JP2000103186A - Certificate and sheet therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a certificate or a sheet for the certificate having enhanced visibility of a ground pattern, a print or particularly print without impairing a forgery preventive effect by providing a metallic luster layer at least on a part of a base material sheet and providing a colored image reception layer made of a colored transparent resin on the luster layer. SOLUTION: In the sheet for a certificate, a magnetic recording layer 2 is laminated on a lower surface of a base material sheet 1, and a vapor anchor layer 3, a metallic luster layer 4 on a part of the layer 3, and a colored image reception layer 5 on the anchor 3 containing the layer 4 are sequentially laminated on an upper surface of the sheet 1. A ground pattern 6 may be formed on the layer 5. As a metal of the later 4, an aluminum is easily used, but the other metal may be used. The layer 5 is used for receiving an image to improve printability, setting printability of the overall surface including the layer 4 or particularly when the layer 4 is printed or set, its adhesive strength is raised since its adhesive strength is low.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed ticket such as a regular ticket for transportation (hereinafter referred to as a commuter ticket), an admission ticket, a dining ticket for a cafeteria, a pass card, and a point card issued by a store according to the sales amount. The present invention relates to an improved certificate for certifying qualifications or other qualifications generated by paying an amount, and a printing sheet therefor.

[0002]

2. Description of the Related Art Since the above certificate has a certain economic value and effect, it is continually fraudulently forged or forged, and especially for commuter passes with a large population, In many cases, the validity period, section, name, age, etc. are falsified, and it is necessary for the issuer to take measures to prevent falsification. In addition, in the above other certificates, if it is an admission certificate, validity period, name, age, etc. If it is a meal ticket,
If it is a point card, such as the amount of money, the target product, etc., there is a possibility that the points, the validity period, etc., may be falsified.

In particular, the progress of color copiers in recent years has been remarkable, and it is easy to forge to the extent that complex patterns are provided by ordinary means, and it is difficult to make copies simply by making copies. In addition, there is a contrivance that characters such as "to be copied" and "to be invalid" appear.

[0004] The applicant has previously proposed a commuter pass in which a metallic glossy surface is formed on a part of the printing surface and a tint block printing layer and a printing layer are laminated in this order (Japanese Patent Application Laid-Open No. 9-234942).
The mechanism by which this prior art is useful for preventing tampering by unauthorized copying will be described with reference to FIG. FIG. 3 is a diagram showing the relationship between the light source, the light receiving angle of the color copying machine, and the original. The incident light L1 from the light source 11 is incident on the surface of the original 10 at an angle of 45 degrees. The light L2 reflected at the point where the light reaches the position 10 is captured by the light receiving section 12 located at an angle of 90 degrees with respect to the surface of the document 10, and gives image information to the photosensitive drum. Actually, when light is incident on general paper, it is scattered at all angles, so that the light receiving unit 12 located directly above in the figure can sufficiently capture the reflected light, and no image information is recorded on the paper. If not, the corresponding spot on the developed paper will remain white. In addition,
In this specification, the light reflectance is measured as 90 ° light reflectance = L2 / L1 × 100 using the light L1 incident at an angle of 45 ° as described above and the reflected light L2 captured at an angle of 90 °. It shall be.

[0005] In FIG. 3, the light receiving section 13 is shown for reference of understanding, and is placed at a position where incident light is specularly reflected, that is, reflected and arrives along a target line when viewed from the normal. Has been. Now, assuming that the surface of the document is a metallic glossy surface having a high reflectivity, the incident light L1 is specularly reflected, and almost all of the specularly reflected light L3 is directed to the light receiving unit 3. Does not reach the reflected light, and as a result, the developed paper turns black. The prior art utilizes this fact to form a tint block printing layer and printing layer on a metallic glossy surface, and the tint block and printing can be read by the naked eye, but when copied, the tint block and printing are in a black background caused by the presence of the metallic glossy surface. It is realized that it is buried in and becomes invisible.

According to this conventional technique, the above-mentioned effects can be obtained. However, the visibility of a tint block or a print on a metallic glossy surface cannot be said to be sufficient when the naked eye is judged in a short time. In particular, it is desired to further improve the visibility of a commuter pass such as a commuter pass that makes a determination in an instant. Separating the metallic glossy surface from the tint block and printing may have some anti-counterfeiting effect even if the metallic glossy surface is simply copied in black, but in this case the metallic glossy surface should be placed where it should be. Forgery is possible if you paste what you have, after all,
It is inevitable that a tint block and printing are performed on a metallic glossy surface.

[0007]

Therefore, in the present invention, it is assumed that a tint block and a print are provided on a metallic glossy surface without impairing the forgery prevention effect as described above.
It is an object of the present invention to provide a copy-forgery-inhibited pattern and a certificate, and in particular, a certificate and a certificate sheet with improved visibility of the print.

[0008]

According to the study of the inventor,
If a colored image receiving layer colored to a certain density is provided on the metallic glossy surface, the color when viewed with the naked eye and the color reproduced when color copying is greatly different, so that it is easy to distinguish the color copied. Have been found to be difficult to forge by copying, and the present invention has been achieved.

According to a first aspect of the present invention, at least a portion of the base sheet has a metallic gloss layer, and a colored image receiving layer made of a colored transparent resin is provided on the metallic gloss layer. It relates to a certificate sheet which is a feature.

A second aspect of the present invention relates to the certificate sheet according to the first aspect, which has a copy-forgery-inhibited pattern on the colored image receiving layer.

According to a third aspect of the present invention, at least a part of the base sheet has a metallic gloss layer, and the metallic gloss layer has a colored image receiving layer made of a colored transparent resin, and A certificate having a printing portion on the colored image receiving layer.

The invention according to claim 4 relates to the certificate according to claim 3, wherein the certificate has a copy-forgery-inhibited pattern on the colored image receiving layer and has a printing portion on the copy-forgery-inhibited pattern.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 are cross-sectional views for explaining a laminated structure when the present invention is applied to a commuter pass sheet and a commuter pass used for making commuter passes.
In the certificate sheet in this case, the magnetic recording layer 2 is laminated on the lower surface of the base material sheet 1, the vapor deposition anchor layer 3 is formed on the upper surface of the base material sheet 1, and the metal A colored image receiving layer 5 is sequentially laminated on a deposition anchor layer 3 including a layer 4 and a metallic luster layer 4. Alternatively, the certificate sheet may have a copy-forgery-inhibited pattern 6 (shown in FIG. 2) formed on the image receiving layer.

It is desirable that the base sheet 1 is resistant to tearing, has rigidity, and has an appropriate concealing property for printing, and is preferably made of paper, various plastic films or sheets, metal foil or sheets or plates. Can be used. As paper, paper or cardboard with a thickness of 150 μm or more, 200 μm
Various plastic films before and after, plastics are polypropylene, polycarbonate, polyester, polystyrene, etc., metals are iron,
Those mainly composed of metals such as copper, tin and aluminum are excellent.

The magnetic recording layer 2, as seen in an automatic ticket gate of a commuter pass, reads a recorded signal by contacting with a magnetic head, and the certificate is genuine or its use is valid. To determine the effect, whether the magnetic oxide is dispersed in the polymer matrix,
Alternatively, it is a thin film formed by vapor deposition or sputtering of a magnetic metal.

The deposition anchor layer 3 is used to increase the adhesion between the base sheet 1 and the metal thin film 4 when providing the upper metal thin film 4 and to adjust the smoothness of the surface of the base sheet. It is sufficient that the deposition anchor layer 3 exists at least below the metal thin film 4 described later.

Specifically, the deposition anchor layer 3 is formed by applying a coating composition containing a synthetic resin binder satisfying the above conditions as a main component and diluted with a solvent. Here, the synthetic resin used as a main component of the coating composition, for example,
A synthetic resin such as a polyester resin, a vinyl chloride resin, a vinyl chloride / vinyl acetate copolymer resin, or a polyurethane resin may be used alone or as a mixture, and various thermosetting resins and ionizing radiation-curable resins may also be used. The vapor deposition anchor layer is preferably provided to have a thickness of 1 to 5 μm, more preferably 1 to 2 μm.

The metallic luster layer 4 is provided on the vapor deposition anchor layer 3 by vapor deposition, sputtering or the like. Aluminum is easily used as the metal, but other metals such as gold, silver and copper, tin, chromium, nickel and the like may be deposited. The thickness of the metal thin film is preferably 300 to 1,000 °.

The colored image receiving layer 5 is for receiving an image for improving the printability and printability of the entire surface including the surface of the metallic gloss layer 4. Since the adhesion strength is low, increase the adhesion strength. The colored image receiving layer 5 is provided with a hue by the addition of a coloring agent, and is intended to obtain a black color different from the hue seen by the naked eye on a copy when color copying is performed. is there.

In order to realize the latter, in particular, that different colors can be obtained on a copy, the 90-degree light reflectance of the colored image receiving layer needs to be less than 30%. The reason for limiting the 90-degree light reflectance is as follows. When no or little colorant is added, light is reflected regularly on the metal thin film 4.
The light reflectance is very low, and even in color copying, the place where the metal thin film 4 and the image receiving layer 5 thereover are located is reproduced in black.
If the 90-degree light reflectance is less than 30%, the light is reproduced in colors from black to dark gray.

When the colorant is gradually added to the image receiving layer, the image receiving layer is gradually colored, and the colorant scatters light, so that the 90 ° light reflectance is gradually increased. When the 90-degree light reflectivity is 30% or more, when color copying is performed, the reproduced color is from black to dark gray, and furthermore,
It changes from dark gray to gray with the hue of the colorant,
It approaches the hue of the colorant.

The colored image receiving layer 5 can be formed by applying and forming a colored image receiving layer forming composition. Specific examples of the image receiving layer forming composition include polyester resins, vinyl chloride resins, and chloride resins as synthetic resins. A synthetic resin such as a vinyl / vinyl acetate copolymer resin or a polyurethane resin is used alone or as a mixture, a coloring agent or the like is added, the mixture is diluted with a solvent to an appropriate viscosity, and the mixture is coated and dried.

A dye or a pigment can be used as a coloring agent for forming the colored image receiving layer 5, but a pigment is used in order to realize 90-degree light scattering and from the viewpoint of durability and light resistance. Is preferred. As a pigment, any pigment generally used in paints can be used in principle. The thickness of the colored image receiving layer 5 is preferably from 1 to 10 μm.

The copy-forgery-inhibited pattern 6 may be applied to the entirety of the certificate sheet. However, in the present invention, a tampering prevention effect is particularly provided when it is provided on the surface of the colored image receiving layer 5 on the metallic gloss layer 4. . As the copy-forgery-inhibited pattern 6, a pattern composed of fine lines, a symbol such as a company emblem, and a character such as a company name are formed on one surface by printing. The copy-forgery-inhibited pattern 6 may be formed by providing a plurality of different patterns. Although the tint block 6 can be omitted, falsification can be prevented in relation to the metallic glossy layer 4 and the print 7,
It is more effective to provide the copy-forgery-inhibited pattern 6 and add an element to prevent tampering.

The hue of the tint block 6 can be arbitrarily determined. For example, assuming that the hue of the tint block 6 is a hue that is complementary to the hue of the colored image receiving layer 5, the color of the tint block becomes blackish due to the influence of the lower layer by color copying.

Up to this point, the certificate sheet of the present invention has been described.

A printing unit 7 is provided on the colored image receiving layer or on the tint block 6 on the colored image receiving layer. The printing unit 7 outputs information such as the validity period, the boarding section, the name, the age, and the like from the computer terminal for use as the certification items of the certificate, and in the case of a commuter pass.

Although the present invention basically has the above configuration, there may be some variations. In the example above,
Although the magnetic recording layer 2 is provided under the base sheet 1, it may have an optical recording unit and / or an IC recording unit separately or in place of the magnetic recording layer 2. In addition, the present invention can be applied not only to commuter passes but also to various uses such as an admission ticket, a dining ticket for a cafeteria, a passport card, a score card, and the like, and can be formed using a material suitable for each use.

[0029]

EXAMPLES Samples were prepared by omitting the lower magnetic recording layer from the structure shown in FIG. 1 under the conditions shown in Examples 1 to 4 and Comparative Example. The preparation conditions are shown in Table 1. Individual information was printed on the obtained sample by a thermal transfer printer and evaluated. The hue of the metallic gloss layer of the obtained sample, the hue of the tint block in the part without the metallic luster layer, the hue of the part corresponding to the metallic luster layer in the copy obtained by copying, and the hue of the part corresponding to the tint block And each is summarized in Table 2. For the samples of Examples 1 to 4 and the comparative example, copy-forgery-inhibited pattern printing and printing were performed under the same conditions, and a color copying machine (manufactured by Canon, PI
XEL DioS).

As can be seen from Table 2, the metallic gloss layer can be seen by the naked eye through the colored image receiving layer, but it becomes black when color-copied. In addition, when the copy-forgery-inhibited pattern is overlapped, the background of the copy-forgery-inhibited pattern is blackened by color copying, so that it can be determined at a glance.

[0031]

[Table 1]

[0032]

[Table 2]

[0033]

According to the first and second aspects of the present invention, the tint block printing is performed as required, and when printing is performed, the colored image receiving layer is copied from black to dark gray by copying. Since the printed material becomes black, it can be clearly seen that the printed material has been copied, so that a certificate sheet that can prevent forgery by copying can be provided. In addition, if the upper layer has only a metallic luster layer with nothing, it is possible to forge by pasting an aluminum foil or the like, or it is difficult to forge a substance having both elements of coloring and metallic luster.

According to the third and fourth aspects of the present invention, a copy-forgery-inhibited pattern is formed as required, and a certificate having a printed portion is copied by copying the colored image receiving layer portion from black to dark gray. The certificate thus obtained can be prevented from being forged by copying.
In addition, if the upper layer has only a metallic luster layer with nothing, it is possible to forge by pasting an aluminum foil or the like, or it is difficult to forge a substance having both elements of coloring and metallic luster.

[Brief description of the drawings]

FIG. 1 is a sectional view of a certificate sheet of the present invention.

FIG. 2 is a cross-sectional view of the certificate of the present invention.

FIG. 3 is a diagram illustrating a relationship between light reflection and copying.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base sheet 2 Magnetic recording layer 3 Deposition anchor layer 4 Metal thin film 5 Colored image receiving layer 6 Ground pattern 7 Printing part 10 Document 11 Light source 12, 13 Light receiving part L1 Incident light L2 90 degree reflected light L3 Regular reflected light

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C005 HA04 HB07 HB13 JA11 JA26 JB19 KA15 KA48 LA14 LB18 2H113 AA06 BB02 BB08 BB12 BB17 BB22 CA39 CA40 DA04 DA15 DA47 DA48 DA49 DA53 DA57 DA62 EA07 FA09

Claims (4)

[Claims] 1. A certificate comprising a metallic gloss layer on at least a part of a substrate sheet, and a colored image receiving layer made of a colored transparent resin on the metallic gloss layer. Sheet. 2. The certificate sheet according to claim 1, further comprising a tint block on the colored image receiving layer. 3. A base material sheet having a metallic gloss layer on at least a part thereof, a colored image receiving layer made of a colored transparent resin on the metallic gloss layer, and the colored image receiving layer A certificate characterized by having a printing section on the top. 4. A tint block on the colored image receiving layer,
The certificate according to claim 3, further comprising a printing portion on the copy-forgery-inhibited pattern.