JPH04163550A - Photographic image recording body - Google Patents

Abstract

PURPOSE:To secure such a photographic image recording body that is recordable in a simple way and excellent in stability in a photographic image by preventing a part, where the photographic image of image recording material is recorded, from sticking fast to a bonding layer of laminate material directly. CONSTITUTION:An image recording material 1 consists of a supporter 2 and an image recording layer 3, and a laminate material 4 is composed of a bonding layer 5 and another supporter 6. The image recording layer (mid layer and/or upper layer) is provided with at least a photographic image 7, and a letter image or the like is recorded at need. There is no adhesive material for a laminate material 4 in a part 8 made contact with the image recording part 7, therefore this recording part 7 is in no case directly stuck fast to the bonding layer. With this constitution, such a photographic recording body that is excellent in preservability is securable in a simple method including thermal transferring or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a photographic image recording medium, and more particularly to a photographic image recording medium with good image durability.

The photographic image recording body of the present invention can be used, for example, as an authentication identification card (
It can be used particularly well as an ID card.

[Background of the invention]

Traditionally, authentication identification carts, such as employee cards, tallyt carts, driver's licenses, and traffic permits, have been provided with predetermined information such as address,
Fill in bibliographic information (information) such as name and number by printing, and attach identification information such as a photograph to confirm the person. ing.

However, conventional products of this type have the problem of being easily tampered with, such as forgery or alteration. In addition, these items have poor durability against friction and are often contaminated or damaged while being carried around all the time. Recently, in order to improve these defects, a photosensitive material in which a photosensitive emulsion such as a silver halide emulsion is coated on a support plate has been used, and not only handwritten information but also a photograph of a person's face can be printed onto this photosensitive material. Various methods have been devised to prevent tampering, such as carts whose surfaces are coated with resin film and heat sealed, and both sides of the card are laminated with resin film. Tachino is known.

However, in the methods using these photosensitive materials, images are formed by processing or liquid processing, which is complicated and requires a large apparatus for forming images. As a method to improve these shortcomings, a patent application
No. 3-131939 and No. 63-293977 disclose that an image is formed in a thermoplastic resin by a thermal transfer method or a heat development method, and this resin is laminated with a suitable laminating material to create an image, especially for ID cards. A method of forming an image has been proposed.

If this method is followed, it is possible to obtain an image with simple and trial processing, but it has the problem that the image blurs when laminating after image formation and when saving the laminated image. ing.

[Purpose of the invention]

In view of the above-mentioned problems, an object of the present invention is to provide a photographic image recording medium that can be recorded using a simple method and has excellent stability of photographic images.

[Structure of the invention]

The above object of the present invention is to provide an image recording material having at least an image recording layer for recording an image on a support, and a laminate material comprising a support and an adhesive layer closely adhered to the image recording layer of the recording material. This is achieved by a photographic recording body formed by laminating a plurality of laminate materials, characterized in that the portion of the image recording body on which the photographic image is recorded is not in direct contact with the adhesive layer of the laminate material.

Hereinafter, preferred embodiments of the present invention will be described in detail.

1 and 2 show the structure of a photographic image recording medium. Reference numeral 1 denotes an image recording material, which is composed of a support 2 and an image recording layer 3. FIG.

Note that the support may also serve as an image recording layer.

4 is a laminate material, which is composed of an adhesive layer 5 and a support 6.

The image recording layer (in the layer and/or on the layer) has at least a photographic image 7, and a character image or the like is recorded as necessary.

In the present invention, a photographic image refers to a multi-value recorded image with 32 or more gradations.

In FIG. 1, the portion 8 that is in contact with the photographic image recording section 7 does not have the adhesive material of the laminate material 4, so that the photographic image recording section 7 does not come into direct contact with the adhesive layer.

Whether transparent supports, opaque supports, etc. can be used as supports for image recording materials and laminate materials;
At least one of both supports is a transparent support.

Examples of transparent supports and opaque supports include films such as polyethylene terephthalate, polycarbonate, polystyrene, polyvinyl chloride, polyethylene, and polypropylene, and pigments such as titanium oxide, barium sulfide, calcium carbonate, and talc in these supports. Baryta paper, RC paper laminated with thermoplastic resin containing pigment on paper, cloth, glass, metals such as aluminum, etc., and electron beam containing pigment on these supports. Examples include a support coated with a curable resin composition and cured, and a support coated with a pigment-containing coating layer on these supports.

Preferred supports are white plastic film supports (eg polyethylene terephthalate, polycarbonate, polyvinyl chloride), particularly polyvinyl chloride supports.

Further, an IC device or a magnetic recording layer may be provided in the support or between the support and the image recording layer or the support and the laminate layer. Furthermore, paper may be pasted to the back side of the support to provide writability.

The image recording layer is preferably formed from a thermoplastic resin, particularly a polymer having a glass transition temperature of 40 to 250°C, and a polymer to which a plasticizer is added to impart thermoplasticity to the polymer. Typical polymers include polysretin, polyvinyl butyral, polyvinyl chloride, polyesters (e.g. polyethylene terephthalate), polycarbonates (e.g. bisphenol A1 polycarbonate), and polyacrylates (e.g. bisphenol A1 polycarbonate).
For example, poly(n-butyl acrylate) and the like can be mentioned.

Further, it may be a blend polymer in which two or more of these polymers are used in combination, or a copolymer such as a copolymer of vinyl chloride and an acrylic acid ester, or a copolymer of vinyl chloride and vinyl oxide.

Particularly preferred polymers include JP-A-59-223
Polyvinyl chloride described in No. 425 and JP-A-60-1.
Examples include polymer bonates and polyesters containing plasticizers as described in No. 9138. These polymers can also be used as a support, and in that case, the support may be formed from a single layer or from multiple layers.

Next, the adhesive layer will be explained. The adhesive layer is a layer consisting of at least an adhesive, and examples of the adhesive include, for example, Chemistry Handbook, Applied Edition, Revised Third Edition (Maruzen Publishing, 1980), Nos. 897-90.
3 and Technical Series "Adhesion J, supervised by Akira Yamaguchi, 3rd Department (Asakura Shoten, 1981), pages 20 to 38. As adhesives preferably used in the present invention, hot melt adhesives (e.g. (ethylene-vinyl acetate copolymer, polyethylene, polyamide, polyester resin, etc.), thermoplastic resin adhesives (e.g. vinyl acetate-based, chloroprene-based, acrylic emulsion-based, etc.), rubber-based adhesives (chloroprene rubber-based, etc.), thermosetting Examples include natural resin adhesives (urea resin, melamine resin, phenol resin, epoxy resin, polyurethane resin, etc.), photocurable resin adhesives, and natural adhesives (gelatin, starch, glue, etc.).

FIG. 3 shows another embodiment of the invention.

Either the adhesive layer 5 is present on the entire area on the laminate material, or a transparent material 9 is provided between the photographic image recording section 7 and the adhesive layer 5, and the photographic image recording section 7 and the adhesive layer 5 are directly connected to each other. It is not closely attached to.

The transparent material 9 is preferably a plastic film (eg, polyester, polycarbonate, polyvinyl chloride, etc.) having a thickness of 1 to 30 μm.

Next, a method of forming a photographic image will be explained.

As the photographic image forming method, a method using a heat-developable photosensitive material or a method using a heat-sensitive transfer material is preferably used.

A method using a heat-developable photosensitive material is to apply a photosensitive layer consisting of at least a photosensitive silver halide, an organic silver salt, a reducing agent, a dye-providing substance, and a binder on a support, and apply the photothermographic material to an image according to image information. The image recording layer and photosensitive layer of the image recording material are overlapped and heated (80 to 150°C/
(10 seconds to 2 minutes), the dye formed in the image-wise manner is transferred to the image-recording layer, thereby forming a photographic image.

As a method of using a heat-sensitive transfer material, a heat-sensitive transfer material consisting of a heat-diffusible dye (sublimable dye) and a binder is layered on a support with the image recording layer of an image recording body, and a thermal head or laser is applied depending on the image information. A photographic image is formed by heating the photosensitive material with, for example, a heating agent, and transferring the dye to the image recording layer according to the heating energy.

Image information such as characters other than photographic images may be recorded using the above method, but a heat-sensitive transfer material having a heat-melting transfer layer containing a coloring material (e.g. carbon blank) on a support may be used to record information. It can also be recorded by heating it.

The image recording material on which a photographic image and, if necessary, a character image have been recorded is brought into close contact with a laminate material and heat-treated.

As a heating method, an internal heating method (for example, a method using ultrasonic waves, high frequency waves, or microwaves) or an external heating method (for example, a method using a heated roller, infrared rays, heat seal, laser, etc.) can be used.

In addition, the conditions for laminating are a heating temperature of 70 to 180
C1 heating time is preferably 0.1 to 30 seconds, and heating may be performed if necessary.

〔Example〕

The effects of the present invention will be illustrated by specific examples below.

Example A thermal transfer recording sheet was prepared by coating a polyethylene terephthalate film with a thickness of 4.5 μm with a pigment layer containing the following yellow, magenta, and cyan pigments, and a polyvinyl chloride coating (10 g/m2) as an image recording layer. ') An image recording body consisting of a white cured vinyl chloride resin card was placed facing each other so that the dye layer and the image recording layer overlapped, and a thermal transfer printer (@Hitachi, VP-50) was used to apply image information. An image was recorded on a part of the image recording medium.

Note that nitrocellulose was used as the binder for the heat-sensitive transfer recording sheet.

The amount of each pigment applied was 0.4 g/m2. Macenta 0.3g/m2. Cyan was 0.6 g/m'' and each binder layer was 0.4 g/m'.

Yellow dye c4Hs (n) Below is the margin macenta dye cyan dye C2H-C2HI Subsequently, on a 45 μm polyethylene terephthalate film, 5 parts by weight of EV210 (manufactured by DuPont Mitsui Chemicals),
A 1 μm layer consisting of 95 parts by weight of paraffin wax, 67 parts by weight of carphone black (30% dispersion), 75 parts by weight of phenolic resin (Tamanol 526, manufactured by Arayo Kagaku), 5 parts by weight of EV 40Y (manufactured by DuPont Mitsui Chemicals). A character image was recorded using a melt-type heat-sensitive transfer recording notebook formed by laminating layers of 1 .mu.m thick in parts by weight.

An adhesive layer made of ethylene-vinyl acetate copolymer with a thickness of 20 μm is placed on the support of a polyethylene terephthalate film (thickness: 50 μm) on the image recording material on which photographic images and character images are recorded (however, in the area overlapping with the photographic image forming area) (No adhesive layer was applied.) Laminated materials were stacked together and heat-treated to laminate the photographic image record.

In addition, an image recording material on which photographic images and character images produced in the same manner as above are recorded is laminated using a laminated material having an adhesive layer on the entire surface of the support. I got 2 or 3.

When laminating photographic image recording material 3, a 6 μm thick polyethylene terephthalate film was placed on top of the photographic image recording portion so that the photographic image recording portion and the adhesive layer did not come into direct contact with each other.

When the obtained photographic image recording bodies-1, 2, and 3 were left for 4 days at 70°C, no image bleeding was observed in photographic image recording bodies-1 and 3, or photographic image recording body-2
(Comparative Example), there was significant image blurring in the photographic image area.

〔Effect of the invention〕

As described above, according to the present invention, a photographic recording medium having excellent preservability can be obtained by a simple method such as thermal transfer.

Claims (1)

[Claims] A photograph obtained by laminating, on a support, a laminate material consisting of an image recording material having at least an image recording layer for recording an image, an adhesive layer closely adhered to the image recording layer of the recording material, and a support. 1. A photographic image recording body characterized in that a portion of the image recording material on which a photographic image is recorded is not in direct contact with an adhesive layer of the laminate material.