JPH04128753A - Image receiving element for silver salt diffusion transfer method - Google Patents

Abstract

PURPOSE:To lessen the curling of a photographic print by specifying the amt. of the org. solvent remaining on a side having a cellulose ester and/or regenerated cellulose ester before the above element is developed. CONSTITUTION:The amt. of the org. solvent remaining on the side having the cellulose ester and/or regenerated cellulose ester is confined to <=1mg/m<2>. Such reduction of the amt. of the remaining org. solvent is attained by minimizing the high boiling solvent used for a coating soln. to the amt. at which orange peels and unequal stripe are prevented and/or by selecting an adequate drying temp., drying time and drying air quantity. A large amt. of the org. solvent evaporates from coated films and is removed to the outside of the system in coating and drying stages but bases and coated films receive prescribed tension in this stage and, therefore, the curling arising from the splashing of the solvent to the outside of the system is corrected by the tension and is consequently as small as negligible. The curling of the print is lessened in this way.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a silver salt diffusion transferable photographic light-sensitive material, and in particular to an image receiving element for a silver salt diffusion transfer method, and more particularly, to an image receiving element for a silver salt diffusion transfer method. It is about improving the. [Prior Art] Diffusion transfer photography using silver salts such as silver halide is well known. In this type of photography, a light-sensitive element containing an exposed silver halide photographic emulsion and an image-receiving element containing silver precipitation nuclei are superimposed, and silver halide is formed between these two elements in the presence of a developing agent. It is known to obtain a positive silver image directly on an image-receiving element by applying and treating it with an alkaline processing solution containing a solvent. In this method, an unexposed silver halide emulsion in a light-sensitive element is dissolved by a silver halide solvent and begins to dissolve as a silver ion complex into an alkaline processing solution, and is transferred to an image-receiving element, where silver precipitation nuclei are formed. A positive image is directly formed by precipitation as a silver image. The image receiving elements used in this method are typically coated with gelatin, carboxydimethyl cellulose, hydroxy Ethyl cellulose, regenerated cellulose, polyvinyl alcohol, sodium alginate, starch, gum arabic,
An image receiving layer containing silver precipitation nuclei selected from metal sulfides such as palladium sulfide, nickel sulfide, and silver sulfide, or noble metal colloids such as gold, silver, and palladium, in an alkali-permeable polymer binder selected from colloidal silica etc. It is made by providing Many inventions have been made and patent applications have been filed to improve these image receiving elements. Among these methods, a method using regenerated cellulose as a binder for an image receiving element is known. Specifically, U.S. Pat. No. 3,179.517 discloses that an acetyl cellulose film is hydrolyzed with alkali to form a regenerated cellulose layer, and then the regenerated cellulose layer is immersed in a gold salt solution and a reducing agent solution to form a regenerated cellulose layer. A method of forming an image-receiving element by reacting gold colloids to silver precipitate nuclei in a method is described. Furthermore, Japanese Patent Publication No. 44-32754 discloses that alkali-impermeable polymer material is impregnated with silver precipitation nuclei by vacuum evaporation, then dissolved in a solvent that dissolves the polymer material, applied to a support, dried, and then Image-receiving elements are described that are made by hydrolyzing the surface layer of this polymer layer to render it permeable to alkali. Furthermore, Japanese Patent Publication No. 46-43944 describes a method for preparing an image receiving element by dispersing silver precipitation nuclei in acetylcellulose, coating it on a support, and then hydrolyzing the acetylcellulose to make regenerated cellulose. has been done. Furthermore, U.S. Pat. No. 4,163,816 describes an image-receiving element prepared by hydrolyzing acetylcellulose with acid in a solution to convert it into acetylcellulose with a low degree of acetylation and coating it on a support. . In addition, diffusion transfer photography is generally different from normal photography;
Since the temperature at which the image is photographed becomes the developing temperature, a mechanism is required in which the developing time is long at low temperatures and short at high temperatures. To meet this requirement, a neutralization layer for neutralizing the alkali in the developer and a neutralization timing layer for controlling the neutralization rate of the alkali depending on the temperature are commonly used. Cellulose esters are also often used, and are sometimes used as binders for neutralizing layers. Thus, acetylcellulose or regenerated cellulose is a well-known and very useful material as a binder for image-receiving elements for silver salt diffusion transfer. The image receiving element for the silver salt diffusion transfer method also requires a light shielding function to create a dark room during development. It is generally known that in peel-off type image-receiving elements for silver salt diffusion transfer, a light-shielding function is incorporated into the support or a light-shielding function is incorporated into the bank layer. In other words, things can be made in a variety of ways and easily by hand.
Since supports incorporating a light-shielding function are relatively difficult to obtain, it can be said that it is more convenient to incorporate the light-shielding function into the back layer. Regarding the bank layer having a light shielding function, for example, U.S. Patent 3
, 752, 692 or JP-A-6148845. Black substances such as carbon black, which absorb light over the entire visible light range, are particularly useful as light-shielding agents, but black materials may also be created by mixing monochromatic dyes such as yellow, magenta, and cyan. Both water-soluble polymers and water-insoluble polymers are useful as a binder to be dispersed or added, but it is preferable that the back layer also has the function of writing with a pencil, etc., and black is not desirable from an aesthetic point of view if it is the outermost layer. For this reason, it is desirable for commercial products to further coat a layer in which a white pigment is dispersed on top of the black layer. For this purpose, it is easier to disperse or add a light-shielding agent or a white pigment to a water-soluble polymer, especially gelatin, and apply two or more layers at the same time. It is also industrially advantageous. (Intelligence B to be Solved by the Invention) In this way, a silver salt in which cellulose ester or regenerated cellulose is coated on the front side (the side in contact with the developer) of the image-receiving element, and a layer containing gelatin is coated on the back side. However, the image-receiving element for the diffusion transfer method has the drawback that the front material and the back material have large differences in humidity and temperature, especially in the degree of expansion and contraction depending on temperature, so they tend to curl, making it difficult to maintain the flatness of the print. Cheap. Further, in an image receiving element using cellulose ester, the extent to which the ester is hydrolyzed changes depending on the alkali of the developer and the developing developer as well as the print storage environmental conditions and time. In the case of acetylcellulose, acetic acid is released by hydrolysis with an alkali, so the volume decreases compared to the state without hydrolysis, so it tends to shrink. [Purpose of the Invention] Curling of photographic prints may be inconvenient for observation, it may be difficult to affix them to a mount, etc. as a record for storage, or the mount may warp due to curling, making it difficult to file. It's inconvenient. The present invention aims to solve this problem. [Means for Solving the Problems] The above object is to coat at least one layer of cellulose ester or regenerated cellulose on the side of the support that comes into contact with the processing solution, and to coat at least one layer containing gelatin on the back side of the support. In the coated image receiving element for silver salt diffusion transfer method,
The amount of organic solvent remaining on the side having the cellulose ester and/or the regenerated cellulose layer is 1 ag/t.
It has been found that curling is significantly reduced by rubbing below ri. Usually, an image receiving element for silver salt diffusion transfer method is coated with an alkali neutralization layer, a neutralization timing layer, and a silver precipitation core layer, but the binder polymer used for these layers is not soluble in water. Many are easily soluble in organic solvents. Each of the above layers is formed by applying a solution of a binder polymer dissolved in an organic solvent. When applying such an organic solvent solution, if only a low boiling point solvent is used, for example, "Paint flow and pigment dispersion (Te
+ gple C, Patton, translated by Kenji Ueki, co-translated by Shigezo Tochihara and Yasube Imaoka, Imori Publishing, 1980) "No 35
As stated in 05J, 17.2, it is generally known that a high boiling point solvent with a slow evaporation rate is added to prevent orange peel, which tends to occur due to convection accompanying evaporated solvent. ° is being treated. Also, when applying a solution melted in a low boiling point organic solvent onto a long support, the solvent evaporates locally in a part of the support, and the solution viscosity in that part becomes higher than in the pond part, resulting in uneven coating. It is known that a high boiling point solvent is added to prevent this, which tends to cause streak-like unevenness. In this way, it is practical to apply a polymer binder with a low-boiling point organic solvent alone (although it is practical to add a high-boiling point solvent to the polymer binder, but most of the high-boiling point solvent evaporates during the coating and drying process and is not detected outside the system. However, it is well known that it is difficult to completely remove it within a limited amount of time and that it exists in the system as a so-called residual solvent.The present inventor has developed an image receiving element for silver salt diffusion transfer method. Curling of prints obtained by the silver salt diffusion transfer method is affected by the amount of organic solvent remaining in the image receiving element, and preferably the total amount of residual organic solvent on the image-receiving layer side of the image-receiving element is kept to about 1/I or less. We found that the degree of curling could be improved to a level that does not pose a practical problem.The fact that the residual organic solvent in the image receiving element is removed from the system depending on the environmental conditions and period during which the print is stored is largely responsible for the curling of the print. Unlike the conventionally known reversible curl caused by the inflow and outflow of water, the curl caused by residual organic solvent evaporating and being removed from the system is irreversible.Residual organic solvent The amount can be reduced by reducing the amount of high boiling point solvent used in the coating solution to the minimum amount that can prevent the aforementioned yuzu skin and uneven streaks, and/or by selecting appropriate drying temperature, drying time, and drying air volume. During the coating and drying process, a large amount of organic solvent naturally evaporates from the coating film and is removed from the system, but in this process, the support and coating film are under a predetermined tension, so the solvent evaporates. It was found that the curl caused by scattering out of the system is negligible because it is corrected by the tension.For prints, such a correction force does not work under normal storage conditions, so the residual organic solvent is removed from the system. The present invention can also be used in combination with a system in which a plasticizer is added to the image-receiving element so as not to deteriorate the surface quality of the print.For the silver salt diffusion transfer method described in the present invention In the image receiving element, an alkali neutralization layer, a neutralization timing layer, and a silver precipitation nucleus layer are sequentially coated on one side of the support, and a light-shielding layer is sequentially coated on the other side (bank side) of the support. A layer for image stabilization between the alkali neutralization layer and the neutralization timing layer, and a protective layer (release layer) on the silver precipitation core layer.
Alternatively, a protective layer may be coated on the white pigment layer on the bank side. The support used in the present invention is preferably waterproof. As a guideline for waterproofness, the level shown when polyethylene is applied to a thickness of 3 μm or more is sufficient. Waterproof supports include hydrophobic plastic film, paper support laminated with hydrophobic plastic film,
Included are paper supports impregnated with hydrophobic compounds and the like. Specific examples of hydrophobic plastic films include polyethylene, polypropylene, polystyrene, polycarbonate, polyethylene terephthalate, cellulose triacetate, cellulose diacetate, and the like. When laminating a hydrophobic brass tink film on a paper support, polyolefins such as polyethylene and polypropylene are preferred from the viewpoint of manufacturing cost and suitability for lamination. Laminating thickness is 3-70μ, preferably 10-4
It is 0μ. In principle, any cellulose ester used in the alkali neutralization layer, neutralization timing layer, and image-receiving layer before saponification of the present invention is one in which some or all of the hydroxyl groups of cellulose are esterified. Examples include fatty acid cellulose such as cellulose acetate and cellulose propionate, and inorganic acid cellulose such as cellulose sulfate and cellulose phosphate. A suitable cellulose ester is selected from the above cellulose esters depending on the degree of substitution of the hydroxyl group of cellulose with ester, the composition of the solvent used, the rate of saponification reaction, and the photographic activity of the image-receiving layer (adsorption rate of dissolved silver). , cellulose acetate is generally preferred. Further, the preferred range of the degree of substitution of cellulose acetate is 1°53
(degree of acetylation: 40%) to 2.7 (degree of acetylation: 58%), and a more preferable degree of substitution is 1.7-2.6. In the present invention, for example, the alkali neutralization layer is
Polymer acids such as those described in No. 697 are used. Preferred polymer acids include maleic anhydride copolymers, such as styrene/maleic anhydride copolymers, methyl vinyl ether/maleic anhydride copolymers, ethylene/maleic anhydride copolymers, acrylic acid copolymers, and methacrylic acid copolymers. Examples of acid copolymers include acrylic acid/alkyl acrylate copolymers, acrylic acid/alkyl methacrylate copolymers, methacrylic acid/alkyl acrylate copolymers, methacrylic acid/alkyl acrylate copolymers, and the like. Further, these polymeric acids can be used in the neutralizing layer by mixing with an alkali-impermeable polymer such as cellulose ester or by mixing with an alkali-permeable polymer. The optimum amount of polymer acid applied varies depending on the amount of alkali contained in the developer, but it is 25-1 with respect to the amount of alkali in the developer.
It is preferably 50 mol%, more preferably 40-100 mol%. For example, gelatin, polyvinyl alcohol, polyacrylamide, partially hydrolyzed polyvinyl acetate, a copolymer of β-hydroxyethyl methacrylate and ethyl acrylate, or acetyl cellulose is used as the main component of the neutralization timing layer. Although it is well known that cellulose acetate is a preferred material. Image-receiving layers containing silver precipitation nuclei in a regenerated cellulose binder include U.S. Pat. No. 3,756.825 and West German Patent L.
No. 903.741, French Patent No. 2090.476, JP-A-63-247755, A.R.
ott), E. Weyde, “Photographic Cirno\- Diffusion Transfer Processes (Ph.
otographic 5ilver Diffusi
on TransferProcesses), Focal Press London 1972 (Focal
Press, London + 1972), chapter 3, 2, 4, 4, pages 61-65, toning agents can be used. In order to improve the storage stability of silver salt diffusion transfer photographic images, a layer for capturing iodine ions may be coated between the image receiving layer and the support.
Image storage improvers such as those described in No. 7 may be included in the image receiving element. A release layer or a protective layer may be coated on the image-receiving layer in order to improve the gloss and smoothness of the surface of the silver salt diffusion transfer photographic print and to prevent the image-receiving layer from being damaged. A coating layer is coated on the back side of the image-receiving sheet to provide a light-shielding function and/or to balance the curl. The light-shielding layer is obtained by coating a carbon blank or a solution in which a black material such as a dye is dispersed or added to gelatin. A white layer for hiding the black color of the light shielding layer can be obtained by applying a solution in which a pigment or particulate material having voids such as titanium white or calcium carbonate is dispersed in gelatin. The coating solution may contain surfactants, thickeners, hardeners, softeners, wetting agents, etc. that are well known in the art. Further, the outermost layer of the hack layer may be coated with a protective layer to prevent the light shielding layer and/or the white layer from being scratched or peeled off due to external force. The protective layer is also preferably a layer containing gelatin, and may have a matting agent dispersed therein in order to provide writability and prevent blocking. The gelatin used in these hack layers may be any one of alkali-treated gelatin, acid-treated gelatin, enzyme-treated gelatin, and gelatin partially modified with amino groups or carboxy groups. °The amount of black material used for light shielding cannot be generalized, but even if a silver halide photographic light-sensitive material with a sensitivity of ■503,000 is irradiated with light at 150,000 lux for 10 seconds through the light shielding layer, it will be exposed to light. It is preferable to use an amount that does not cause any damage. The amount of pigment or particulate matter used in the white layer to hide the black layer cannot be generalized, but it is sufficient to make it easy to identify the written content for most colors when writing with a pencil, pen, etc. It is preferable to use only the amount that can hide the black color. Preferably, the amount of binder applied to the back layer is approximately the same as the amount of binder applied to the front side. The diffusion transfer method is well known in the photographic industry, and a detailed explanation thereof will be omitted. Many types of photographic materials can be made using this diffusion transfer method. That is, a photosensitive material, in which a photosensitive element containing a silver halide photographic emulsion is coated on a support, and an image receiving element are superimposed,
It is known that a transferred image can be obtained by spreading an alkaline processing composition as a processing element, for example a high viscosity or low viscosity alkaline processing composition containing a developing agent and a silver halide solvent, between the two elements. This method is advantageously used in implementing the present invention. The photosensitive element used in the present invention has a photosensitive layer containing one or more silver halide emulsions on a support, and any photosensitive element known in this field can be used. The silver halide is particularly preferably a high-temperature silver iodobromide (iodine content 1-10 mol%), which is dispersed in a suitable protective colloid material such as gelatin, casein, albumin, polyvinyl alcohol, polyacrylamide, etc. . Emulsions suitable for such uses are P-grafkide (P, G
lafkideS), Chimie et Physiqu Photographic (Chimie et Physiqu)
ePhotograhique, Paul Mon
TE1 Publishing, 1967) G.F. Duffin (G,
Photographic Emulsion Chemistry, by F. Duffin
ulsion Chemistry, The Foca
IPress, 1966), V. L. Zeliks+an at al.
Making and Coat Photographic Emulsion
ing Photographic Emulsion,
It can be prepared by the method described in The Focal Press, 1964). These silver halide emulsions can be subjected to chemical sensitization, spectral sensitization, or superchromatic sensitization, if necessary. In addition, antifoggants, hardeners, and
Development accelerators, surfactants, antistatic agents, etc. can also be added. Further, a protective layer can be provided on the photosensitive layer to protect the photosensitive layer from physical damage, and capping agent particles can be dispersed in the protective layer to improve the surface slipperiness and prevent blocking. Various processing compositions are used as the processing element used in the present invention, and preferably the processing composition contains a developing agent, a silver halide solvent, and an alkaline agent.
Depending on the purpose, a developing drug and/or a silver halide solvent may be included in the light-sensitive element and/or the image-receiving element. Suitable silver halide developing agents include benzene derivatives in which at least two hydroxyl and/or amino groups are substituted in the ortho or para positions of the Hensen nucleus, such as hydroquinone, amitol, metol, glycine, p
-aminophenols and pyrogallol; and hydroquinylaminos, especially primary and secondary aliphatic and aromatic N-substituted or β-hydroxylamines, which are soluble in aqueous alkalis, such as hydrocozylylamino, Included are N-methylhydroxylamine, N-ethylhydroxylamine and N-alkoxyalkyl substituted hydroxylamines such as those described in U.S. Pat. No. 2,857,276 and U.S. Pat. No. 3,293,034. Hydroxolamine derivatives having a tetrahydrofurfuryl group described in JP-A-49-88521 can also be used. Also, West German patent application (OLS) 2,009.054, 2,009.055
Also used are amyl reductones described in US Pat. No. 2,009.078 and heterocyclic amyl reductones described in US Pat. No. 4,128.425. Additionally, the tetraalkyl reductin acids described in US Pat. No. 3,615,440 can also be used. Further, the above developer can be used in combination with the auxiliary developer such as a phenidone compound, a p-aminophenol compound, and ascorbic acid. Suitable silver halide solvents include conventional fixing agents such as sodium thiosulfate, sodium thiocyanate,
ammonium thiosulfate and others described in the above-mentioned U.S. Pat. U.S. Patent 2,857,
Combinations such as those described in No. 274 are included. 1,■-Bissulfonylalkanes and their derivatives are also known and can be used as silver halide solvents in the present invention. The treatment composition contains an alkali, preferably an alkali metal hydroxide, such as sodium hydroxide or potassium hydroxide. When the processing composition is distributed as a thin layer between the superposed photosensitive element and image receiving element, the processing composition preferably contains a polymeric film forming agent, a thickening agent or a thickening agent. Hydroxyethylcellulose and sodium carboxymethylcellulose are particularly useful for this purpose and are included in the processing composition in concentrations effective to provide the appropriate viscosity according to known principles of diffusion transfer photography. The processing composition may further contain other additives known in the art of silver salt diffusion transfer, such as antifoggants, stabilizers, and the like. (Example) The present invention will be explained in more detail with reference to specific examples below, but the present invention is not limited to the specific examples.

The numbers in [ ] indicate the coating amount in terms of solid content in g/n. Example 1 Image-receiving sheets (A) and (B) with different solvent compositions of coating liquids
was created. (2) Preparation of image-receiving sheet The following layers were sequentially provided on a polyethylene laminate support. Engineering) Neutralization layer (A) Cellulose acetate (oxidation degree 53%)

[6゜0] Methyl vinyl ether/maleic anhydride copolymer [4
,01 Uv1tex QB (Chiha Geigy product name)

0.04] and applied by dissolving it in a 6:4 mixed solvent of acetone (boiling point: 56°C) and cyclohexanone (boiling point: 156°C), and drying at 90°C. (B) Same as (A) except that the composition of the mixed solvent was 9:1. 2) Neutralization timing layer (A) Cellulose acetate (oxidation degree 55%)

It was coated by dissolving it in a mixed solvent of acetone and cyclohexanone in a ratio of 6:4 so as to give a ratio of [8°5], and was dried at 90°C. (B) Same as (A) except that the solvent is acetone alone. 3) Image receiving layer (A) cellulose acetate (oxidation degree 53%)

[2°0] Palladium sulfide was dissolved in a 6:4 mixed solvent of acetone and cyclohexanone so as to be [7,5×10−′] and applied, and dried at 90°C. (B) Same as (A) except that the solvent is acetone alone. 4) Saponification and water washing (A) and (B) are common, and after saponifying the surface with a mixture of 0.7 g of Na0HI, 24 g of glycerin, and 280 methanol, the sample was washed with water and dried at 60°C. 511 Delamination (A) and (B) are common butyl methacrylate/
Acrylic acid copolymer (molar ratio 15:85) was added to [0,04
1. After dissolving in methanol and applying, heat at 60°C.
It was dried. After coating the above layer on the front side, the following bank layer was coated on the back side of the support. 6) Light-shielding layers (A) and (B) both use carbon black [4,01 gelatin [10,01] 7) White layers (A) and (B) also use titanium dioxide [6,0] gelatin [2,11 The amount of organic solvent remaining in the image receiving sheets (A) and (B) was analyzed using a gas chromatograph, and the results are shown in Table 1. Table - Amount of residual organic solvent (■/m') 2. Preparation of photosensitive sheet The following layers were sequentially provided on the support (black polyester film). 1) Silver iodobromide with an average particle size of 1.0μ (iodine content 6.5
mole%)

[0.591 in terms of silver amount Gelatin [3,51 2) Gelatin as a protective layer [0,71] Polymethyl methacrylate particles [0,l:3. Preparation of treatment solution 40% potassium hydroxide aqueous solution 323 cc Titanium dioxide 3g Hydroquine ethylcellulose 79g Zinc oxide 9
．． 75 g N,N-bis-methquinethylhydroquinamine 75 g triethanolamine aqueous solution (4.5 parts triethanolamine to 6.2 parts water) 17.14 g tetrahydropyrimidinethione 0.4 g 2,4-dimercaptopyrimidine 0.35 g uracil 80 g water
1193g photosensitive sheet color temperature 54
After exposure using a photosensitive needle with a light source of 0.00 mm, the exposed photosensitive sheet and the above-mentioned image-receiving sheet are stacked, and the processing solution is spread between them to a thickness of 0.04 nm for diffusion transfer development. Then, 30 seconds after starting development in an atmosphere of 25° C., the image-receiving sheet was peeled off from the photosensitive sheet for minutes *< peeling) to obtain a positive image. Three copies of the prints (A) and (B) obtained in this way were made. 25℃, 8
The degree of curling was evaluated when each sample was stored at 0% RH for 5 days. Evaluation of curl was performed as follows. ■) When a curl is approximated as a part of a circle, if the center of the circle is on the side of the image, it will take a positive value, and if the center of the circle is on the opposite side of the image, it will take a negative value. 2) Maximum height when the print is placed on a horizontal surface (
(expressed in liters) is the curl value. The smaller the absolute value, the less curl there is, which is preferable. Table 2 lists evaluations of curl under each storage condition for samples (A) and (B). Table 2: Curling of prints From Tables 1 and 2, it can be seen that the image receiving sheet (B) with a reduced amount of residual organic solvent can reduce the curl of prints. Example 2 Image-receiving sheets (C) and (D) were prepared by coating the following layers in sequence on a polyethylene laminated paper support. Creation of image receiving sort 1) Neutralization layer (C) Cellulose acetate (oxidation degree 53%) [6°0] Methyl vinyl ether/maleic anhydride copolymer [4
,01 IJvitex OR (trade name of Ciba Geigy) was mixed with acetone and methyl cellosolve (boiling point 125
°C) (7) Dissolve and apply in a 70:30 mixture of solvent ii,
It was dried at 80°C. (D) Same as (C) except that acetone and methyl cellosolve are a mixed solvent of 95=5. 2) Neutralization timing layer (C) Cellulose acetate (oxidation degree 55%)

[8゜5] 1-(4-hexylcarbamoylphenyl)2.3-nohytroimidazole-2-thione was mixed with acetone and methyl cellosolve to give [0,06] 70:
It was applied by dissolving it in a mixed solvent of 30°C and drying at 80°C. (D) Same as (C) except that the solvent is a 99=1 mixed solvent of acetone and methyl cellosolve. 3) Image-receiving layer (C) Cellulose acetate (oxidation degree 53%) [1°5] Palladium sulfide was dissolved in [8,0XIO-'] in a 70:30 mixed solvent of acetone and methyl cellosolve and applied. and dried at 80°C. (D) Same as (C) except that the solvent is a 95=5 mixed solvent of acetone and methyl cellosolve. 4) Saponification and water washing (C) and (D) are the same as in Example 1. 5) Both release layers (C) and (D) are the same as in Example 1. After coating the above layer on the front side, the following back layer was coated on the back side of the support. 6) The light-shielding layer (C) and (D) both have a common carbon index of [4,01 gelatin] [9,2] 7) The white layer (C) and (D) both have a common carbon index of [6,01 gelatin] and titanium dioxide [9,2] [2,11 8) Protective layers (C) and (D) are made of polymethyl methacrylate with an average particle radius of 1.2 microns [0,081 Gelatin is [0,81] The above image receiving sheet (C), ( The results of gas chromatograph analysis of the amount of organic solvent remaining in D) are shown in Table 3. Table 3: Residual organic solvent it (■/=> Exposure and diffusion transfer development were carried out in the same manner as in Example 1 using the same photosensitive sheet and processing solution. Image was received 5 minutes after starting development in an atmosphere of 25°C. A positive image was obtained by peeling the sheet from the photosensitive sheet. Pudding thus obtained) (C), (D)
Each temperature is 80%RH-20%RH for one day each.
The prints were stored for 14 days at a temperature cycle of It is shown. Table 4: Curling of prints From Tables 3 and 4, it can be seen that the image receiving sheet CD) with a reduced amount of residual organic solvent can reduce the curl of prints. (Effects of the Invention) When the amount of organic solvent in the image receiving element for silver salt diffusion transfer method, particularly in the cellulose ester layer and the regenerated cellulose layer, is set to a specific amount, preferably less than about 1/2, the curl of the photograph of the processing solution is reduced. is significantly reduced. Patent applicant Fuji Photo Film Co., Ltd. November J, 1990! −

Claims (1)

[Claims] An image-receiving element for silver salt diffusion transfer method, in which at least one layer of cellulose ester or regenerated cellulose is coated on the side of the support that comes into contact with the processing solution, and at least one layer containing gelatin is coated on the back side of the support, The amount of organic solvent remaining on the side having the cellulose ester and/or the regenerated cellulose layer is 1 mg/m^ before development.
An image-receiving element for a peel-off type silver salt diffusion transfer method, characterized in that the particle diameter is 2 or less.