JP5223345B2 - Image forming body - Google Patents

Description

  The present invention uses a latent image technology as a method for preventing counterfeiting and authenticating securities such as banknotes, gift certificates, cash vouchers, stock certificates, bonds and the like, and uses a latent image technique to verify a latent image embedded background pattern. The present invention relates to an image forming body that does not need to be separately provided.

  Conventionally, forgery prevention measures for securities such as banknotes, gift certificates, cash vouchers, stock certificates, and bonds have been pasted with media that are difficult to forge. In this case, authenticity determination is performed by visual determination (overt function) or determination using a verifier (covert function).

  However, an anti-counterfeit medium that can be visually determined for authenticity is easily forged. For this reason, an image forming body that needs to retain a copy prevention function, a forgery prevention function, and a security function is increasingly used. One of the image forming bodies as a countermeasure against such a forgery. For example, there is an image forming body in which an image can be observed by using a line sheet provided with a line pattern of many parallel lines on a transparent film.

  In such an image forming body, since it is a relatively simple pattern, in the case of a copy by a copy or a scanner, the line pattern can be reproduced by copying, and the same function can be maintained in the copy. Furthermore, since the pattern is simple, those with knowledge can be produced relatively easily, and have a low effect as a counterfeit prevention measure.

  Therefore, as a method to prevent forgery and authenticity of securities, a technology that uses latent image technology to check the presence of an embedded image by overlaying a verification film on the background pattern with embedded latent image is proposed. Has been. (For example, refer to Patent Document 1).

  This proposed method is an effective anti-counterfeiting measure. However, a separate verification film is required for authenticity determination, and each verification film is prepared according to the pattern of the embedded image. It is necessary and is very complicated and authentication is not easy.

Prior art documents are shown below.
JP 2001-213042 A

  The present invention is intended to solve such problems of the prior art, and an image forming body that can easily prevent counterfeiting and authenticate securities such as banknotes, gift certificates, cash vouchers, stock certificates, bonds, etc. The purpose is to provide.

The present invention has been made to solve the above-described problems, and the invention according to claim 1 of the present invention is embedded in the tint block printing unit in the same surface or different surfaces of the opaque support. A latent image device comprising a latent image portion and a verification device comprising a perforated portion formed by a plurality of through-holes having the same function as the verification film, and deforming the support to the latent image device latent image appeared when the superposed verification device Te, the basis weight of the support is an image forming body, which is a 50 to 150 g / m ^2.

According to a second aspect of the present invention, in the image forming body according to the first aspect, the perforation (4A) diameter (φ) of the perforated portion (4) is in a range of 0.1 mm <φ <2.0 mm. The image forming body is characterized in that the pitch (P) between the perforations (4A) is in the range of φ <P <3φ.

The invention according to claim 3 of the present invention provides a plurality of latent image devices having the same functions as the latent image device and the verification film, which are composed of latent image portions embedded in the tint block printing portion on the same surface or different surfaces of the opaque support. A verification device comprising a perforated portion formed by perforating holes and non-perforating holes, and when the verification device is superposed on the latent image device by deforming the support, The image forming body is characterized in that the basis weight of the support is 50 to 150 g / m ² .

  According to a fourth aspect of the present invention, in the image forming body according to the third aspect, the perforated portion (4A) and the non-perforated perforated portion (4B) of the perforated portion (4) are provided vertically or obliquely. It is an image forming body characterized by being formed.

  The image forming body according to claim 5 of the present invention is the image forming body according to claim 3 or 4, wherein the perforated portion (4) is provided with a hologram transfer layer (10). It is.

  The image forming body according to the present invention has a plurality of through-holes having the same function as the latent image device and the verification film formed of the latent image portion embedded in the copy-forgery-inhibited pattern printing portion on the same surface or different surfaces of the support. A verification device comprising a verification device comprising a perforated portion formed by the above-described method, and a latent image appears when the support is deformed and the verification device is superimposed on the latent image device. It is possible to accurately and easily determine the authenticity of securities using only the medium without using.

  In addition, a plurality of through holes and non-through holes having the same function as the latent image device and the verification film formed of the latent image part embedded in the tint block printing part on the same surface or different surfaces of the support are provided. A verification device composed of the formed drilling portion, and the latent image appears when the support is deformed and the verification device is superimposed on the latent image device. Authentication can also be determined.

  Further, the forgery prevention effect can be further obtained by superimposing the non-penetrating perforated portion and the latent image image forming portion.

  The embodiment of the present invention will be described in detail with reference to FIGS. 1 to 16, but is not particularly limited thereto.

  FIG. 1 is a plan view showing an embodiment of the image forming body according to the present invention, and FIG. 2 is the same as the support when the verification device is superimposed on the latent image device of the image forming body according to the present invention. FIG. 3 is a plan view showing a state in which the support is deformed so that the surfaces face each other. FIG. 3 shows a latent image image that appears when the image forming body according to the present invention is deformed and the verification device is superimposed on the latent image device. FIG. 4 is a plan view showing another embodiment of the image forming body according to the present invention. FIG. 5 is a plan view showing the deformation of the image forming body according to the present invention. FIG. 6 is a plan view showing another embodiment of the latent image that appears when superimposed on the device, and FIG. 6 is a side sectional view showing one embodiment of the XX line section of the punched portion in FIG. 7 is a plan view showing one embodiment of the layer structure of the hologram transfer film. 8 is a side cross-sectional view showing one embodiment of the YY line cross section of the drilling section in FIG. 4, and FIG. 9 shows another embodiment of the YY section of the drilling section in FIG. FIG. 10 is a side cross-sectional view, FIG. 10 is a side cross-sectional view showing another embodiment of the YY line cross section of the drilling section in FIG. 4, and FIG. 11 is a YY line cross section of the drilling section in FIG. FIG. 12 is a side sectional view showing still another embodiment of the present invention, FIG. 12 is an explanatory view for explaining the principle of the latent image of the image forming body according to the present invention, and FIG. 13 is based on the line pattern of FIG. FIG. 14 is an enlarged plan view of a K portion of a latent image, FIG. 14 is a plan view of a visualized line sheet for visualizing the latent image, and FIG. 15 is a plan view of the visualized line sheet of FIG. FIG. 16 is a plan view showing an embodiment in a state where the latent image of FIG. 12 is visualized. .

  As shown in FIG. 1, an image forming body according to an embodiment of the present invention includes a latent image portion (3) embedded in a tint block printing portion (2) on the same or different surface of a support (1). A latent image device (A) and a verification device (B) comprising a perforated portion (4) formed by a plurality of perforated holes (4A) having the same function as the verification film. is there.

  When the latent image device (A) and the verification device (B) are present on the same surface of the support (1), as shown in FIG. 2, the latent image device (A) is deformed into two inwardly. As shown in FIG. 3, the verification device (B) is superimposed on the outer surface of the verification device (B) composed of the overlapped punching portion (4) and embedded in the tint block printing unit (2). The latent image portion of the latent image portion (3) appears.

  If the latent image device (A) is not in the same plane of the support (1) but on a different side of the back surface, the verification device (B) may be present at a position where it is overlapped. In this case, the latent image device (A) side is folded in half so that the latent image device (A) and the verification device (B) exist in the same plane of the support (1). By superimposing the verification device (B) on the latent image device (A), as shown in FIG. 3, the tint block printing unit is formed on the outer surface of the verification device (B) including the superimposed punching unit (4). The latent image portion (3) embedded in (2) appears.

  The diameter (φ) of the perforations (4A) of the perforated portion (4) is in the range of 0.1 mm <φ <2.0 mm, and the pitch (P) between the perforations (4A) is φ <P <3φ. A range is preferable.

  The shape of the perforations (4A) is not particularly limited, and may be a round shape, an oval shape, a square shape, or the like.

In addition, as shown in FIG. 6, a method for forming a plurality of through holes (4A) having the same function as the verification film uses a CO ₂ laser, a YAG laser, a hole punch, a perforation, a needle, or the like. For example, a fine drilling device can be used.

  Here, the support (1) that can be used in the present invention will be described. The material of the support (1) is made of paper, plastic film, plastic sheet or the like. At that time, the support (1) may or may not be flexible, but it is more common to have flexibility when bent than a support that is not flexible. Therefore, it is preferable to have flexibility. In addition, the transparency may be opaque or transparent.

Examples of opaque materials include paper such as beeswax, cotton, manila hemp, flax and other securities, natural Japanese paper using wood pulp natural fibers, and wood pulp natural fibers and synthetic fibers. Paper such as mixed Japanese paper, synthetic Japanese paper using only synthetic fibers, fine paper, art paper, coated paper, synthetic paper, metal foil, etc. can be used. Incidentally, the basis weight of the paper is in the range of 50 to 150 g / m ² is preferred.

Next, as a transparent thing, the plastic film and sheet | seat produced by the extending | stretching process can be used, for example. There are uniaxially stretched and biaxially stretched films depending on how to stretch. These include cellophane, polycarbonate (PC), polyethylene (PE), polypropylene (PP), ethylene vinyl alcohol (EVOH), polyvinyl alcohol (PVA), polyvinyl chloride (PVC), polyethylene naphthalate (PEN), polyethylene Examples include terephthalate (PET), nylon (Ny), acrylic, and triacetyl cellulose (TAC) film.

  In the present invention, as the paper, it is possible to use paper that does not provide a watermark image in the paper manufacturing process or paper that appropriately includes a watermark image, and the latent image portion (3). A pattern such as a colored pattern or a fine line pattern, an arabesque pattern, a character, a number, or the like may be preliminarily printed on a paper surface in an area other than the background pattern printing unit (2) in which is embedded. In addition, the said perforation process part (4) has no restriction | limiting of the presence or absence of printing.

  Next, the printing method for printing the tint block or the like can be printed at a predetermined position by a known printing method such as an offset printing method, an intaglio printing method, or a gravure printing method.

  The offset printing method is a method of printing using an offset ink using a plano-intaglio plate, a PS plate, or a waterless lithographic plate having an image line portion lowered by about 3 μm.

  The intaglio printing method is a method in which a printing plate having a recessed image area is used and printing is performed using intaglio ink.

  In the gravure printing method, a copper plating is applied to the surface of an iron cylinder (cylinder) to form a base, a peeling layer is provided on the copper plating surface, and further copper plating is applied to make the surface mirror-like. A concave (cell) is created on the polished copper surface by engraving or corrosion, and gravure printing ink in the cell is transferred to the substrate surface. It is a method.

  As the printing ink for printing the tint block and the like, it is necessary to appropriately select the printing ink depending on the printing method. For example, printing ink mainly composed of boil oil, urethane resin, epoxy resin, polyester Mainly thermosetting resins such as resins, UV curable resins that are polymerized and cured by ultraviolet rays, or thermoplastic resins such as polyvinyl chloride, polyvinyl chloride-vinyl acetate copolymers, acrylic resins, and cellulose resins. Printing inks with resin as ink binder or ink vehicle can be used, and cationic polymerization initiators such as p-nitrobenzenediazonium hexafluorophosphate and bisphenol A-epichlorohydrin type epoxy resin, novolak type epoxy resin, alicyclic type Mainly epoxy resin such as epoxy resin Epoxy resin that can be cationically polymerized by ultraviolet irradiation with addition of volatile or non-volatile non-reactive diluents such as reactive diluents, organic solvents, plasticizers, etc. The resin composition can be used as a printing ink.

  Next, as shown in FIG. 4, an image forming body according to another embodiment of the present invention has a latent image portion embedded in the tint block printing portion (2) on the same or different surface of the support (1). The latent image device (A) comprising (3) and a perforated portion (4) formed by a plurality of through-holes (4A) and non-through-holes (4B) having the same function as the verification film. A verification device (B), and further, a hologram transfer layer (10) is provided in the perforated portion (4).

As in the first embodiment, when the latent image device (A) and the verification device (B) exist in the same plane of the support (1), the latent image device (A) is deformed into two inwardly. As shown in FIG. 5, the verification device (B) is superimposed on the outer surface of the verification device (B) composed of the overlapped drilling unit (4) and embedded in the tint block printing unit (2). The latent image portion of the latent image portion (3) appears.

  If the latent image device (A) is not in the same plane of the support (1) but on a different side of the back surface, the verification device (B) may be present at a position where it is overlapped. In this case, the latent image device (A) side is folded in half so that the latent image device (A) and the verification device (B) exist in the same plane of the support (1). By superimposing the verification device (B) on the latent image device (A), as shown in FIG. 5, a tint block printing unit is formed on the outer surface of the verification device (B) including the superimposed punching unit (4). The latent image portion (3) embedded in (2) appears.

  That is, by superimposing the tint block printing portion (2) and the punching portion (4), as shown in FIG. 5, the image forming portion [piercing: second penetrating portion (4A-2)] and punching: The character “TOP” is formed by the non-penetrating portion (4B). [Perforation: first through portion (4A-1)] is a non-image forming portion using a latent image.

  In the image forming body of another embodiment of the present invention, a part of the perforated portion (4) is covered in a stripe shape by the hologram transfer layer (10) of the hologram transfer film (5) as a forgery countermeasure layer. ing.

  In addition to the hologram transfer layer (10), the anti-counterfeit layer may be, for example, a multilayer thin film whose color changes depending on an observation angle by applying optical interference by an optical thin film, a reflective film using a metal material, or the like. Absent. In particular, those provided with a reflective thin film that enhances the optical effect are preferable.

  For example, in the case of a surface relief type hologram provided with the above-described reflective thin film, simply observing the image forming body due to the optical action due to the combination of the fine irregularities related to the diffraction structure and the reflective thin film It is difficult to visually recognize the presence of the perforations (4A, 4B) in the perforated portion (4). However, when the image forming body is observed under light (or applied to a backlight), the presence of the perforations (4A, 4B) can be visually recognized. This effect can be applied as a simple authentication method.

  As shown in FIG. 7, the layer structure of the hologram transfer film (5) is such that a release layer (6), a hologram forming layer (7), a reflective thin film layer (8), and an adhesive are bonded to one side of a film substrate (11). The layer (9) is sequentially formed, and the four layers of the release layer (6), the hologram forming layer (7), the reflective thin film layer (8), and the adhesive layer (9) are combined into a hologram transfer layer (10 ).

  The hologram transfer layer (10) thus obtained is provided as a forgery countermeasure layer on the perforated part (4) by a thermal transfer method.

  The film substrate (11) is a support for the hologram transfer layer (10) and is not particularly limited as long as it has a certain degree of rigidity and surface smoothness. For example, polyethylene terephthalate A polymer resin film such as a film, polyethylene naphthalate, polycarbonate film, or polypropylene film can be used.

  The release layer (6) is not particularly limited as long as it is stable in post-processing, and examples thereof include thermoplastic acrylic resins, chlorinated rubber resins, vinyl chloride-vinyl acetate copolymers, and cellulose resins. , Chlorinated polypropylene resins, or those obtained by adding oil silicon, fatty acid amide, or zinc stearate to these. Moreover, an inorganic substance may be sufficient.

The release layer (6) is formed by coating the resin or a mixture of the resins with a coating (or ink), coating method such as bar coating, blade coating, air knife coating, grab roll coating, gravure printing, silk By applying and drying by a printing method such as screen printing, it is formed to a thickness of about 1 to 2 μm.

  The hologram forming layer (7) is made of a thermoplastic resin such as polycarbonate resin, polystyrene resin or polyvinyl chloride resin, unsaturated polyester resin, melamine resin, epoxy resin, urethane (meth) acrylate, polyester (meth) acrylate, epoxy ( Examples thereof include thermosetting resins such as (meth) acrylate, polyol (meth) acrylate, melamine (meth) acrylate, and triazine (meth) acrylate, or mixtures thereof, and thermoformable materials having radically polymerizable unsaturated groups. . Any one can be used as long as it has stability capable of forming a hologram image. The hologram image is not particularly limited, but, for example, a relief hologram that expresses an image with minute irregularities of about 0.5 to 2 μm is preferable.

  The reflective thin film layer (8) is formed by laminating a plurality of ceramics having different refractive indexes alternately with a specific film thickness. For example, magnesium oxide (refractive index n = 1.6) is used as a low refractive index layer. , Silicon dioxide (n = 1.5), magnesium fluoride (n = 1.4), calcium fluoride (n = 1.3-1.4), cerium fluoride (n = 1.6), fluoride One of aluminum (n = 1.3) and aluminum oxide (n = 1.6), and as a high refractive index layer, titanium dioxide (n = 2.4), zirconium dioxide (n = 2.0), Zinc sulfide (n = 2.3), zinc oxide (n = 2.1), indium oxide (n = 2.0), cerium dioxide (n = 2.3), tantalum oxide (n = 2.1) It is a composite layer in which one of them is laminated with a predetermined film thickness. This transparent vapor deposition layer can also provide two or more layers which consist of said combination.

  The reflective thin film layer (8) reflects or transmits light in a predetermined wavelength region, and changes the viewing angle, thereby changing the optical path length in the thin film and changing the color of transmitted light or reflected light. It is what you see. Thereby, the forgery prevention effect is exhibited.

  Further, any film forming method can be used for the reflective thin film layer (8) as long as the film thickness can be controlled. In particular, the dry method is excellent for the formation of a thin film, and a normal vapor deposition method, a physical vapor deposition method such as sputtering, or a chemical vapor deposition method such as a CVD method can be used for this.

  The adhesive layer (9) may be a commonly used material as long as it does not alter or affect the reflective thin film layer (8). For example, vinyl chloride-vinyl acetate copolymer, acrylic resin, polyester Although there are adhesives such as a polyamide resin, it is not particularly limited thereto.

  The adhesive layer (9) is formed by applying and drying the adhesive by a coating method such as bar coating, blade coating, air knife coating or gravure roll coating, or a printing method such as gravure printing or silk screen printing. Thus, it is formed to a thickness of about 0.5 to 2 μm.

  A thermocompression-bonding roll or a heating press was used so that the hologram transfer layer (10) of the hologram transfer film (5) having the material structure as described above covered a part of the perforated part (4) of the support (1). Transfer by thermal transfer method. When the hologram transfer layer (10) is peeled off by being fixed to the paper (1) by heating and pressing and integrated, the correlation peeling phenomenon does not occur and the peeling cannot be made cleanly. If it is further forcibly removed, a part of the perforations (4A, 4B) of the perforated portion (4) is destroyed, so that the appearance and the like are deteriorated, and forgery or tampering is performed at a glance. it can.

  Further, as shown in FIGS. 8 to 11, the penetrating hole (4A) and the non-penetrating hole (4B) provided in the punching portion (4) are provided vertically or obliquely. By providing the image vertically or obliquely in this way, it is easy to determine the authenticity by simply passing light through the image forming body.

  FIG. 8 shows the formation of the perforated portion (4) by forming the perforated portion (4A) and the non-perforated perforated portion (4B) perpendicularly penetrating the support (1). FIG. 5 is a side cross-sectional view showing one example of a cross section taken along the line YY of the punched portion of FIG. 4 with a hologram transfer layer (10) applied to a portion thereof.

  FIG. 9 shows that a perforated part (4A) and a non-perforated perforated part (4B) are provided after the hologram transfer layer (10) is applied to a part of the perforated part (4) of the support (1). FIG. 5 is a side sectional view showing another embodiment of the cross section taken along the line YY of the punching portion of FIG. 4.

  FIG. 10 is a perspective view of the support body (1), in which a perforation (4A) and a non-perforation perforation (4B) penetrating obliquely are formed to form a perforation processing section (4), and then the perforation processing section (4) FIG. 5 is a side cross-sectional view showing another example of a cross section along line YY of the punched portion of FIG. 4 with a hologram transfer layer (10) applied to a part thereof.

  FIG. 11 shows that after a hologram transfer layer (10) is applied to a part of the perforated part (4) of the support (1), a vertically perforated hole (4A) and a non-perforated hole (4B) are provided. FIG. 9 is a side cross-sectional view showing still another embodiment of the cross section taken along the line YY of the punched portion of FIG. 4.

  By the way, the principle of the latent image used in the image forming body of the present invention will be described with reference to FIGS.

  As shown in FIG. 12, in the image forming body in which the normal print image (1a) and the line pattern (30) are printed on the support (1), the line pattern (30) includes a latent image line pattern. (30a) (for example, a hexagonal pattern portion as shown), and the latent image line pattern (30a) in this line pattern (30) is a latent image as shown in the K partial enlarged view of FIG. The pitch phase of the parallel straight lines (line) of the inner area and the outer area of the line pattern (30a) is shifted by a half pitch along the part corresponding to the boundary between both areas (contour line of the latent image line pattern (30a)). In the figure, the line phase shift part (30b) is formed along the outline of the hexagonal figure which is the latent image line pattern (30a).

  That is, the lines with the same line pitch of 1: 1 line (parallel straight line) ratio of the line part (70a) and the non-line part (70b) formed on the support (1) by an offset printing method or the like. A line pattern (30) in which (70) is arranged in parallel is formed, and the line phase is shifted by a half pitch with respect to the line pattern (30) in the line pattern (30) region. In this configuration, the latent image line pattern (30a) is provided. The line pattern (30) is formed by a fine embossing on the support (1) using, for example, a support (1) made of an aluminum foil, in addition to the printing method. It is also possible.

The parallel straight lines (line) (70) constituting the line pattern (30) have a very narrow and fine line width. Further, the line (70) of the latent image line pattern (30a) formed in the inner area of the line pattern (30) is shifted in pitch phase from the line (70) of the outer area. Furthermore, since the line (70) is fine, the latent image line pattern (30a) is visually (apparently) not visually observed as an image, and the support ( 1) Only a normal print image (1a) and a line pattern (30) on which images such as characters and pictures are printed on both ends are observed. In addition, since the line width of the line pattern (30) is composed of a very fine line width or the like, it does not interfere with the print design of the normal print image (1a). The normal print image (1a) may be used as a sketch.

  Next, as shown in FIG. 14, a visualized image in which a visualization line pattern (50) having the same line ratio and the same line pitch as the line pattern (30) is formed on a transparent substrate (60). A chemical conversion sheet (C) is produced. The visualized line sheet (C) is a known printing method such as offset printing, gravure printing, letterpress printing, silk screen printing, etc. on the transparent substrate (60) as shown in the L partial enlarged view of FIG. Alternatively, a line (7) having the same line pitch of 1: 1 (parallel straight line) ratio of the line part (70a) and the non-line part (70b) formed by foil stamping, coating, inkjet method, etc. is 1: 1. It consists of a parallel arrangement.

  The transparent substrate (60) is made of, for example, polyethylene resin (PE), polypropylene resin (PP), polyethylene terephthalate resin (PET), vinyl chloride resin (PVC), polyimide resin (PI), polystyrene resin (PS), etc. A transparent plastic film or sheet made of a thermoplastic resin, further glass or the like is used.

  When the visualized line sheet (C) thus obtained is superimposed in parallel on the line pattern (30) on the support (1), it is formed in the area of the line pattern (30). Since the lines in the inner area and the outer area of the latent image line pattern (30a) thus formed are shifted by a half pitch, the lines in the visualization line pattern (50) and the support (1 ) Each of the lines that are shifted by a half pitch between the inner area and the outer area of the latent image line pattern (30a) of the line pattern (30) formed on the line pattern overlaps each other (the line pattern (30 ) And a part that does not overlap (a line of the line pattern (30) is not hidden) occurs.

  As a result, as shown in FIG. 16, for example, the line of the line pattern (30) that does not overlap the line of the visualization line pattern (50) becomes the latent image line pattern (30a) (for example, As shown in the figure, if the line constituting the line pattern (30) in the hexagonal pattern portion) region is a line, each line of the line pattern for visualization (50) [an opaque line Portion (70a)] is visually observed through the transparent portion [transparent non-linear portion (70b)], and the latent image line pattern (30a) is visualized, and a positive image of the positive image Observed as (D).

  On the other hand, for example, the line of the line pattern (30) that does not overlap the line of the visualization line pattern (50) is a latent image line pattern (30a) (for example, a hexagonal pattern as shown in the figure). Part) If the line constituting the line pattern (30) outside the area is a line between each line [opaque line part (70a)] of the line pattern for visualization (50) The latent image line pattern (30a) is visualized through the transparent portion [transparent non-linear portion (70b)], and is visualized as a negative image (D).

  In the present invention, the entire shape of the line pattern (30) region illustrated in FIGS. 12 and 16 is a linear strip shape region disposed in the horizontally long direction, but is not limited thereto, and is a straight line disposed in the vertically long direction. It may be a strip-shaped region, for example, a linear strip shape region, a wavy line shape, a curved line shape, or a combination thereof, or a square dot shape, a round dot shape, a mesh dot shape, a lattice dot shape, or these Each may be a finely divided shape area such as a dot shape by a combination of the above.

  The line pattern (30) region may be formed over substantially the entire region on the support (1) or divided into one or several places. Furthermore, a plurality of latent image line patterns (30a) may be formed at different locations in the line pattern (30) region.

The line pitch of the line (70) of the line pattern (30) and the line (70) of the line pattern (50) for visualization of the visualized line sheet (C) is 20 to 20, respectively. It is preferable to set it within the range of 2000 μm, preferably 20 to 1000 μm. When the line pitch is less than 20 μm, the line part (70a) and the non-line part (1/2) with respect to the pitch 70b), the line width of each of the latent image line patterns (30a) is too fine, and the visualized line sheet (C) is superposed and observed. However, reproducibility is poor and visualization becomes weak.

  On the other hand, when the pitch of the line (70) is larger than 2000 μm, the line widths of the line part (70a) and the non-line part (70b) are extremely thick line widths larger than 1000 μm, respectively. The design of (30a) is also rough, and it is difficult to see when the visualized line sheet (C) is superimposed and visualized, so that visual recognition may not be possible. The latent image line pattern (30a) may be discriminated without interposing the line sheet (C).

  Therefore, the line width (1/2) of the line part (70a) and the non-line part (70b) of each of the lines (70) is either in the range of 10 to 1000 μm, preferably in the range of 10 to 500 μm. It is desirable to set it.

  In the present invention, the line pitch of the line (70) of the line pattern (30) and the latent image line pattern (30a) and the line (70) of the visualized line sheet (C) is set to 20 to 1000 μm. By setting the line width (1/2) of the line part (70a) and non-line part (70b) of the line (70) within the range of 10 to 500 μm, the visualized line sheet ( When C) is superposed and aligned, an image forming body having a good latent image line pattern (30a) in which a clear visible image (D) appears is obtained.

  The image forming body according to the present invention using the principle of the latent image as described above has a latent image device composed of a latent image portion embedded in the tint block printing portion on the same surface or a different surface of the support and a verification image. A verification device comprising a perforated portion formed by a plurality of through-holes having the same function as the film, and the latent image when the support is deformed and the verification device is superimposed on the latent image device With the appearance of the image, it is possible to accurately and easily determine the authenticity of securities by using only the medium without using a special verification film.

  In addition, a plurality of through holes and non-through holes having the same function as the latent image device and the verification film formed of the latent image part embedded in the tint block printing part on the same surface or different surfaces of the support are provided. A verification device comprising a formed perforated portion, and a latent image appears when the support is deformed and the verification device is superimposed on the latent image device, thereby providing a special verification film. The authenticity of securities can be accurately and easily determined by using only the medium without using it. Further, it is possible to determine the authenticity at the punching section itself. Furthermore, the forgery prevention effect can be further obtained by superimposing the non-penetrating perforated portion and the latent image image forming portion.

  Furthermore, by providing the verification device with a forgery prevention layer made of a hologram transfer layer, it becomes possible to further improve the forgery prevention effect and prevent tampering.

FIG. 2 is a plan view showing an embodiment of an image forming body according to the present invention. It is a top view which shows the state which deform | transformed the support body so that the same surface of a support body might face when a verification device was piled up with the latent image device of the image forming body which concerns on this invention. It is a top view which shows one Example of the latent image which appeared when the image forming body based on this invention was deform | transformed and the verification device was superimposed on the latent image device. FIG. 6 is a plan view showing another embodiment of the image forming body according to the present invention. It is a top view which shows the other Example of the latent image which appeared when the image forming body based on this invention was deform | transformed and the verification device was piled up on the latent image device. It is a sectional side view which shows one Example of the XX line cross section of the punching part in FIG. It is a top view which shows one Example of the layer structure of a hologram transfer film. It is a sectional side view which shows one Example of the YY sectional view of the drilling part in FIG. It is a sectional side view which shows the other Example of the YY sectional view of the drilling part in FIG. It is a sectional side view which shows the other Example of the YY sectional view of the drilling part in FIG. It is a sectional side view which shows the further another Example of the YY sectional view of the drilling part in FIG. It is explanatory drawing for demonstrating the principle of the latent image of the image forming body which concerns on this invention. FIG. 13 is an enlarged plan view of a K portion of a latent image according to the line pattern of FIG. 12. It is a top view of the visualization line sheet for visualizing a latent image. It is L partial enlarged plan view of the visualization line | wire sheet | seat of FIG. It is a top view which shows one Example of the state which visualized the latent image of FIG.

Explanation of symbols

A ... Latent image device B ... Verification device C ... Visualized line sheet D ... Visualized image K ... Enlarged portion L ... Enlarged portion 1 ... Support 1a ..Normally printed image 2 ... tint block printing part 3 ... latent image part 4 ... punching process part 4A ... penetrating through hole 4B ... non-penetrating punching 4A-1 ... by latent image Non-image forming part [perforation: first penetration part (4A-1)]
4A-2: Image forming portion by latent image [perforation: second penetrating portion (4A-2)]
DESCRIPTION OF SYMBOLS 5 ... Hologram transfer film 6 ... Release layer 7 ... Hologram formation layer 8 ... Reflective thin film layer 9 ... Adhesive layer 10 ... Hologram transfer layer 11 ... Film base material 30.・ ・ Line pattern 30a ... Latent image line pattern 30b ... Line line phase shift part 50 ... Visualization line pattern 60 ... Transparent substrate 70 ... Line 70a ...・ Line part 70b ・ ・ ・ Non-line part

Claims (5)

A perforated portion formed by a plurality of perforations having the same function as a latent image device and a verification film, which are composed of a latent image portion embedded in a tint block printing portion, on the same surface or different surfaces of an opaque support. A latent image formed when the support is deformed and the verification device is superimposed on the latent image device, and the basis weight of the support is 50 to 150 g / m ² . imaging member wherein there.   The perforation diameter (φ) of the perforated portion is in a range of 0.1 mm <φ <2.0 mm, and a pitch (P) between the perforations is in a range of φ <P <3φ. 1. The image forming body according to 1. A plurality of perforated holes and non-perforated holes having the same function as the latent image device and the verification film, which are composed of latent image portions embedded in the copy-forgery-inhibited pattern printing portion, on the same surface or different surfaces of the opaque support. And a verification device composed of the formed perforated portion, and the latent image appears when the support is deformed and the verification device is superimposed on the latent image device, and the basis weight of the support is 50. An image forming body, which is ˜150 g / m ² .   The image forming body according to claim 3, wherein the perforated portion and the non-perforated perforated portion of the perforated portion are provided vertically or obliquely.   5. The image forming body according to claim 3, wherein a hologram transfer layer is provided in the perforated portion.

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