JPH0235974B2 - - Google Patents

Description

[Detailed description of the invention]

This invention relates to color diffusion transfer photographic products. Furthermore, the present invention relates to a sheet that is applied to the separating surface of an image-receiving layer-containing support after color diffusion transfer processing. Conventionally, when applying laminated integrated color diffusion transfer photographic materials to photographs for ID cards, etc.
If the photographic material was pasted as is, since there were two supports, it was possible to artificially remove the ID photograph and replace it with another photograph. Therefore, there is a demand for separating the two sheets in advance and pasting only the sheet containing the image-receiving layer. Although the laminated integrated color photographic material exhibits excellent image preservation properties by itself, it has the following drawbacks regarding image preservation properties when peeled off. Firstly, in order to take advantage of the instant nature of color diffusion transfer photographic materials, it is desirable to peel them off within a few minutes after processing; When the support sheet containing the image-receiving layer is peeled off, the pH of the support sheet containing the image-receiving layer is still high, and therefore, if the support sheet containing the image-receiving layer is placed in a humid condition, the image highlight area will be contaminated. Second, because the surface of the support containing the image-receiving layer opposite to the side to be observed is not covered with plastic film or the like, air can easily enter from the emulsion surface, resulting in a color image when irradiated with light. The decrease in concentration becomes greater. Thirdly, an adhesive is used when attaching a support sheet containing an image-receiving layer to a mount such as an identification card, but depending on the type of adhesive, the support sheet containing the image-receiving layer Unwanted dyes in the sheet dissolve, resulting in an undesirable image. Fourth
However, the support sheet containing the image-receiving layer alone curls when exposed to high heat, making it inconvenient to handle the photograph.
In addition, as an ID photograph, the ability to write on the back of the photograph with a pencil or the like is required, but this requirement cannot be met only with a support sheet containing an image-receiving layer. In addition, simply peeling off the support sheet containing the image-receiving layer after processing in a laminated integrated color photograph leaves one's hands dirty, which is also undesirable. The object of the invention is to provide a gluing sheet containing an acidic adhesive layer. It is an object of the present invention to provide a color diffusion transfer photographic product containing a mounting sheet which overcomes the drawbacks listed above. Specifically, an object of the present invention is to provide a laminated sheet that has good color image storage properties even when stored at high humidity and high temperature, has good light resistance, and does not curl. The object of the invention was achieved by using a gluing sheet whose support is coated with an acidic adhesive layer. More preferably, the above objects have been achieved by the following color diffusion transfer photographic products. at least one dye image-providing substance in combination between two supports, at least one of which is transparent;
A laminated integral type color diffusion transfer photographic film unit having two photosensitive silver halide emulsion layers and an image receiving layer, the support and each layer being overlaid, is subjected to development processing, and after the processing, the photographic film unit includes: In a color diffusion transfer photographic product in which the support supporting the image-receiving layer is separated and then a gluing sheet is pasted on the surface opposite to the observation side of the support containing the image-receiving layer, the gluing sheet is acidic. A color diffusion transfer photographic product characterized in that the support comprises an adhesive layer. In the photographic products described above, preferably the support supporting the image-receiving layer is transparent. The support for the gluing sheet can be paper such as Japanese paper, kraft paper, crepe paper, or synthetic paper, or cloth such as cotton, cotton, synthetic fiber, glass, or nonwoven fabric.
Or cellophane, vinyl chloride, polyethylene,
Plastics such as polyester, cellulose acetate, Teflon, natural and synthetic rubber sheets, metals such as lead and aluminum, and composite materials made by appropriately combining the above paper, cloth, plastics, and metals, etc. can be used. The type of preferable support varies depending on the intended use and is difficult to limit. For example, if writing with a pencil or ballpoint pen is required on the back side of the adhesive sheet, a support with writing properties is preferable. In the case of a support that does not originally have writing properties, Japanese Patent Application Laid-open Nos. 56-49261 and 55-17124
No., Utility Model No. 55-26579, Patent Application No. 56-4443, same.
Writability can be imparted by the method described in No. 56-40155. If it is required to extremely avoid the intrusion of oxygen, a support that is difficult to permeate to oxygen, such as metal foil, is preferred. As described above, those skilled in the art can determine which type of support to use depending on the intended use of the photograph. Furthermore, the thickness of the support is also the same as the type, and the user can select the optimal thickness depending on the purpose, such as when using it as a mount (~several millimeters) or when pasting it on an album. The acidic adhesive layer used in the present invention may be made of an adhesive which itself exhibits acidity, or may be made of an adhesive containing an acid substance. As the adhesive, the following can be used. Rubber adhesive mainly made of natural rubber and recycled rubber. Polymers of acrylic esters, vinyl acetate, vinylidene chloride, methacrylic esters,
Acrylic acid adhesives mainly consist of copolymers with vinyl monomers such as acrylic acid and methacrylic acid, or plasticizers are added to vinyl polymers such as vinyl chloride/vinyl acetate copolymers, vinyl acetate polymers, and polyvinyl butyral. It is possible to use a vinyl adhesive or a silicone adhesive mainly composed of rubber-like siloxane and resin-like siloxane. In addition to these adhesives, heat-sensitive or pressure-sensitive adhesives may also be used. The type and amount of adhesive can be determined based on the target adhesive strength. These adhesives are described in "Kobunshi Processing" Special Volume 8 Volume 20 Special Issue "Adhesive" (published June 1971, Kobunshi Publishing Association) and Adhesive Handbook edited by Japan Adhesive Association (1980, Nikkan Kogyo Shimbun). The type, formulation, and manufacturing method are specified in detail. The acidic substance may be a polymeric acid or a monomer acid as long as it has alkali neutralizing ability, such as inorganic acids such as hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, and acetic acid, adipic acid, glutaric acid, malonic acid, and oxalic acid. , p-toluenesulfonic acid, formic acid,
Propylic acid, succinic acid, citric acid, phthalic acid, naphthalenesulfonic acid, acrylic acid and maleic acid can be used. Additionally, polymeric acids such as polyacrylic acid may be blended into the adhesive. Furthermore, in the case of polymers of monomers having an acid function such as acrylic adhesives, the adhesive can be manufactured by controlling the adhesive so that the acid groups are left in an appropriate amount during the manufacturing process. A crosslinked acrylic adhesive has an acrylic acid group as a copolymerization component. This copolymer is obtained by reacting with crosslinking agents such as isocyanates, epoxy resins, melamine resins, urea resins, etherified amino resins, amines and acid anhydrides, and drying at 60-120°C. By reducing the amount added, unreacted acid groups suitable for the purpose of the present invention can remain. The amount of the crosslinking agent added is preferably 0.1 to 0.9 equivalents based on the acid groups of the copolymer. Particularly preferable acidic adhesives are adhesives manufactured by controlling the polymerization of cross-linked acrylic adhesives so that acid groups remain appropriately, and acid substances do not precipitate on the surface even after a long period of time. There is no. The amount of acid has a large effect on the storage stability of the image, but if it is too low, the neutralizing ability will be insufficient, and when stored in high temperature and high humidity conditions, stains will occur in the highlighted areas and the image will be seriously damaged. . Furthermore, if the amount is too high, the pH will drop too much, resulting in a decrease in light resistance. The preferred amount of acid is 0.005 to 0.1 g equivalent/ ^m2 . A more preferable range of acid amount is 0.01 to 0.07 g equivalent/m ² . The adhesive layer of the gluing sheet of the present invention may contain an antioxidant, if necessary, in order to further improve light fastness. As antioxidants, hindered phenols (2,6-di-t-
Butyl-4-methylphenol 2,2'-butylidene-bis-(-6-tert-butyl-4-methylphenol), 4,4'-thiobis(3-methyl-6
-t-butyl-phenol), phenyl-β-naphthylamine, N,N'-di-secbutyl-p-phenylenediamine, phenothiazine, N,N'-
diphenyl-p-phenylenediamine, d,l-
α-tocopherol, 2,5-t-hexyl-4
- Other antioxidants that can be contained in the adhesive layer, such as methoxyphenol and 6,6'-dihydroxy 4,4,4',4',7,7'-hexamethyl-bis-2,2'-spirochroman. Most of the known ones can be used. The form of the adhesive sheet of the present invention varies depending on its intended use, but basically the following two types are useful. The first type is a type in which an acidic adhesive layer is coated on a support and a release paper is attached. The second type is a type in which a release paper is also placed on the opposite side of the acidic adhesive layer of the support of the first type, and in the second type, it is necessary to use additional adhesive when pasting it to the backing paper. do not have. The release paper used for this purpose is
A base material such as paper, plastic film, or composite film coated with a release agent having various release properties such as silicone can be used. The adhesive sheet of the present invention is peeled off a few minutes after processing the laminated integral type color diffusion transfer photographic film unit and then applied. However, in order to improve the adhesion of the adhesive layer, the support containing the separated image-receiving layer is once removed. Preferably, it is dried.
The bonding time is preferably 3 to 5 minutes at room temperature to take advantage of the instant nature. Laminated integrated color diffusion transfer photographic film units are already widely known in the industry, such as U.S. Pat.
Same 3415646, Same 3578540, Same 3573043, Same 3615421,
Same 3594164, Same 3594165, Same 3620724, Same 3635707,
3993486, British Patent 1269805, 1330524, Special Publication No. 49-21660, Special Publication No. 49-21661, Belgian Patent
757959, 757960, and West German patent 2019430. For example, Belgian patent No. 757960 describes a transparent support with an image receiving layer and a substantially opaque light reflecting layer (e.g.
a light-sensitive sheet having at least one light-sensitive silver halide emulsion layer in combination with a dye image-providing substance ( _two TiO layers and a carbon black layer) and an opaque cover sheet (with an integrated neutralization system); One end of the photosensitive sheet is fixed, and after exposing the photosensitive sheet, the two sides are stacked, a processing composition is spread between the two, development is performed in a bright place, and the color image transferred to the image-receiving layer is observed through the transparent support. A photographic film unit is disclosed. Belgian Patent No. 757959 is similar to Belgian Patent No. 757960, but differs in that the photosensitive sheet and the cover sheet are kept fixed on three sides in advance by using a transparent cover sheet, and the cover sheet is After exposing the image through
A photographic film unit is disclosed in which a developing solution containing an opacifying agent is distributed from the other side, the developing treatment is also carried out in a bright place, and the color image transferred to the image-receiving layer is observed through a transparent support. Color diffusion transfer photographic products that can be used in the present invention are commercially available, and specifically include:
FI-10 (Fuji Photo Film Co., Ltd.), PR-10 (Eastman Kodatsu Co., Ltd.) and SX-70 (Polaroid Co., Ltd.)
Examples include products marketed under the trademark . Other materials for color diffusion transfer photography used in the present invention will be described. The two supports used in the present invention, at least one of which is transparent, must not undergo significant dimensional changes during the development process. Examples of the support include cellulose acetate film, polystyrene film, polyester film, such as polyethylene terephthalate film, and polycarbonate film, which are used in ordinary photographic materials, and the thickness of the support is preferably 50 to 300 μm. is preferably 75 to 180 μm. The image-receiving layer used in the present invention is preferably a hydrophilic colloid layer containing a polymer mordant. The polymer mordants used in the present invention are polymers containing secondary and tertiary amino groups, polymers having nitrogen-containing heterocyclic moieties, polymers containing these quaternary cation groups, etc., and have a molecular weight of 5,000 to 200,000, particularly 10,000 to 10,000. 50,000. For example, US Patent No. 2548564, US Patent No. 2484430, US Patent No.
Vinylpyridine polymers and vinylpyridinium cationic polymers disclosed in No. 3148061 and No. 3756814; dialkylamino group-containing polymers disclosed in No. 2675316;
Aminoguanidine derivatives disclosed in No. 2882156; No. 3625694, No. 3859096, No. 4128538;
Polymer mordants capable of crosslinking with gelatin, etc., as disclosed in British Patent No. 1277453; aqueous sol-type mordants disclosed in U.S. Patent Nos. 3958995, 2721852, and 2798063;
The water-insoluble mordant disclosed in No. 3898088;
No. 3642482, No. 3488706, No. 3557066, No.
No. 3271147, No. 3271148, JP-A-50-71332,
No. 53-30328, No. 52-155528, No. 53-125,
The mordant disclosed in the specification of 53-1024 can be mentioned. The white reflective layer used in the present invention may be a layer provided in advance or may be formed using a processing solution.In short, the image formed in the color diffusion transfer system is viewed using reflected light. This layer is provided to give white color to the non-image area so that the color can be colored, and a pigment is used in the layer to give white color. White pigments for the white reflective layer include barium sulfate, zinc oxide, barium stearate, silver flakes, silicates, alumina, zirconium oxide,
Zirconium sodium sulfate, kaolin, mica, titanium dioxide, etc. are used. Further, these may be used alone, or may be mixed to the extent that a desired reflectance can be obtained. The photosensitive silver halide emulsion used in the present invention is
A hydrophilic colloidal dispersion of silver chloride, silver bromide, silver chlorobromide, silver iodobromide, silver chloroiodobromide, or a mixture thereof, and the halogen composition varies depending on the purpose of use and processing conditions of the photosensitive material. selected. The grain size of the silver halide used may be a normal grain size or a fine grain size, but preferably has an average grain size in the range of about 0.1 micron to about 2 micron.
Furthermore, depending on the intended use of the photosensitive material, it is desirable that the particle diameter be uniform. The crystal shape of the particles used may be cubic, octahedral or mixed crystal. These silver halide emulsions are described, for example, in "Chimie Photographique" by P. Glafkides [2nd edition, 1957; Paul
Montel.Paris) can be made by conventional methods such as those described in Chapters 18 to 23. The photosensitive silver halide emulsion used in the present invention is a natural sensitizer contained in gelatin, a sulfur sensitizer such as sodium thiosulfate or N,N,N'-triethylthiourea; a thiocyanate complex salt of monovalent gold; , a gold sensitizer such as a thiosulfate complex; or a reduction sensitizer such as stannous chloride or hexamethylenetetramine, and is preferably chemically sensitized by heat treatment. Emulsions that easily form latent images on the grain surfaces can also be used in the present invention; however, US Pat.
Same 3761276, Same 3206313, Same 3317322, Same 3761266,
Same 3850637, Same 3923513, Same 3736140, Same 3761267,
It is preferable to use an internal latent image type direct reversal emulsion as described in No. 3,854,949. The photosensitive silver halide emulsion used in the present invention is
It can be stabilized with conventional stabilizers.
Furthermore, the photosensitive silver halide emulsion used may contain a sensitizing compound such as a polyethylene oxide compound. The photosensitive silver halide emulsion used in the present invention is
Spectral sensitization may be performed as desired. Useful spectral sensitizers include cyanines, merocyanines, holoporacyanines, styryls, hemicyanines, oxanols, hemioxanols, and the like. A specific example of a spectral sensitizer is the above-mentioned P.
Chapters 35-41 of Glafkides' book and FM Hamer's "The Cyanine"
And (and) Related
Compounds” (Interscience). In particular, cyanines in which the nitrogen atom of the basic heterocyclic nucleus is substituted with an aliphatic group (e.g. an alkyl group) having a hydroxyl group, a carboxyl group or a sulfo group, e.g.
Those described in Nos. 2503776, 3459553, and 3177210 are particularly useful in the practice of the present invention. Dye image-providing materials for diffusion transfer methods used in combination with the light-sensitive silver halide emulsion used in the present invention include, for example, U.S. Pat.
No. 3443939, No. 3443940, No. 3658524, No. 3698897,
No. 3725062, No. 3728113, No. 3751406, No. 3929760,
No. 3931144, No. 3932381, British Patent No. 840731,
No. 904364, No. 1038331, West German Patent Publication (OLS)
No. 1930215, No. 2214381, No. 2228361, No. 2242762,
No. 2317134, No. 2402900, No. 2406626, No. 2406653,
JP-A-49-114424, 49-126332, 48-33826
No. 49-126331, 50-115528, 51-113624
No. 51-104343, No. 52-8827, No. 52-106727,
No. 51-114930, No. 53-23628, JP-A No. 53-143323
No. 53-149328, No. 54-8627, No. 54-65034, etc. can be used, among which compounds are initially non-diffusible, but after a redox reaction with the oxidation product of the developing agent. It is preferable to use a type of dye image-providing substance that is cleaved to release a diffusible dye (hereinafter abbreviated as DRR compound). Specific examples of DRR compounds include those described in the above-mentioned patent specifications, as well as magenta dye image-forming substances such as 1-hydroxy-2-tetramethylenesulfamoyl-4-[3'-methyl-4'- (2″−
Hydroxy-4″-methyl-5″-hexadecyloxyphenylsulfamoyl)-phenylazo]-naphthalene, 1- as yellow dye image-forming material
Phenyl-3-cyano-4(-3′-[2″-hydroxy-4″-methyl-5″(-2,4-di-t-pentylphenoxyacetamino)-phenylsulfamoyl]phenylazo }-5 pyrazolone, etc. When using the DRR compound in the present invention, any silver halide developer can be used as long as it can cross-oxidize the DRR compound.
Such a developer may be included in the alkaline processing composition (processing element) or in an appropriate layer of the photosensitive element. Examples of developing agents that can be used in the present invention are as follows. Hydroquinone, aminophenol, e.g.
N-methylaminophenol, 1-phenyl-3
-pyrazolidone, 1-phenyl-4,4-dimethyl-3-pyrazolidone, 1-phenyl-4-methyl-4-oxymethyl-3-pyrazolidone, 1-
Tolyl-4-methyl-4-oxymethyl-3-pyrazolidone, N,N-diethyl-p-phenylenediamine, 3-methyl-N,N-diethyl-p-
phenylenediamine, 3-methoxy-N-ethoxy-p-phenylenediamine, etc. Among those listed here, black and white developers are particularly preferred, as they generally have properties that reduce stain formation in the image receiving layer (mordant layer). In carrying out the present invention, when a DRR compound is used and a so-called ordinary emulsion is used which undergoes development depending on the amount of exposure, the transferred image will be a negative image and the residual image will be a positive image. On the other hand, if the photosensitive silver halide emulsion is a so-called direct reversal silver halide emulsion (for example, an internal latent image emulsion or a solarization type emulsion), which is developed in unexposed areas, the film
A positive image is obtained at the image receiving site of the unit. Regarding the solarization type emulsion mentioned above,
“The Theory of the Photographic” edited by Mees
Process” (1942: McMillan Co. New York)
Those listed on pages 261-297 are useful. For its preparation, see for example the British patent
No. 443245, No. 462730, U.S. Patent No. 2005837, U.S. Pat.
No. 2541472, No. 3367778, No. 3501305, No.
It is described in Nos. 3501306 and 3501307, etc. The internal latent image type direct positive emulsion advantageously used in the present invention is described in the above-mentioned US patent specifications and the like. The direct reversal photographic emulsions used in this invention can be processed after image exposure in the presence of a fogging agent or after image exposure and during surface processing as described in U.S. Pat. No. 2,456,953 (Knott and Stevens). A positive image can be obtained directly by applying a uniform exposure (high-intensity short-time exposure, i.e., shorter than 10 ^-2 seconds, or low-intensity long exposure) and fogging. It is preferable to use a fogging agent because the degree of fogging can be easily adjusted. The fogging agent may be contained in the light-sensitive material or may be added to the developer, but it is preferable to contain it in the light-sensitive material. Fogging agents for this type of emulsion include hydrazines described in U.S. Pat. No. 2,588,982 and U.S. Pat.
38164, U.S. Patent No. 3734738, U.S. Patent No. 3719494, U.S. Pat.
Typical examples include quaternary salt compounds described in No. 3615615 and acylhydrazinophenylthiourea compounds described in German patent application (OLS) No. 2635316. The amount of fogging agent used herein can vary widely depending on the desired result. If a fogging agent is added to the developer, it is generally about 0.05 to 5 g (preferably 0.1 to 1 g) per developer. When a fogging agent is included in any layer of a photosensitive material, it is also effective to make the fogging agent diffusion resistant. An effective means for imparting diffusion resistance is to bond a ballast group commonly used in couplers to a fogging agent. Furthermore, U.S. Patent Nos. 3,227,551 and 3,227,554;
Transfer positive images can also be obtained by a DIR reversal emulsion system as described in British Patent No. 3364022 or a reversal emulsion system using dissolution physical development as described in British Patent No. 904364. US patent
3227550 and 3227552, UK patent 1330524
A series of processes for obtaining color diffusion transfer images are described in this issue. When a diffusible dye-releasing coupler is used in the present invention, color developing agents include U.S. Pat. No. 3,227,552;
Paraphenylenediamine derivatives described in No. 2559643 and No. 3813244 are representative. Furthermore, p-amino-phenol derivatives such as those described in JP-A-48-26134 can be advantageously used. Such color developing agents are preferably present in an alkaline developing processing composition contained in a breakable container. The color developing agent may also be contained in a separate layer in the negative portion of the film unit, or it may be present in the same layer as the silver halide emulsion layer. The development treatment in the present invention is carried out using a treatment composition commonly used in diffusion transfer methods. The processing composition used in the present invention is a liquid composition containing the processing components necessary for developing a silver halide emulsion and forming a diffusion transfer dye image, and the solvent is mainly water and methanol is also used. may also contain hydrophilic solvents such as methyl cellosolve. The processing composition maintains the pH necessary for development of the emulsion layer and removes acids generated during the development and dye image formation processes (e.g., hydrohalic acids such as hydrobromic acid, carboxylic acids such as acetic acid). Contains a sufficient amount of alkali to neutralize acids (acids, etc.). Examples of alkalis include alkali metal or alkaline earth metal salts such as lithium hydroxide, sodium hydroxide, potassium hydroxide, calcium hydroxide dispersion, tetramethylammonium hydroxide, sodium carbonate, trisodium phosphate, diethylamine, or amines. is used, preferably having a pH of about 12 or higher at room temperature, especially
It is desirable to contain caustic alkali at a concentration such that the pH is 14 or higher. More preferably, the treatment composition contains a hydrophilic polymer such as high molecular weight polyvinyl alcohol, hydroxyethyl cellulose, sodium carboxymethyl cellulose. These polymers are added to the treatment composition at room temperature.
Pois or more, preferably several hundred (500-600)
It provides a viscosity of approximately 1,000 poise, which not only facilitates the uniform spread of the composition during processing, but also provides a non-flowing property when the processing composition is concentrated due to the migration of aqueous solvent to the photosensitive element and image-receiving element during the processing process. It forms a protective film that helps the film units to be integrated after processing. This polymer film can also be used to inhibit further migration of colored components to the image-receiving layer after the formation of the diffusion-transferred dye image is substantially completed, thereby preventing changes in the image. The processing composition may also contain light-absorbing substances such as TiO ₂ , carbon black, PH indicator dyes, and U.S. Pat. It may be advantageous in some cases to contain desensitizers such as those described in No. Furthermore, a development inhibitor such as benzotriazole can be added to the processing liquid composition. The above treatment composition is described in US Pat. No. 2,543,181,
No. 2643886, No. 2653732, No. 2723051, No.
It is preferable to use it in a rupturable container as described in No. 3056491, No. 3056492, No. 3152515, etc. Preferred embodiments of the present invention are listed below. 1. In the claims, the gluing sheet is a gluing sheet in which an adhesive layer is coated on one side of a support, and a release paper is pasted thereon. 2. In the scope of the claims, the adhesive sheet is an adhesive sheet in which an adhesive layer is coated on both sides of a support, and a release paper is pasted on both adhesive layers to form an integrated adhesive sheet. 3. In the claims, the support of the cruciform sheet is synthetic paper. 4. In the claims, the acidic adhesive is a crosslinked acrylic adhesive. 5 In embodiment 4, the crosslinked acrylic adhesive contains unreacted acrylic acid. 6 In the claims, the acid amount is 0.01 to 0.07
g5 equivalents/ ^m2 . The details of the present invention will be explained with reference to the following examples, but the present invention is not limited thereto. Example 1 (comparative example) Manufacturing method of acrylic adhesive Butyl acrylate 94 parts Acrylic acid 31 parts Benzol 350 parts Benzoyl peroxide 0.25 parts Heat polymerization was carried out at 60°C for 8 hours with stirring under a nitrogen stream, and the polymerization rate was determined. 93-95% polymer viscosity (viscosity
5000cp). Add diisocyanate to the polymer in an equal amount to acrylic acid and mix uniformly, then apply 25g/ ^m2 of the mixture to high quality paper (80μ thick).
Crosslinking is achieved by a drying step of 15 minutes at 130°C. The acid function of this adhesive is 0.001 g equivalent/m ² . For the release paper, dimethylpolysiloxane was coated at 1.0 g/m ² on high-quality paper (80 μm thick) and dried and cured. Example 2 (Invention) The release paper is the same as in Example 1. A gluing sheet was prepared in the same manner as in Example 1, except that polypropylene foamed synthetic paper was used instead of high-quality paper and acrylic acid (2.16 g/m ² ) was added to the polymer during coating on the support. Example 3 (invention) Support and release paper are the same as Example 2, Example 1
A gluing sheet was prepared in the same manner as in Example 1, except that 0.5 equivalent of diisocyanate based on acrylic acid was added to the same polymer. The acid function of this adhesive is
0.5g equivalent/ ^m2 . Example 4 To see the effect of the amount of acid in the crucifixion sheet,
The coating amount of the adhesive prepared in Example 3 was 10 g/m ² ~
A sample was prepared in which the concentration was changed to 70g/m ² . (4-1 to 4-4) After sensitometric exposure of FI-10 instant film (Fuji Photo Film Co., Ltd.) through a continuous tone wedge, development processing was performed.
It was separated into sheets, and the sheet with the artist was dried in a hairdryer. After completion of drying with a dryer, Examples 1 to 3 and 4-1 to 4-4
The crucifixion sheet was glued on. Experiments were conducted at 25°C. The sample prepared by the above method was left for 3 days at a temperature and humidity controlled at 45° C. and 80%, and the increase in the minimum concentration of yellow pigment (D ^B min) was measured.

[Table] In addition, the sample prepared using the above method was
After irradiating at 3000 lux for 28 days, we measured the density after irradiation of the area where the cyan dye density was 1.0 before irradiation.
The fastness of the dye was evaluated. The results are shown in Table-2.

[Table] From Table-2, 2 to 3 of the present invention, and 4-1 to 4
It can be seen that -4 has excellent light resistance under moist heat conditions. Example 5 (Comparative Example) The "FI-10" instant film developed in Example 4 was peeled off 3 minutes after development and dried with a dryer. As in Example 5, 100,000 xenon lights
lux for one day to examine light resistance.

[Table] It can be seen that the light resistance is improved compared to the comparative example. Further, when the sample of Example 5 was left for 3 days at 35° C. and 80%, the stain in the highlight areas increased and the image quality significantly deteriorated.

Claims (1)

[Claims] 1 having at least one light-sensitive silver halide emulsion layer combined with a dye image-providing substance and an image-receiving layer between two supports, at least one of which is transparent, the supports and each layer being superimposed. A laminated integral type color diffusion transfer photographic film unit is developed, and the photographic film unit after processing is separated from at least the support supporting the image-receiving layer, and then the support including the image-receiving layer is observed. A color diffusion transfer photographic product comprising a pasting sheet pasted on one side and the opposite side, wherein the pasting sheet is a support containing an acidic adhesive layer.