tool and the movement restriction by the frictional force generated between the reusable media by pressing the bound reusable media can be applied. When such a binding tool is used, it is possible to suppress relative movement of the bound reusable media. For this reason, it is possible to prevent the image forming material from dropping from the reusable medium. Further, it is possible to prevent the dropped image forming material from adhering to the back surface of the reusable media, and the image forming material from adhering to the back surface from being transferred and adhered to the reusable media transport path of the image removing apparatus to contaminate the transport path. .

  In the binding tool of FIG. 8, since the end surface of the reusable medium abuts on the back surface portion 23, the distance from the hole opened in the reusable medium to the end surface of the reusable media is equal to the distance from the protrusion 25 to the back surface portion 23. As described above, by configuring the position and size of the hole to be opened in the reusable medium, and the binding tool, the movement restriction of the reusable medium by the protrusion and the movement restriction by the end surface of the reusable medium coming into contact with the binding tool were bound. By pressing the reusable media, all the movement restrictions due to the frictional force generated between the reusable media can be applied.

  At this time, when the distance between the projection 25 of the binding tool and the back surface 23 is large, it is necessary to increase the distance from the end surface of the reusable medium to the hole in order for the above three restrictions to act. . That is, it is necessary to increase the distance between the side of the reusable medium and the hole, and the image forming area of the reusable medium is narrowed. For this reason, it is preferable to provide the contact part 24 which contact | abuts the end surface of reusable media by bending a part of press-contact member 26b of the binding tool of FIG. 8 (refer FIG. 9). As a result, even if a hole is formed at a position where the distance from the end surface of the reusable medium is short, the end surface of the reusable medium is brought into contact with the contact portion 24 when the projection of the binding tool is bound through the hole formed in the reusable medium. Since it abuts, the movement restricting action of the reusable medium can be improved. In addition, by providing the contact portion 24 so as to be parallel to the projection portion 25, when binding the reusable media having a hole so that the distance from the end surface of the reusable media is constant, a deviation occurs. It can suppress that force is applied to the hole of a reusable medium.

  In the binding tool of FIG. 10, since the end surface of the reusable medium abuts on the back surface portion 31 of the plate-shaped member 30, the distance from the hole provided in the reusable media to the end surface of the reusable media, and the protrusion 35 to the back surface portion 31. By configuring the position and size of the hole provided in the reusable media, and the binding tool so that the distance to each other is equal, the movement of the reusable media by the protrusions and the end face of the reusable media abut on the binding tool By restricting the movement and binding of the reusable media that have been bound, it is possible to cause all of the movement restriction due to the frictional force generated between the reusable media to act.

  At this time, similarly to the binding tool of FIG. 8, the binding tool of FIG. 10 is preferably provided with a contact portion 39 with which the end surface of the reusable media contacts by bending a part of the plate-like member 30 (FIG. 10). 11). Thereby, even if a hole is formed at a position where the distance from the end face of the reusable medium is short, the above three movement restricting actions can be improved, and the image forming substance can be prevented from falling off. Further, by providing the abutting portion 39 so as to be parallel to the protruding portion 35, the reusable medium can be bound with high accuracy in the same manner as the binding tool of FIG.

  The binding tool of FIG. 12 is the same, and the end surface of the reusable medium is in contact with the back surface portion 43 of the plate-like member 40. Therefore, the distance from the hole provided in the reusable medium to the end surface of the reusable medium, and the protrusion 45 By configuring the position and size of the hole provided in the reusable medium and the binding tool so that the distance to the back surface portion 43 is equal, the above three movement restricting actions can be improved. Further, it is preferable to provide a contact portion 47 with which the end face of the reusable medium contacts by bending a part of the plate-like member 40 (see FIG. 13). Thereby, even if a hole is opened at a position where the distance from the end face of the reusable medium is short, the above three movement restricting actions can be improved. In addition, the reusable media can be bound with high accuracy by providing the contact portion 47 so as to be parallel to the protrusion 45.

  As shown in FIG. 2, when binding the reusable media in which a plurality of holes are not parallel to the side but are arranged diagonally, the corners of the reusable media are back when the binding tool of FIG. 8, FIG. 10 or FIG. 12 is used. It abuts on the parts 23, 31 and 43. When the corners of the reusable media come into contact with the binding tool, the reusable media are easily damaged, and when the image is formed on the reusable media reproduced by removing the image forming material formed on the reusable media, Skew easily occurs. At this time, by using a structure having a hole in a part of the back surface portions 23, 31 and 43 of the binding tool, the corner portion of the reusable medium does not come into contact, but the side portion of the reusable medium comes into contact, Damage to the reusable media can be suppressed. Thereby, it is possible to suppress the occurrence of jam and skew in the image removing apparatus and the image forming apparatus. Further, when the reusable medium of FIG. 2 is bound using the binding tool of FIG. 9, FIG. 11 or FIG. 13 having the contact portions 24, 39 and 47 with which the end face of the reusable medium abuts, the corner portion of the reusable medium is used. It is preferable to provide two contact portions in the width direction of the binding tool so as not to contact each other. Accordingly, the side portion of the reusable media can be brought into contact with the contact portion, and the same effect as the structure having holes in the back portions 23, 31 and 43 of the binding tool can be obtained and the reusable The distance between the hole provided in the medium and the corner of the reusable medium can be shortened.

  The image forming apparatus of the present invention will be described.

  FIG. 15 shows an example of the image forming apparatus of the present invention. In this image forming apparatus, an image is formed by electrophotography using powder toner, and the image is removed by transferring the image forming material formed on the reusable medium to a peeling member. That is, the image forming / removing system in which the image forming apparatus and the image removing apparatus are housed in one casing.

  In this image forming apparatus, yellow (Y), magenta (M), magenta (C), and black (K) toner images are formed on the photoreceptors 201Y, 201M, 201C, and 201K, respectively. Transferred to the intermediate transfer member 217. Further, the toner image transferred to the intermediate transfer member 217 is transferred to the recording material 237 conveyed from the paper feed cassette 231. The toner image formed on the recording material 237 is heated by the fixing roller 244 and fixed on the recording material 237. Such a color electrophotographic image forming apparatus is known as a tandem color electrophotographic apparatus.

  Each of the yellow (Y), magenta (M), magenta (C), and black (K) image forming stations includes the following elements of a known electrophotographic apparatus. That is, it is composed of a drum- or belt-shaped photosensitive member 201 (201Y, 201M, 201C, 201K) having a photoconductor layer or a protective layer on the surface, a metal or the like as a base, a charging roller, a wire charger, or the like. The charging unit 202 (202Y, 202M, 202C, 202K) for charging the photosensitive member 201, the charged photosensitive member 201 is exposed in accordance with the image to be formed, placed on the laser, LED, light emitter-liquid crystal light valve, and the document table. Light irradiation means (not shown) such as an optical system of a conventional analog copying machine that illuminates an original and projects reflected light onto a photosensitive member. Developing means 203 (203Y, 203M, 203C, 203K) having a magnetic roller and a toner conveying roller for forming an image, formed on the photosensitive member 201. A corona wire charger 205 (205Y, 205M, 205C, 205K) for controlling the charging of the toner image, a roller or a corona wire type for transferring the toner image formed on the photosensitive member 201 to the intermediate transfer member 217 An electric field applying unit 206 (206Y, 206M, 206C, 206K) and a cleaning unit 207 (207Y, 207M, 207C, 207K) for removing powder toner remaining on the photoconductor after transfer are included. In addition to these components, known elements can be added as necessary. For example, in order to remove the charge on the photosensitive member 201 after the image is transferred, a charge eliminating means such as an AC charger or a light irradiator can be provided. In addition, a means for detecting the charging voltage to the photoconductor and a means for controlling the voltage applied to the charger are provided, so that the surface potential charged on the photoconductor is kept constant even when there is environmental change or deterioration due to repeated use. Control means can be provided. Further, when it is not necessary to remove the toner on the photoconductor 201 after the toner image is transferred, the cleaning unit 207 (207Y, 207M, 207C, 207K) can be removed. Further, when it is not necessary to charge the toner image formed on the photoconductor 201, the corona wire charger 205 (205Y, 205M, 205C, 205K) can be removed.

  The intermediate transfer member 217 is provided so as to inscribe the rollers 211, 212, 213, and 214, and an appropriate tension is applied by a tension applying mechanism (not shown). The intermediate transfer member 217 is provided with a cleaning unit 210 such as a brush or a roller that removes toner adhering to the surface. Further, if necessary, after transferring the image to the recording material 237, it is possible to provide a charge eliminating means for removing charges remaining on the intermediate transfer body 217 and a charging means for uniformly charging the intermediate transfer body 217.

  The recording material 237 is housed in a paper feed cassette 231 (231a, 231b) and is sent to a paper transport system by a paper feed roller 232 (232a, 232b), and a pair of paper feed rollers 233 (233a, 233b, 233c, 233d, 233e, 233f), and the toner image formed on the intermediate transfer member 217 is transferred to the recording material 237 by an electric field applying unit 242 such as a voltage applying roller or a corona wire charger.

  The image forming material transferred onto the recording material 237 is fixed by a fixing unit including a fixing roller 244, a pressure roller 245, and the like. The recording material 237 on which the image is fixed is discharged onto the paper discharge tray 240 through the paper discharge roller pair 241.

  The image forming apparatus includes two sheet feeding cassettes 231a and 231b. The sheet feeding cassette 231a stores a general recording material in which an image forming substance cannot be removed, and the sheet feeding cassette 231b includes A reusable medium capable of removing an image forming substance is stored.

  The image forming apparatus includes a first image forming mode that presupposes erasing an image formed on the recording material 237 and a second that does not presuppose erasing an image formed on the recording material 237. There is provided means for controlling the user to select the image forming mode. When the user selects the first image forming mode, the control unit supplies the reusable medium stored in the paper feed cassette 231b and forms an image on the reusable medium.

  FIG. 16 shows a paper feed cassette used in the image forming apparatus of FIG. Here, when viewed in the sheet feeding direction of the sheet feeding cassette 231b, a portion corresponding to the rear end is enlarged. A light emitting element 238 and a light receiving element 239 are provided in the vicinity of the rear end and side end face of the paper feed cassette 231b, and detect the presence or absence of notches or holes in the recording material 237 set in the paper feed cassette 231b. The signal received by the light receiving element is sent to a means (not shown) for determining whether the set recording material is a reusable medium. If a recording material that is not a reusable medium is set, Control is performed to prohibit image formation in one image forming mode or to notify the user that image formation in the first image forming mode is impossible.

  When forming an image on the reusable medium in the first image forming mode, if the reusable medium shown in FIG. 7 that has been cut in advance is used, the image is not lost, but the reusable medium has a cut-out portion. In particular, when a hole is provided, if printing is performed at the same magnification as that of a normal recording material, an image may be applied to the cut portion and may be lost. In the first image forming mode, a reusable medium having a cut-out portion is used. Therefore, by controlling the image forming range by using the area of the reusable medium in which holes are provided in advance as a non-image forming area, image loss can be prevented. Can be suppressed. However, if the non-image forming area is large, the formed image may be small and it may be difficult to identify the image. It is preferable to form the image in as wide an area as possible on the reusable medium. Whether or not an image is applied to the cut portion of the reusable medium depends on the image to be formed. When the cut portion is provided at the corner, many images are not applied to the cut portion. Therefore, when the first image forming mode is selected and it is determined that the image is applied to the cut portion, a means for controlling the image magnification to be reduced so that the image does not cover the cut portion is formed. It is preferable to use it.

  The image forming apparatus shown in FIG. 15 can be used even when a reusable medium that can form and remove an image on both sides is formed on both sides. . In the case of forming an image on one side, it is preferable that the image forming apparatus performs control so that image formation on both sides is prohibited when the first image forming mode is selected.

  In addition, it is preferable that the image forming apparatus capable of connecting the stapler and the perforated peripheral device has a means for controlling the peripheral device to be prohibited from being used when the first image forming mode is selected. Thereby, it can suppress that the lifetime of reusable media becomes short.

  The image forming apparatus in FIG. 15 includes an image removing apparatus 250. The image removing apparatus 250 includes a paper feed cassette 251 that feeds a recording material 237 for removing an image, a paper feeding roller 252 that feeds the recording material 237 to an image removal processing unit, and a halogen lamp 254 as a heating source. From metal such as nickel and stainless steel stretched between aluminum block 253, aluminum block 253, tension roller 255, cleaning backup roller 265, or resin such as polyethylene terephthalate, polyimide, aramid resin, polyethylene naphthalate, polyetheretherketone In order to pressurize the image peeling member 257, the conveyed recording material 237 and the image peeling member 257 in a heated state, the surface of a substrate such as stainless steel, aluminum, iron or the like is elastic such as silicon rubber, fluorine rubber, polyurethane rubber, or the like. Pressurizing with members A roller 256, a spiral cleaning blade 258 for removing the image forming material transferred from the recording material 237 from the image peeling member 257, a container 259 for storing the image forming material removed from the image peeling member 257, and an image Presence / absence of a mark for identifying that an image is formed in the first image forming mode of the image forming apparatus, a pair of conveying rollers 281 and 282 for conveying the removed recording material 237 to the paper feeding cassette of the image forming apparatus Detection means 264, a storage container 261 that stores a recording material 237 from which an image cannot be removed, a guide plate 262 that guides the recording material 237 to the storage container 261, a movable guide plate 267, and a discharge roller pair 263.

  The recording material 237 from which the image is removed is set in the paper feed cassette 251. As information for identifying that the image can be removed, the recording material provided with notches at two corners of the sheet. 237 is loaded so that the notches are aligned and the notches are at the rear end. Similarly to the paper feed cassette 231b of the image forming apparatus, the paper feed cassette 251 of the image removing apparatus is also provided with a light emitting element and a light receiving element for detecting notches in the stacked recording materials 237. If it is not confirmed that the light emitting element and the light receiving element are notched all of the recording material 237 loaded in the paper feed cassette 251, “Paper that cannot remove toner is loaded” on the operation panel. Is provided in the image removing apparatus.

  Next, the loaded recording material 237 is sent out toward the image removing unit by the paper feed roller 252. The detection unit 264 is a video sensor that can read an image pattern composed of a line sensor, a CCD, and the like. The detection unit 264 reads an identification mark at the center of the front end of the fed recording material 237 and stores it in the memory unit of the control unit. It is compared with the identified identification pattern to determine whether or not to permit image removal processing.

  The recording material 237 determined to have an identification mark indicating that an image has been formed in the first image forming mode is guided by the movable guide plate 267, and is interposed between the image peeling member 257 and the pressure roller 256. It is conveyed to. The image peeling member 257 is heated by a halogen lamp 254 in the aluminum block 253. The surface temperature of the aluminum block 253 is detected by temperature detection means (not shown) such as a thermistor, thermocouple, platinum resistance, and thermal radiation measuring instrument, and the detected temperature is input to the temperature control means (not shown). The operation of the means (not shown) for changing the supply of electric power to the halogen lamp 254 is controlled by comparison with the set temperature, and the surface temperature is kept constant. The temperature setting range is usually 50 to 200 ° C., but it is preferably set to 80 to 120 ° C. in order to remove an image formed with a commonly used electrophotographic toner.

  The image forming substance on the recording material 237 is heated by contact with the heated image peeling member 257, and is applied by a spring, water pressure, air pressure, or the like applied between the image peeling member 257 and the pressure roller 256. The recording material 237 having the image forming substance on the surface and the image peeling member 257 are pressed in a state where the image forming substance is in contact with the image peeling member 257. The image forming substance on the recording material 237 is bonded to the image peeling member 257 by being heated and pressurized.

  The edge portion on the downstream side of the pressure roller 256 of the aluminum block 253 has a radius of curvature of 1 to 5 mm, and the image peeling member 257 is conveyed along this curvature. Therefore, due to the rigidity of the recording material 237, The recording material 237 and the image peeling member 257 are separated.

  Since the adhesive force of the reusable medium with respect to the image forming substance is configured to be weaker than the adhesive force of the image forming substance with respect to the image peeling member 257, the image forming substance on the recording material 237 is placed on the image peeling member 257. Is transferred to and removed.

  The image forming material on the image peeling member 257 transferred from the recording material 237 is scraped off by a rotating spiral cleaning blade 258 and stored in a container 259 that stores the image forming material. The recording material 237 from which the image has been removed is discharged to a paper feed cassette 231b of the image forming apparatus by a pair of conveying rollers 281 and 282. When the recording material 237 subjected to the image removal process is discharged from the image removing apparatus, the paper supply roller 232b is lifted by a lifting / lowering means (not shown), and the recording material 237 is stored in the paper supply cassette 231b. Stop at a position that will not interfere with the operation. Further, when the discharged recording material 237 is no longer conveyed by the conveying roller pair 282, the sheet feeding roller 232b is lowered and rotated in a direction opposite to the sheet feeding direction during image formation, and is discharged from the image removing device. The recorded material 237 is stored in the paper feed cassette 231b.

  If it is determined from the signal input to the detection means 264 that there is no identification mark indicating that an image has been formed in the first image formation mode, the movable guide plate 267 is turned by a rotation means (not shown). Thus, the recording material 237 is guided in the direction of the guide plate 262 for guiding the recording material 237 to the storage container 261. The recording material 237 determined to have no identification mark reaches the discharge roller pair 263 according to the movable guide plate 267 and is discharged to the storage container 261 by the discharge roller pair 263.

Example 1
A mixture of a linear α-olefin having 16 to 18 carbon atoms and maleic anhydride was charged to the autoclave at 1: 1 (molar ratio), the inside of the autoclave was purged with nitrogen, and reacted at 200 ° C. for 5 hours. The reaction product was saponified with an aqueous ammonium hydroxide solution to obtain an aqueous resin solution having a solid content of 20% by weight. The mixture of linear α-olefins is a mixture of linear α-olefins having 16, 17 and 18 carbon atoms in a 5: 3: 2 (molar ratio).

  A coating solution comprising 30 parts by weight of an aqueous resin solution and 15 parts by weight of a 15% by weight oxidized starch aqueous solution was prepared.

Using a wire bar, apply the coating solution on both sides of commercially available high-quality paper so that the dry coating amount on one side is 3.2 g / m ^2, and dry at 120 ° C. for 5 minutes. Smoothing treatment was performed.

  Cut the high-quality paper that has been smoothed into A4 size, and in the arrangement of FIG. 4B, provide holes with a diameter of 3 mm so that the distance L between the centers of the holes (see FIG. 14) is 15 mm. Reusable media.

A reusable medium is housed in the paper feed cassette 231b of the image forming apparatus in FIG. 15, and a developer for developer IPSiO CX8200 (manufactured by Ricoh Co., Ltd.) mainly composed of a polyester resin is filled in the developing means 203, and the process linear velocity is set. Was set to 130 mm / second, the temperature of the fixing roller 244 was set to 170 ° C., the surface pressure of the pressure roller 245 was set to 15 N / cm ² , and color images were formed on 20 reusable media. Similarly, a clear and abnormal image was obtained.

  Using the binding tool 61 of FIG. 9, 20 reusable media 10 on which images were formed were bound as shown in FIG. At this time, the binding tool 61 used had a diameter of the projection 25 of 2.9 mm, a distance between the projections 25a and 25b of 15 mm, and a width of the tip 27 of 25 mm. From the arrangement of the projections of the binding tool and the arrangement of the holes of the reusable medium, the maximum rotatable angle (the maximum angle difference θ calculated by the equation (1)) is 0.76 °. For the binding tool 61, a plate having a thickness of 0.25 mm was used as the plate-like member 20, and the pressing force of the reusable medium by the tip portion 27 was 950 cN over the entire width of 25 mm.

  The left side center portions 62a and 62b (see FIG. 18) of the tenth reusable medium 10 on the lower side of the 20 bound sheets are pressed and fixed by hand (distance between 62a and 62b: about 90 mm), and the tension gauge 51 A, B, C, D, E, F from the center of the reusable medium 10 using an evaluation tool (see FIG. 17) in which a disc-shaped rubber plate 52 having a diameter of 30 mm, a thickness of 8 mm, and a hardness of 20 ° is attached. The rubber plate 52 is moved 30 mm so as to be parallel to the reusable medium 10 while applying 400 cN pressure twice in each direction (see FIG. 18), and the reusable medium 10 is displaced or overlapped. The presence or absence of image loss due to rubbing between the media 10 was observed. In many cases, when the rubber plate 52 is pressed and moved, slippage occurs between the reusable medium 10 on which the image is formed and the rubber plate 52, and there is no displacement between the reusable media 10 and no dropout of the image. In some cases, the reusable media 10 may be displaced. However, when the pressure of the rubber plate 52 is released after pressing, the overlap of the reusable media 10 is restored to the original state due to the elastic force of the reusable media 10. However, when rubbed in any direction of A, B, C, D, E, and F, there was no shift between the reusable media 10 as can be seen visually, and no image dropout occurred.

Next, the binding tool 61 is removed, the process linear velocity is set to 25 mm / second, the temperature of the aluminum block 253 is set to 115 ° C., and the surface pressure of the pressure roller 256 is set to 20 N using the image forming apparatus of FIG. / Cm ^2, and a process for removing the image forming substance using a 100 μm-thick polyimide film as the image peeling member 257 was performed. The reusable media and the image peeling member 257 were separated using an aluminum block 253 having a radius of curvature of the edge portion of 2 mm. The image forming substance could be removed from any of the 20 reusable media.

  An image was formed again on the reusable medium from which the image forming substance was removed, as in the first time. However, all of the 20 reusable media obtained clear and abnormal images as with plain paper.

This image formation, use of binding, evaluation by the rubber plate 52, and operation of removing the image forming substance were repeated five times for the binding operation under the condition that the same position of the reusable medium is bound. In the fifth image formation, In all of the 20 reusable media, a clear and abnormal image was obtained as in the case of plain paper, and the image forming material could be removed even in the fifth image forming material removal.
(Comparative Example 1)
Evaluation was made in the same manner as in Example 1 except that a reusable medium having no hole was used and a binding tool having a structure similar to that shown in FIG. went. In this binding tool, the width of the tip portion 27 was 25 mm, but the pressing force of the reusable media by the tip portion 27 was 1800 cN for the entire width of 25 mm. When this binding method is performed, even when the rubber plate 25 is moved in any direction of A, B, C, D, E, and F, a shift between reusable media occurs. In particular, when a rotational force centered on the binding tools E and F is applied, the maximum deviation is 16 to 25 mm, and some of the images between the reusable media where the deviation has occurred are dropped off, and the reusable layered It was observed that the image forming material dropped off was attached to the back side of the media. In particular, the degree of omission of the formed image was large at the portion pressed by the binding tool.

  As in Example 1, when the image forming material was removed from these reusable media, the image forming material adhered to the back side of the reusable media was transferred and adhered to the pressure roller 256 of the image removing device, and was soiled. It was observed.

As in Example 1, the image forming, binding use, evaluation by the rubber plate 52, and the operation of removing the image forming material were repeated five times. When the operation was repeated, the image forming material transferred to the pressure roller 256 was reusable media. It was observed that the reusable medium was soiled by transferring to the non-image forming surface, and in particular, the transfer of the image forming substance from the pressure roller to the reusable medium became remarkable after the fourth time.
(Comparative Example 2)
Evaluation was performed in the same manner as in Example 1 except that a reusable medium having no hole was used and a binding tool having a structure similar to that of FIG. 10 was used except that no protrusion was provided. It was. In this binding tool, the width of the tip portion 27 was 25 mm, but the pressing force of the reusable media by the tip portion 27 was 2400 cN over the entire width of 25 mm. When this binding method is performed, even when the rubber plate 52 is moved in any direction of A, B, C, D, E, and F, a shift between reusable media occurs. In particular, when a rotational force centered on the E and F binding tools was applied, the maximum deviation was 12 to 21 mm, and omission was observed in some of the images between the reusable media where the deviation occurred. In particular, the degree of omission of the formed image was large at the portion pressed by the binding tool.

  As in the first embodiment, when the image forming material is removed from these reusable media, the image forming material attached to the back side of the reusable media is removed from the pressure roller of the image removing device as in the first comparative example. It was observed that the film adhered to 256 and was soiled.

  As a result of forming the image again on the reusable media from which the image forming material has been removed, the image is sharp in the portion of the 20 reusable media that is pressed by the binding tool in the 5 reusable media. The degree was degraded. The five reusable media in which deterioration in sharpness is observed are the upper three and lower two reusable media that are overlapped at the time of binding. It was estimated that the sharpness decreased due to this deformation.

As in Example 1, the image formation, binding use, evaluation with the rubber plate 52, and the operation of removing the image forming substance were repeated five times, but when repeated, a part of the image formed on the pressing portion of the binding tool was obtained. It could not be removed and image forming material remained. The remainder of the image forming substance in the pressing portion became particularly noticeable in the process of removing the image forming substance after the fourth time.
(Examples 2 to 4)
Evaluation was performed in the same manner as in Example 1 except that the diameter of the protrusion of the binding tool was changed to 2.8 mm, 2.7 mm, and 2.6 mm, respectively. Table 1 shows the results.

表１で最大回転可能角度は、式（１）で計算される最大角度差θ、最大ずれ量は、綴じた２０枚のリユーザブルメディアを、実施例１と同様に、Ａ、Ｂ、Ｃ、Ｄ、Ｅ、Ｆの方向にゴム板５２を移動させた場合に生じた、リユーザブルメディア間の最大ずれ量、繰り返し５回目の画像特性において、○は、画像の鮮明度が普通紙と同等以上である場合であり、特に綴じ部の鮮明度に着目して評価したものである。繰り返し５回目の裏汚れは、画像形成物質の脱落により画像除去処理でリユーザブルメディアの画像形成面と反対側の面に汚れが発生するか否かを評価したものであり、加圧ローラ２５６に汚れが発生していない場合に○とした。
（参考例）
綴じ具の突起部の直径を２．５ｍｍに変更した以外は、実施例１と同様に評価を行った。繰り返し５回目の裏汚れについては、加圧ローラ２５６に汚れが生じていたが、リユーザブルメディアの画像形成面と反対側の面に転写するに到っていなかったので、△と判定した。

In Table 1, the maximum rotatable angle is the maximum angle difference θ calculated by the equation (1), and the maximum shift amount is 20 sheets of reusable media that are bound, as in Example 1, A, B, C, D In the maximum deviation amount between the reusable media and the fifth image characteristic repeatedly generated when the rubber plate 52 is moved in the directions of E, F, ○, the sharpness of the image is equal to or greater than that of plain paper It is a case, and it evaluated especially paying attention to the sharpness of a binding part. The fifth back stain is an evaluation of whether or not the surface of the reusable medium opposite to the image forming surface is contaminated by the image removal process due to the image forming material dropping off. When no occurred, it was rated as ○.
(Reference example)
Evaluation was performed in the same manner as in Example 1 except that the diameter of the protruding portion of the binding tool was changed to 2.5 mm. Regarding the fifth back stain repeatedly, the pressure roller 256 was stained, but was not transferred to the surface opposite to the image forming surface of the reusable media, so it was determined to be Δ.

It is a figure which shows an example of the reusable medium of this invention. It is a figure which shows the other example of the reusable medium of this invention. It is a figure which shows the other example of the reusable medium of this invention. It is a figure which shows the other example of the reusable medium of this invention. It is a figure which shows the other example of the reusable medium of this invention. It is a figure which shows the other example of the reusable medium of this invention. It is a figure which shows the other example of the reusable medium of this invention. It is a figure which shows an example of the binding tool used by this invention, (a), (b) and (c) are a front view, a side view, and an elevation view, respectively. It is a figure which shows the other example of the binding tool used by this invention. It is a figure which shows the other example of the binding tool used by this invention, and Fig.10 (a) and (b) are a front view and a side view, respectively. It is a figure which shows the other example of the binding tool used by this invention. It is a figure which shows the other example of the binding tool used by this invention, (a), (b) and (c) are a front view, a side view, and an elevation view, respectively. It is a figure which shows the other example of the binding tool used by this invention. It is sectional drawing which shows the reusable medium bound by the binding tool. It is a figure which shows an example of the image forming apparatus of this invention. FIG. 16 is a diagram illustrating a paper feed cassette used in the image forming apparatus of FIG. 15. It is a figure which shows the evaluation tool used in the Example. It is a figure which shows how to bind the reusable media of an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Reusable media 11, 11a, 11b, 11c, 11d Hole 12, 12a, 12b, 12c Hole 13, 13a, 13b Notch 20, 30, 40 Plate-like member 21a, 21b Spring function part 23, 31 Back surface part 24, 39 47 Contact part 25a, 25b, 35a, 35b, 45a, 45b Protrusion part 26a, 26b Pressure contact member 27a, 27b, 40a, 40b Tip part 28a, 28b, 46a, 46b Escape hole 29a, 29b Hole 33, 33a, 33b , 33c, 34, 34a, 34b, 34c Roll-in part 36, 37 Rod-shaped member 41 Pressure jig 42a, 42b Groove 201, 201Y, 201M, 201C, 201K Photosensitive member 202, 202Y, 202M, 202C, 202K Charging unit 203 , 203Y, 203M, 203C, 203K Means 205, 205Y, 205M, 205C, 205K Corona wire charger 206, 206Y, 206M, 206C, 206K Electric field applying means 207, 207Y, 207M, 207C, 207K Cleaning means 211, 212, 213, 214 Roller 217 Intermediate transfer member 231 231a, 231b Paper feed cassette 232, 232a, 232b Paper feed roller 233, 233a, 233b, 233c, 233d, 233e, 233f Paper feed roller pair 237 Recording material 238 Light emitting element 239 Light receiving element 240 Paper discharge tray 241 Paper discharge roller Pair 242 Electric field applying means 244 Fixing roller 245 Pressure roller 250 Image removing device 251 Paper feed cassette 252 Paper feed roller 253 Aluminum block 254 Halogen lamp 255 Tension roller 256 Pressure roller 257 image peeling member 258 spirally clean grayed blade 259 container 261 container 262 guide plate 263 discharge roller pair 264 detecting means 265 cleaning backup roller 267 movable guide plate 281, 282 conveying roller pair

Claims (10)

A step of forming an image on a reusable medium using an image forming material, a step of binding a reusable medium on which a plurality of the images are formed using a binding tool, and a step of removing the image forming material from the reusable medium on which the image is formed In a method of using reusable media having a process of:
The reusable medium has a cut portion,
The method of using a reusable medium, wherein the binding tool includes a protrusion that can penetrate the cut portion and a pressure contact portion that can press the reusable medium. In a state in which a plurality of reusable medium using the binding tool has been stapled, the movable range of the reusable medium is the use of reusable medium according to claim 1, wherein the relatively is 3 ° or less. The excision is a hole;
The method of using a reusable medium according to claim 1, wherein the binding tool has a member that contacts an end surface of the reusable medium in a state where a plurality of reusable media are bound by the binding tool. The excision part is a plurality of holes,
The method of using a reusable medium according to any one of claims 1 to 3, wherein the binding tool has a protrusion that can penetrate the plurality of holes. The reusable media is a rectangular sheet,
5. The method of using a reusable medium according to claim 4, wherein the plurality of holes are provided in a direction having a predetermined angle with respect to a side of the reusable medium near a corner of the reusable medium. The reusable medium has a composition on a substrate that reduces adhesion with the image forming substance,
The method for using reusable media according to any one of claims 1 to 5, wherein the substrate is paper containing cellulose fibers.   The method of using a reusable medium according to any one of claims 1 to 6, wherein the reusable medium has a composition that reduces adhesiveness to the image forming substance on both surfaces of a base material.   The method of using a reusable medium according to any one of claims 1 to 7, wherein in the step of forming the image, an image is formed on one side of the reusable medium. The image forming substance is a powder containing a thermoplastic resin and a color material,
The method of using a reusable medium according to any one of claims 1 to 8, wherein the powder is thermally fixed to the reusable medium in the step of forming the image.   The method for using a reusable medium according to any one of claims 1 to 9, wherein, in the step of removing the image forming substance, the image forming substance is transferred from the reusable medium to a peeling member.

Images