JP5571738B2 - Sheet processing device - Google Patents

Description

  Embodiments described herein relate generally to a sheet processing apparatus that performs post-processing of a sheet on which an image is formed by an image forming apparatus such as a copying machine, a printer, or an MFP (Multi-functional peripheral).

There is an erasing device that erases an image formed on a sheet and makes the sheet reusable. The erasing apparatus includes an erasing unit that erases an image formed on a sheet, and a stacking tray on which sheets that have been erased and can be reused are stacked. The sheets stacked on the stacking tray are taken out by the user and then set in a sheet feeding cassette of the image forming apparatus (Patent Document 1). The image forming apparatus forms an image with a color material that can erase the image on the sheet by the erasing device.
On the other hand, there is a sheet processing apparatus that binds a sheet on which an image is formed by the image forming apparatus. For example, a sheet processing apparatus includes a stapling process that binds a plurality of sheets with a metallic needle. Alternatively, there is a sheet processing apparatus that binds a sheet bundle using a pressure-sensitive adhesive (Patent Document 2).

JP 2010-113337 A JP 2007-90781 A

In the stapling process using a metallic needle, it is necessary to remove the metallic needle when the sheet is reused. Further, even if the metal needle can be removed from the sheet, a flaw such as a hole remains in the bound sheet. Such a sheet is not preferable as a sheet to be reused. For example, when a sheet having a flaw such as a hole is fed to the image forming apparatus for reuse at the time of recycling, there is a possibility that a conveyance failure of the sheet may occur.
Further, when the user handles the bundled sheets, the bundle may be opened with the binding member as a base point, and a crease or twist may be attached to the sheet. Therefore, when a sheet bundle bound with a metal or adhesive binding member is disassembled and set in the sheet feeding unit of the image forming apparatus, there is a possibility that the sheets may not be properly aligned, or when the sheet is fed into the apparatus. There is a risk that a conveyance failure will occur.

  The problem to be solved by the present invention is to provide a sheet processing apparatus that appropriately bundles sheets while improving sheet reusability.

To achieve the above object, a sheet processing apparatus of the present embodiment includes a transfer means for transferring to a final sheet to a predetermined position, the conveyance direction upstream side of each sheet that is transported to the predetermined position by said conveying means supplying an adhesive member to the end portion, and a pasting means for each sheet to flux that is part of the so Paste protrude from the conveying direction upstream side end portion of the sheet the conveying of the adhesive member, said seat is disposed upstream of the pasting means along the conveyance direction of, so as to cover the adhesive member is partially and our said end of sheets bundling created projecting from said end portion by said attachment means A binding member that supplies a binding member, and binds the binding member to the protruding adhesive member and the protruding adhesive member to bind the sheet bundle .

FIG. 2 is a block diagram illustrating a hardware configuration of the image forming apparatus and the sheet processing apparatus according to the first embodiment. Schematic for demonstrating the structure of the sheet processing apparatus of 1st Embodiment. Schematic for demonstrating the binding unit of the sheet processing apparatus of 1st Embodiment. Schematic for demonstrating the 1st binding part of 1st Embodiment. The flowchart for demonstrating the sticking process of 1st Embodiment. Schematic for demonstrating the modification of the 1st binding part of 1st Embodiment. Schematic for demonstrating the 2nd binding part of 1st Embodiment. Schematic for demonstrating the 2nd binding part of 1st Embodiment. Schematic for demonstrating the sheet | seat bundle of 2nd Embodiment. Schematic for demonstrating the binding unit of 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)

  FIG. 1 is a block diagram illustrating a hardware configuration of the image forming apparatus and the sheet processing apparatus. The image forming apparatus 100 includes a control unit 102, a storage device 108, a communication interface (communication I / F) 110, an operation panel 112, a scanner unit 114 that reads an original, and a printer unit (image forming unit) that forms an image. ) 116. Each component of the image forming apparatus 100 is connected via a bus 118.

  The control unit 102 includes a processor 104 including a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), and a memory 106. The memory 106 is a semiconductor memory, for example, and includes a ROM (Read Only Memory) that stores a control program and the like, and a RAM (Random Access Memory) that provides a temporary work area to the processor 104. The control unit 102 controls the operation panel 112, the scanner unit 114, and the printer unit 116 based on various programs stored in the ROM or the storage device 108. The control unit 102 has a function of correcting or expanding image data. The control unit 102 communicates with the control unit 202 of the sheet processing apparatus 200.

  The storage device 108 stores application programs and an OS. The application program includes a program that executes a function of the multifunction peripheral such as a copy function, a print function, a scanner function, a facsimile function, and a network file function. The application program further includes an application for a Web client (Web browser) and other applications.

  The storage device 108 temporarily stores image data of a document read by the scanner unit 114 or image data acquired via the communication I / F 110. In addition, the storage device 108 appropriately stores software updates, protected electronic documents, text data, account information, policy information, and the like. The storage device 108 may be, for example, a magnetic storage device such as a hard disk drive, an optical storage device, a semiconductor storage device (flash memory, etc.), or any combination of these storage devices.

  The communication I / F 110 is an interface connected to an external device. The communication I / F 110 is connected to an external device via an appropriate wireless or wired connection such as IEEE 802.15, IEEE 802.11, IEEE 802.3, IEEE 1284, such as Bluetooth (registered trademark), infrared connection, or optical connection. The communication I / F 110 may further include a USB connection unit to which a USB standard connection terminal is connected, a parallel interface, and the like. The control unit 102 communicates with a user terminal, a USB device, and other external devices via the communication I / F 110.

  The operation panel 112 includes a touch panel display unit and various operation keys. The operation keys include, for example, a numeric keypad, a reset key, a stop key, and a start key. The display unit displays instruction items related to printing conditions such as sheet size, number of copies, print density setting, or finishing (binding, folding), for example. An instruction for the displayed item is input from the display unit.

  The scanner unit 114 includes a built-in scanning reading unit that reads a document as an image, a document placing table, and an automatic document feeder that transports the document to a reading position. The scanning reading unit of the scanner unit 114 reads a document set on a document table or an automatic document feeder.

  The printer unit 116 includes a known image forming unit including a photosensitive drum, for example, and a developing unit using toner, for example. The printer unit 116 forms an image corresponding to the image data of the document read by the scanner unit 114 by these units or an image corresponding to the image data sent from the user terminal on the sheet.

  The sheet processing apparatus 200 processes a sheet discharged from the image forming apparatus 100 in accordance with an input instruction from the operation panel 112 of the image forming apparatus 100 or an instruction from a PC (Personal Computer).

  The sheet processing apparatus 200 includes a control unit 202, a finisher unit 210, and a heating unit 242. The control unit 202 includes a processor 204 including a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), and a memory 206. The memory 206 is a semiconductor memory, for example, and includes a ROM (Read Only Memory) that stores a control program and the like, and a RAM (Random Access Memory) that provides a temporary work area to the processor 204. The control unit 202 communicates with the control unit 102 of the image forming apparatus 100. The control unit 202 controls the finisher unit 210 and the heating unit 242 based on information received from the control unit 102 and various programs stored in a ROM or the like.

  FIG. 2 is a schematic diagram for explaining the configuration of the sheet processing apparatus.

  The sheet processing apparatus 200 discharges a sheet discharged from the image forming apparatus 100 having an image forming unit that forms an image on the sheet to the fixed tray 218 or the movable tray 238.

The finisher unit 210 of the sheet processing apparatus 200 includes an inlet roller 212, a branch member 214, a paper discharge roller 216, an outlet roller 220, a standby tray 222, a standby roller 224, a processing tray (support means) 226, An alignment member 228, a binding unit 230, a sheet bundle discharge member 232, a fixed tray 208, a movable tray 238, and a conveying member (conveying means) 240 are provided.

  The entrance roller 212 receives a sheet on which an image has been formed by the image forming apparatus 100 and conveys it to the branch member 214. The branch member 214 guides the sheet to the sheet discharge roller 216 or the exit roller 220.

  When the branching member 214 guides the sheet to the sheet discharge roller 216, the sheet discharge roller 216 discharges the sheet to the fixed tray 218. On the other hand, when the branch member 214 guides the sheet to the exit roller 220, the exit roller 220 conveys the sheet to the standby tray 222.

  The standby tray 222 temporarily holds the conveyed sheet. The standby tray 222 drops the sheet that supports the sheet onto the processing tray 226.

  The processing tray 226 receives a sheet dropped by the standby tray 222. The processing tray 226 supports the stacked sheets while the sheets are bound. The aligning member 228 aligns the lateral direction intersecting the sheet bundle conveyance direction on the processing tray 226. The binding unit 230 binds the end of the aligned sheet bundle. The binding unit 230 will be described later.

  The conveying member 240 conveys the sheet conveyed to the processing tray 226 and adjusts the position of the sheet. The conveying member 240 may be, for example, a rotating roller that can be brought into contact with or separated from the processing tray 226 or a rotatable paddle member. The conveying member 240 is controlled by the control unit 202. The conveyance member 240 conveys the sheet to a “predetermined attachment position” described later.

  The sheet bundle discharge member 232 discharges the bound sheet bundle to the movable tray 238. The sheet bundle discharge member 232 includes a bundle claw 234 that discharges the sheets bound on the processing tray 226 and a bundle claw belt 236 that drives the bundle claw. Note that the sheet bundle discharge member 232 may discharge the sheet bundle to the movable tray 238 after the alignment member 228 aligns the sheet bundle without binding the sheet bundle by the binding unit 230.

  The standby tray 222 can also directly convey and discharge the sheet to be supported toward the movable tray 238 without dropping it to the processing tray 226. In this case, the standby tray 222 and the standby roller 224 discharge the sheets one by one to the movable tray 238 without stopping the sheets on the standby tray 222.

  The movable tray 238 moves up and down. The movable tray 238 moves up and down in accordance with the discharge from the standby tray 222, the discharge from the processing tray 226, and the sheet stacking amount. The movable tray 238 has a stacking surface on which sheets discharged by the standby roller 224 or the sheet bundle discharge member 232 are stacked. The movable tray 238 has an end on the upstream side (the standby roller 224 or the sheet bundle discharge member 232 side) in the conveyance direction of the sheets stacked on the stacking surface that is lower than the end of the downstream (reverse side) sheet. It is attached to the main body of the sheet processing apparatus 200 in an inclined state.

  In addition, the sheet processing apparatus 200 includes a heating unit 242 and an insertion unit 244 that inserts a sheet bundle into the heating unit of the heating unit 242.

  FIG. 3 is a schematic diagram for explaining the binding unit 230 of the sheet processing apparatus 200. FIG. 3 shows a state where the sheet P is placed on the processing tray 226. In FIG. 3, the movable tray 238 side is the downstream side in the sheet conveying direction, the opposite side is the upstream side in the sheet conveying direction, the sheet end on the downstream side in the sheet conveying direction is the leading edge of the sheet, and the upstream end in the sheet conveying direction is the sheet end. The rear end.

  The binding unit 230 includes a first binding portion (sticking means) 300 and a second binding portion (binding means) 320. The first binding unit 300 is disposed on the sheet rear end side with respect to the processing tray 226. The first binding unit 300 sequentially sticks a pseudo-adhesive member (hereinafter referred to as an adhesive member or simply an adhesive) to a sheet conveyed to the processing tray 226. The first binding unit 300 attaches the adhesive member to a position protruding from the rear end of the sheet, and bundles the sheets. The adhesive member has a synthetic fiber such as polyester fiber or glass fiber as a base material, and has an adhesive having a property that the bonding force is weakened by heating around the base material. Therefore, the adhesive can easily break the bundle by heating. Moreover, the adhesive member can ensure the strength when the sheet bundle is bound by using polyester fiber or glass fiber as the base material.

  The second binding portion 320 is disposed on the sheet rear end side of the first binding portion 300. An adhesive member is attached by the first binding unit 300, and a band-shaped member (hereinafter, binding tool) that covers the sheet rear end portion of the bundled sheet bundle is attached.

  Next, the 1st binding part 300 is demonstrated using FIG. 3 and FIG. FIG. 4 is a schematic diagram for explaining the first binding unit 300.

  The first binding unit 300 is provided facing the supply roll 302 that supplies the adhesive member to the sheet, the pair roller 304 that sandwiches the sheet trailing edge together with the supply roll 302, the supply roll 302, and the pair. And a support frame 306 that supports the roller 304. In the present embodiment, the support frame 306 supports the supply roll 302 so as to be able to contact and separate from the sheet.

  As shown in FIG. 4, the supply roll 302 is obtained by winding a support T on which the adhesive member S is formed in a roll shape. For the sake of explanation, the support frame 306 is not shown in FIG. The first binding unit 300 includes a winding roll 308. The support T on which the adhesive member S is formed is wound around a supply roll 302 and a take-up roll 308.

  In the first binding unit 300, the support frame 306 moves along the sheet rear end, that is, in the width direction intersecting the sheet conveyance direction. That is, the supply roll 302 and the counter roller 304 move in the sheet width direction. On the other hand, the take-up roll 308 is fixedly arranged.

  Next, an attaching process for attaching an adhesive member to a sheet will be described with reference to FIGS. 4 and 5. FIG. 5 is a flowchart for explaining the pasting process.

  The sheet processing apparatus 200 (control unit 202) conveys the sheet to the processing tray 226 and stops it at a predetermined attachment position (ACT 501). Here, the “predetermined adhering position” is a position where the rear end of the sheet is nipped by the supply roll 302 and the counter roller 304, and the position where the adhesive member S attached to the rear end of the sheet protrudes from the rear end of the sheet. (A1 in FIG. 4A).

  On the other hand, the supply roll 302 and the counter roller 304 supported by the support frame 306 stand by at a position (standby position) retracted from the side edge of the sheet. In the standby position, the support frame 306 supports the supply roll 302 in a state of being separated from the pair of rollers 304 (A2 in FIG. 4B).

  When the sheet is conveyed to a predetermined pasting position, the sheet processing apparatus 200 (control unit 202) moves a pair of rollers including a supply roll 302 and a pair of rollers 304 along the sheet rear end (in the sheet width direction). (ACT 502). Here, when the movement of the roller pair starts, the supply roll 302 approaches the pair of rollers 304 and sandwiches the sheet rear end together with the pair of rollers 304. For example, the supply roll 302 may be configured to be urged against the counter roller 30 by an elastic member (not shown). In the present embodiment, the supply roll 302 comes closest to the counter roller 304 at a position beyond the side edge of the sheet and sandwiches the trailing edge of the sheet (A3 in FIG. 4B).

  The roller pair moves to the position of A4 in the arrow L direction in a state where the sheet trailing edge is sandwiched between the supply roll 302 and the pair of rollers 304. On the other hand, the winding roll 308 does not rotate while the roller pair moves from the standby position A2 to the stop position A4. As a result, the first binding unit 300 attaches the adhesive member S to the sheet (503).

  As shown in FIG. 4C, the adhesive member S includes a base material Sa made of a synthetic fiber such as polyester fiber or glass fiber, and an adhesive Sb formed around the base material Sa. The adhesive Sb has a property that the bonding force is weakened by heating.

  Subsequently, the roller pair of the first binding unit 300 starts moving in the direction of arrow R from the stop position A4 toward the standby position A2 in a state where the supply roller 302 is separated from the pair of rollers (504). At the same time, the take-up roll 308 starts to rotate and takes up the support T from which the adhesive member S has been removed. When the roller pair moves to the standby position, the sheet processing apparatus 200 (control unit 202) conveys the subsequent sheet onto the sheet on the processing tray 226 and stops it at a predetermined pasting position (ACT 505).

  In 506, the sheet processing apparatus 200 (the control unit 202) determines whether or not the subsequent sheet conveyed is the final sheet. If the subsequent sheet conveyed is not the final sheet (No in 506), the sheet processing apparatus 200 (control unit 202) returns to 502 and repeats the above-described pasting process. On the other hand, when the subsequent sheet conveyed is the final sheet (Yes in 506), the sheet processing apparatus 200 (control unit 202) ends the pasting process and proceeds to the binding process.

  In addition, the 1st binding part 300 is not limited to the structure of the roller pair mentioned above. For example, the first binding unit 300 may be configured as shown in FIG. (FIG. 6 is a schematic diagram for explaining a modification of the first binding unit 300). The first binding unit 300 illustrated in FIG. 6 includes a supply roller 302, a take-up roll 308, a plate 310, and a pasting roller 312. The supply roller 302 and the take-up roll 308 are fixedly arranged so as to be rotatable, and suspend the support T on which the adhesive member S is formed. The sheet is conveyed between the plate 310 and the support T on which the adhesive member S is formed. The affixing roller 312 is disposed at a position facing the plate 310 via the support T. When the sheet is conveyed to a predetermined bonding position, the bonding roller 312 moves toward the plate 310 and presses the adhesive member S on the support T against the rear end of the sheet (FIG. 6A). The adhering roller 312 moves in the sheet width direction in a state where the adhesive member S is pressed against the rear end of the sheet (FIG. 6B), and adheres the adhesive member S on the support T to the rear end of the sheet. The first binding unit 300 is pasted so that the adhesive member S protrudes from the rear end of the sheet.

  Next, the 2nd binding part 320 is demonstrated using FIG.3, FIG.7 and FIG.8. 7 and 8 are schematic views for explaining the second binding portion 320. FIG.

  The second binding portion 320 is a belt-like shape that covers the sheet rear end of the bundled sheet bundle and the portion of the adhesive member that protrudes from the sheet rear end (sheet rear end portion). A binding tool as a member is pasted. The second binding unit 320 includes a binding tool supply roll 322, binding tool attaching members 324 and 326, a cutter 328, a pressure roller 330, and a pressure table 332.

  The binding tool supply roll 322 is obtained by winding a binding tool U covering the sheet rear end portion in a roll shape. The binding tool supply roll 322 extends the wound binding tool U as shown in FIG. 7A. For example, an adhesive member having the same quality as the adhesive member of the first binding unit 300 is formed on the surface of the binding tool U that faces the sheet rear end side. Note that the adhesive member of the binding tool U is not limited to being the same quality as the adhesive member of the first binding portion 300. In the present embodiment, the adhesive member of the binding tool U is made of synthetic fiber such as polyester fiber or glass fiber, and has a property that the bonding force is weakened by heating.

  As shown in FIG. 7B, the binding tool attaching member 324 has a part of the extended binding tool U placed on the first surface of the sheet bundle at the rear end portion of the sheet (the upper surface of the sheet bundle in FIG. 7). paste. The cutter 328 cuts the binding tool U with an appropriate length after the binding tool attaching member 324 attaches a part of the binding tool U to the upper surface of the sheet bundle. The binding tool attaching member 326 attaches the end of the binding tool cut by the cutter 328 to the second surface (the lower surface of the sheet bundle in FIG. 7) of the sheet rear end portion.

  The pressure roller 330 and the pressure table 332 wait in a position that does not hinder the operation of the binding tool attaching members 324 and 326 while the binding tool attaching members 324 and 326 apply the binding tool U to the rear end portion of the sheet bundle. (FIGS. 7A and 7B). When the binding tool attaching members 324 and 326 apply the binding tool U to the rear end portion of the sheet bundle, the pressure roller 330 and the pressure table 332 approach each other, and the rear end of the sheet bundle to which the binding tool U is attached. The portion is narrowed (FIG. 7C).

  Subsequently, as shown in FIG. 8, the pressure roller 330 moves along the sheet width direction in a state where the rear end portion of the sheet bundle is pressed against the pressure table 332. That is, the second binding unit 320 covers the sheet bundle rear end portion with the binding tool U, and then presses with the pressure roller 330 and the pressure table 332, thereby coupling the sheet P and the adhesive member S and binding the tool. The connection between U and the sheet P is secured. The second binding unit 320 also joins the adhesive members S protruding from the rear end of the sheet, and joins the binding member U and the binding tool U protruding from the rear end of the sheet.

  The sheet bundle bundled by the first binding unit 300 and the second binding unit 320 is discharged to the movable tray 238 by the sheet bundle discharge member 232.

  According to the sheet processing apparatus 200 of the first embodiment, the bundled sheet bundle can be prevented from damaging the quality of the sheet surface and the sheet edge, unlike the binding process preceding the sheet. . In addition, when the user handles the sheet bundle, the adhesive member that protrudes from the rear end of the sheet is bent, so that the possibility that the sheet is folded to form a crease when the sheet bundle is opened is reduced.

  Next, the heating unit 242 of the sheet processing apparatus 200 according to the first embodiment will be described. As illustrated in FIG. 2, the sheet processing apparatus 200 includes a heating unit 242 and an insertion unit 244. The insertion unit 244 is an insertion port for inserting the sheet bundle into the heating unit 242. The insertion unit 244 stacks the sheet bundle with the sheet bundle rear end portion (the portion to which the adhesive member and the binding tool are attached) of the sheet bundle bundled by the binding unit 230 facing the heating unit 242 side. The heating unit 242 includes a heating unit 242a. The heating unit 242a heats the rear end portion of the sheet. As described above, the adhesive member and the binding tool are heated, so that the bonding force is weakened and the bundle can be easily disassembled. In addition, this makes it possible to easily remove the polyester fiber and the glass fiber as the base material. The heating unit 242a may be a planar heater, a commonly used lamp, or electromagnetic induction heating, and is preferably capable of heating up to the inside of the sheet bundle.

As described above, the sheet processing apparatus 200 according to the present embodiment can appropriately bundle sheets while improving sheet reusability.
(Second Embodiment)

  In the sheet processing apparatus 200 according to the second embodiment, a sheet having a size larger than the size of the sheet to be used is created in a pseudo manner by joining the sheets using a base material coated with a pseudo adhesive member. In addition, about the same structure as 1st Embodiment, description is abbreviate | omitted using the same code | symbol.

  For example, as shown in FIG. 9A, the sheet processing apparatus 200 connects A4 size sheet ends by a binding member V to create an A3 size sheet, or as shown in FIG. 9B. In addition, an enlarged sheet capable of opening and closing the original in a bellows shape is created by attaching the binding member V to the sheet end alternately. The binding member V has a layer using polyester resin (FIG. 9 (c)) or glass fiber (FIG. 9 (d)) as a base material, and the above-described pseudo adhesive member is in contact with the sheet surface. It has been applied.

  As shown in FIG. 10, the sheet processing apparatus 200 includes a processing tray 400 on which a plurality of sheets are placed side by side, a supply unit 402 that attaches the binding member V to the end portion of the sheets arranged on the processing tray 400, and a pressure roller 404 and a pressure table 406 are provided. Means for conveying the sheets to the processing tray 400 and arranging them appropriately is not particularly limited, and an optimum means such as a sheet discharge position to the processing tray 400, movement control and alignment after discharge may be used. For example, it is possible to use the standby tray 222 shown in FIG. For example, when arranging two sheets, if the sheets are arranged on the upstream side in the sheet conveyance direction, after passing through the standby tray 222, the sheet is dropped from the rear end of the sheet to the processing tray 400, and the sheet is disposed on the downstream side in the sheet conveyance direction. In the case of arranging the sheets, it is possible to adopt a configuration in which the sheet is directly supplied to the processing tray 400 without going through the standby tray.

  The supply unit 402 may be a stapler that drives out the binding member V instead of the metal needle. The supply unit 402 is disposed so as to be able to come into contact with and separate from the processing tray 400. When the sheet bundle is bundled, the supply unit 402 moves toward the processing tray 400 and presses the binding member V by narrowing the sheet between the processing tray 400. Affix it so as to straddle the edges of the two sheets. The supply unit 402 is movable in the width direction intersecting the sheet conveyance direction, and attaches the binding member V to an appropriate location based on the sheet size or a user instruction. The plurality of sheets to which the binding member V is attached are moved to a position where the pressure roller 404 and the pressure table 406 are disposed by the rotation roller 408, for example.

  The pressure roller 404 is disposed so as to be able to contact and separate from the pressure table 406. The pressure roller 404 and the pressure table 406 strengthen the bonding of the binding member V to the sheet. The pressure roller 404 moves in the sheet joint (sheet width direction) along the joint of the sheets joined together by the binding member V in a state where the sheet is pressed against the pressure table, thereby strengthening the joining of the binding member V to the sheet. . For example, the pressure roller 404 and the pressure table 406 may have the same configuration as the pressure roller 330 and the pressure table 332 described above.

  As with the adhesive of the first embodiment, the binding member V of the present embodiment is heated to weaken the bonding force and can be easily removed from the sheet.

  As described above, the sheet processing apparatus 200 according to the present embodiment can appropriately bundle sheets while improving sheet reusability.

  Note that the image forming apparatus 100 described above may form an image using a “decolorable color material (erasable color material)” such as decolorable toner or decolorable ink. The erasable color material includes a color developing compound, a color developer, and a color erasing agent. Examples of the color developing compound include leuco dyes. Examples of the developer include phenols. The decolorizer includes a substance that is compatible with the color developing compound when heated and does not have an affinity for the developer. Colors that can be erased develop color due to the interaction between the color developing compound and the developer, and the interaction between the color developing compound and the developer is interrupted by heating above the color erasing temperature. To do. In this case, since the sheet can be reused after decoloring, it is more preferable.

  Note that the entity that executes each operation of the above-described embodiment is an entity relating to a computer, such as hardware, a complex of hardware and software, software, software being executed, and the like. For example, the subject that performs the operation is a process, processor, object, executable file, thread, program, and computer executed on the processor, but is not limited thereto. In addition, a process or thread may perform a plurality of subjects that perform an operation.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 100 Image forming apparatus 200 Sheet processing apparatus 202 Control part 230 Binding unit 240 Conveyance member 300 1st binding part 302 Supply roll 304 Counter roller 312 Adhesion roller 320 2nd binding part 322 Binding tool supply rolls 324 and 326 Binding tool affixing member 330 Pressure roller 332 Pressure table

Claims (5)

Transport means for transporting up to the final sheet to a predetermined position;
Wherein the conveying means an adhesive member is supplied to the conveying direction upstream side end portion of each sheet that is transported to the predetermined position, and, with a portion of the adhesive member to protrude from the conveying direction upstream side end portion of the sheet Affixing means for bundling the conveyed sheets ; and
Is disposed upstream of the pasting means along the conveyance direction of the sheet, cover the adhesive member is partially and our said end of sheets bundling created projecting from said end portion by said attachment means A binding means for binding the sheet bundle by supplying the binding member as described above, and joining the binding member with the protruding adhesive member and the protruding adhesive member;
A sheet processing apparatus comprising:   The sheet processing apparatus according to claim 1, wherein the binding unit joins the binding member protruding from an end of the sheet and the binding tool. The binding means described together with bonding the said adhesive member between the protruding from an end portion of the sheet, to claim 2, characterized in that for bonding the binding tool and the adhesive member protruding from an end portion of the sheet Sheet processing equipment. The sheet processing apparatus according to claim 3 , wherein the binding unit includes a pressing unit that presses the binding tool against the sheet end after the end of the sheet is bound by the binding tool. The adhesive member includes an adhesive bonding strength is reduced by heating, of claims 1 to 4 wherein the adhesive is characterized by consisting of a synthetic fiber as a base material formed around The sheet processing apparatus according to claim 1.

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