JPS63118154A - Base for photography - Google Patents

Abstract

PURPOSE:To improve the luminance and saturation of an image and to expand an angle at which the image can be observed well by forming a surface having class 2 diffuser reflectivity. CONSTITUTION:Aluminum foil of about 10mu thickness, which is formed by subjecting, for example, metallic aluminum the surface of which has the class 2 diffuse reflectivity to rough rolling, passing the same vertically between two upper and lower rolls making diametrical contact with a central rolling roller, superposing two sheets of the annealed metal aluminum and rolling the same, has the class 2 diffuse reflectivity on the surfaces facing each other. While LDPE is extrusion-coated on white original paper for photography, the metallic aluminum is laminated thereon and the other face of the substrate is subjected to a corona discharge treatment; thereafter, HDPE is extrusion-coated thereon to form a PE resin layer having 30mu thickness. A thin layer of an ionomer resin is provided on the aluminum surface, by which the base is obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to photographic supports that provide excellent images. More specifically, the present invention relates to a photographic support that has dramatically improved image brightness and saturation, gradation reproducibility in dark areas, sharpness, and the like.

[Conventional technology]

Conventionally, as a photographic support, for example, TAC.

Transparent plastic films such as PET, reflective materials such as paper, synthetic paper, plastic films containing white pigments, glass plates, and metal plates (for example, aluminum plates with anodized surfaces) are known. There is.

In particular, in order to improve the whiteness of the support, fine powder of a metal oxide or an inorganic compound (for example, titanium oxide, barium sulfate, magnesium oxide, etc.) is mixed or contained as a sizing agent on the surface of the support. However, usually
Increasing the whiteness of the support improves the reproduction of white in photographs, but degrades the sharpness of the image. To this end, it has been possible to incorporate an anti-irradiation dye into the silver halide-containing photosensitive layer provided on the support, or to provide an anti-halation layer.

Also, the so-called Daquereotype photographic method has been known since the early 19th century. This method involves blowing iodine gas onto a well-polished silver plate and causing a chemical reaction to create a layer of AgI.
After image exposure, it is developed with mercury gas to create a photographic image. However, since various chemical treatments are carried out without using a prepared silver plate as a support, the surface of the silver plate becomes contaminated and does not maintain its original mirror finish, and the silver/mercury image directly appears on the silver surface. Due to the masking adhesion, the brightness and sharpness of the image could not be changed.

Furthermore, images obtained by coating an ordinary emulsion in a layer on an aluminum support that reflects light well and has a metallic luster surface were slightly brighter than those obtained from baryta paper. In addition, silver halide emulsions contained in microcapsules and coated in a single layer were bright and transparent grains that appeared to shine (for example,
-33783). Moreover, it was difficult to see due to the reflection of the light, and the slight scratches on the surface were not pleasing to the eye.

Furthermore, it is also known to provide a vapor-deposited metal layer of aluminum or chromium to prevent static (for example,
British Patent No. 1340403, Special Publication No. 59-41573
, Special Publication No. 59-10420, etc.). However, not only is this not related to the present invention, but there is no description at all that suggests improvement in image reproduction.

[Problem that the invention seeks to solve]

A first object of the present invention is to improve the brightness and saturation of an image, and particularly to expand the angle at which the image can be observed well. The second purpose is to improve image sharpness to a degree that cannot be achieved with conventional techniques. The purpose of the pond will be clear from the description.

[Means for solving problems]

The above aspects of the present invention are achieved by a support having a type 2 diffusely reflective surface or a photographic support comprising a substrate provided with a solid thin film layer having a type 2 diffusely reflective surface. Ta.

The support of the present invention will be explained below.

In general, the reflection characteristics of an object's surface can be roughly divided into specular reflection and diffuse reflection. Furthermore, diffuse reflection can be divided into first type diffuse reflection and second type diffuse reflection. Specular reflection is reflection from a smooth surface and follows the normal rules of specular reflection. Diffuse reflection, on the other hand, is reflection from paper, painted surfaces, wood, and walls, where parallel incident light rays are reflected not only in the specular direction but also in all directions.

Type 2 diffuse reflectance generally refers to reflection from rough surfaces with small slope boundaries, such as ground glass or polished metal surfaces. In the present invention, type 2 diffuse reflectance refers to reflectivity in which a smooth mirror-reflecting surface has small irregularities with small boundaries.

In this case, the diffusely reflected light can be considered to be a collection of specularly reflected lights from small reflecting surfaces. This is the type 2 diffuse reflectance.
This is because of its small specular reflectivity. For example, it is defined in Chapter 18, Section 1 of the Color Science Handbook (Color Science Society of Japan, 5th edition, 1985, published by the University of Tokyo Press).

Type 1 diffuse reflectance and type 2 diffuse reflectance can be distinguished based on the difference in reflectance. In the present invention, type 2 diffuse reflectance refers to a case where the reflectance R is 0.5 or more. Therefore, the type 2 diffuse reflective surface in the present invention is 0.5
It has a reflectance of 6, more preferably 0.7 to 1.0. The reflectance R of a smooth surface made of the same material when irradiated with light in the vertical direction can be determined using a goniole left meter. In addition, what is the first type diffuse reflectance?
When a light-transmitting solid is made into a fine powder, it refers to the reflectivity in which incident light becomes diffused light due to total reflection and reflection on a part of the surface.

Specular reflection and diffuse reflection can be distinguished based on the difference in spectral reflectance. Here, the spectral reflectance is measured using 550 layers of monochromatic light incident at an incident angle of 7 degrees from the normal direction of the test sample, and the angle of view is 10 m centered on the specular reflection direction of the incident light.
A trap is set up at 90° to remove the specularly reflected component, and the other components that are diffusely reflected within a viewing angle range of 90° from the normal are integrated using an integrating sphere and calculated as a percentage of the incident light. The second type diffuse reflectance in the present invention has the above-mentioned spectral reflectance (measured with monochromatic light of 550 layers m) of 5% or more. Therefore, the type 2 diffuse reflective surface of the present invention refers to a surface that exhibits a spectral reflectance (measured with monochromatic light of 550 layers m) of 5% or more, preferably 10%, and more preferably 20% or more. . The spectral reflectance can be determined using, for example, Hitachi Color Analyzer Model 307.

As a result, from the reflectance R of the material used to form the surface with respect to light irradiation in the vertical direction, and the value of the spectral reflectance when a trap of a goniole left meter such as a Hitachi color analyzer is provided, the method of the present invention is calculated. Two types of diffuse reflection can be distinguished: specular reflection and first type diffuse reflection.

The solid, preferably metal, providing a diffusely reflective surface of type 2 includes F, Benford et al.
, Opt, Soc, Amer, Vol. 32, pp. 174-18.
4 (1942), such as silver, aluminum, gold, copper, chrome-plated platinum, alloys thereof, such as aluminum/magnesium alloy, aluminum/f4, aluminum/antimony, and sinchu.

Further, the surface of the solid thin film layer, preferably the metal thin film layer, which provides the second kind of diffuse reflection property can be obtained as follows. First, the surface of a specularly reflective metal plate is patterned during rolling, or mechanically, for example, by using a brush with appropriate strength, or by spraying fine particles of an abrasive such as pumice with a jet stream to form grains. Etching methods using electrolytic methods can be used. The metal thin film layer having reflective properties according to the present invention can be laminated or stacked on a substrate to serve as a support.

Second, there are known methods for forming metal thin film layers, such as vacuum evaporation, sputtering, ion blating, electrodeposition, and electroless plating, which can be used to form one or two layers on a given substrate. The above thin film layers can be provided. In the case of specular reflection, it can be made into a type 2 diffuse reflection surface by the method described above.

Surface irregularities can be determined by embedding and fixing the sample in resin, cutting an ultrathin section, and observing the cross section using an electron microscope. It can be directly measured with submicron accuracy using a cross-sectional shape measuring device that uses electron beam irradiation. The number of cylinders of unevenness can be measured as the frequency of surface roughness, preferably the average frequency is o, 1 to 2000 care mm, more preferably 1 to 2000 mm.
1000 pieces/mm.

When the support of the present invention is used, the viewing angle of images is expanded,
By enlarging the light source from a point to a flat surface, it is very easy to see (and the brightness of image highlights, image saturation, and gradation reproduction of dark areas are significantly improved. Also, surprisingly, Image sharpness has been dramatically improved.

As the substrate of the support according to the present invention, those conventionally used can be used as they are without any problem. For example, plastic, film, paper, RC paper, synthetic paper, metal plate, etc. are used. Preferably paper or RC-paper,
The pretextured aluminum foil of the present invention can be laminated to the polyethylene layer of RC-paper in combination with low density polyethylene.

The support according to the invention can be provided with a silver halide emulsion layer via an undercoat. The undercoat layer is obtained using a thermoplastic resin such as polyethylene or polypropylene, or an ionomer resin containing an epoxy adhesive. A gelatin or gelatin silver halide emulsion layer can be provided thereon, with or without corona discharge treatment.

In some cases, the present invention may be applied to an upper layer such as an undercoat layer by adding a small amount of fine particles, for example, 1 g/m' or less, which exhibits the first type of diffuse reflection, and a slight dispersion of latex or a high boiling point organic solvent, which causes the first type of diffuse reflection, to the upper layer. Particles can also be included.

In addition, by mixing fine powder of titanium oxide or barium sulfate in the substrate and providing minute holes in the metal thin film layer according to the present invention on the surface thereof, a part of the first type of diffuse reflection is mixed with the second type of diffuse reflection. You can also do it. As a result, sharpness is less likely to deteriorate and the viewing angle of observation can be expanded.

In the present invention, the support having the type 2 diffuse reflective surface of the present invention can be obtained by patterning the metal film during rolling as described above. Examples of metals include the aforementioned silver, aluminum, gold, copper, chromium nickel, platinum, and alloys thereof.

The support of the present invention can be widely used as a reflective support for photography. A silver halide emulsion layer for black and white printing paper may be provided on the support via an undercoat layer if necessary, and a protective layer may be provided thereon. Similarly, a color photographic paper light-sensitive material can be prepared by providing two or more light-sensitive silver halide emulsion layers each having a different spectral sensitivity and each containing a different color coupler for ordinary color photographic paper. It is also possible to produce color reversal photosensitive materials, direct positive color photographic papers, and direct positive color copy materials using a light fogging method. Further, on this support, red-, green-, and blue-sensitive silver halide emulsion layers containing silver halide grains having different spectral sensitivities and a dye used in the silver gouy bleach (SDB) method are formed. It is also possible to make SDB-type printed photosensitive materials by using this method.

It can also be used as a material for forming color images by providing a mordant layer on the support of the present invention and diffusing and transferring the color-developing dye. It can also be used as a material for forming a silver diffusion transfer type silver image by providing physical development nuclei in an undercoat layer on the support of the present invention.

Further, the photographic support of the present invention is disclosed in U.S. Patent No. 4.500.
．． No. 626, JP-A-60-133449, JP-A No. 59-2
18443, Japanese Patent Application No. 60-79709, etc.
It can also be applied to image receiving materials).

Next, Examples will be shown to further specifically explain the present invention. However, it is not limited to this.

Example 1 Metal aluminum was roughly rolled, and further, two sheets of annealed metal aluminum were overlapped and rolled on a central rolling roller by rolling the upper and lower rollers between the upper and lower two adjoining rolling rollers. An aluminum foil with a thickness of 10 μm was obtained. Surprisingly, this adjoining surface had a type 2 diffuse reflection property. Low-density polyethylene was extrusion coated onto white photographic paper, and metal aluminum was laminated. Next, the other surface of the substrate was subjected to a corona discharge treatment, and then high-density polyethylene was extrusion coated to form a polyethylene resin layer having a thickness of 30 μm. Sample 1 of the support was obtained by providing a thin layer of ionomer resin on the aluminum surface.

On the other hand, according to Example 1 of Japanese Patent Application No. 60-52788, a polyethylene phthalate film with a thickness of 100 μm was placed in a vacuum deposition apparatus R, and aluminum was deposited on the substrate surface to a thickness of 100 μm at a vacuum degree of 10-5). A film was formed. This is coated with low density polyethylene to a thickness of 30 mm.
Comparative sample a
I got it.

Sample 1, which is the support of the present invention, had no light reflection compared to comparative sample a, had metallic shine, and had a wider viewing angle.

Example 2 Using the support sample 1 obtained in Example 1, the surface on which the aluminum foil was provided was subjected to corona discharge treatment, and then gelatin and the hardening agent 1-oxy-3,5-dichloro-3-)rea After applying an undercoat treatment using sodium chloride, a silver chlorobromide emulsion layer (halogen composition AgC2) used for photographic paper is applied on top of the undercoat treatment using
67% average particle size 0.4μ) was provided, and a protective layer was further provided. Silver coating strain was 2.1 g/m'. After image exposure, the image was developed using developer D-72 (1:2 dilution), fixed and washed with water. On the other hand, resin-coated paper (a support obtained by extrusion coating a white base paper with polyethylene mixed with titanium oxide on one side to make it white to provide the first type of diffuse reflection, and on the other side with polyethylene), which is usually used for photographic paper. Photographic paper was obtained in the same manner using the sample.

This was subjected to image exposure in the same manner, and then developed, fixed, and washed with water to obtain an image. The image obtained from Support Sample 1 had brighter highlights and richer and sharper gradations in dark areas than those from Support Comparison Sample 1. Surprisingly, maximum density and shadow tightness were not inferior.

Example 3 Using support sample 1 and comparative samples a and b, patent application No. 1986-
A color reversal photographic paper was obtained according to Example 1 of 99122.

After image exposure, normal reversal development, i.e. first development, water washing,
Perform reverse exposure, color development, water washing, bleach fixing, and water washing.
Got the image.

Sample 1 of the present invention has significantly improved lighting and sharpness compared to Comparative Sample A, and has an enlarged viewing angle without reflection from the light source compared to Comparative Sample A. In particular, the gradation in the dark areas, which is said to be a defect of inverted color photographic paper, has become richer, and the overall macro gradation has become softer, but the improvement in sharpness has made the micro gradation harder, resulting in extremely fine textured images. Obtained.

Example 4 After subjecting Support Sample 1 to a corona discharge treatment, an undercoat was provided using gelatin and the hardening agent 1-oxy-3,5-dichloro-3-) riazine sodium.

Preparation of Color Emulsion Coating Solution Core/aracouchel type internal emulsion B was prepared as follows.

Emulsion B KBr O, 5 mol per 1β, NaCI! , 0.2
After adding 30 g of gelatin to a mixed solution 1β with a concentration of 10.0015 mol and K and dissolving it, 1 mol of silver nitrate was added at 60°C.
700 cc of the mol/β liquid was added to the above mixture over 20 minutes, and physical ripening was further performed for 20 minutes. Next, after washing with water to remove water-soluble halides, gelatin 2
0g was added and further water was added to bring the total volume to 1200cc. A silver halide emulsion having an average grain size of 0.4 μm was prepared.

To 300 cc of this emulsion were simultaneously added 500 cc of a 1 mol/β aqueous silver nitrate solution and 500 cc of a 2 mol/β aqueous sodium chloride solution at 60° C. to precipitate a silver chloride shell, which was then washed with water. Silver halide emulsion B having an average grain size of 0.7 μm was obtained.

1st layer coating solution preparation Nijian coupler (a) 10 g
and 2.3 g of color image stabilizer (b) and 10 m of ethyl acetate
A and solvent (C) 4mβ were added and dissolved, and this solution was reduced to 10%
1 containing 5 ml of sodium dodecylbenzenesulfonate
0% gelatin aqueous solution 90mf! It was emulsified and dispersed. On the other hand, the above silver halide emulsion B (containing 70 g/kg of Ag)
Add the red-sensitive dye shown below to 2.0% per mole of silver halide.
90 g of a red-sensitive emulsion was prepared by adding 0.times.10-' mol. The emulsified dispersion and the emulsion were mixed and dissolved, and the concentration was adjusted with gelatin so as to have the composition shown in Table 3, and the nucleating agent (compound 2) was added to 3X10-' mol per mol of Ag and the nucleation accelerator was added to 1 mol of Ag. 4.7 x 10-' moles per
A coating solution for hawks was prepared.

The coating solutions for the second to seventh layers were also prepared in the same manner as the coating solution for the first layer. 1-oxy- as gelatin hardening agent in each layer
3,5-dichloro-3-)riazine sodium salt was used.

The following spectral sensitizers were used for each emulsion.

Sensitizing dye for blue-sensitive emulsion layer Sensitizing dye for green-sensitive emulsion Initiation prevention dye for green-sensitive emulsion layer Anti-irradiation dye for red-sensitive emulsion layer SO, K
The structural formulas of the compounds used in this example, such as the 5OnK coupler, are as follows.

(b) 1:3:3 mixture (molar ratio) of color image stabilizer H (e) 1:1.5 mixture (weight ratio) of magenta coupler (weight ratio) 1:2:2 mixture (weight ratio) (h) Ultraviolet light 1:5:3 mixture (molar ratio) of absorber and 4119 (L) H ('') solvent (iso [JID hrP=D (k) yellow coupler (1) color image stabilizer and 113) solvent ( iso C5f1.so 3rVP=0 Nucleating agent compound-2 Nucleating accelerator, 10 Processing step, A Time Temperature color development 3 minutes 30 seconds 33°C bleach-fixing
40 seconds 38℃ stable ■ 20
Seconds 38℃ ■ 20 seconds 38℃ ■ 20 seconds 38℃ The stabilizing bath replenishment method is to replenish the stabilizing bath ■, lead the overflow liquid from the stable bath ■ to the stabilizing bath ■, and the overflow liquid from the stable bath ■ to the stabilizing bath ■. A so-called countercurrent replenishment method was adopted, which leads to

[Color developer]

Mother liquor Diethylenetriaminepentaacetic acid 2.0g Benzyl alcohol 12.8g Diethylene glycol 3.4g Sodium sulfite
2.0g Sodium Bromide 0.
26g Hydroxylamine sulfate 2.60g Sodium chloride 3.20g 3-Methyl-4-amino-N-ethyl-N-(β-methanesulfonamidoethyl)-aniline 4.
25g potassium carbonate 30.0g
Add 1.0g of fluorescent brightener (stilbene type) water
1000 ml pHIo, 20 pH adjusted with potassium hydroxide or hydrochloric acid.

[Bleach-fix solution]

Mother liquor Ammonium thiosulfate 110g Sodium bisulfite 10g Iron diethylenetriaminepentaacetate (II! > 56g Ammonium monohydrate ethylenediaminetetraacetic acid disodium 5g Add dihydrate 100100OI-(
6,5 pH was adjusted with aqueous ammonia or hydrochloric acid.

[Stabilizing liquid]

Mother liquor 1-hydroxyethylidene-1゜1'-diphosphonic acid (60%) 1.6 mA Bismuth chloride 0.35 g Polyvinylpyrrolidone 0.25 g Aqueous ammonia
2.5ml nitrilotriacetic acid/3Na
1. Og5-chloro-2-methyl-4-isothiazolin-3-one 50+ng2-octyl-4-isothiazolin-3-one 50mgFluorescent brightener (4,4'-diaminostilbene type) 1.0gAdd water 1000100O87, 5. Adjust pH with potassium hydroxide or hydrochloric acid.

A comparative sensitive material sample was also obtained in the same manner using the comparative support sample.

These three types of samples were exposed imagewise as follows and were subjected to development process A. Compared to the images obtained with the comparative sensitive material samples, the images obtained with the present invention had higher bareness and extremely sharpness. It was excellent. In particular, gradation reproducibility in dark areas has been improved.

Example 5 Support sample 2 was obtained by appropriately imparting cylinder patterning in the rolling process in Example 1. Further, support sample 3 was obtained by applying even less patterning to the cylinder.

Further, according to Example 3, a color reversal photographic paper using support sample 11EI 1 was obtained. Sample 4 was obtained through elementary development without exposure.

Next, using Hitachi's new Color Analyzer Model 307, the opposite light from the light source was removed by setting a trap at an angle of about 10° in the integrating sphere, and using a barium sulfate white plate as a standard, support sample 1 was used.
The spectral reflectances of ~4 and a were measured. This is shown in FIG.

Moreover, the spectral reflectance at 550 nm light is shown.

Example 6 Surface irregularities of support samples 1, 2, and 3 (all without undercoat layer) were measured using a cross-sectional shape measuring device (Elonics).
．． Measured with an accuracy of 1μ. The results are shown in Figures 2 and 3, respectively.
It is shown in Fig. 4. The number of unevenness (frequency) is for support sample 1.
is 100±50 pieces/mm, and support sample 2 is 180±50 pieces/mm.
Support Sample 3 was 600±100 pieces/mtn.

Example 7 A photosensitive development material having the layer structure shown in Table 4 was produced. Emulsions (I), (VI) and (■), organic silver salt (1), (
Details of the manufacturing method 2) will be described later. Next, a dye fixing material was prepared by coating the support according to the present invention with a mordant, and a test was conducted in which a color image was formed on this fixing material by heat development.

High boiling point organic solvent (1)) Dinonyl phosphate water-soluble polymer (super absorbent polymer) (1) S''Gel L-5 (
H) Chemical chemistry C Water-soluble polymer (super absorbent polymer) (2) Surfactant in SO3 (1) Aerosol OT Surfactant (2) Surfactant (3) Surfactant (4) Surfactant ( 5) Surfactant (6) C11 hard M agent 1.2-bis(vinylsulfonylacetamide)ethane silicone oil CHJ CL ['', 112.L'U
[JHUlh Acetylene Compound Reducing Agent (1) Mercapto Compound (1) l Mercapto Compound (2) The method for preparing the emulsion for the 5th sensitizing dye layer will be described.

Emulsion (I) Add the following liquid and ■ to a well-stirred aqueous gelatin solution (20 g of gelatin, 3 g of sodium chloride, and compound I dissolved in 800 ml of water and kept at 65°C).
The liquid was added over 70 minutes. Addition of liquid ■ and liquid ■ l) At the same time as starting the process, add 0.24 g of sensitizing dye (Δ) (120 cc of methanol + 120 cc of water).
) The dye solution dissolved in the solution was added over 60 minutes.

I Solution ■ Solution (Total 600ml) (Total 600ml) AgN
O3(g) too, -K
Br (g) 56
NaCβ (g) 7 Immediately after adding liquids ■ and ■, add 2g of KBr to 20ml of water.
It was dissolved in and added and left for 10 minutes.

After washing with water and desalting, add 25 g of gelatin and 100 ml of water to adjust the pH.
was adjusted to 6.4 and PAg to 7.8.

The resulting emulsion was a cubic dispersed emulsion with a grain size of about 0.5 microns.

This emulsion was kept at 60°C, and the triethylthiolurine accumulated 1.3m.
g; 4-hydroxy-6-methyl-1,3゜3a,7-
Optimal chemical sensitization was achieved by simultaneously adding 100 mg of citrazaindene. Yield was 650g.

The method of making the emulsion for the third layer will be described.

Emulsion (VT) To a well-stirred gelatin aqueous solution (20 g of gelatin, 2 g of sodium chloride, and a compound dissolved in 800 ml of water and kept at 55°C), the following solutions I and II were added over 60 minutes.

Simultaneously with the start of addition of solutions I and II, a dye solution prepared by dissolving 0.16 g of sensitized color chart (B) in 80 ml of methanol was started and was added over a period of 40 minutes.

I liquid ■ Liquid (total 600m f!) (total 600ml
)AgNO3 axis > 100 -KB
r axis) 56 NaCf! axis) 7
After adding the liquid ■ and the liquid ■, let it stand for 10 minutes, let the temperature drop, wash with water, desalt, and then add 25 g of gelatin and 1 ounce of water.
00 mn was added to adjust the pH to 6.5 and the pAg to 7.8.

After adjusting pH and pAg, triethylthio raw material and 4-
Hydroxy-6-methyl-1,3,3a-.

Optimal chemical sensitization was carried out at 60°C by adding 7-chitrazaindene.

The resulting emulsion was a cubic monodisperse emulsion with a grain size of approximately 0.35 μm, and the yield was 650 g.

The method of making the emulsion for the first layer will be described.

Emulsion (■) A well-stirred gelatin aqueous solution (dissolve 20 g of gelatin and 4 g of sodium chloride in 10,100 O? water)
49g of kawaram bromide and chloride)
600 mβ of an aqueous solution containing 10.5 g of IJium and a silver nitrate aqueous solution (0.59 mol of silver nitrate dissolved in 600 mβ of water) were simultaneously added at equal flow rates over 50 minutes. After washing with water and desalting, the pH was adjusted to 6.4 by adding 25 g of gelatin and 200 ml of water, and the optimal chemical amplification was performed using triethylthiourea and 4-hydroxy-6-methyl-1,3,3a-7-titrazaindene. The average particle size was 0.4.
700 g of cubic monodisperse emulsion (1) of μ was obtained.

This article describes how to make organic silver salts.

Organic silver salt (1) This article describes how to make benzotriazole silver emulsion.

28 g of gelatin and 13.2 g of benzotriazole were dissolved in 300 mj of water. This solution was kept at 40°C and stirred. A solution prepared by dissolving 17 g of silver nitrate in 100 mA of water was added to this solution over 2 minutes.

The pH of the benzotriazole silver emulsion was adjusted and allowed to settle to remove excess salt. Thereafter, the pH was adjusted to 6.30, and a yield of 400 g of benzotriazole silver emulsion was obtained.

Organic silver salt (2) 20 g of gelatin and 5.9 g of 4-acetylaminophenylpropiolic acid were mixed with 10 g of 0.1% aqueous sodium hydroxide solution.
00rr+fl and 200ml of ethanol.

This solution was kept at 40°C and stirred.

A solution prepared by dissolving 4.5 g of silver nitrate in 200 ml of water was added to this solution over 5 minutes.

The pH of the dispersion was adjusted and excess salt was removed by settling. Thereafter, the pH was adjusted to 6.3 to obtain a dispersion of organic silver salt (2) in a yield of 300 g.

Next, how to make a gelatin dispersion of a dye-donating substance will be described.

12 g of yellow dye-providing substance (Y-1).

(Y-2) 3g, high boiling point organic solvent (1) 7.5g.

0.3 g of reducing agent (1) and mercapto compound (1)
0.3 g was added and dissolved in 45 ml of ethyl acetate, 100 g of a 10% gelatin solution and 60 ml of a 2.596 aqueous solution of sodium dodecylbenzenesulfonate were stirred and mixed, and then dispersed with a homogenizer at 110,000 rpm for 10 minutes. This dispersion is called a yellow dye-providing substance dispersion.

15 g of magenta dye-donating substance (M), 7.5 g of high boiling point organic solvent (1), 0.3 g of reducing agent (1) and 0.15 g of mercapto compound (1) were added and dissolved in 25 ml of ethyl acetate to give a 10% 100g of gelatin solution, 60mj of 2.5% aqueous solution of sodium dodecylbenzenesulfonate!
After stirring and mixing, use a homogenizer for 10 minutes,
Dispersion was carried out at 0000 rpm. This dispersion is called a dispersion of a magenta dye-providing substance.

15 g of cyan dye-donating substance (C), 7.5 g of high-boiling organic solvent (1), 0.4 g of reducing agent (1), and 0.6 g of mercapto compound (1) were added and dissolved in 40 mβ of ethyl acetate, % gelatin solution and 60 ml of a 2.5% aqueous solution of sodium dodecylbenzenesulfonate, and then mixed with a homogenizer for 10 minutes at 110,000 mL.
Dispersed by rp. This dispersion is called a dispersion of a cyan dye-providing substance.

(Y-1) DC, 61-133”’ (Y-2) (C) Next, we will discuss how to make the dye fixing material.

A dye-fixing material was prepared by coating the photographic support of the present invention having the same gelatin undercoat layer as used in the examples in the composition shown in the table below.

2nd layer Gelatin (0.7 g/m") Hardener* 1 (0.24 g/m2) 1st layer Gelatin (1.4 g/m") Mordant* 2 (2.6 g/m2) Guanidium picrate salt (2.5g/m2) support
Supporter*11.2-Bis(vinylsulfonylacetamido)ethane*2 The multilayered color photosensitive material was exposed to light for 1/10-' second using a xenon 7-ray tube. At that time, exposure was performed through a three-color separation filter of G, R, and IR whose density was continuously changed.

12 cc/m2 of water was supplied to the emulsion surface of the exposed light-sensitive material using a wire bar, and then the material was superimposed on the dye-fixing material so that the film surface was in contact with the material. The temperature of the membrane that absorbed water was 90
Using a heat roller whose temperature is adjusted to ℃,
After heating for 0 seconds, the dye fixing material was peeled off from the photosensitive material, and yellow, magenta, and cyan images were obtained on the dye fixing material corresponding to the three color separation filters of G, R, and IR.

By using the support of the present invention, a transferred color chart image with richer and sharper gradation than when using a conventional paper support laminated on both sides with polyethylene was obtained.

[Brief explanation of the drawing]

FIG. 1 shows the spectral reflectance curve. The cross-sectional shape measurement results are shown in FIGS. 2 to 4. Procedural amendment document Showa year, month, day 4, agent 6, subject of amendment Detailed explanation of the invention in the specification 1
Dark, brief description of drawings and drawing 7, content of amendment (1) The following parts of the specification are corrected as follows. (2) On page 6, line 8 of the specification, "...can be done. In addition," should be corrected as follows. "...can be done. In addition, it is also possible to evaluate the second type diffuse reflective support based on the total reflectance using a spectrophotometer with an integrating sphere." (3) Ibid., p. 10, line 19. Add the following sentence after "...can be done." “The thickness of the support according to the present invention ranges from 50μ to 50μ depending on the application.
It is preferable to set it to 300μ. (4) Ibid. 51
Add the following content between lines 15 and 16 of the page. "Example 8 The diffuse reflectance of the support of the present invention was measured. The support of the present invention prepared in Example 1 (Sample 1) and the comparative sample b (normal resin coated vapor) used in Example 2. was used as a sample for measurement. Light source A was irradiated onto the sample at an angle of 5° from the normal line, and the angular distribution of the scattered light was measured using a goniophotometer (GP-I manufactured by Murakami Color Research Institute).
R type). The results are shown in Figure 5. In the figure,
The relative reflectance (logarithmic scale) is shown in the area above the line between -90° and 90°, and the relative transmittance is shown in the area below the line between -90° and 90''. Solid line a and dashed line is the reflectance of sample 1, solid line C and broken line d are the reflectance of comparative sample S, and solid line C and broken line f are the transmittance of comparative sample S. The reflectance and transmittance shown by the solid line is measured by irradiating the sample with light at an angle of 5° from the normal line in the longitudinal direction of the support sample.The reflectance and transmittance shown by the broken line are the values of the sample. This was measured by irradiating the sample with light at an angle of 5° from the normal in the vertical direction at the time of preparation.As shown in Figure 5, the support sample 1) of the present invention was Compared to the support of the present invention (comparative sample b), it has a stronger reflectance within the viewing angle range (±40°) that is important for observing color photographs. No light was observed, and the anisotropy was relatively small.'' (5) Add the following sentence after ``indicates...'' on page 51, line 18 of the same book. "Figure 5 shows the angular distribution dependence of the diffusely reflected light of samples 1 and b." (6) Figure 5 is newly added as shown in the attached sheet. Loincloth 5 Photographic procedure amendment ■, Indication of case 1985 Patent Application No. 168800 2, Title of invention Photographic support 3, Person making the amendment Relationship to the case Applicant name Title (520) Fuji Photo Film Co., Ltd. 4,
Agent 5, date of amendment order November 17, 1988 6'
? i″E″′ 〒Record: A

Claims (8)

[Claims] (1) Photographic support having a type 2 diffuse reflective surface. (2) A photographic support comprising a solid thin film layer having a type 2 diffusely reflective surface on a substrate. (3) The photographic support according to claim (2), wherein the solid is a metal. (4) Claim No. 3 in which the metal is aluminum, silver, gold, nickel, magnesium, or an alloy thereof.
Photographic support described in Section 1. (5) Claims (2) to (4) in which a thermoplastic resin layer or adhesive layer is provided between the solid thin film layer and the substrate.
) Photographic support according to any one of paragraphs 1 and 2. (6) The second type diffuse reflective surface of the solid thin film layer is a mirror surface of the solid thin film layer with irregularities of about 0.1 to 2000 spots/mm. Photographic support according to any one of paragraph (5). (7) Claims (2) to (2) in which the substrate is paper.
The photographic support according to any one of item 6). (8) A photographic support according to claim (7), wherein a thermoplastic resin layer or a water-resistant resin layer is provided on the opposite side of the substrate to the surface on which the solid thin film layer is provided.