JPS6324247A - Photographic substrate body - Google Patents

Abstract

PURPOSE:To obtain the titled body having improved brightness and saturation of an image and capable of enlarging an angle which can be sufficiently observed the image by mounting a filling layer composed of solid powders having the surface of a 2nd kind diffused reflection on a substrate. CONSTITUTION:The titled substrate body is composed of a substrate body having the surface of the 2nd kind diffused reflection or a substrate body obtd. by mounting the filling layer composed of solid fine powders having the surface of the 2nd kind diffused reflection on the substrate. The 2nd kind diffused reflection means the reflection at a rough surface which has a small slope boundary, such as a conventional ground glass or a polished metal surface. Namely, the 2nd diffused reflection means the reflection having a small boundary due to a small unevenness on a smooth surface which effects mirror reflection. In this case, the diffused reflection is considered to be a bundle of positive reflecting lights at small reflecting surfaces. In order to make the surface of the filling layer composed of the solid powders to the 2nd diffused reflection, the mean particle size of the solid powders is preferably 0.01-100mu. In case that the solid particle is composed of aluminium powders, the particle size of said powders is 1-100mu, preferably 5-70mu.

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, efforts have been made to include an anti-irradiation dye in 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. In this method, a layer of Agl is created by blowing iodine gas onto well-polished silver and causing a chemical reaction.
After image exposure, it is developed with mercury gas to create a photographic image. However, since various chemical treatments are performed without using a well-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 masks the silver surface. Because of the adhesion, the brightness and sharpness of the image was irreversible.

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. Other objectives will be apparent from the description.

[Means for solving problems]

The above aspects of the present invention are directed to a support having a type 2 diffusely reflective surface or a photographic support comprising a substrate provided with a packed layer of solid fine powder having a type 2 diffusely reflective surface. was achieved.

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. On the other hand, diffuse reflection refers to paper, painted surfaces,
Reflection from wood and walls causes parallel incident light to be reflected not only in the regular 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 thought of as a collection of specularly reflected light from small reflective 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 by the difference in reflectance of the smooth surface of the material. The reflectance of the smooth surface of the material that gives the first type diffuse reflectance is the second type.
Generally lower than the reflectance of a smooth surface of a material that provides diffuse reflectance. In the present invention, type 2 diffuse reflectance refers to a case where the reflectance R is 0.5 or more. Therefore, the second
The seed diffusely reflective surface has a surface area of 0.5 or more, more preferably 0.5 or more.
It has a reflectance of 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. Incidentally, type 1 diffuse reflectance refers to the reflectivity in which when a light-transmitting solid is made into a fine powder, most of the light transmitted through the solid becomes diffused light through total reflection and multiple reflections. .

Specular reflection and diffuse reflection can be distinguished based on the difference in spectral reflectance. Here, the spectral reflectance is measured using monochromatic light of 550 nm incident at an incident angle of 7 degrees from the normal direction of the test sample, and the angle of view is 10 degrees centered on the direction of regular reflection 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 spectral reflectance (measured with monochromatic light of 550 nm) of 5% or more. Therefore, the type 2 diffuse reflective surface of the present invention refers to one that exhibits a spectral reflectance (measured with monochromatic light of 550 nm) 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. In the present invention, 550 nm is representative of the green region with high visual sensitivity.
Monochromatic light was used. In addition, in order to accurately measure the spectral reflectance of the second type diffuse reflective material, the measurement is performed without adding dye or pigment to the resin.

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.

A packed layer of solid powder providing a type 2 diffusely reflective surface is
Composed of solid powder and resin.

The solid powder is preferably a metal powder. For metals, F, Benford et al. J, Opt, Soc.

Amer, Vol. 32, pp. 174-184 (1942), such as silver, aluminum, gold, copper,
Chromium nickel, platinum, alloys thereof such as aluminum/magnesium alloy, aluminum/copper, aluminum/antimony, sinchu, etc. are used. In addition to metal powders, inorganic powders can also be suitably used. Examples of the inorganic substance powder include pieces of natural mica and pieces of fish scales.

In the present invention, in order to make the surface of the solid powder packed layer have type 2 diffuse reflection, the average particle size of the solid powder is preferably about 0.01 to 100 μm. In particular, in the case of aluminum, 1 to 100μ, preferably 5 to 70μ
Preferably it is μ. In addition, in the case of silver, O,1~
Preferably it is 100μ. 0,01 for gold
It is preferable that it is 100μ.

In addition, resins include water-soluble polymers (e.g., gelatin, etc.), aqueous latexes (e.g., styrene-butadiene,
acrylonitrile-butadiene, acrylic, styrene-acrylic, vinylidene chloride, vinegar-vinyl chloride, ethylene-vinyl acetate, etc.), organic solvent-based resin (e.g., acrylic, polyester, cellulose, polystyrene, polychloride) (vinyl type, polyvinyl acetate type, etc.).

In the present invention, the above-mentioned resin and the above-mentioned solid powder are mixed, and then the mixture is coated on a substrate using a known method such as a knife coater, and if necessary, dried. A support can be obtained. still,
Preferably, the particles of the solid powder are coated with a resin in advance and mixed with the resin.

In addition, as a different method, photopolymerizable monomers or oligomers (for example, acroyl-based monomers having unsaturated double bonds,
A metaacroyl-based or acrylamide-based compound, a compound containing an allyl group, a vinyl ether group, a vinyl thioether group, etc., or an unsaturated polyester-based (molecular ff 11,000 to 20,000) compound) is mixed with the solid powder, and the mixture is used as a substrate. The photographic support of the present invention can also be obtained by coating it on top and forming a film by irradiating it with an electron beam or the like. In the present invention, for example, pages 235 to 236 and A of the photosensitive resin data collection published by Sogo Kagaku Kenkyusho (1968).

Franken, Fatipec Congress, 1
Compounds described in Vol. 1, No. 19 (1972) and the like can be suitably used as the photopolymerizable monomer or oligomer.

The irregularities on the outer surface of the solid powder in the packed bed of solid powder 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 with unevenness can be measured as the frequency of surface roughness, and preferably the average frequency is 0.1 to 2.
000 pieces/mm, more preferably 1 to 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, visibility becomes much easier, and the brightness of image highlights, image saturation, and gradation reproducibility of dark areas are significantly improved. Additionally, 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,
It is also possible to use as a substrate a material obtained by laminating aluminum foil which has been previously textured using a polyethylene layer of RC-paper and low-density polyethylene.

The support according to the present invention can be provided with a silver halide emulsion layer via an undercoat layer. The undercoat layer is obtained using a thermoplastic resin such as polyethylene or polypropylene, or an ionomer l1tq= 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.

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 photosensitive material can be prepared by providing two or more light-sensitive silver halide emulsion layers each having a different spectral sensitivity and each having a different color coupler. . 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 according to the present invention and diffusing and transferring color-developing and releasing dyes. 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
It is also applicable to heat development, photosensitive materials and/or dye-fixing materials (image-receiving materials) described in Japanese Patent Application No. 18443, Japanese Patent Application No. 60-79709, and the like.

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

Example 1 11.3 g of polyethylene and 2.8 g of aluminum metal powder (average particle size 70 μm) were mixed, and the resulting mixture was then laminated onto white photographic paper to form a type 2 diffuse reflective surface. A photographic support having the following properties was obtained. The coating amount of aluminum metal powder is 0.1.0.5.1, respectively.
．． 5.10.12 g/m2. These were designated as samples 1.2.3.4.5.6, respectively.

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 evaporation apparatus, and a vapor-deposited film of aluminum with a thickness of 100 μm was formed on the substrate surface at a vacuum degree of 10-' Torr. did. Coat this with low density polyethylene to a thickness of 30 μm.
A polyethylene resin layer was formed to obtain a comparative sample a.

Samples 1 to 6, particularly samples 4 and 5, which are supports of the present invention, had no light reflection compared to comparative sample a, had metallic shine, and had a wider viewing angle.

Also, 2.8g of aluminum metal powder was replaced with 2.8g of aluminum metal powder.
Even when photographic supports prepared in exactly the same manner except that 0 g or 3.7 g were used, similar effects were obtained.

Example 2 Using support samples 1 to 6 obtained in Example 1, after corona discharge treatment was applied to the surface on which the aluminum filling layer was provided, gelatin and the hardening agent 1-oxy-3,5- An undercoat treatment was performed using dichloro-3-) lithison sodium, and a silver chlorobromide emulsion layer (halogen composition: AgC 167%, average grain size: 0.4 μm) used for photographic paper was provided thereon, and a protective layer was further provided. The silver coating amount was 2.1 g/m''. After image exposure, development was performed using developer D-72 (1:2 dilution), and fixation and washing 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, washed with water, and a single image was obtained.

The images obtained from Support Samples 1 to 6 had brighter highlights and richer and sharper gradations in dark areas than those of Support Comparison Samples. Surprisingly, maximum density and shadow tightness were not inferior.

Further, the sensitive material using Support Sample 4 was embedded and hardened in an epoxy resin in order to examine the irregularities on the outer surface of the aluminum. An ultrathin section of the cross section of the support was taken, and its electron microscopic image was observed using an electron microscope. As a result, there were 257 irregularities on the outer surface.

Example 3 Using support sample 5 and comparative samples a and b, patent application No. 1986-
A color reversal photographic paper was obtained according to Example 1 of 99122.

(After exposure, ordinary reversal development, that is, first development, washing with water, reversal exposure, color development, washing with water, bleach-fixing, and washing with water was performed to obtain an image).

According to the present invention, Sample 5 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 in inverted color photographic paper, has become richer, and the overall macro gradation has become softer. However, thanks to improved sharpness, the micro gradation has become harder, resulting in an extremely lovely image with a texture. was gotten.

Example 4 100 g of polyethylene and alloy powder of aluminum and magnesium (aluminum:magnesium - weight ratio 98;
2. Mix 30 g of powder with an average particle size of 10 μm and the surface of the powder coated with polymethactalic acid, and then laminate the resulting mixture onto a white photographic base paper whose back side is lined with polyethylene. Sample 7 of a photographic support having a diffusely reflective surface was obtained. The amount of alloy applied is 10
g7 m2.

Silver halide emulsion (1) used in the examples of the present invention was prepared as follows.

(1 liquid) (2 liquid) Sulfuric acid (IN) 24cc (3 liquids) The following silver halide solvent (1%) '3ccCH.

” H3 (4 liquids) LH20 was added and 200 cc (5 liquids) (6 liquids) (7 liquids) (1 liquid) was heated to 56°C, and (2 liquids) and (3 liquids) were added. Thereafter, (liquid 4) and (liquid 5) were added simultaneously over a period of 30 minutes. After a further 10 minutes, (liquid 6) and (liquid 7) were added simultaneously over a period of about 20 minutes. After 5 minutes of addition, the temperature was lowered and desilvering was performed. Add water and dispersed gelatin and adjust pH to 6.2
According to the average particle size 0.45 μm1 coefficient of variation (
Standard deviation divided by average particle size + S/d) 0.0
8. A monodispersed cubic silver chlorobromide emulsion containing 70 mol % of silver bromide was obtained.

IJium thiosulfate was added to this emulsion to perform optimal chemical sensitization.

Next, silver halide emulsions (2) (3) with different silver chloride contents
) (4), the above 4 and 6 liquids of KB'r, Na(
By changing the amount of l and the addition time of liquids 4 and 5 as shown in Table 1, the result was 811'lJ.

Table 1 Average grain size of silver halide emulsions (1) to (4),
The coefficient of variation and halogen composition are shown in Table 2.

Table 2 Obtained.

Comparative support (B): On the surface of white base paper for photography, white fine powder of titanium oxide was mixed in polyethylene in advance to a concentration of about 4 g/m2 after lamination, and on the back side of white base paper, polyethylene was used, and both sides were coated with polyethylene. Laminating it at the same time is a disgrace to RC-paper. A gelatin undercoat layer was formed on the white polyethylene surface along with the support (I).

Layers 1 to 7 shown in Table 1 were layered on each support to obtain a color photosensitive material.

1st layer: Silver halide emulsion (4) with blue-sensitive sensitizing dye (a
) was spectrally sensitized by adding 7.0×10 −' mol per mol of AgX. Further, yellow coupler (d) and color image stabilizer (e) were mixed, dissolved and dispersed in solvent (f), and a predetermined amount was added. This was applied as the first layer.

Third layer: silver halide emulsion (3) with green-sensitive sensitizing dye (b)
) was spectrally sensitized by adding 4.0XIO-' moles per mole of AgX. Furthermore, a magenta coupler (h) and a color image stabilizer (i) were mixed and dissolved in a solvent (''), dispersed, and added in a predetermined amount. This was applied as the third layer.

5th layer: Silver halide emulsion (2) with red-sensitive sensitizing dye (c
) was spectrally sensitized by adding 1.0XlO-' mole per mole of AgX. Furthermore, a cyan coupler (n) and a color image stabilizer (○) were mixed and dissolved in a solvent (f), dispersed, and a predetermined amount was added. This was applied to form the fifth layer, and the coating solution was applied in the same manner to the second, fourth, sixth, and seventh layers.

On the undercoat layer of the support, the first layer, second layer, third layer, fourth layer,
The 5th layer, the 6th layer and the 7th layer were coated to obtain a sample 7 and a comparative sample.

The above sample was subjected to sensitometric exposure using a light source at 2854° through a three-color analysis filter of blue, green, and red, or image exposure for printing by enlarging it through a negative film.

Through each process of color development, bleach-fixing, and rinsing, a photographic image is produced in just one frame.

Development Prescription A 35℃ 45 seconds bleach fixing
Prescription A 35℃ 45 seconds rinse Prescription A, 2
8-35℃ 1 minute 30 seconds Color developer A Water 80
0cc diethylenetriaminepentaacetic acid 1.0g
Sodium sulfite 0.2gN, N
-Diethylhydroxylamine 4.2 g Potassium bromide 0.6 g Sodium chloride
1.5g triethanolamine
8.0g potassium carbonate
30 g N-ethyl-N-(β-methanesulfonamide ethylamino)-3-methyl-4-aminoaniline sulfate 4.5 g 4'-diaminostilbene optical brightener (Sumitomo Chemical @ Whitex 4) 2.
Add 0g water to 1000cc
At KOH ptl 10.25 Bleach fixer formulation A Ammonium thiosulfate (54wt%) 50ml 15g Na2SO3 NH41:Fe (III) (EDTA)']
55 gEDTA・2Na
4 g glacial acetic acid
Add 8.61g water to make the total amount
1000 ml (pH 5.4) Rinse liquid formulation A EDTA ・2Na ・2H 200.4 g Add water to make a total volume of 1000 ml (pfl 5.4
) According to the naked eye observation of the photographic image, the chroma saturation of yellow and magenta is extremely superior compared to the comparative sample. In particular, a surprising improvement in sharpness was shown. Additionally, gradation details in dark areas were well reproduced. Next, the results are illustrated below as photographic physical properties.

Also, instead of (2) in the silver halide emulsion of the fifth layer, (1
), and (h) of the magenta coupler in the third layer.
Sample 8 was obtained in the same manner except that (p) was used instead of (p).

Photographs were obtained by printing in the same manner. The photo of sample 8 is
The color saturation was particularly high, and the reproduction of red tones was excellent.

(a) Blue-sensitive sensitizing dye (b) D-sensitive sensitizing dye (d) Yellow coupler (e) Color image stabilizer (f) Solvent (g) Color mixing prevention agent H 01) Masenta coupler 2 (i) Color image stabilizer (J) Solvent Example 5 A photothermographic 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) Trinonyl phosphate water-soluble polymer (super absorbent polymer) (1) Sumikagel L-5
(H) Sumitomo Chemical ■ Water-soluble polymer (super absorbent polymer) (2) SO, surfactant (1) Aerosol ○T surfactant (2) H3 surfactant (3) surfactant (4) Surfactant (5) Surfactant (6) C) 13 fifitlu agent 1, 2-bis(vinylsulfonylacetamide) ethane silicone oil CH3[1:l+3[:1I3CH3 111I CI(3CH3C,H2,[l'00HCH3 Acetylene Compound Reducing Agent (1) Mercapto Compound (1) ■ Mercapto Compound (2) This article describes how to make an emulsion for the Masu-Shishokuna 5th layer.

Emulsion (1) Add the following solution (■) and H to a well-stirred gelatin aqueous solution (9Qg of gelatin, 3g of sodium chloride, and compound I dissolved in 800ml of water and kept at 65°C).
The liquid was added over 70 minutes. Sensitizing dye (Δ) is added at the same time as the addition of ■ and ■ solutions Et0, 24
A dye solution prepared by dissolving 1.5 g of 120 cc of methanol and 120 cc of water was added over a period of 60 minutes.

I liquid ■ Liquid (total 600m n) (total 600m f
! )AgNO3 (g) 100 - KBr axis)56 NaCj2 (g) ? Immediately after adding liquid ■ and liquid ■, add 2 g of KBr to 20 g of water.
It was dissolved in mβ, added, and left for 10 minutes.

After washing and desalting, gelatin 25g and water 100rrH! was added to adjust the pH to 6.4 and the 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 1.3 m of triethylthiourea was added.
g; 4-hydroxy-6-methyl-1,3゜3a,7-
Optimal chemical sensitization was achieved by adding 100 mg of citrazaindene at the same time. Yield was 650g.

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

Emulsion (Vl) Add the following R solution and ■
The liquid was added over 60 minutes.

At the same time as the addition of solutions (1) and (2) started, a dye solution in which 0.16 g of sensitizing dye (B) was dissolved in 80 mA of methanol was started and was added over 40 minutes.

I liquid ■ Liquid (total 600m!!) (total 600m
l)AgNO3 (g) 100 - KBr (g) 56 NaCβ axis) 7 After the addition of liquid ■ and liquid ■, leave it for 10 minutes, then let the temperature drop,
Wash with water and desalinate, then add 25g of gelatin and 100g of water.
mj2 was added to adjust the pH to 6.5 and the pAg to 7.8.

After adjusting pHSpAg, triethylthiourea and 4-
Hydroxy-6-methyl 1,3.3a,7-chitrazaindene was added and chemically sensitized optimally at 60°C.

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 (■) Add 49% of potassium bromide to a well-stirred aqueous gelatin solution (20g of gelatin, 4g of sodium chloride, and H3 dissolved in 10100O of water and kept warm at 60°C).
600 g of an aqueous solution containing 10.5 g of sodium chloride
mβ and silver nitrate aqueous solution (silver nitrate 0.59 in 600 mβ water
mol) was added at the same time at an equal flow rate over 50 minutes. After washing with water and desalting, gelatin 25g and water 200mβ
was added to adjust the pH to 6.4, and optimal chemical sensitization was performed using triethylthiourea and 4-hydroquine-6-methyl-1,3,3a-7-titrazaindene, with an average of 1
'Z? MO, 4μ cubic monodisperse emulsion (I) 700
I got g.

This article describes how to make organic silver salts.

Organic silver salt (1) benzo) How to make IJ azole silver emulsion'',) 2
Vero.

28 g of gelatin and 13.2 g of benzotriazole were dissolved in 300 mβ of water. This solution was kept at 40°C and stirred. A solution prepared by dissolving 17 g of silver nitrate in 100 mβ 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.
00r+l 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 rr+j2 of water was added to this solution over a period of 5 minutes.

The pH of the dispersion was adjusted and excess salt was removed by settling. After this, the pH was adjusted to 6.3, and a dispersion of organic silver salt (2) with a yield of 300 g was prepared.

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

12 g of yellow dye-donating substance (Y-1), (Y-1
) 3g, high boiling point organic solvent (1) 7.5g, reducing agent (1)
0.3g, and 0.3g of mercapto compound (1) in 45mf of ethyl acetate! , add and dissolve 100 g of 10% gelatin solution and 2. of sodium dodecylbenzenesulfonate.
After stirring and mixing with 60 ml of a 5% aqueous solution, the mixture was dispersed using 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 mixed with 25 mf of ethyl acetate.
Add and dissolve 100g of 10% gelatin solution in f1,
2.5% aqueous solution of sodium dodecylbenzenesulfonate 6
After stirring and mixing with 0ml, the mixture was dispersed using a homogenizer at 110,000 rpm for 10 minutes. 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 mA of ethyl acetate, % gelatin solution and 60 ml of a 2.5% aqueous solution of sodium dodecylbenzenesulfonate.
Dispersed at 'pm. This dispersion is called a dispersion of a cyan dye-providing substance.

(Y-1-) DC,,l+,,”] (Y-2) 1] C1cllzs”’ F]C181133('' (C) fil+ Next, we will discuss how to make the color patch fixing material.

A dye-fixing material was prepared by coating on the photographic support of the present invention having the same gelatin subbing layer as used in Example 2 according to the composition shown in the table below.

2nd layer Gelatin (0.7g/m”) Hardener*1 (0.24g/m2) 1st layer Gelatin (1.4g/m2) Mordant*2 (2.6g/m2) Guanidium picrate salt ( 2.5g/m2) support
Supporter *1 1,2-bis(vinylsulfonylacetamido)ethane *2 The multilayered color photosensitive material was exposed to light for 1/10-' second using a xenon flood 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/m' 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 ℃,
When the dye fixing material was peeled off from the blank photosensitive material heated for 0 seconds, 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 dye image with richer gradation and sharpness was obtained than when using a conventional paper support laminated on both sides with polyethylene.

Procedural amendment 62, 3. CoO Showa Year, Month, Day 3, Relationship with the person making the amendment Applicant name (520) Fuji Photo Film Co., Ltd. 4, Agent 5, Date of amendment order Voluntary 6, Subject of amendment Details of the invention in the description Explanation (1) The following parts of the specification are corrected as follows.

(2) On page 7, line 8 of the specification, ".old..identical property" is corrected as follows.

"...There is. Type 2 diffuse reflective support can also be evaluated by the total reflectance using a spectrophotometer with an integrating sphere. The same properties" (3) Ibid., p. 12, line 16. Add the following sentence after “...can be done.”

"Also, depending on the application, such as postcards, sticker prints, copy materials, etc., a support with a thickness of about 50μ to 300μ is used." (4) The chemical formula of cyan coupler (n) on page 32 of the same book is shown below. Correct it as follows.

r C5fLz(t)α
(5) The chemical formula of (p) magenta coupler on page 32 of the same book is corrected as follows.

Claims (9)

[Claims] (1) A photographic support comprising, on a substrate, a packed layer of solid powder having a surface of type 2 diffuse reflection. (2) The photographic support according to claim 1, wherein the solid powder packed layer is composed of solid powder and resin. (3) The photographic support according to claim 1 or 2, wherein the solid powder is a metal powder. (4) The photographic support according to claim 3, wherein the metal powder is a powder of aluminum, silver, gold, nickel, magnesium, or an alloy thereof. (5) The photographic support according to claim 3 or 4, wherein the metal powder has an average particle diameter of 0.01 to 100μ. (6) The photographic support according to claim 2, wherein the resin is a water-resistant resin. (7) Claims 1 to 5 in which a thermoplastic resin layer or an adhesive layer is provided between the solid powder filling layer and the substrate.
Photographic support according to any one of paragraphs. (8) The photographic support according to any one of claims 1 to 6, wherein the substrate is paper. (9) 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 from which the filled layer of solid fine powder is provided.