JPH02127637A - Method for processing direct positive silver halide photographic sensitive material - Google Patents

Abstract

PURPOSE:To allow rapid processing of the direct positive silver halide photographic sensitive material while maintaining the balance of the white ground and the max. density by specifying the processing temp. and processing time of a development processing. CONSTITUTION:This photosensitive material has at least one layer of silver halide emulsion layers contg. internal latent image type silver halide particles, the particle surfaces of which are not previously fogged. A direct positive image is obtd. on this material by subjecting the material to image exposing then to a surface development after subjecting the same to a fogging processing and/or during the execution of the fogging processing. The development processing in this case is executed under the conditions of >=40 deg.C processing temp. and <=1 minute processing time. The color developing time at the time of processing the direct positive photosensitive material for colors is preferably within 2 minutes and is further preferably within 1 minute and 30 seconds and more particularly preferably within one minute in order to make rapid processing. The processing time of the photosensitive material is shortened in this way and the image quality is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for processing a direct positive silver halide photographic light-sensitive material, and more particularly to a high temperature rapid processing of an internal latent image type direct positive silver halide photographic light-sensitive material. Regarding the method.

[Background of the invention]

Conventionally known methods for obtaining direct positive images are mainly divided into two types. One type is to obtain a positive image after development by using a silver halide emulsion that has fog nuclei in advance and destroying the fog nuclei or latent image in exposed areas using solarization or the Burschel effect. It is. Another type is
Using an internal latent image type silver halide emulsion that does not produce fog (generally surface fog) until image exposure, fogging treatment (nucleation treatment) is performed after image exposure, and then surface development is performed, or after image exposure A positive image can be obtained by performing surface development while performing fogging treatment.

The above-mentioned fogging treatment may be performed by exposing the entire surface to light, chemically using a fogging agent, using a strong developer, or by heat treatment. The internal latent image type silver halide emulsion is a silver halide photographic emulsion that has photosensitive nuclei mainly inside silver halide crystal grains and forms a latent image inside the grains upon exposure.

Of the above two methods for forming a positive image, the latter type of method generally has higher sensitivity than the former type of method, and is suitable for applications requiring high sensitivity.

Various techniques are known in this technical field. For example, U.S. Patent Nos. 2,592.250, 2,466.957, 2,497,875, and 2
, No. 588,982, No. 3,761,266, No. 3,
The methods described in No. 761,276, No. 3,796.577 and British Patent No. 1,151,363 are known.

Regarding the formation mechanism of positive images, for example, Photographic Science and Engineering (Ph.D.
otographic 5science and en
gineering) vol. 20, p. 158 (1976)
As stated in , it is considered as follows. Photoelectrons generated within the silver halide crystal grains by imagewise exposure are selectively captured inside the grains, forming an internal latent image.

This internal latent image acts as an effective capture center for electrons in the conductive band, so in exposed particles, electrons injected during the subsequent fogging and development process are captured internally and strengthen the latent image. become. In this case, the latent image is all internal and is not developed. - In the particles that have not undergone Kerr image exposure, at least some of the injected electrons are captured on the particle surface and the particles are developed by surface development.

Although it is possible to produce photographic materials that form positive images by using the above-mentioned known techniques, further improvement in photographic performance is desired in order to apply these photographic materials to various photographic fields. There is.

For example, in recent years, it has become possible to directly obtain a positive image on the internal latent image type silver halide color photographic paper or color film using a copying machine using a printed original or a versatile film as the original. In order for such photographic type copying apparatuses to be widely used for various purposes, it is strongly desired to shorten the processing time of photosensitive materials and improve image quality.

Various methods have been used to shorten the processing time of color photographic materials.

Among these, it is useful to variously change the type of silver halide, especially the halide composition, in the light-sensitive material. As is well known, silver chloride has higher ionicity and is more soluble than silver bromide and silver iodide, so the development speed is faster.
Furthermore, the subsequent bleaching and fixing treatments can be performed more quickly. Therefore, using silver halide with a high silver chloride content is advantageous in terms of shortening the processing time.

On the other hand, silver chloride-containing internal latent image type silver halide grains having a core/shell laminated structure are well known. For example, JP-A-47-32820 discloses a structure in which a core of silver bromide (silver iodobromide) is coated with a shell of silver chloride, and a laminated structure in which a layer with a high content of silver chloride is localized. This is disclosed in Japanese Patent Application Laid-open Nos. 50-8524 and 50-38525.

Although increasing the silver chloride content is advantageous as described above, it also has disadvantages such as a relatively high minimum concentration and poor storage stability.

Further, although it is advantageous to shorten the processing time by increasing the pH of the developer, there is a drawback that increasing the pH deteriorates the storage stability of the developer.

[Purpose of the invention]

An object of the present invention is to provide a processing method that can directly process positive silver halide photographic materials quickly while maintaining the balance between white background and maximum density.

[Structure of the invention]

The above object of the present invention is to provide at least one silver halide grain containing an internal latent image type silver halide grain whose grain surface is not fogged in advance.
A method for processing a photographic light-sensitive material having a silver halide emulsion layer in which a positive image is obtained directly by surface development after image exposure, after fogging treatment and/or while performing fogging treatment, the developing method comprising: This is achieved by a method for directly processing a positive silver halide photographic material, which is characterized in that the processing is carried out at a temperature of 40° C. or higher and a processing time of 1 minute or less.

The present invention will be explained in detail below.

The silver halide used in the present invention preferably contains silver chloride from the viewpoint of rapid processability, and examples thereof include silver chloride, silver chlorobromide, silver chloroiodide, silver chloroiodobromide, etc. In the case of core/shell type tR halide grains, silver bromide or silver iodobromide may be used for the core. The silver chloride content based on the total silver halide is preferably 10 mol% or more, more preferably 20 mol% or more.

That is, the silver halide grains used in the present invention may be obtained by any of the acid method, neutral method, and ammonia method. The particles may be grown all at once, or may be grown after seed particles are produced.

Even though the method of creating and growing seed particles is the same,
May be different. A silver halide emulsion containing the silver halide grains may be prepared by simultaneously mixing halide ions and silver ions, or by mixing one of them in a solution in which the other is present.

Also, while considering the critical growth rate of silver halide crystals,
Mix halide ions and silver ions in the pot c7) pH,
It may also be produced by controlling pAg and adding them simultaneously. By this method, 110 silver gemide grains with a regular crystalline shape and nearly uniform grain size can be obtained. Conversion methods can also be used to change the halogen composition of the particles after growth.

The silver halide grains according to the present invention may be composed of at least two types of layers, that is, at least two types of layers having different /% halogen compositions, and the outermost shell layer is at least one of the inner core layers. It may be sufficient to cover only a portion. It may have a so-called core/well structure in which the inner core layer forms the core and the outer shell layer covers the core as a shell, or it may have a structure in which the first layer covers part of the second layer.

The silver halide grains according to the present invention may be composed of three or more types of layers. For example, the first core, which is the most central
Silver halide grains may have a three-layer structure consisting of a layer, an inner core layer covering the layer, and an outer shell layer further covering the inner core layer. Hereinafter, in order to simplify the explanation, a particle with a two-layer structure will be taken up, and the first layer located on the outermost side will be assumed to be an outer shell layer, and the second layer adjacent to it will be assumed to be an inner core layer, but the present invention The silver halide grains are not limited to grains having a two-layer structure.

The silver halide grains forming the inner core layer may have any shape, for example, cubic, octahedral, 12
The particles may be in the shape of a face, a tetradecahedron, or a mixture thereof, or may be a spherical, tabular, or amorphous particle, or an appropriate mixture of these. In carrying out the present invention, the average particle size and particle size distribution of the silver halide grains constituting the inner core layer can vary widely depending on the desired photographic performance, but a narrow particle size distribution is more preferable. Specifically, it is preferable that 90% by weight of the silver halide grains constituting the inner core layer have diameters that are not more than 30% apart from the average grain diameter (7). .

That is, the silver halide grains constituting the inner core layer are preferably substantially monodisperse.

Here, silver halide grains with a monodisperse inner core layer mean that the weight of silver halide grains included within a grain size range of ±20% around an average grain size of 7 in the silver halide grains constituting the inner core layer. It is 60% or more of the total silver halide weight, preferably 70% or more, particularly preferably 80% or more.

Here, the average particle size 7 means the particle size ri at which the cumulative weight Xri3 of particles with particle size ``i'' and ``13'' is maximum (3 significant figures, minimum number of digits is 4 types, 5 people) ) Also,
The grain size here refers to 1 for spherical silver halide grains.
:I is its diameter, and in the case of particles with shapes other than spherical, it is the diameter when its projected image is converted into a circular image with the same area.

Examples of the method for producing the monodisperse core emulsion include, for example, Japanese Patent Publication No. 48-36890, Japanese Patent Application Laid-Open No. 54-48520,
The double jet method disclosed in Japanese Patent No. 54-65521 and the like can be used. In addition to this, 1977-158220
The premix method described in No. 1, etc. can also be used.

The inner core layer preferably has few lattice defects, for example as disclosed in US Pat. No. 2,592,250. Emulsions produced by conversion methods are not suitable as inner core layers. Particles produced by the double jet method while controlling pFl and pAg during production have fewer lattice defects and are preferable as the inner core layer.

The inner core layer can be prepared in the presence of a silver halide solvent. Thioethers shown in US Pat. No. 3,574.628, thiourea derivatives shown in JP-A-55-77737, imidazoles shown in JP-A-54-100717, etc. can be used. In a preferred embodiment of the present invention, ammonia is preferably used as the silver halide solvent.

In the silver halide grains according to the present invention, the outer shell layer preferably covers 50% or more of the surface area of the grains constituting the inner core layer. The outer shell layer can contain silver bromide or silver iodide to the extent that photographic performance is not adversely affected. A portion of the outer shell layer can be converted into silver bromide or silver iodide using a trace amount of water-soluble bromide or iodide.

The outer shell layer can completely cover the inner core layer or can selectively cover a part of the inner core layer, but preferably covers 50% or more of the surface area of the particles constituting the inner core layer. It is preferable. More preferably, the inner core layer is completely covered.

As a method for forming the outer shell layer, the above-mentioned double jet method, premix method, etc. can be used. It is also possible to form the inner core layer by mixing fine grains of silver halide with an emulsion containing grains constituting the inner core layer and performing Ostwald ripening.

In practicing the present invention, the inner core layer of the silver halide grains is chemically sensitized, doped with metal ions, or both, or not at all. It may be something.

As the chemical sensitization, sulfur sensitization, gold sensitization, reduction sensitization, noble metal sensitization, and a combination of these sensitization methods can be employed. As the sulfur sensitizer, thiosulfates, thioureas, thiazoles, rhodanines, and other compounds can be used. Such a method is described, for example, in US Pat.
No. 574,944, No. 1.623,499, No. 2, 4
No. 10,689, No. 3,656.955, etc.

The inner core layer of silver halide grains used in carrying out the present invention is, for example, US Pat. No. 2,399,083;
As described in No. 597,856 and No. 2,642,361, sensitization can be carried out with a water-soluble gold compound or with a reduction sensitizer.

Such methods are described, for example, in U.S. Pat.
．． No. 850, No. 2,518,698, No. 2.983,
Reference can be made to the description in No. 610 and the like.

Furthermore, noble metal sensitization can also be carried out using noble metal compounds such as platinum, iridium, palladium, and the like. Such methods are described, for example, in U.S. Pat.
Reference may also be made to the descriptions in No. 8,060 and British Patent No. 618.061.

Additionally, the inner core layer of the silver halide grains can be doped with metal ions. To dope the inner core layer with metal ions, the metal ions can be added as water-soluble salts, for example, during any process of forming particles of the inner core layer. Preferred specific examples of metal ions include metal ions such as iridium, lead, antimony, bismuth, gold, osmium, and rhodium. These metal ions preferably range from 1X10 to IX10-' per mole of silver.
Used in molar concentrations.

However, those used as the inner core layer of silver halide grains are
The material may not be subjected to the above-mentioned chemical sensitization treatment or metal ion doping.

In this case, it is thought that photosensitive centers are generated by forming crystal strain at the interface between the inner core layer and the outer shell layer during the process of covering the particles in the inner core layer with the outer shell layer. U.S. Patent No. 3°935.014, No. 3
, 957.488.

The silver halide emulsion used in the present invention can be chemically sensitized by a conventional method at any stage of production. Furthermore, the silver halide grains of the present invention can store polyvalent metal ions inside the grains. Preferred specific examples of polyvalent metal ions include metal ions such as iridium, lead, antimony, bismuth, gold, platinum, osmium, and rhodium.

In the silver halide grains according to the present invention, it is preferable that the grain surface is not chemically sensitized, or even if it is sensitized, it is only to a small extent.

In the present invention, the meaning that the particle surface is not prefogged means that a test piece coated with the emulsion used in the present invention at a concentration of 35 mgAg/cglffi on a transparent film support was coated with the following surface developer without exposure. It means that the density obtained when developing at 20°C for 10 minutes at A is not more than 0°6, preferably 0.4.

Surface developer A metric

2.5gQ-ascorbic acid
Add 10 g of sodium metaborate (tetrahydrate), 35 g of potassium bromide, and 1 g of water. It gives sufficient density when developed with B.

meter

2g Sodium sulfite (anhydrous) 90g Hydroquinone 8g Sodium carbonate (l hydrate) 52.5g Potassium bromide 5g Potassium iodide 0.5g Add water
lQTo be more specific,
A portion of the specimen was exposed to a light intensity scale for a defined period of time up to about 1 second and then incubated in internal developer B at 20°C.
at least 5 times, preferably at least at least IO@, when developed for 10 minutes at It shows the maximum concentration of

The silver halide emulsion according to the present invention can be optically sensitized using commonly used sensitizing dyes. Combinations of sensitizing dyes used for supersensitization of internal latent image type silver halide emulsions, negative-working silver halide emulsions, etc. are also useful for the silver halide emulsions of the present invention. RD for sensitizing dyes
Reference may be made to No. 15162 and No. 17643.

Further, chemical sensitization may be carried out, and can be carried out by ordinary sulfur sensitization, selenium sensitization, reduction sensitization, noble metal sensitization, or a combination thereof. Useful surface chemical sensitization is described in US Pat. No. 3,761,276.

The photographic light-sensitive material of the present invention is image exposed (photographed) by a conventional method.
After that, a positive image can be easily obtained directly by surface development. That is, the main step of directly creating a positive image is to remove fogging nuclei by chemical or optical action after image exposure of the photographic light-sensitive material having an internal latent image type silver halide emulsion layer that has not been fogged in advance. After applying a process to generate a , that is, a fogging process, and/or
Alternatively, surface development is performed while performing fogging treatment. Here, the fogging treatment can be carried out using a compound that provides full exposure or generates fogging nuclei, that is, a fogging agent.

In the present invention, the entire surface exposure is carried out by immersing or moistening the image-exposed photosensitive material in a developer or other aqueous solution, and then uniformly exposing the entire surface to light. The light source used here may be any light within the wavelength range to which the photographic light-sensitive material is sensitive; high-intensity light such as flash light may be applied for a short period of time, or weak light may be applied for a long period of time. . Further, the total exposure time can be varied over a wide range depending on the photographic material, development processing conditions, type of light source used, etc. so as to ultimately obtain the best positive image.

A wide variety of compounds can be used as the fogging agent used in the present invention, and it is sufficient that the fogging agent is present during the development process. (preferably in the silver oxide emulsion layer), or may be contained in the developer or the processing solution prior to development. The amount used can vary widely depending on the purpose, and the preferred amount is 1 -1,500 mg per mole of silver halide when added to a silver halide emulsion layer, preferably 10 to 100 mg.
l, 000 mg. Further, when added to a processing solution such as a developer, the preferable amount is 0. O1~5g/12
．． Particularly preferred is 0.05 to Ig/7+.

Fogging agents used in the present invention include, for example, U.S. Pat.
563.785, hydrazines described in 2,588.982, or U.S. Pat. No. 3,227,5
Hydrazide or hydrazone compounds described in US Pat. No. 52: US Pat. No. 3,615.615, US Pat. No. 3,718.47
No. 9, No. 3,719.494, No. 3,734.738
No. 4 and heterocycle No. 4 described in No. 3,759,901
Further examples include compounds having an adsorption group on the silver halide surface, such as acylhydrazinophenylthioureas described in US Pat. No. 4,030,925.

Moreover, these fogging agents can also be used in combination. For example, RD No. 15162 describes the use of a non-adsorption type fogging agent in combination with an adsorption type fogging agent, and this combination technique is also effective in the present invention.

As the fogging agent used in the present invention, either an adsorption type or a non-adsorption type can be used, and they can also be used in combination.

Specific examples of useful fogging agents include phenylhydrazine hydrochloride, ■-formyl-2-(4-methylphenyl)hydrazine, l-acetyl-2-7enylhydrazine, l-
hydrazine compounds such as -methylsulfonyl-2-(3-7enylsulfamidophenyl)hydrazine, 3-(
N-f such as 2-formylethyl)-2-methylbenzothiazolium bromide, 2-methyl-3-[3-(phenylhydrazino)propyl]benzothiazolium bromide, etc.
i-substituted quaternary cycloammonium salt; 5-(1-ethylnaphtho[1,2-bl thiazolin-2-ylideneethylidene] -1-(2-phenylcarbazoyl)methyl-
3-(4-sulfamoylphenyl)-2-thiohydantoin, 5-(3-ethyl-2-penzothiazolinylidene)3-(4-(2-formylhydrazino)phenyl)rhodanine, i ( 4-(2-formylhydrazino)
Phenyl-3-phenylthiourea, 1,3-bis(4
-(2-formylhydrazino)phenylcothiourea and the like.

After image exposure, the photographic light-sensitive material having a silver halide emulsion layer according to the present invention is subjected to full-surface exposure or surface development treatment in the presence of a fogging agent to directly form a positive image. This surface development processing method means processing with a developer substantially free of silver halide solvent.

Developers that can be used in the surface developer used for developing the photographic light-sensitive material according to the present invention include common silver halide developers, such as polyhydroxybenzenes such as hydroquinone, aminophenols, and 3-pyrazolidones. , ascorbic acid and its derivatives, reductones, phenylenediamines, etc., or mixtures thereof. Specifically, hydroquinone, aminophenol, N
-Methylaminophenol, l-phenyl-3-pyrazolidone, l-7enyl-4,4-dimethyl-3-pyrazolidone, ■-phenyl-4-methyl-4-hydroxymethyl-3-pyrazolidone, ascorbic acid, N,N- diethyl-p-phenylenediamine, diethylamino-o-
Toluidine, 4-ami7-3-methyl-N=ethyl-N
-(β-methanesul)onamidoethyl)aniline, 4
-Amino-3-methyl-N-ethyl-N-(β-hydroxyethyl)aniline and the like. These developers can also be included in the emulsion in advance and allowed to act on the silver halide during immersion in a high pH aqueous solution.

The developer used in the present invention can further contain specific antifoggants and development inhibitors, or these developer additives can be optionally incorporated into the constituent layers of the photographic material. It is.

Depending on the purpose, various photographic additives such as wetting agents, film property improvers, and coating aids may be added to the silver halide emulsion according to the present invention.

Other photographic additives include gelatin plasticizers, surfactants, ultraviolet absorbers, pH adjusters, antioxidants, antistatic agents, thickeners, graininess improvers, dyes, mordants, brighteners, and developers. Speed modifiers, matting agents, etc. may also be used.

The silver halide emulsion prepared as described above is coated on a support via a subbing layer, an antihalation layer, a filter layer, etc., as necessary, to form an internal latent image type silver halide photographic light-sensitive material of the present invention. obtain.

It is useful to apply the photographic light-sensitive material according to the present invention to color applications, and in this case it is preferable to include cyan, magenta and yellow dye image-forming couplers in the silver halide emulsion. As the coupler, commonly used couplers can be used, and a specific example thereof is RD-17643 (197
(December 1979) and No. 18717 (November 1979).

Furthermore, it is useful to use an ultraviolet absorber to prevent the dye image from fading due to short-wavelength actinic rays.

Examples of the support for the photographic material of the present invention include polyethylene terephthalate film, polycarbonate film, polystyrene film, polypropylene film, cellulose acetate film, glass, baryta paper, polyethylene laminate paper, etc., which have been subjected to undercoating as necessary. can be mentioned.

In addition to gelatin, suitable gelatin derivatives can be used as protective colloids or binders in the silver halide emulsion layer according to the present invention, depending on the purpose. Suitable gelatin derivatives include, for example, acylated gelatin, guanidylated gelatin, carbamylated gelatin, cyanoethanolated gelatin, and esterified gelatin.

In addition, in the present invention, other hydrophilic binders (binders) can be included depending on the purpose, and include polyvinyl alcohol, polyvinylpyrrolidone, hydrolyzed polyvinyl acetate, etc. , can be added to constituent layers of photographic light-sensitive materials such as filter layers and backing layers depending on the purpose, and furthermore, the hydrophilic binder can contain a suitable plasticizer, lubricant, etc. depending on the purpose. .

Further, the constituent layers of the photographic light-sensitive material according to the present invention can be hardened with any suitable hardening agent. Examples of these hardeners include chromium salts, zirconiums, aldehyde hardeners such as formaldehyde and mucohalogen acids, halotriazine hardeners, polyepoxy compounds, ethyleneimine hardeners, vinyl sulfone hardeners, and acryloyl hardeners.

Further, the photographic light-sensitive material according to the present invention has, on a support, at least one photosensitive emulsion layer containing the internal latent image type silver halide grains according to the present invention, as well as a filter layer, an intermediate layer,
It is possible to provide a large number of various photographic constituent layers such as protective layers, subbing layers, backing layers, antihalation layers, etc.

When the photographic material of the present invention is used for full color use, at least one red-sensitive silver halide emulsion layer, one green-sensitive silver halide emulsion layer, and one blue-sensitive silver halide emulsion layer are coated on the support. be done. At this time, at least one light-sensitive silver halide emulsion layer may contain internal latent image type silver halide grains according to the present invention, but all light-sensitive silver halide emulsion layers contain internal latent image type silver halide grains according to the present invention. Preferably, it contains latent image type silver halide grains. Furthermore, each light-sensitive silver halide emulsion layer may be the same color-sensitive layer or may be separated into two or more layers having different sensitivities. In this case, at least one layer having different sensitivities may be separated. - The color-sensitive layer may contain the internal latent image type silver halide grains according to the present invention, but it is preferable that all the emulsion layers contain the internal latent image type silver halide grains according to the present invention.

The color development time when processing a color direct positive light-sensitive material is preferably within 2 minutes for the purpose of rapid processing, more preferably within 1 minute and 30 seconds, particularly preferably within 1 minute.

The photographic light-sensitive material according to the present invention is suitable for general black and white use, for X-ray use,
For color, for false color, for printing, for infrared, for micro,
It can be effectively applied to various uses such as silver dye bleaching, and it can also be applied to colloid transfer method, silver salt diffusion transfer method, Rogers U.S. Pat.
7 and 2,983.606, Weyarts et al., U.S. Pat. No. 3,253,915, Whitemore et al., U.S. Pat. No. 3,227.550, Barr et al.
No. 7.551, U.S. Pat. No. 3,227 to Whitemore et al.
552 and U.S. Pat. Nos. 3,415.644, 3,415.645, and 3,415.646 to Land et al. can.

〔Example〕

EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the embodiments of the present invention are not limited thereto.

Example 1 (Preparation of emulsion A) A monodisperse silver bromide emulsion was prepared as follows.

An aqueous solution containing ossein gelatin was controlled at 70°C, and while stirring vigorously, a silver nitrate aqueous solution and a potassium bromide aqueous solution were simultaneously added to the solution using the Chondrald double jet method. An emulsion was obtained. To this emulsion were added 5 mg of sodium thiosulfate and 6 mg of chloroauric acid (tetrahydrate) per mole of silver, and chemical ripening was performed by heating at 75° C. for 80 minutes to obtain a silver bromide core emulsion.

The core emulsion thus obtained was further grown by adding a silver nitrate aqueous solution and a potassium bromide aqueous solution, and the average grain size was 0.7.
A μ■ octahedral monodispersed core/shell silver bromide emulsion was obtained. After washing and desalting, this emulsion contains 1.3
mg of sodium thiosulfate and chloroauric acid (tetrahydrate) were added and chemically sensitized by heating at 60° C. for 70 minutes to obtain an internal latent image type silver halide emulsion.

(Preparation of Sample 1) A color photographic material (Sample 1) having a mud layer structure was prepared on a paper support laminated on both sides with polyethylene. Note that the numbers indicate the amount of coating (a+g/dm").

7th layer (protective layer) Gelatin 12.3 6th layer (
Ultraviolet absorbing layer) Gelatin 5.4 Ultraviolet absorber (UV-1) 1.0 Ultraviolet absorber (
UV-2) 2.8 Solvent (So-3) 12 5th layer (
Blue-sensitive layer) Blue-sensitive emulsion color-sensitized by adding blue-sensitive sensitizing dye (BD-1) to emulsion A (in terms of silver) 5.0 Gelatin 13.5 Yellow coupler (Y C-1) 8.4 Image Stabilizer (A O-2
) 3.0 Solvent (So-1) Fogging agent (FA-1) 4th layer (yellow filter layer) Gelatin yellow colloidal silver ultraviolet absorber (UV-1) Ultraviolet absorber (UV-2) Color mixing prevention agent (AS -1) Solvent (SO-3) Third layer (green photosensitive layer) Green-sensitive emulsion (silver equivalent) 15.0 mg 1 mol silver 5 color sensitized by adding green-sensitive sensitizing dye (GD-1) to emulsion A .2 4.2 1.0 0.5 1.4 0.4 0.8 Gelatin magenta coupler (MC- Image stabilizer (AO-1) Solvent (SO-4) Fogging agent (FA-1) Second Layer (color mixing prevention layer) Gelatin 2.7 13.0 1) 2.4 2.0 3.15 15.0 mg 1 mol silver 7.5 Color mixing prevention agent (A s-1) 0.55 Solvent (so-2) 0.72 1st layer (red-sensitive layer) Red-sensitive emulsion (silver equivalent) color-sensitized by adding red-sensitive sensitizing dyes (RD-1 and RD-2) to emulsion A (silver equivalent) 4.0 Gelatin 13.8 cyan Coupler (CC-1) 2.1 Uncoupler (CC-2) 2.1 Image Stabilizer (A O-
2) 2.2 Solvent (So-1)
3.3 Fogging agent (FA-1)
15.0 mg 1 mol silver In addition, 5A-1 is used as a coating aid.
, 5A-2, and HA-1 was added as a hardening agent in an amount of f3+mg per Ig of gelatin.

(Additives used) RD-1 D-2 GD ■ A- ■ C- C C- S 〇 - o-2 O-4 S- ■ O-1 H HA -1 LJ V -1 V -2 A- ■C, H) tJlNa 2tts 5A-2 (Creation of sample 2) Sample 1 is the fogging agent (F
Sample 2 was prepared in the same manner as Sample 1 except that A-1) was removed.

Each of the obtained samples was passed through an optical wedge, exposed to light using a photosensitive needle, and processed through the processing steps shown below.

[Processing-1] Processing process Time Temperature color development
30 seconds to 1 minute 30 seconds 33℃ bleach fixing
Stable at 33℃ for 40 seconds 2
Dry at 33℃ 3 times for 0 seconds each
30 seconds 60-80℃ Color developer formulation Benzyl alcohol 151III
2 Ethylene glycol 15+aQ polyphosphoric acid 2.5g Potassium sulfite 2.0g Potassium bromide
1.8g potassium carbonate
30.0g hydroxylamine sulfate
3.0g 3-Methyl-4-amino-N-ethyl-N-β-methanesulfonamide ethylaniline sulfate 4.25g 5-methylbenzotriazole 10mg 1-acetyl-2-phenylhydrazine O, 1g optical brightener (4 , 4'-diaminostilbendisulfonic acid derivative)
1.0g potassium hydroxide
Add 2.0g water
IQ (adjusted to pH 1O, 5 with potassium hydroxide or sulfuric acid) Bleach-fix solution formulation Ammonium thiosulfate (54wt%) 159mQ Sodium sulfite 15g Iron (III) ethylenediaminetetraacetate Ammonium 55g Sodium ethylenediaminetetraacetate (dihydrate) 4g Ice Add 8.61 g of acetic acid and 1Q water (adjust to pH 5.4 with aqueous ammonia or hydrochloric acid.) Stabilizing solution formulation 1-hydroxyethylidene-1,1 diphosphonic acid (60%) 1.6 mQ
Bismuth chloride 0.35g Polyvinylpyrrolidone 0.25g Aqueous ammonia 2.5glff1 Nitrilotriacetic acid/3Na 1. Og5-chloro-2-methyl-4-inthiazoline-3-tin 50nBH2
-Octyl-4-isothiazolin-3-one 50mg
Optical brightener (4,4'-diaminostilbendisulfonic acid derivative) Add 1.0 g of water
lα (p with potassium hydroxide or hydrochloric acid) was adjusted to 17.5. ) [Processing-2] Same as Processing-1 except that l-acetyl-2-phenylhydrazine and 5-methylbenzotriazole in the color developer were removed.

[Processing-3] In the color development step, the process was the same as Processing-2 except that after 5 seconds of immersion, exposure was performed for 5 seconds with 2 lux white light.

Below, the blue reflection density (maximum density Dmax and minimum density treatment l) of each colored sample obtained by Processing-1, 2, and 3 is shown below. If the conditions are met, Dmin is low and the buffing between Dmax and Dmin is good.

Claims (1)

[Claims] It has at least one silver halide emulsion layer containing internal latent image type silver halide grains on which the grain surface is not fogged in advance, and after image exposure, after being subjected to fogging treatment, and/or after being subjected to fogging treatment. A method for processing a photographic light-sensitive material for obtaining a direct positive image by surface development, characterized in that the development is carried out at a processing temperature of 40° C. or more and a processing time of 1 minute or less. How to process photosensitive materials.