JP2001013860A - Image recording body, transfer foil of optical conversion element and formation of image recording body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an image recording body have excellent forgery and falsification preventing function, excellent in surface protection, and satisfactory in surface friction durability, and to make the image recording body extremely difficult in forgery and falsification and moreover, excellent in designing and discriminating ability. SOLUTION: This image recording body is provided with an information carrying layer 52 which carrier at least one selected from the discrimination information and the bibliography information, an optical conversion element layer 430 and a protective layer, on a supporting body 5. Therein, the frequency and/or the depth of the marking of the optical conversion element layer 430 is continuous at least at the joint of the period of the marking pattern and, further, the reflective wavelength in the case of visualizing the marking of the optical conversion element layer 430 from a specific angle is continuous at the joint of the period of the marking pattern. In the optical conversion element layer 430, the optical conversion effect on the region centering a face picture of the picture region is smaller than the optical conversion effect on the region other than the same. Therein, the image recording body has a ruggedness or a layer different in light transmittance on all the surface of either layer on the picture recording body side or the surface side, or in the part corresponding to the joint of the period of the marking pattern of the optical conversion element layer 430, or as if a tally impression partly covering at least the picture region and the bibliography information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a contact-type or non-contact type electronic or magnetic card or sheet for storing personal information or the like for which security (security) such as forgery and alteration prevention is required. The present invention relates to an image recording medium, an optical change element transfer foil, and a method for forming an image recording medium, which are preferable.

[0002]

2. Description of the Related Art In recent years, in the service industries such as banks, companies, schools and government offices, contact or non-contact cards such as electronic or magnetic cards have been frequently issued. Cash cards, employee cards, employee cards, membership cards, student cards, alien registration cards, and various licenses used in these fields are recorded with personal information and cannot be easily forged or altered. Has been security-treated.

For example, a hologram layer is provided on a card substrate, and a special image is formed so that a face photograph, a name, an issue date, and the like are not easily imitated. This image is formed as a diffraction grating image or an image generally called a hologram image, and this hologram image is formed by interference fringes obtained by superimposing a reference wave with a wave reflected from or transmitted through an object. is there. Some hologram images reproduce the image of the object three-dimensionally. The hologram layer is covered with a sheet-like protective sheet having good light transmittance. The protective sheet is made of a transparent resin such as a laminate, and is protected so as to cover the hologram layer which is weaker than the card substrate.

[0004]

However, according to the conventional method of manufacturing a card, for example, a laminate film and a hologram sheet are separately formed, and after a lamination coating step, an excess laminate film is cut. However, in particular, employee IDs and licenses with face photographs are required to have excellent anti-counterfeiting and falsification prevention functions, and further have excellent surface protection, good surface friction durability, and good design, There is a demand for excellent discrimination.

Therefore, the present invention has solved the above-mentioned problems and has an excellent function of preventing forgery and falsification, has excellent surface protection properties, has good surface friction durability, and is extremely difficult to forge and falsify. It is an object of the present invention to provide an image recording medium, an optically variable element transfer foil, and a method for forming an image recording medium, which have excellent design and discrimination.

[0006]

Means for Solving the Problems In order to solve the above problems and achieve the object, the present invention has the following constitution.

According to the first aspect of the present invention, there is provided a device comprising:
In an image recording body having at least one selected from identification information and bibliographic information, an optical variable element layer, and a protective layer, the frequency and / or depth of the engraving of the optical variable element layer is at least An image recording medium characterized by being continuous at a joint of a period of an engraving pattern. ].

[0008] The invention described in claim 2 is that "on the support,
In an image recording medium having an information carrying layer carrying at least one selected from identification information and bibliographic information, an optical change element layer, and a protective layer, reflection when viewed from a specific angle of the mark of the optical change element layer An image recording medium, wherein the wavelength is continuous at a joint of the periods of the engraving pattern. ].

[0009] The invention described in claim 3 is that "on the support,
In an image recording body having an image area having gradation and an information carrying layer carrying bibliographic information, an optical variable element layer, and a protective layer, the optical variable element layer is located on an area around a face image of the image area. An image recording medium "characterized in that the optical conversion effect is smaller than the optical conversion effect in the other area.

[0010] The invention described in claim 4 is that "on the support,
In an image recording body having an image area having gradation and an information carrying layer carrying bibliographic information, an optical variable element layer, and a protective layer, the entire surface of the image recording body side or the surface side, or the optical conversion element layer An image recording body having a layer having different concavities and convexities or light transmittance in a portion corresponding to a joint of a period of an engraving pattern, or in a marking shape in which at least a part of an image area and bibliographic information is applied. ].

[0011] The invention described in claim 5 is that "on the support,
In an image recording body having an information carrying layer carrying identification information and bibliographic information, an optical variable element layer, and a protective layer, the ratio of the refractive index between the optical variable element layer and the protective layer is 0.8 or more and 1.2 or less. An image recording medium characterized by the following. ].

[0012] The invention as set forth in claim 6 is that "on the support,
In an image recording body having an information carrying layer for carrying identification information and bibliographic information, an optical variable element layer, and a protective layer, the ratio of the linear thermal expansion coefficient between the optical variable element layer and the protective layer is 0.5.
An image recording medium having a ratio of 2.0 to 2.0. 』
It is.

According to a seventh aspect of the present invention, there is provided the image according to any one of the first to eighth aspects, wherein the protective layer is a cured transparent protective layer cured by actinic light. Record body. ].

[0014] The invention according to claim 8 is an image recording apparatus according to any one of claims 1 to 8, wherein the optical change element layer is a hologram, a diffraction grating, and a relief body having irregularities. body. ].

According to a ninth aspect of the present invention, there is provided a display device comprising:
A transfer foil provided with at least an optical change element layer and an adhesive layer, wherein the transfer foil is in the form of a roll, and the frequency and / or depth of engraving of the optical element change layer is continuous at the joint of the period of the engraved pattern in the longitudinal direction. An optical change element transfer foil, characterized in that: ].

According to a tenth aspect of the present invention, there is provided a transfer foil provided with at least an optical change element layer and an adhesive layer on a support. An optical change element transfer foil, wherein a reflection wavelength when viewed from a specific angle is continuous at a joint of the periods of the engraved pattern. ].

An eleventh aspect of the present invention provides a transfer foil having at least an optical change element layer and an adhesive layer provided on a support, wherein the transfer foil has a roll shape and at least a portion in the width direction has at least an optical conversion layer. An optical change element transfer foil, wherein the effect is smaller than the optical conversion effect on the other area, and a portion where the optical conversion effect is small overlaps the image area after transfer. ].

According to a twelfth aspect of the present invention, there is provided an optical device according to any one of the ninth to eleventh aspects, wherein the protective layer is a cured transparent protective layer cured by actinic light. Change element transfer foil. ].

According to a thirteenth aspect of the present invention, there is provided the method according to the first aspect, wherein a release layer and a protective layer are provided in this order between the support and the optical variable element layer, and the protective layer is cured by actinic light. An optical change element transfer foil according to any one of claims 9 to 11. ].

According to a fourteenth aspect of the present invention, there is provided the optical change element layer according to any one of the ninth to thirteenth aspects, wherein the optical change element layer is a hologram, a diffraction grating, or a relief body having irregularities. Element transfer foil. ].

According to a fifteenth aspect of the present invention, there is provided an information carrying layer provided on a support and carrying at least one selected from identification information and bibliographic information. An image recording medium producing method, comprising: providing an optical variable element layer having a depth that is continuous at least at a seam of a period of an engraved pattern; and providing a protective layer on the optical variable element layer. ].

According to a sixteenth aspect of the present invention, an information carrying layer for carrying at least one selected from identification information and bibliographic information is provided on a support, and a specific angle of a stamp is formed on the information carrying layer. An image recording medium producing method, comprising: providing an optical change element layer whose reflection wavelength when viewed is continuous at a joint of a period of an engraved pattern; and further providing a protective layer on the optical change element layer. ].

[0023] The invention according to claim 17 is that an information carrying layer carrying at least one selected from identification information and bibliographic information is provided on a support, and a specific angle of a stamp is formed on the information carrying layer. An image recording medium producing method, comprising: providing an optical change element layer whose reflection wavelength when viewed is continuous at a joint of a period of an engraved pattern; and further providing a protective layer on the optical change element layer. ].

[0024] The invention according to claim 18 is that an information carrying layer for carrying at least one selected from identification information and bibliographic information is provided on a support, and a roll is formed on the information carrying layer in the width direction. A portion of the optical conversion effect is at least smaller than the optical conversion effect on the other region, and a portion where the optical conversion effect is small is provided with an optical change element layer overlapping the post-transfer image area. A method for producing an image recording medium, comprising: providing a protective layer on a recording medium. 』
It is.

[0025] The invention according to claim 19 is the image according to any one of claims 15 to 18, wherein the protective layer is a cured transparent protective layer cured by actinic light. How to create a recording. ].

According to a twentieth aspect of the present invention, there is provided a method as set forth in any one of the fifteenth to eighteenth aspects, wherein the optically variable element layer is a hologram, a diffraction grating, or a relief body having irregularities.
Item. ].

According to the first to fifth, seventh, and twentieth aspects of the present invention, it has an excellent function of preventing forgery and falsification, has excellent surface protection, and has good surface friction durability. It is extremely difficult to forge and falsify, and is excellent in design and discrimination.

According to the sixth aspect of the present invention, it has an excellent forgery and alteration prevention function and has heat durability.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an image recording medium and an image recording medium forming method according to the present invention will be described with reference to the drawings, but the present invention is limited to the description of the embodiments and the drawings. is not. First, FIGS. 1 and 2 show an image recording medium producing apparatus according to a first embodiment, FIG. 1 is a schematic configuration diagram of the image recording medium producing apparatus, and FIG. 2 is a diagram showing a layer configuration of the image recording medium. .

In the image recording medium producing apparatus 1 of this embodiment, the card material supply unit 10 and the information recording unit 20
Are arranged, and the security imparting section 40 is arranged at a lower position to create a card as an image recording body. However, a sheet can also be created.

In the card material supply section 10, a plurality of card materials 50 which have been cut in a sheet shape in advance for writing personal information of the card user are stocked with the face for recording a face photograph facing upward. I have. In this example, the card material 50 is composed of a support 51 and an information carrying layer 52.
Are automatically supplied one by one from the card material supply unit 10 at a predetermined timing.

In the information recording section 20, a yellow ribbon cassette 21, a magenta ribbon cassette 22, a cyan ribbon cassette 23, and a black ribbon cassette 24 are arranged, and recording heads 25 to 28 are arranged corresponding to them. In the thermal transfer using a thermal transfer sheet such as a yellow ribbon, a magenta ribbon, a cyan ribbon, or the like, while the card material 50 is being moved, a predetermined area of the information carrying layer 52 has identification information 53 having a gradation such as a photograph of the face of the card user. Is recorded. Further, a character ribbon cassette 31 and a recording head 32 are arranged, and bibliographic information 54 such as a name and a card issue date is obtained by thermal transfer using a thermal transfer sheet such as a character ribbon.
Is recorded, and an image recording layer is formed.

A transfer foil cassette 41 is arranged in the security applying section 40, and a thermal transfer head 42 is arranged corresponding to the transfer foil cassette 41. The optical change element transfer foil 43 is set in the transfer foil cassette 41, and the optical change element transfer foil 43 is transferred to provide an optical change element transfer layer 430.

When providing the optical change element transfer layer 430, the transparent protective layer 64a2 in FIG. 12D is preferably a cured transparent protective layer.

Next, FIGS. 3 and 4 show an image recording medium producing apparatus according to a second embodiment, FIG. 3 is a schematic configuration diagram of the image recording medium producing apparatus, and FIG. FIG.

In the image recording medium producing apparatus 1 of this embodiment, the card material supply section 10, the information recording section 20, and the security provision section 40 have the same configuration. A card 60 is formed as an image recording medium, and a sheet can also be formed.

In the protection applying section 60, the transfer foil cassette 61
Are arranged, and a thermal transfer head 62 is arranged corresponding to the transfer foil cassette 61. The cured transparent protective transfer foil 63 is thermally transferred to the transfer foil cassette 61, and a protective layer of the cured transparent protective transfer layer 630 is provided on the optical change element transfer layer 430.

Next, FIGS. 5 and 6 show an image recording medium producing apparatus according to a third embodiment. FIG. 5 is a schematic configuration diagram of the image recording medium producing apparatus, and FIG. FIG.

In the image recording medium producing apparatus 1 of this embodiment, the card material supply section 10 and the information recording section 20 are configured in the same manner, but a protection providing section 60 is arranged next to the information recording section 20. A security providing unit 40 is provided.

In the protection applying section 60, a protective layer of the cured transparent protective transfer layer 630 is provided by thermally transferring the cured transparent protective transfer foil 63 onto the information carrying layer 52. Security granting unit 4
0, the cured optically variable element transfer foil 44 is transferred onto the cured transparent protective transfer layer 630, and the cured optically variable element transfer layer 440 is transferred.
Is provided.

Next, FIGS. 7 and 8 show an image recording medium producing apparatus according to a fourth embodiment, FIG. 7 is a schematic configuration diagram of the image recording medium producing apparatus, and FIG. FIG.

In the image recording medium producing apparatus 1 of this embodiment, the card material supply section 10 and the information recording section 20 have the same configuration, but the information recording section 20 is followed by a protection providing section 60. A security providing unit 40 is provided.

In the protection applying section 60, the transparent protective transfer foil 64 is thermally transferred onto the information carrying layer 52 to perform the transparent protective transfer layer 640.
Is provided. In the security providing unit 40,
Cured optical change element transfer foil 44 on transparent protective transfer layer 640
Is transferred and a cured optical change element transfer layer 440 is provided.

Next, FIGS. 9 and 10 show an image recording medium producing apparatus according to a fifth embodiment. FIG. 9 is a schematic configuration diagram of the image recording medium producing apparatus, and FIG. FIG.

In the image recording medium producing apparatus 1 of this embodiment, the security providing section 40 and the protection providing section 80 are arranged in this order. In the security providing section 40, the optically variable element transfer foil 43 is converted into identification information 53 having gradation such as a photograph of the face of the card user recorded on the information carrying layer 52 and bibliographic information 54 such as the name and the date of card issuance. An optically variable element transfer layer 430 is provided which is superimposed and transferred. A protection applying unit 80 is disposed, and the protection applying unit 80 includes a UV liquid application device 81 and a UV lamp 82, applies a UV liquid on the optical change element transfer layer 430, and irradiates with a UV ray to cure the UV light. A curing protection layer 83 made of a UV curing resin layer is provided.

Next, an embodiment of the optical change element transfer foil 43 is shown in FIG. 11A includes an optical change element transfer layer 430 and a support 43b. The optical change element transfer layer 430 includes a release layer 43a1,
It is composed of an optical change element image layer 43a2 and an adhesive layer 43a3, and a release layer 43a is provided on both sides of the optical change element layer 43a2.
1. An adhesive layer 43a3 is provided, and a release layer 43a1 is adhered to the support 43b. 11B is configured similarly to the transfer foil of FIG. 11A, except that an intermediate layer 43a4 is provided between the adhesive layer 43a3 and the optical change element layer 43a2. I have. 11C is configured similarly to the transfer foil of FIG. 11B, except that the optical change element layer 43a2 and the intermediate layer 43 are different from each other.
A barrier layer 43a5 is provided between the barrier layer 43a5 and the barrier layer 43a5. The transfer foil of FIG. 11D is configured in the same manner as the transfer foil of FIG. 11C, but includes a release layer 43a1 and an optical change element layer 43a2.
And a transparent protective layer 43a6 is provided.

These optical change element transfer foils 43 are transferred by peeling the optical change element transfer layer 43a from the support 43b.

An embodiment of the transparent protective transfer foil 64 is shown in FIG.
Shown in The transparent protective transfer foil 64 shown in FIG. 12A is composed of a transparent protective transfer layer 640 and a support 64b. The transparent protective transfer layer 640 is composed of a release layer 64a1, a transparent protective layer 64a2, and an adhesive layer 64a3. A release layer 64a1 and an adhesive layer 64a3 are provided on both sides of 64a2, and the release layer 64a1 is adhered to the support 64b. FIG.
The transparent protective transfer foil 64 shown in FIG. 12B is configured similarly to the transfer foil shown in FIG. 12A, except that the transparent protective layer 64a2 and the adhesive layer 64 are formed.
An intermediate layer 64a4 is provided between the intermediate layer 64a4 and a3. FIG.
The transparent protective transfer foil 64 of (c) is configured in the same manner as the transfer foil of FIG. 12B, but is provided with two transparent protective layers 64a2. The transparent protective transfer foil 64 of FIG.
Although it is configured similarly to the transfer foil of (b), the transparent protective layer 64
A barrier layer 64a5 is provided between a2 and the intermediate layer 64a4.

In these transparent protective transfer foils, the transparent protective transfer layer is peeled off from the support and transferred.
At least, the support has a configuration in which a release layer, a transparent protective layer, and an adhesive layer are laminated in this order, or at least, the support has a configuration in which a release layer, a transparent protective layer, an intermediate layer, and an adhesive layer are laminated in this order. Yes, or at least, a structure in which a release layer, a transparent protective layer, a barrier layer, an intermediate layer, and an adhesive layer are laminated on a support in this order, and are excellent in surface protection and surface wear durability.

The optically variable element transfer foil has a structure in which at least a release layer, an optically variable element layer, and an adhesive layer are sequentially laminated on a support, or at least, a release layer, an optically variable element, Layer, an intermediate layer, a configuration in which the adhesive layer is laminated in this order, at least on the support, a release layer,
It has a configuration in which an optical change element layer, a barrier layer, an intermediate layer, and an adhesive layer are laminated in this order, and has excellent surface protection properties and surface wear durability.

Further, the transparent protective transfer foil and the optical change element transfer foil have a transparent protective layer between the release layer and the optical change element layer, and the transparent protective layer may be a cured transparent protective layer. .

It is preferable that at least the transparent protective layer located closer to the surface of the image recording medium than the optical change element layer is a UV-curable layer or an electron-beam-curable layer because of its excellent surface protection and surface wear durability.

Further, it is more preferable that the optical change element layer is a hologram, a diffraction grating, or a relief structure having irregularities, which has an effect of preventing forgery and falsification. Also, at least one transparent protective layer is heat-transferred over the entire surface of the card, so that the surface protective property is obtained.
Excellent in surface abrasion durability and preferred.

Further, it is preferable that an antistatic agent is contained in either the transparent protective transfer foil or the optical change element transfer foil, so that a card or a sheet to which dust does not adhere can be prepared.

Further, it is preferable that the transfer surface previously transferred is subjected to an easy-adhesion processing of the transfer foil to be transferred later, because the adhesiveness is good.

In the transfer foil of the present invention, it is preferable to provide at least one of an antistatic layer, a release layer, a transparent protective layer, an optical change element image layer, a barrier layer, an intermediate layer, and an adhesive layer. The antistatic layer of the transfer foil contains an anionic polymer substance and / or conductive particles having excellent antistatic properties.

Examples of the anionic polymer include polymers containing a carboxyl group, a sulfonic acid group, and a hydroxyl group, such as polyacrylic acid, polymethacrylic acid, and the like.
Examples include vinyl chloride, mono (2.ethylhexyl) maleate copolymer, polystyrene sulfonate, polyvinyl alcohol, cellulose, hydroxymethylcellulose, and modified products thereof. Part or all of the corresponding functional groups are alkali metal salts. , Alkaline earth metal salts, transition metal salts and the like. Among them, polyacrylic acid, polymethacrylic acid, alkali or alkaline earth metal salts of polystyrene sulfonic acid are preferable, and particularly, the sodium salt of polystyrene sulfonic acid is compatible with other resins described below, antistatic performance, solubility and solution. It is preferable from the viewpoint of the viscosity when the above is set.

As the conductive particles, various metals, Z
nO, TiO ₂ , SnO ₂ , Al ₂ O ₃ , In ₂ O ₃ ,
MgO, CoO, CuO, Cu ₂ O, SrO, BaO,
BaO ₂ , PbO, PbO ₂ , MnO ₃ , SiO ₂ , Z
rO ₂ , Ag ₂ O, Y ₂ O ₃ , BiO ₃ , La ₂ O ₃ ,
Ti ₂ O ₃ , Sb ₂ O ₃ , Sb ₂ O ₅ , K ₂ Ti ₆ O
₁₃ , oxides such as NaCaP ₂ O ₁₈ and MgB ₂ O ₅ , sulfides such as CuS and ZnS, SiC, TiC, Z
carbides such as rC, VC, NbC, WoC, Si
_{3 N 4, Tin, ZrN,} VN, NbN, TaN, Cr
Nitrides such as _{2 N, TiB 2, ZrB 2} , NbB 2, T
borides such as aB ₂ , CrB, MoB, WB, LaB ₆ , TiSi ₂ , ZrSi ₂ , NbSi ₂ , TaS
i ₂ , a silicide such as CrSi ₂ , MoSi ₂ , WSi ₂ , BaCO ₃ , CaCO ₃ , SrCO ₃ , BaS
Metal salts such as O ₄ and CaSO ₄ , Si ₃ N ₄ —SiC,
Composites such as 9Ai ₂ O ₃ -2B ₂ O ₃ and those doped with them are mentioned.
O, TiO ₂ , SnO ₂ , In ₂ O ₃ , ZrO ₂ , Y ₂
O ₃ , Sb ₂ O ₅ , CuS, ZnS, TiC, WC, T
in, TiB ₂ , ZrB ₂ , MoSi ₂ , WSi ₂ , C
aCO ₃ and BaSO ₄ are preferable, and these can be used alone or in combination of two or more.

In the present invention, the conductive particles are preferably a mixture of at least two or more particles having different particle shapes.
The mixture is preferably a mixture of 0.5 μm particles and particles having an average particle diameter of 0.5 to 3 μm, and the weight ratio of the former is 50 to 95% by weight, and the latter is 5 to 50% by weight. preferable. When the antistatic layer is formed of only particles having an average particle diameter of 0.01 to 0.5 μm, it is effective for preventing static electricity and white spots. In some cases, trouble may occur in preventing the adhesion to the sticky image-receiving layer surface immediately after. Further, when the antistatic layer is formed only of particles having an average particle size of 0.5 to 3 μm, the antistatic, prevention of plural sheets feeding, Although it is effective for running stability and for preventing adhesion to a sticky image receiving layer surface immediately after the production of an image recording medium, white spots may occur.

When two kinds of conductive particles having different particle sizes are present, not only the prevention of electrification but also the prevention of feeding of a plurality of sheets, the running stability, the prevention of whitening, and the stickiness immediately after the production of the image recording medium. It works effectively to prevent adhesion to the image receiving layer surface.

The content of the anionic polymer and / or conductive particles in the composition for forming an antistatic layer is preferably from 5 to 80% by weight, more preferably from 10 to 60% by weight, based on the total amount. .

In the present invention, an antistatic layer is formed by mixing or dispersing an anionic polymer substance and / or conductive particles in a resin.

The resin for forming the antistatic layer is not particularly limited, and various resins such as known binder resins can be appropriately selected and used. Representative examples of the binder resin include, for example, an acrylic resin such as polymethyl methacrylate, a styrene resin such as polystyrene, a vinyl chloride resin such as polyvinyl chloride, a vinylidene chloride resin such as polyvinylidene chloride, and a polyethylene terephthalate. Polyester resin such as cellulose acetate, etc., cellulose resin such as cellulose acetate, polyvinyl acetal resin such as polyvinyl butyral, epoxy resin, amide resin, urethane resin, melamine resin, alkyd resin, phenol resin, fluorine resin , A silicone resin, polycarbonate, polyvinyl alcohol, casein, gelatin and the like. Further, a resin which can be cured by ionizing radiation or heat after the formation of the antistatic layer, such as an ionizing radiation curable resin or a thermosetting resin, can also be used in combination.

In the optical change element transfer foil 43 of the present invention,
As shown in FIG. 13, the engraving 43a10 of the optical change element layer
Is continuous at least at the joint 43a11 of the period of the engraved pattern T.

That is, as shown in FIG. 13A, the card material 50 is supplied and transferred while avoiding the joint 43a11 of the period of the engraved pattern T, and the production efficiency is poor.
For example, as shown in FIG. 13B, when the card material 50 is supplied without alignment, when the card material 50 is located at the joint 43a11 of the period of the engraving pattern T, an image having streaky lines and gradation is formed. As shown in FIG. 13A, the card material 50 needs to be supplied so as to avoid the joint 43a11 of the period of the engraving pattern T, since it becomes difficult to see the identification information and the like.

For this reason, as shown in FIGS. 13C to 13E, the frequency and / or depth of the inscription 43a10 of the optical change element layer is at least at the joint 4 of the period of the inscription pattern T.
Continue at 3a11. That is, as shown in FIG. 13C, the frequency and / or depth of the stamp 43a10 changes stepwise at the joint 43a11 of the cycle of the stamp pattern T, but gradually and continuously as shown in FIG. 13D. 13 (e), and the interval of change is reduced to form a streak shape positively, as shown in FIG. 13 (e), so that it is impossible to distinguish from the streak shape caused by the joint 43a11.

Further, the reflection wavelength when viewed from a specific angle of the engraving of the optical change element layer can be periodically continuous, so that it cannot be distinguished from the streak generated by the joint 43a11. Can be.

In this manner, as shown in FIG. 13 (b), the card material 50 is supplied at random without being aligned, and the card material 50 is located at the joint 43a11 in the period of the engraving pattern T. Even in some cases, the stitches 43a11 make the streak inconspicuous and have an excellent function of preventing forgery and falsification of cards and sheets, and are also excellent in design and identification. In addition, the card material 50 can be supplied at random, and the production efficiency is improved.

Further, in the optical change element transfer foil 43 of the present invention, the optical change element layer is constituted as shown in FIG. That is, in the optical change element layer, the optical conversion effect on the area centered on the face image in the image area A is smaller than the optical conversion effect on the other area B. In this way, even if the card material 50 is supplied at random without being aligned as shown in FIG. 14, it is possible to prevent the face image in the image area A from being difficult to see due to the optical conversion effect.

Further, the optical change element transfer foil 43 has a roll shape, and as shown in FIG.
At least, the optical conversion effect may be smaller than the optical conversion effect in the other area D, and a portion where the optical conversion effect is small may overlap the post-transfer image area.

FIG. 16 shows another embodiment of the present invention. As shown in FIG. 16A, when the optical change element transfer layer 430 of the image recording body has the joint 430a1 of the period of the engraved pattern 430a, it becomes difficult to see an image having streaks and gradations and identification information. .

For this reason, as shown in FIG. 16B, an uneven layer 500 is provided on the entire surface of the cured protective layer 83 on the surface side of the image recording medium, but as shown in FIG. A different layer 501 may be provided, and the joint 430a1 of the period of the engraved pattern 430a can be made inconspicuous by the uneven layer 500 or the layer 501 having a different transmittance. Further, the uneven layer 500 or the layer 501 having a different transmittance may be provided only at a part corresponding to the joint of the periods of the engraving pattern of the optical change element layer. In this case, the joint 430a1 of the period of the engraving pattern 430a is similarly formed It can be less noticeable.

FIGS. 4 and 17 show another embodiment of the present invention. In the image recording medium of this embodiment, the ratio of the refractive indices of the optical change element transfer layer 430, the cured protective layer 83, and the cured transparent protective transfer layer 630 is 0.8 or more and 1.2 or less. By setting the refractive index ratio between the variable element layer and the protective layer, forgery and forgery can be prevented, and the visibility of the identification information 53 and the bibliographic information 54 is improved.

However, the refractive index of the cured transparent protective transfer layer is substantially the same as that of the transparent protective layer 64a2 shown in FIG.
Alternatively, the adhesive layer 64a3 adjacent to the optical change element layer 430
The refractive index of

Further, the image recording medium of this embodiment is
The ratio of the coefficient of linear thermal expansion between the optical change element transfer layer 430, the cured protective layer 83, and the cured transparent protective transfer layer 630 is 0.5 or more and 2.0 or less. By setting the ratio of the coefficient of linear thermal expansion, forgery and alteration can be prevented, and the heat resistance is improved.

However, the coefficient of linear thermal expansion of the cured transparent protective transfer layer is substantially equal to the transparent protective layer 64a shown in FIG.
2, or the adhesive layer 64 adjacent to the optical change element layer 430
It refers to the coefficient of linear thermal expansion of a3.

FIG. 17 shows another embodiment of the present invention. In the image recording body of this embodiment, the ratio of the refractive index of the optical change element transfer layer 430 to the refractive index of the cured protective layer 83 is 0.8 to 1.
By setting the refractive index ratio between the optically variable element layer and the protective layer in this way, forgery and forgery can be prevented, and the visibility of the identification information 53 and the bibliographic information 54 is improved.

In the image recording medium of the further embodiment, the ratio of the coefficient of linear thermal expansion between the optically variable element transfer layer 430 and the cured protective layer 83 is 0.5 to 2.0 or less. By setting the ratio of the coefficient of linear thermal expansion between the layer and the protective layer, forgery and alteration can be prevented, and the heat resistance is improved.

According to the method for producing an image recording medium of the present invention, identification information and bibliographic information are recorded on the surface of an image recording medium having an image receiving layer on a support by, for example, thermal transfer or ink jet. Thermal transfer of the optical change element transfer foil having a, further, on it, to create an image recording body by transferring a transparent protective transfer foil having a transparent protective layer,
By transferring the foil twice, the scratch strength is improved, and a card without burrs can be obtained.

Further, identification information and bibliographic information are recorded on the surface of an image recording medium having an image receiving layer on a support by thermal transfer or ink jet, and then a transparent protective transfer foil having a transparent protective layer is thermally transferred for identification. Information and bibliographic information are protected, and an optical variable element transfer foil having an optical variable element layer is transferred thereon to form an image recording body on which the optical variable element layer is mounted.

Further, identification information and bibliographic information are recorded on the surface of an image recording medium having an image receiving layer on a support by thermal transfer or ink jet, and then a transparent protective transfer foil having a transparent protective layer is thermally transferred to the support. An optical change element that protects identification information and bibliographic information, further forms an actinic ray-curable resin layer thereon, irradiates with actinic light, and then cures the actinic ray-curable resin layer. The transfer foil is transferred to form an image recording body on which the optical variable element layer is mounted.

Further, identification information and bibliographic information are recorded on the surface of the image recording material having an image receiving layer on the support by thermal transfer or ink jet, and then a transparent protective transfer foil having a transparent protective layer is thermally transferred to the support. After protecting the identification information and bibliographic information, and further transferring an optical change element transfer foil having an optical change element layer thereon, an actinic ray curable resin layer is formed on the entire surface of the image recording medium, and actinic ray irradiation is performed. Before and after transferring this transparent protective transfer foil or optical change element transfer foil to create an image recording body with the protected optical change element layer mounted thereon, it is preferable to perform a static elimination treatment on the image recording body surface. As a result, a card or a sheet as an image recording body free from failure due to the attachment of dust can be obtained.

Next, the card material of the present invention will be described.

The support may be a substrate such as paper, paper such as polypropylene, polystyrene or synthetic paper obtained by laminating them with paper, transparent or white polyethylene terephthalate base film, polyethylene terephthalate base film, vinyl chloride base film, etc. Plastic films, various metal and ceramic films, etc., and the substrate may contain an IC memory, an optical memory, a magnetic memory, or the like, and may be a single layer or a composite film of the above films. The thickness of the substrate is about 100 to 1000 μm, preferably 200 to 700 μm. A writing layer may be provided on the back side.

Next, the image recording layer of the present invention will be described.

The image element of the present invention can be obtained by using a thermal transfer sheet on an image on an information carrying layer provided with at least one selected from an authentication identification image such as a face image, an attribute information image, and format printing, or a printing surface. The protective layer was formed.

As a method of forming an authentication identification image represented by a face image, a silver halide photographic method and a sublimation type thermal transfer recording method, which are advantageous for forming a gradation image, can be cited. So the latter is becoming more common. The attribute information is a name, an address, a date of birth, a qualification, and the like. The attribute information is usually recorded as character information, and a fusion-type thermal transfer recording method is generally used. The format printing is performed on the substrate or the image receiving layer used in the sublimation type thermal recording system by a printing method such as resin letterpress printing, lithographic printing, and silk printing. The picture layer is selected as appropriate from printed materials, holograms, barcodes, matte patterns, fine prints, copy-forgery-inhibited patterns, uneven patterns, etc., visible light absorbing color material, ultraviolet light absorbing material, infrared light absorbing material, fluorescent brightening material, metal deposition layer , A glass deposition layer and the like. The function as the intermediate layer is such that a light-curing resin layer and a thermosetting resin layer are added as a cushion function for absorbing irregularities of the transferred object and a resin curing function for the purpose of protecting the transferred picture layer.

The transfer of the transfer foil to the material to be transferred is usually performed using a means such as a thermal head, a heat roller, a hot stamping machine or the like which can apply pressure while heating.

The sublimation image forming method uses a sublimation type thermal transfer recording ink sheet. The sublimation type thermal transfer recording ink sheet can be composed of a support and a sublimable dye-containing ink layer formed thereon.

The support has good dimensional stability,
There is no particular limitation as long as it can withstand the heat during recording with the thermal head, and a conventionally known one can be used.

The sublimable dye-containing ink layer basically contains a sublimable dye and a binder. Sublimable dyes include cyan dyes, magenta dyes and yellow dyes. As the cyan dye, JP-A-59
JP-78896, JP-A-59-227948, JP-A-60-24966, JP-A-60-53563,
JP-A-60-130735, JP-A-60-131292, JP-A-60-239289, and JP-A-61-1939
No. 6, No. 61-22993, No. 61-312
Nos. 92, 61-31467, 61-35
No. 994, No. 61-49893, No. 61-1
48269, 62-191191, 6
Examples thereof include naphthoquinone dyes, anthraquinone dyes, and azomethine dyes described in JP-A-3-91288, JP-A-63-91287, and JP-A-63-290793.

The magenta dye is described in JP-A-59-78.
Nos. 896, 60-30392, 60-3
0394, 60-253595 and 61
-262190, 63-5992, 6
JP-A 3-205288, JP-A 64-159, JP-A-6-159
Examples thereof include anthraquinone-based dyes, azo dyes, and azomethine-based dyes described in each publication such as 4-63194. Examples of the yellow dye include JP-A-59-788.
No. 96, No. 60-27594, No. 60-31
No. 560, No. 60-53565, No. 61-1
Examples thereof include methine dyes, azo dyes, quinophthalone dyes and anthrisothiazole dyes described in JP-A Nos. 2394 and 63-122594.

Particularly preferred as a sublimable dye is a compound having an open-chain or closed-type active methylene group, which is an oxidized p-phenylenediamine derivative or p-phenylenediamine derivative.
Azomethine dyes obtained by a coupling reaction with an oxidized form of an aminophenol derivative and indoaniline obtained by a coupling reaction with an oxidized form of a phenol or naphthol derivative or a p-phenylenediamine derivative or an oxidized form of a p-aminophenol derivative It is a pigment.

When a metal ion-containing compound is compounded in the image receiving layer, a sublimable dye which reacts with the metal ion-containing compound to form a chelate is included in the sublimable dye-containing ink layer. Is good. Such chelate-forming sublimable dyes include, for example,
-78893, 59-109349, Japanese Patent Application Nos. 2-213303, 2-214719, and 2-203742 of cyanogen capable of forming at least a bidentate chelate. Dyes, magenta dyes and yellow dyes can be mentioned. A preferred sublimable dye capable of forming a chelate can be represented by the following general formula.

X 1 -N = N-X 2 -G wherein X 1 is required to complete an aromatic carbocyclic or heterocyclic ring in which at least one ring is composed of 5 to 7 atoms. Represents a collection of atoms, wherein at least one of the carbon atoms adjacent to the azo bond is a nitrogen atom or a carbon atom substituted with a chelating group. X2
Represents an aromatic heterocyclic ring or an aromatic carbocyclic ring in which at least one ring is composed of 5 to 7 atoms. G represents a chelating group.

Regarding any sublimable dye, the sublimable dye contained in the sublimable dye-containing ink layer may be any of a yellow dye, a magenta dye, and a cyan dye if the image to be formed is a single color. Depending on the color tone of the image to be formed, two or more of the three dyes or other sublimable dyes may be included. The amount of the sublimable dye to be used is generally 0.1 to ²⁰ g, preferably 0.2 to 5 g, per 1 m2 of the support.
The binder of the ink layer is not particularly limited, and a conventionally known binder can be used. Further, conventionally known various additives can be appropriately added to the ink layer. Sublimation type thermal transfer recording ink sheet is prepared by dispersing or dissolving the various components forming the ink layer in a solvent to prepare an ink layer forming coating liquid, applying this on the surface of the support, It can be manufactured by drying. The thickness of the ink layer thus formed is usually
0.2 to 10 μm, preferably 0.3 to 3 μm
It is.

Next, the transfer foil of the present invention will be described.

As a support for the transfer foil, a release layer is provided as a lowermost layer on one surface of a plastic film support such as polyester, polyethylene terephthalate, polyethylene naphthol or ABS resin having heat resistance, and an adhesive layer is provided as an uppermost layer. A picture layer, an intermediate layer, and the like are provided between the release layer and the adhesive layer as needed. The thickness of the plastic film support is usually 3 to 50 μm, preferably 10 to 30 μm.

An acrylic resin having a high glass transition temperature, a polyvinyl acetal resin,
Resins such as polyvinyl butyral resin, waxes, silicone oils, fluorine compounds, water-soluble polyvinyl pyrrolidone resins, polyvinyl alcohol resins, Si
Modified polyvinyl alcohol, methylcellulose resin, hydroxycellulose resin, silicone resin, paraffin wax, acryl-modified silicone, polyethylene wax, ethylene vinyl acetate, and other resins, as well as polydimethylsiloxane and modified products thereof, for example, polyester-modified silicone, acrylic Oils or resins such as modified silicone, urethane-modified silicone, alkyd-modified silicone, amino-modified silicone, epoxy-modified silicone, polyether-modified silicone, or cured products thereof;
And the like. Other fluorine-based compounds include fluorinated olefins and perfluorophosphate-based compounds. Preferred olefin compounds include dispersions of polyethylene and polypropylene, and long-chain alkyl compounds such as polyethyleneimine octadecyl. These release agents having poor solubility can be used after being dispersed.

It is also possible to add to other polymers similarly to the silicone compound. In addition, fine particles (micron or submicron order) such as silica particles and boron nitride are also effective. Thickness is 0.1-2μ
m is preferred.

As the adhesive layer of the transfer foil, ethylene vinyl acetate resin, ethyne ethyl acrylate resin, ethylene acrylate resin, ionomer resin,
Polybutadiene resin, acrylic resin, polystyrene resin, polyester resin, olefin resin, urethane resin, tackifier (for example, phenol resin, rosin resin,
(Terpene resin, petroleum resin, etc.), and a copolymer or a mixture thereof, and the thickness is preferably 0.1 to 10 μm.

Specifically, examples of the urethane-modified ethylene ethyl acrylate copolymer include Hitec S-6254, S-6254B and S-312 manufactured by Toho Chemical Industry Co., Ltd.
9 are commercially available, and as polyacrylic acid ester copolymers, Jurima AT-210, AT
-510, AT-613, plus size L-201, SR-102, SR-103, J manufactured by Ryogo Chemical Industry Co., Ltd.
-4 and the like are commercially available. The weight ratio of the urethane-modified ethylene ethyl acrylate copolymer to the polyacrylate copolymer is preferably from 9: 1 to 5: 5, and the thickness of the adhesive layer is preferably from 0.1 to 1.0 μm.

The intermediate layer of the transfer foil is preferably composed of one or more intermediate layers, and if necessary, may be interposed as a primer layer or a barrier layer to further improve the adhesion between the layers. As a specific compound, a thermoplastic resin composed of a block polymer of polystyrene and polyolefin, polyvinyl butyral, and the like are preferable. Examples of the polyvinyl butyral resin having a degree of polymerization of 1000 or more in the intermediate layer of the present invention include Slek BH-3, BX-1, BX-2, BX-5, and BX manufactured by Sekisui Chemical Co., Ltd.
-55, BH-S, Denka Butyral # 4000-2, # 5000-A, # 6000-, manufactured by Denki Kagaku Kogyo KK
EP and the like are commercially available. The thermosetting resin of the polybutyral in the intermediate layer is not limited to the degree of polymerization before the thermosetting, and may be a resin having a low degree of polymerization, and an isocyanate curing agent or an epoxy curing agent may be used for the thermosetting. Is 5
Preferred is 0 to 90 ° C for 1 to 24 hours. The thickness of the intermediate layer is preferably from 0.1 to 1.0 μm.

A hologram is used as the optical change element of the present invention.

The hologram used in the present invention includes a laser reproduction hologram such as a relief hologram, a Fresnel hologram, a Fraunhofer hologram, a lensless Fourier transform hologram, an image hologram, a white reproduction hologram such as a Lippmann hologram and a rainbow hologram, a color hologram, and a computer hologram. ,
A hologram display, a multiflex hologram, a hologram flex stereogram, a holographic diffraction grating, or the like can be arbitrarily adopted.

The optical variable element layer used in the present invention is
For example, a relief hologram is preferably used. The relief hologram is formed by laminating a hologram forming layer and a hologram effect layer. Various resins can be selected for the hologram forming layer as long as it does not violate the present invention. For example, an acrylic urethane resin, an epoxy-modified acrylic resin, an acrylamide resin, a polystyrene resin, an unsaturated polyester resin, etc. resin alone, in combination, or by adding an ultraviolet curing agent, and formed by ultraviolet curing, or electron beam curing with an electron beam curable resin. can do. The refractive index and the linear thermal expansion coefficient of the present invention can be obtained by appropriately selecting various materials such as those described above.

A hologram original plate in which the hologram interference pattern is formed in an uneven shape is pressed and compressed on a resin layer formed of the above-mentioned various materials, and the uneven shape is transferred to the resin surface and cured. It can be obtained by forming a hologram effect layer of a thin film which has sufficient transparency and large reflectivity at a certain angle on the surface of the uneven shape and is made of a material having a different refractive index from the hologram forming layer. As the hologram effect layer, a commonly used metal deposition layer,
A metal oxide deposition layer or the like can be used as appropriate. Holokuram, where images are reproduced with white light such as daylight and illumination light,
Since the hologram image is observed even in a normal state, the discrimination is high and the forgery and alteration prevention is high. [Examples] Hereinafter, the present invention will be described in detail with reference to examples, but embodiments of the present invention are not limited thereto. In addition,
Hereinafter, “parts” indicates “parts by weight”.

-Preparation of a card provided with face image, attribute information and format printing- (Preparation of support) White polypropylene resin [Mitsubishi Oil Co., Ltd.] on both sides of 350 μm thick polyethylene terephthalate [Tetron HS350 manufactured by Teijin Limited] Manufactured by Kabushiki Kaisha: Noblen FL25HA] was provided to a thickness of 50 μm by an extrusion lamination method. One surface of the obtained composite resin sheet was subjected to a corona discharge treatment at 25 W / m 2 · min, and this sheet was used as a support.

(Preparation of Image Receiving Layer for Sublimation Type Thermal Transfer Recording)
A coating liquid for forming a first image-receiving layer, a coating liquid for forming a second image-receiving layer, and a coating liquid for forming a third image-receiving layer having the following compositions are applied and dried in this order on the surface of the support subjected to the corona discharge treatment, The image receiving layers were formed by laminating the respective layers so that the thicknesses became 0.2 μm, 2.5 μm, and 0.5 μm.

<Coating Liquid for Forming First Image Receiving Layer> 9 parts of polyvinyl butyral resin [SREC BL-1 manufactured by Sekisui Chemical Co., Ltd.] 1 part of isocyanate [Coronate HX manufactured by Nippon Polyurethane Industry Co., Ltd.] Methyl ethyl ketone 80 Part butyl acetate 10 parts <Coating liquid for forming the second image receiving layer> polyvinyl butyral resin 6 parts [manufactured by Sekisui Chemical Co., Ltd .: Esrec BX-1] metal ion-containing compound (compound MS) 4 parts methyl ethyl ketone 80 parts butyl acetate 10 parts <Coating liquid for forming third image receiving layer> Polyethylene wax 2 parts [Toho Chemical Industry Co., Ltd .: Hitech E1000] Urethane-modified ethylene acrylic acid copolymer 8 parts [Toho Chemical Industry Co., Ltd .: Hitec S6254] Methylcellulose [Shin-Etsu Chemical Co., Ltd .: SM15] 0.1 parts Water 90 parts ( Preparation of recording layer) A coating liquid for forming a first writing layer having the following composition, a second writing layer having the following composition, is laminated on a surface of the support opposite to the image receiving layer, on the side opposite to the image receiving layer, manufactured by Oji Yuka Co., Ltd. The coating liquid for forming and the coating liquid for forming the third writing layer were applied and dried in this order, and laminated so that the thicknesses became 5 μm, 15 μm, and 0.2 μm, respectively, to form an image receiving layer. <Coating liquid for forming first writing layer> Polyester resin [manufactured by Toyobo Co., Ltd .: Byron 200] 8 parts Isocyanate 1 part [manufactured by Nippon Polyurethane Industry Co., Ltd .: Coronate HX] Carbon black trace amount of titanium dioxide particles [Ishihara Sangyo Co., Ltd .: CR80] 1 part Methyl ethyl ketone 80 parts Butyl acetate 10 parts <Coating liquid for forming the second writing layer> Polyester resin 4 parts [Toyobo Co., Ltd .: Vylonal MD1200] Silica 5 parts Titanium dioxide particles [Ishihara 1 part Water 90 parts <Coating solution for forming the third writing layer> Polyamide resin [manufactured by Sanwa Chemical Industry Co., Ltd .: Sunmide 55] 5 parts Methanol 95 parts Of the obtained writing layer The center line average roughness was 1.34 μm.

(Format Printing) A logo and an OP varnish were sequentially printed by a resin relief printing method.

(Preparation of Ink Sheet for Sublimation Thermal Transfer Recording) A coating liquid for forming a yellow ink layer and a magenta ink layer having the following composition was applied to a 6 μm-thick polyethylene terephthalate sheet which was processed to prevent fusing on the back surface. The liquid and the coating liquid for forming a cyan ink layer were provided so as to have a thickness of 1 μm, respectively, to obtain three color ink sheets of yellow, magenta and cyan.

<Coating liquid for forming yellow ink layer> Yellow dye (compound Y-1) 3 parts Polyvinyl acetal 5.5 parts [manufactured by Denki Kagaku Kogyo KK: Denkabutyral KY-24] Polymethyl methacrylate-modified polystyrene 1 part [Toa Gosei Chemical Industry Co., Ltd .: Rededa GP-200] Urethane-modified silicone oil 0.5 part [Dainichi Seika Industry Co., Ltd .: Diaromer SP-2105] Methyl ethyl ketone 70 parts Toluene 20 parts <Magenta ink layer Coating liquid for forming> Magenta dye (Compound M-1) 2 parts Polyvinyl acetal 5.5 parts [Denka Butyral KY-24, manufactured by Denki Kagaku Kogyo Co., Ltd.] Polymethyl methacrylate-modified polystyrene 2 parts [Toa Gosei Chemical Industry Co., Ltd. Ltd .: Rededa GP-200] 0.5 parts urethane modified silicone oil [ Manufactured by Dainichi Seika Kogyo Co., Ltd .: Dialomer SP-2105] Methyl ethyl ketone 70 parts Toluene 20 parts <Coating liquid for forming cyan ink layer> Cyan dye (Compound C-1) 1.5 parts Cyan dye (Compound C-2) 1.5 parts Polyvinyl acetal 5.6 parts [Denka Butyral KY-24 manufactured by Denki Kagaku Kogyo Co., Ltd.] Polymethyl methacrylate modified polystyrene 1 part [Toa Gosei Chemical Industry Co., Ltd .: Rededa GP-200] Urethane modified Silicon oil 0.5 parts [Dainichika Chemical Co., Ltd .: Dialomer SP-2105] Methyl ethyl ketone 70 parts Toluene 20 parts (Preparation of ink sheet for melt-type thermal transfer recording) Thickness 6 μm processed to prevent fusion on the back surface To a polyethylene terephthalate sheet having the following composition so as to have a thickness of 2 μm. Cloth and dried to obtain an ink sheet. <Coating liquid for forming ink layer> Carnauba wax 1 part Ethylene vinyl acetate copolymer 1 part [manufactured by Mitsui Dupont Chemical Company: EV40Y] Carbon black 3 parts Phenol resin [Arakawa Chemical Industry Co., Ltd .: Tamanol 521] 5 parts Methyl ethyl ketone 90 parts (Formation of face image) The image receiving layer and the ink side of the ink sheet for sublimation type thermal transfer recording are overlapped, and the output from the ink sheet side is 0.23 W / dot, pulse width 0.3 to 4 using a thermal head. By heating the image under conditions of 0.5 ms and a dot density of 16 dots / mm, a human image with gradation was formed on the image receiving layer. In this image, the dye and nickel in the image receiving layer form a complex. (Formation of character information) The OP varnish portion and the ink side of the ink sheet for fusion-type thermal transfer recording are overlapped, and the output from the ink sheet side is 0.5 W / dot, pulse width 1.0 ms, dot density using a thermal head. By heating under the condition of 16 dots / mm, character information was formed on the OP varnish.

As described above, a card provided with a face image, attribute information, and format printing was created. —Preparation of Transfer Foil 1— One side of polyethylene terephthalate (S-25) manufactured by Diafoil Hoechst Co., Ltd. is coated with a release layer, an intermediate layer and an adhesive layer having the following formulation by wire bar coating and dried to transfer the optical change element. A foil was obtained.

(Release layer) Film thickness 0.5 μm Acrylic resin (Dianal BR-87, manufactured by Mitsubishi Rayon Co., Ltd.) 5 parts Polyvinyl acetoacetal (SP value: 9.4) (Sekisui Chemical Co., Ltd., KS- 1) 5 parts Methyl ethyl ketone 40 parts Toluene 50 parts (optical change element layer) Film thickness 2 μm Hologram image (adhesive layer) Film thickness 2 μm Styrene resin (Asahi Kasei Corporation, Tuftec M-1953) 6 parts Alicyclic saturated hydrocarbon Resin (Arakawa Chemical Co., Ltd., Alcon P100) 3.5 parts Calcium carbonate (Okutama Industry Co., Ltd., Tamapearl TP-123) 0.5 parts Toluene 90 parts (Optical change element layer) From acrylic urethane resin with a film thickness of 2 μm After coating a layer, a ZnS vapor deposition film was provided thereon, followed by engraving with a mold to obtain a hologram layer.

A release layer having the above composition, a hologram image layer,
A transfer foil 1 composed of an adhesive layer was prepared.

Example 1 Further, a pressure of 150 kg was applied to the image receiving body on which images and characters were recorded by using a heat roller having a diameter of 5 cm and a rubber hardness of 85, which was heated to a surface temperature of 200 ° C. using the transfer foil 1 having the above-mentioned structure. / Cm ² for 1.2 seconds to perform transfer.

The coating solution containing the ultraviolet curable resin was applied onto the image receiving body onto which the transfer foil 1 was transferred by a gravure roll coater having a specific ground pattern so as to have an application amount of 20 g / m ² . The UV-curable resin-containing coating solution (Table 1) was cured under curing conditions to form a UV-curable protective layer.

Curing Conditions Light Irradiation Source High-pressure mercury lamp of 60 w / cm ² Irradiation distance 10 cm Irradiation mode Light scanning at 3 cm / sec Example 2-Preparation of transfer foil with protective property-Release layer of 0.1 μm fluororesin layer With thickness of 20μ
m, a coating liquid for forming an actinic ray curable layer, a coating liquid for forming a hologram layer, a coating liquid for forming an intermediate layer, and a coating liquid for forming an adhesive layer are coated in this order on a release layer, dried and laminated to form a thermal transfer foil. It was created. <Coating liquid for forming actinic ray-curable layer> Table 1 Using binder resin layer 2 Curing after coating was performed with a high-pressure mercury lamp of 160 W / cm ^{2 at} an irradiation distance of 18 cm and optical scanning of CS 5 m. The applied film thickness was 3.0 μm. (Optical change element layer) Film thickness 2 μm Hologram image <Intermediate layer forming coating liquid> Film thickness 1.0 μm 10 parts of polyvinyl butyral resin described in Table 1 [manufactured by Sekisui Chemical Co., Ltd .: Esrec B series] 90 parts of methyl ethyl ketone Tex M-1953 (Asahi Kasei) 1 part Curing at the time of adding a curing agent was performed at 50 ° C. for 24 hours. <Adhesive layer forming coating liquid> 8 μm thick urethane-modified ethylene ethyl acrylate copolymer 8 parts [Toho Chemical Industry Co., Ltd .: Hitec S6254B] Polyacrylic ester copolymer 2 parts [Nippon Pure Chemical Co., Ltd. ): Jurimar AT510] 45 parts of water 45 parts of ethanol -Formation of a protective layer on the card- The recording surface of the card provided with the face image, the attribute information and the format printing in Example 1 and the transfer layer surface of the thermal transfer sheet were overlapped.
The surface temperature of a heat roller in which silicone rubber (rubber hardness: 80) was applied around a metal roller having an outer diameter of 3 cm was set to 19
The sheet was heated to 0 ° C., pressed from the thermal transfer sheet side, and transferred at a transfer speed of 23 mm / sec and a linear pressure of 10 kg / cm. The support of the thermal transfer sheet was peeled off to form a protective layer on the card. (Optical change element layer) A layer made of acrylic urethane resin having a thickness of 2 μm was applied, and a ZnS vapor deposition film was provided thereon, followed by engraving with a mold to obtain a hologram layer.

Example 3-Preparation of Transfer Foil with Protective Property-20 μm thick provided with a 0.1 μm fluororesin release layer
On the release layer of the polyethylene terephthalate film 2 of m, a coating liquid for forming an actinic ray curable layer, a coating liquid for forming an intermediate layer, and a coating liquid for forming an adhesive layer were applied in this order, dried and laminated to form a thermal transfer foil. . <Coating liquid for forming actinic ray curable layer> Using binder resin layer 2 shown in Table 1 Curing after coating was performed with a high-pressure mercury lamp of 160 W / cm ^{2 at} an irradiation distance of 18 cm and optical scanning of CS 5 m.

The coating thickness was 3.0 μm. <Intermediate layer forming coating liquid> Film thickness 1.0 μm Polyvinyl butyral resin described in Table 1 10 parts [manufactured by Sekisui Chemical Co., Ltd .: Eslec B series] methyl ethyl ketone 90 parts Tuftex M-1953 (Asahi Kasei) 1 part Curing agent Curing at the time of addition was performed at 50 ° C. for 24 hours. <Adhesive layer forming coating liquid> 8 μm thick urethane-modified ethylene ethyl acrylate copolymer 8 parts [Toho Chemical Industry Co., Ltd .: Hitec S6254B] Polyacrylic ester copolymer 2 parts [Nippon Pure Chemical Co., Ltd. ): Jurimar AT510] 45 parts of water 45 parts of ethanol -Formation of a protective layer on the card- The recording surface side of the card on which the transfer foil 1 was transferred in Example 1 and the transfer layer surface of the thermal transfer sheet were overlapped to form an outer diameter of 3 cm. The surface temperature of a heat roller having a silicone rubber (rubber hardness 80) around a metal roller is heated to 190 ° C., pressed from the thermal transfer sheet side, and transferred at a transfer speed of 23 mm / sec and a linear pressure of 10 mm.
Transfer was performed under the condition of kg / cm, and the support of the thermal transfer sheet was peeled off to form a protective layer on the card.

Example 4-Preparation of transfer foil with protective property-20 μm thick provided with a 0.1 μm fluororesin release layer
On the release layer of the m-polyethylene terephthalate film 2, a coating liquid for forming an actinic ray-curable layer, a hologram layer, and a coating liquid for forming an adhesive layer were applied in this order, dried and laminated to prepare a thermal transfer foil. <Coating liquid for forming actinic ray curable layer> Using binder resin layer 3 shown in Table 1 Curing after coating was performed with a high-pressure mercury lamp of 160 W / cm ^{2 at} an irradiation distance of 18 cm and optical scanning of CS 5 m. The applied film thickness was 3.0 μm. (Optical change element layer) Thickness 2 μm Hologram image <Adhesive layer forming coating liquid> Thickness 0.5 μm Urethane-modified ethylene ethyl acrylate copolymer 8 parts [Toho Chemical Industry Co., Ltd .: Hitec S6254B] Polyacrylate Copolymer 2 parts [Nippon Pure Chemical Co., Ltd .: Julimer AT510] Water 45 parts Ethanol 45 parts-Formation of protective layer on card-Recording surface side of card on which transfer foil was transferred in Example 1 and thermal transfer sheet The surface temperature of a heat roller having a silicone roller (rubber hardness of 80) attached around a metal roller having an outer diameter of 3 cm and superposed on the transfer layer surface is heated to 190 ° C., pressed from the thermal transfer sheet side, and transferred at a transfer speed of 23 mm / sec. , Linear pressure 10k
The transfer was performed under the conditions of g / cm, and the support of the thermal transfer sheet was peeled off to form a protective layer on the card. (Optical change element layer) A layer made of acrylic urethane resin having a thickness of 2 μm is applied,
After a ZnS vapor deposition film was provided thereon, marking was performed with a mold to obtain a hologram layer.

Example 5 The image receiving device was heated to a surface temperature of 200 ° C. on the image receiving body on which images and characters were recorded by using the transfer foil 1 having the above-mentioned structure, and the pressure was adjusted to 15 by using a heat roller having a rubber hardness of 85 and a diameter of 5 cm.
The transfer was performed by applying heat at 0 kg / cm ² for 1.2 seconds.

On the image receiving body to which the transfer foil 1 was transferred, the coating solution containing the ultraviolet curable resin was applied by a gravure roll coater having a specific ground pattern so as to have an application amount of 20 g / m ² . The UV-curable resin-containing coating solution (Table 1) was cured under curing conditions to form a UV-curable protective layer.

Curing Conditions Light Irradiation Source High-pressure mercury lamp of 60 w / cm ² Irradiation distance 10 cm Irradiation mode Light scanning at 3 cm / sec Example 6-Preparation of transfer foil with protective property-Release layer of 0.1 μm fluororesin layer With thickness of 20μ
m, a coating liquid for forming an actinic ray curable layer, a coating liquid for forming a hologram layer, a coating liquid for forming an intermediate layer, and a coating liquid for forming an adhesive layer are coated in this order on a release layer, dried and laminated to form a thermal transfer foil. It was created. <Coating liquid for forming actinic ray-curable layer> Table 1 Using binder resin layer 2 Curing after coating was performed with a high-pressure mercury lamp of 160 W / cm ^{2 at} an irradiation distance of 18 cm and optical scanning of CS 5 m. The applied film thickness was 3.0 μm. (Optical change element layer) Film thickness 2 μm Hologram image <Intermediate layer forming coating liquid> Film thickness 1.0 μm 10 parts of polyvinyl butyral resin described in Table 1 [manufactured by Sekisui Chemical Co., Ltd .: Esrec B series] 90 parts of methyl ethyl ketone Tex M-1953 (Asahi Kasei) 1 part Curing at the time of adding a curing agent was performed at 50 ° C. for 24 hours. <Adhesive layer forming coating liquid> 8 μm thick urethane-modified ethylene ethyl acrylate copolymer 8 parts [Toho Chemical Industry Co., Ltd .: Hitec S6254B] Polyacrylic ester copolymer 2 parts [Nippon Pure Chemical Co., Ltd. ): Jurimar AT510] 45 parts of water 45 parts of ethanol -Formation of a protective layer on the card- The recording surface of the card provided with the face image, the attribute information and the format printing in Example 1 and the transfer layer surface of the thermal transfer sheet were overlapped.
The surface temperature of a heat roller in which silicone rubber (rubber hardness: 80) was applied around a metal roller having an outer diameter of 3 cm was set to 19
The sheet was heated to 0 ° C., pressed from the thermal transfer sheet side, and transferred at a transfer speed of 23 mm / sec and a linear pressure of 10 kg / cm. The support of the thermal transfer sheet was peeled off to form a protective layer on the card. (Optical change element layer) A layer made of acrylic urethane resin having a thickness of 2 μm was applied, and a ZnS vapor deposition film was provided thereon, followed by engraving with a mold to obtain a hologram layer.

Comparative Example 1 A transfer foil in which a resin composed of a polythiourethane resin was coated on PFT and a styrene-based resin was coated was prepared in the same manner as in Example 3.

Comparative Example 2 A card was prepared in the same manner as in Comparative Example 1 except that the resin was changed to a layer made of a vinyl acetate resin.

Examples 1 to 6, Comparative Example 1 and Comparative Example 1 Refractive index According to JIS K6911,
Further, visibility and heat resistance were evaluated according to JIS K6714 of linear thermal expansion. Table 1 and Table 2 show the results.
Shown in Evaluation: Visibility No face identification problem ○ Difficult to identify or added × Heat resistance Temperature 90 ° C No change ○ Delamination, cracking ×

[0129]

As described above, the inventions according to the first to fifth, fifth, seventh and twentieth aspects have an excellent anti-counterfeit and forgery function, are excellent in surface protection, and have good surface friction durability. It has good properties, is extremely difficult to forge and falsify, and is excellent in design and distinguishability.

According to the sixth aspect of the present invention, it has an excellent function of preventing forgery and falsification and has heat durability.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an image recording body creating apparatus according to a first embodiment.

FIG. 2 is a diagram illustrating a layer configuration of an image recording medium.

FIG. 3 is a schematic configuration diagram of an image recording body creating apparatus according to a second embodiment.

FIG. 4 is a diagram illustrating a layer configuration of an image recording medium.

FIG. 5 is a schematic configuration diagram of an image recording body creating apparatus according to a third embodiment.

FIG. 6 is a diagram illustrating a layer configuration of an image recording body.

FIG. 7 is a schematic configuration diagram of an image recording body creating apparatus according to a fourth embodiment.

FIG. 8 is a diagram illustrating a layer configuration of an image recording body.

FIG. 9 is a schematic configuration diagram of an image recording body creating apparatus according to a fifth embodiment.

FIG. 10 is a diagram illustrating a layer configuration of an image recording medium.

FIG. 11 is a diagram showing an embodiment of an optical change element transfer foil.

FIG. 12 is a diagram showing an embodiment of a transparent protective transfer foil.

FIG. 13 is a diagram illustrating an embodiment in which the frequency and / or depth of marking of an optical change element layer are provided.

FIG. 14 is a diagram illustrating an embodiment in which a portion having a different optical conversion effect is provided in the optical change element layer.

FIG. 15 is a diagram illustrating an embodiment in which a portion having a different optical conversion effect is provided in the optical change element layer.

FIG. 16 is a diagram illustrating an embodiment in which an uneven layer or a layer having a different transmittance is provided.

FIG. 17 is a diagram illustrating an embodiment in which the ratio of the refractive index between the optically variable element transfer layer and the cured protective layer is set.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image recording body preparation apparatus 10 Card material supply part 20 Information recording part 40 Security provision part 43 Optical change element transfer foil 44 Curing Optical change element transfer foil 50 Card material 51 Support 52 Information carrying layer 60, 70 Protection provision part 63 Curing Transparent protective transfer foil 80 UV protection section

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Seiji Hidaka 1st Sakuracho, Hino-shi, Tokyo Konica Corporation (72) Inventor Ryoji Hattori 1st Sakuracho, Hino-shi, Tokyo Fonica term in Konica Corporation (reference) 2C005 HA01 HA06 HA10 JA01 JA11 JA26 JB08 JB09 JB12 JB13 JB19 KA06 KA37 LA11 LA20 LA30 2K008 AA04 AA13 FF12 FF13 FF14 GG05 3B005 EA12 EB05 EB07 FA04 FB03 FB26 5B035 AA07 BB05 BB05

Claims (20)

[Claims] 1. An image recording medium having, on a support, an information carrying layer carrying at least one selected from identification information and bibliographic information, an optical variable element layer, and a protective layer, engraving of the optical variable element layer. Characterized in that the frequency and / or the depth of the image recording medium are continuous at least at the joint of the periods of the engraving pattern. 2. An image recording body having an information carrying layer carrying at least one selected from identification information and bibliographic information, an optical variable element layer, and a protective layer on a support, wherein the optical variable element layer is engraved. Wherein the reflection wavelength when viewed from a specific angle is continuous at the joint of the periods of the engraving pattern. 3. An image recording medium having, on a support, an image area having gradation and an information carrying layer for carrying bibliographic information, an optical variable element layer, and a protective layer, wherein the optical variable element layer is provided in the image area. Wherein the optical conversion effect on an area centered on the face image is smaller than the optical conversion effect on other areas. 4. An image recording medium having an image area having gradations, an information carrying layer for carrying bibliographic information, an optical change element layer, and a protective layer on a support, wherein either the image recording medium side or the surface side is provided. On the entire surface of the layer or the portion corresponding to the joint of the period of the engraved pattern of the optical conversion element layer,
Alternatively, an image recording medium characterized by having an unevenness or a layer having a different light transmittance in at least part of the image area and the bibliographic information. 5. An image recording medium having an information carrying layer for carrying identification information and bibliographic information, an optical change element layer, and a protective layer on a support, wherein the refractive index of the optical change element layer and the protective layer is different. An image recording medium having a ratio of 0.8 or more and 1.2 or less. 6. An image recording material having an information carrying layer for carrying identification information and bibliographic information, an optical variable element layer, and a protective layer on a support, wherein a linear thermal expansion of the optical variable element layer and the protective layer is provided. An image recording medium, wherein the ratio of the ratio is 0.5 or more and 2.0 or less. 7. The protective layer according to claim 1, wherein the protective layer is a cured transparent protective layer cured by actinic light.
The image recording material according to any one of the above. 8. The image recording body according to claim 1, wherein the optical change element layer is a hologram, a diffraction grating, or a relief structure. 9. At least an optically variable element layer on a support,
A transfer foil provided with an adhesive layer, wherein the transfer foil is in a roll shape, and the frequency and / or depth of the engraving of the optical element change layer is continuous at the joint of the period of the engraving pattern in the longitudinal direction. Optical change element transfer foil. 10. A transfer foil on which at least an optical change element layer and an adhesive layer are provided on a support, wherein the transfer foil is in a roll shape and is viewed from a specific angle of engraving of the optical change element layer. An optical change element transfer foil, wherein the reflection wavelength is continuous at the joint of the periods of the engraving pattern. 11. A transfer foil provided with at least an optical change element layer and an adhesive layer on a support, wherein the transfer foil has a roll shape and a portion in the width direction has at least an optical conversion effect on other areas. An optical change element transfer foil, wherein a portion smaller than a certain optical conversion effect and a portion having a small optical conversion effect overlaps an image area after transfer. 12. The transfer foil according to claim 9, wherein the protective layer is a cured transparent protective layer cured by actinic light. 13. The method according to claim 9, wherein a release layer and a protective layer are provided in this order between the support and the optical change element layer, and the protective layer is cured by actinic light. The transfer foil for optically variable elements according to claim 1. 14. The transfer foil according to claim 9, wherein the optical change element layer is a hologram, a diffraction grating, or a relief structure. 15. An information carrying layer for carrying at least one selected from identification information and bibliographic information on a support,
An optical variable element layer having a frequency and / or depth of engraving that is continuous at least at a seam of the period of the engraved pattern is provided on the information carrying layer, and a protective layer is provided on the optical variable element layer. Image recording medium creation method. 16. An information carrying layer for carrying at least one selected from identification information and bibliographic information is provided on a support,
An optical change element layer whose reflection wavelength when viewed from a specific angle of the mark is continuous at a seam of the period of the mark pattern is provided on the information carrying layer, and a protective layer is further provided on the optical change element layer. A method for producing an image recording medium, comprising: 17. An information carrying layer for carrying at least one selected from identification information and bibliographic information is provided on a support,
An optical change element layer whose reflection wavelength when viewed from a specific angle of the mark is continuous at a seam of the period of the mark pattern is provided on the information carrying layer, and a protective layer is further provided on the optical change element layer. A method for producing an image recording medium, comprising: 18. An information carrying layer for carrying at least one selected from identification information and bibliographic information on a support,
At least a portion in the width direction of the roll on the information carrying layer has at least an optical conversion effect smaller than the optical conversion effect in the other region, and the optical change effect in which the portion having a small optical conversion effect overlaps the post-transfer image area. An image recording medium producing method, comprising: providing an element layer; and further providing a protective layer on the optical change element layer. 19. The method according to claim 15, wherein the protective layer is a cured transparent protective layer cured by actinic light. 20. The method according to claim 15, wherein the optically variable element layer is a hologram, a diffraction grating, or a relief structure.