JP2001353952A - Anti-counterfeit print media and printed matter - Google Patents

Abstract

(57) [Summary] [PROBLEMS] Even relatively inexpensive cash vouchers, such as regular tickets, which are frequently used and disposable, can be easily identified with the naked eye as being counterfeit. To provide a forgery-preventive print medium and a forgery-preventive printed material that are difficult to prevent forgery without cost problems. SOLUTION: Forgery characterized in that a transparent or translucent pearl print layer is provided on at least a part of a base material, a light color print layer printed on the base material, and the light color print layer. Printed matter in which arbitrary information is formed on the surface of the pearl print layer of the print medium having the protective property.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forgery-preventive print medium and a printed matter, and more particularly to a forgery-preventive print medium and a printed matter which can be easily discriminated by the naked eye when forged by a color copying machine or the like. .

[0002]

2. Description of the Related Art Vouchers such as regular tickets, credit cards, cash cards, prepaid cards, ID cards, gift certificates, admission tickets, tickets, etc. of various types of transportation are provided in various colors to improve their design. Printed. On the other hand, as the functions of color copiers have been improved, counterfeiting of cash vouchers as described above has become easier. A number of methods have been proposed for preventing counterfeiting of such cash vouchers, such as a method of attaching a transparent or reflective hologram or the like, which cannot easily form the same design, and a method of providing a pearl print layer.

[0003]

However, in the above-described conventional forgery prevention method, although various measures have been taken, for example, gold tickets that are used and disposable very frequently, such as regular tickets, are: The use of the hologram or the like has a cost problem.On the other hand, in the method of providing the pearl print layer, although the glossiness of the printed matter is lost by copying, the overall color tone is reproduced as a color close to the actual one, They cannot be easily identified with the naked eye and are often overlooked.

Accordingly, an object of the present invention is to make it possible to easily determine with a naked eye that even relatively inexpensive cash vouchers, such as regular tickets, which are frequently used and disposable, are counterfeit. In addition, it is an object of the present invention to provide a forgery-preventive print medium and a forgery-preventive printed material, which are difficult to prevent forgery without cost problems.

[0005]

The above object is achieved by the present invention described below. That is, the present invention is characterized in that a base material, a light-colored print layer printed on the base material, and at least a part of the light-colored print layer, a transparent or translucent pearl print layer is provided. The present invention provides a forgery-preventing print medium, and a printed matter in which arbitrary information is formed on a surface of a pearl print layer of the medium.

[0006]

Next, the present invention will be described in more detail with reference to preferred embodiments. FIG. 1 is a cross-sectional view illustrating a forgery-preventive print medium A of the present invention. As schematically shown in FIG. 1, the anti-counterfeit printing medium A of the present invention comprises a base material 1, a light-colored printing layer 2 printed on the base material 1, and at least a part of the light-colored printing layer 2. Is provided with a transparent or translucent pearl print layer 3.

With the above configuration, when the anti-counterfeiting printing medium A is copied using a color copying machine, the detailed reason is unknown, but the copied article loses the gloss based on the pearl printing layer. In addition, a hue completely different from the hue of the document appears. For example, when the light color print layer 2 is light gray, a clear blue color appears in the copy. This phenomenon is considered to be caused by the fact that the reflection wavelength is modulated by the pearl pigment in the pearl print layer to a different wavelength region in a copying machine, unlike in the case of visual observation.

The substrate 1 in the anti-counterfeiting printing medium A of the present invention is the same as the substrate used for various conventional cards and cash vouchers, for example, high quality paper, OCR paper, carbonless paper. , Paper such as art paper, vinyl chloride resin, PE
A plastic film or sheet such as polyester such as T, polypropylene, cellophane, cellulose acetate, polycarbonate, and acrylic resin is preferably used. The thickness of the substrate 1 may be a thickness that can appropriately maintain the overall rigidity. For example, in the case of PET (polyethylene terephthalate), the thickness is about 0.19 to 0.26 mm. The size is not particularly limited, and may be the same size as the original card or the like. If the card is cut into a card size later, the size may be a multiple of the card size.
Of course, although not shown, various information and pictures may be printed on the back surface of the base material 1 (the base material surface opposite to the light-colored print layer 2).

The light printed layer 2 provided on one side of the base material 1 is characterized in that if the printed layer is dark, various information and pictures formed on the pearl printed layer 3 are difficult to see. When the anti-counterfeiting print medium A is copied, it is copied in the same or similar hue as that of the dark color, so that it needs to be a light color. The hue of the light-colored printing layer 2 is not particularly limited, and may be any hue. However, similarly to the above, the hue of various information and a chromatic pattern formed on the pearl printing layer 3 is changed to white. Preferably, the color is close to the hue, that is, light gray. The gray density is normal white PE
When the reflectance of T is 100%, the reflectance is 75 to 90%.
The degree is preferred. The light-color printing layer 2 is preferably provided by solid printing, but is not limited to the solid printing layer, and may be a halftone dot, a printing layer with gradation, or a similar light-colored background pattern.

In the present invention, the pearl print layer 3 is provided on the entire surface or a part of the light color print layer 2. The pearl print layer 3 is made of, for example, a vinyl chloride-vinyl acetate copolymer (EV
A) A pearl ink in which a pearl pigment, for example, a pearl pigment in which a layer of high refractive index silicon oxide, titanium oxide, iron oxide or the like and a layer of low refractive index mica or the like are laminated in a transparent ink vehicle such as A). It is formed using. Further, as the pearl ink, those appropriately containing additives can be used. Examples of the additive include a defoaming agent for preventing application and removal due to bubbling of the ink, and a curing agent for curing the ink to prevent peeling and scratching. As the antifoaming agent, an acrylic type is preferable, and as the curing agent, an isocyanate type is preferable. Specific examples of the pearl pigment include a brand name manufactured by Shiseido; Infinite Color and a brand name manufactured by Merck (Germany); and a pearl pigment such as Iliodin. The pearl print layer 3 can be formed by gravure printing, screen printing, or various coating methods.

The pearl print layer 3 is made transparent or translucent by adjusting the concentration of the pearl pigment and the thickness of the pearl print layer 3, and passes through the pearl print layer 3 to form a light-color print layer 2 below.
Is recognized by the naked eye or a copier. By doing so, when the forgery-preventive printing medium A of the present invention is copied by a color copying machine, the light source light of the copying machine passes through the pearl printing layer 3, is reflected by the light printing layer 2, and is reflected by the light-colored printing layer 2. When the light passes through the pearl printing layer 3 again,
The wavelength of the transmitted light is modulated. When the anti-counterfeiting printing medium A of the present invention thus formed is copied by a color copying machine, the light gray color of the anti-counterfeiting printing medium A is copied to blue, and it can be immediately visually discriminated that it is a counterfeit. .

FIG. 2 is a diagram schematically showing another embodiment of the present invention. In the embodiment shown in FIG.
Shows an example in which a strip-like dark black (not limited to black) print layer is added to a part of the print layer. In this embodiment, when the dark black printed portion is observed with the naked eye via the pearl print layer 3, it is observed as a blackish gold color. Will be copied to just black instead of gold.

FIG. 3 is a view schematically showing another embodiment of the present invention. In the embodiment shown in FIG.
A tint block 5 is formed on the surface. At this time, the tint block 5 may have any hue, but it is preferable that the tint block 5 does not completely cover the light-colored print layer 2 thereunder. The tint block 5
Is formed of black ink and the copy-forgery-inhibited pattern 5 obscures about 30% of the surface of the light-colored print layer 2, when the forgery-preventive print medium A is copied by a color copying machine, the copy has a blue background. As a result, the copy-forgery-inhibited pattern 5 is copied, and it can be easily determined that the copy is a forgery.

FIG. 4 is a diagram schematically illustrating the printed matter of the present invention. For example, in the case of a railway ticket, a ride is taken on the surface of the pearl print layer 3 of the forgery-preventive print medium A shown in FIG. The first station name, the last station name, the expiration date, the picture, and other various information are printed and formed. When such a regular ticket is copied by a color copier, the above-described various information and pictures are copied as they are, but the background of such information is copied in blue. Therefore, the counterfeit is immediately recognized by the naked eye. Each layer in the above is "print layer"
Although described as, these printing layers are not only meant to be formed by various printing methods such as gravure printing, offset printing, screen printing, relief printing, etc., layers formed by various coating methods The meaning is also included.

[0015]

Now, the present invention will be described in further detail with reference to Examples and Comparative Examples.
This will be specifically described. Example 1 On the surface of a white PET sheet of A4 size having a thickness of 0.19 mm
Solid printing of light gray ink with the following composition by gravure printing
Printing, light-colored print layer (solid content applied amount 0.1 g / m ^Two)
I did.Light gray ink composition : Product name of The Inktec Co., Ltd.
CLIOS 991 black (polyurethane, vinyl chloride resin
And cellulose resin solution with carbon black and silver
Incorporation of pigments consisting of Rica and organic bentonite
G) The white light reflectance of the light gray print layer is higher than that of white PET.
When the emissivity was 100%, it was 90%. Next
Gravure printing of pearl ink with the following composition on the surface of the printed layer
Solid printing by the printing method, pearl printing layer (solid content coating amount 6
g / m^Two) To obtain the anti-counterfeit print medium of the present invention.
Was.Pearl ink composition : Product name of The Inktec Co., Ltd.
100 parts by weight of HW Gold Pearl Ink
Nate L) Ink with 2 parts by weight)

The surface of the pearl print layer of the anti-counterfeiting printing medium thus obtained was light gray and excellent in gloss. On the surface of the pearl print layer of the print medium, common information as a regular ticket and a full-color pattern for decoration are formed by offset printing, and then the base material is cut into a regular ticket size, and one of the sheets is heated. Individual information such as the name of the boarding station, the name of the disembarking station, and the expiration date were printed using the fusion transfer sheet to obtain a printed material (sample) of the present invention.

Comparative Example 1 A regular ticket (sample) of a comparative example was prepared in the same manner as in Example 1 except that the light-colored print layer was not formed in Example 1 described above. The image forming surface of the regular tickets of the above Examples and Comparative Examples was copied with a full-color copying machine (trade name: Pixel DIO.S Color Leather Copy 700, manufactured by Canon Inc.). The surface gloss was lost, and the area where various information was not printed was colored blue. On the other hand, in the case of the comparative example, although the gloss of the surface was lost, the others were accurately copied to such an extent that the naked eyes could hardly distinguish them from the original.

[0018]

According to the present invention as described above, even relatively inexpensive cash vouchers, such as regular tickets, which are frequently used and disposable, can be easily detected by the naked eye. The present invention provides a forgery-preventive print medium and a forgery-preventive printed matter, which are difficult to prevent forgery and have no cost problem.

[Brief description of the drawings]

FIG. 1 is a diagram schematically illustrating a cross-sectional view of a forgery-preventive print medium of the present invention.

FIG. 2 is a diagram schematically illustrating a cross-sectional view of a forgery prevention print medium according to another embodiment of the present invention.

FIG. 3 is a diagram schematically illustrating a cross-sectional view of a forgery prevention printing medium according to another embodiment of the present invention.

FIG. 4 is a diagram schematically illustrating a cross-sectional view of a printed material of the present invention.

[Explanation of symbols]

 1: base material 2: light color print layer 3: pearl print layer 4: dark color print layer 5: ground pattern 6: printing information

Claims (6)

[Claims] 1. A base material, a light-colored print layer printed on the base material, and a transparent or translucent pearl print layer provided on at least a part of the light-colored print layer. Anti-counterfeit printing media. 2. The print medium according to claim 1, wherein the light-colored print layer is light gray. 3. The print medium according to claim 1, wherein a part of the light color print layer includes a dark color print layer. 4. Between the pearl print layer and the light color print layer,
The print medium according to claim 1, wherein an arbitrary pattern observed by the naked eye or a copying machine is formed through the pearl print layer. 5. A printed matter, wherein arbitrary information is formed on the surface of the pearl print layer according to claim 1. Description: 6. The printed matter according to claim 5, which is a regular ticket for transportation.