JPH0830869B2 - Direct positive silver halide color-processing method for photographic light-sensitive material - Google Patents

Description

The present invention relates to a method for processing a direct positive silver halide color photographic light-sensitive material, and more particularly, to reduce the processing time of the photographic light-sensitive material by compacting a processor for color development and the like. The present invention relates to a method for processing a light-sensitive material as described above, which is capable of shortening a large amount of processing and obtaining an image excellent in whiteness.

[Conventional technology]

Conventionally, it has been desired to shorten the processing time of a direct positive silver halide color photographic light-sensitive material. In addition to shortening the processing time, there is a demand for making the processing apparatus more compact. However, if the processing apparatus is made compact, the processing time in the apparatus must be kept to a minimum, and therefore the processing should be performed. The conveying speed of the photosensitive material (hereinafter referred to as the linear speed) needs to be slower than that of the conventional apparatus. When the linear velocity is too slow, the significance of downsizing the device for the purpose of rapid processing is lost, and when the linear velocity is slowed in this way, the white background of the obtained image tends to be deteriorated. According to the studies by the present inventors, this tendency is particularly remarkable in a light-sensitive material having an emulsion containing silver chloride. Thus, according to the knowledge of the present inventors, it is clear that the linear velocity of the light-sensitive material is an important factor for downsizing the processor directly used for the positive silver halide color photographic light-sensitive material. Became.

[Object of the Invention]

The present invention can make the processing apparatus compact,
It is an object of the present invention to provide a processing method for a direct positive silver halide color photographic light-sensitive material which enables large-scale processing and can obtain an image excellent in whiteness.

[Structure and Action of Invention]

The present invention comprises, on a support, at least one silver halide emulsion layer containing at least two types of pre-fogged internal latent image type silver halide grains having different average grain sizes and the same color sensitivity. A method for processing a direct positive silver halide color photographic light-sensitive material provided, which comprises performing surface development after performing fogging on the light-sensitive material by at least a chemical action or an optical action and / or while performing a fogging treatment. , A positive image is directly obtained by further bleach-fix processing, and the linear velocity of penetration of the photographic light-sensitive material into the bleach-fix processing bath is 10 mm / sec.
The above is a method for processing a direct positive silver halide photographic light-sensitive material, characterized in that the internal latent image type silver halide grains contain silver chloride in an amount of 5 mol% or more, thereby achieving the above object. I was able to do it.

The linear velocity of entry into the bleach-fixing processing bath of the light-sensitive material in the processing method of the present invention is 10 mm / sec or more, which means that in the processing step, the speed at which the light-sensitive material substantially enters the bleach-fixing bath. Means that it should be 10 mm / sec or more. Therefore, in the case of a photosensitive material which is continuous in a strip shape, the longitudinal linear velocity in the longitudinal direction in the processing step may be 10 mm / sec or more, which makes the linear linear velocity 10 mm / sec. In the case of a piece like a test piece, it is sufficient that the entry linear velocity until the tip of the piece enters and the rear end of the piece completely enters is 10 mm / sec or more. Therefore, if the approach linear velocity is 10 mm / sec, then the linear velocity may increase or decrease in the bleach-fix bath.

By setting the linear velocity of entry into the bleach-fixing bath at 10 mm / sec or more in this way, it is possible to prevent an increase in the minimum density of the image and obtain an image with excellent whiteness. This means that silver chloride is added to the photosensitive emulsion in the same manner as in the present invention.
The effect is seen for those containing more than mol%. In other words, in the case of containing silver chloride in an amount of 5 mol% or more, if the above-mentioned entry linear velocity is set to 10 mm / sec or less, the minimum concentration tends to increase, and this is effective in suppressing this.

The photographic material to which the processing method of the present invention is applied has at least one silver halide emulsion layer containing internal latent image type silver halide grains which have not been fogged in advance. As the internal latent image type silver halide grains which have not been fogged in advance, various types can be arbitrarily used, for example, conventionally known ones can be appropriately used.

Emulsions that can be used include, for example, U.S. Pat.
Conversion type silver halide emulsions described in No. 0, Japanese Patent Publication No. 5
8-1412 and the like, laminated structure type silver halide emulsions, core / shell type silver halide chemically sensitized inside grains as described in JP-B-52-34213 and JP-B-60-55821,
Examples thereof include core / shell type emulsions described in JP-B-60-55820.

The internal latent image type silver halide grains which have not been previously fogged contain silver chloride in an amount of 5 mol% or more. More preferred is a case where the content of silver chloride is 30 mol% or more. The shape of the silver halide grains may be any shape, for example, cubic crystal, regular octahedron, dodecahedron, or a mixture thereof, spherical, tabular or amorphous grains. It may be. The average grain size and grain size distribution of the silver halide grains can be widely varied depending on the required photographic performance, but a narrow grain size distribution is more preferable. That is, the silver halide grains used in the light-sensitive material to which the present invention is applied are ±
The weight of silver halide contained in the range of the grain size of 20% is preferably 60% or more, and more preferably 70% or more of the total weight of silver halide.

Here, the average particle diameter is expressed as the average value of the particle size, which is the length of the ridge when converted to a cube having the same volume.

The internal latent image type silver halide grains of the light-sensitive material to which the processing method of the present invention is applied are composed of at least two kinds of internal latent image type silver halide grains having different average grain sizes. The difference in the average particle size means that the particle group has a large average particle size and the particle group has a smaller average particle size. In this case, it is preferable that the average particle size of the smaller particles (the smaller average particle size) is 80% or less, based on the average particle size of the larger particles (also the larger particle size), and more preferably Is preferably 70% or less. The grains having a large average grain size and the grains having a small average grain size may have the same or different silver halide composition or grain shape. Further, the mixing ratio of the large particles and the small particles can be freely selected depending on the required photographic performance. In this case, the grains to be mixed may be at least two types having different average grain sizes, and of course, three or more types of silver halide grains may be mixed.

Further, in the above-mentioned internal latent image type silver halide grains, emulsions having different sensitivities can be layered or mixed to form emulsion layers in order to broaden the exposure latitude. In this case, the ratio of coated silver amount in each emulsion layer is
It can be arbitrarily determined according to the required photographic characteristics.

In the present invention, for pre-fogged internal latent image type silver halide grains, the meaning of not pre-fogged means that the emulsion used is coated on a transparent film support at 35 mgAg / cm ^2. When the developed test piece is developed with the surface developer A described below at 20 ° C. for 10 minutes without exposure, the density obtained is 0.6, preferably not more than 0.4.

Surface developer A Metol 2.5 g l-Ascorbic acid 10 g NaBO ₂ .4H ₂ O 35 g KBr 1 g Water was added to 1 l In addition, the photosensitive material of the processing method of the present invention had an internal latent image type which was not previously fogged. The silver halide emulsion containing silver halide grains, after exposing the test piece prepared as described above,
It is preferable that it can give a sufficient density when developed with the internal developer B having the following formulation.

Internal developer B Metol 2 g Sodium sulfite (anhydrous) 90 g Hydroquinone 8 g Sodium carbonate (monohydrate) 52.5 g KBr 5 g KI 0.5 g Water added 1 l About 1
When exposed to a light intensity scale for a predetermined time up to seconds and developed with internal developer B at 20 ° C. for 10 minutes,
Another portion of the test piece exposed under the same conditions was used as a surface developer A.
It is preferable that the maximum density is at least 5 times, preferably at least 10 times that obtained when developed at 20 ° C. for 10 minutes.

The above silver halide emulsion can be optically sensitized with a commonly used sensitizing dye. It is also useful for the silver halide emulsion of the present invention to use a combination of sensitizing dyes used for supersensitization such as an internal latent image type silver halide emulsion and a negative type silver halide emulsion. See Research Discl for sensitizing dyes.
No. 15162 and No. 17643 can be referred to.

To directly obtain a positive image by the processing method of the present invention,
After imagewise exposure (photographing), a photographic light-sensitive material having an internal latent image type silver halide emulsion layer which is not previously fogged,
After image exposure, surface development is carried out after a treatment for generating fogging nuclei by a chemical action or an optical action, that is, after the fogging treatment and / or while performing the fogging treatment. Here, the fogging treatment can be carried out by using a compound that gives the entire surface exposure or generates a fogging nucleus, that is, a fogging agent.

In the processing method of the present invention, when the entire surface is exposed, the imagewise exposed light-sensitive material is immersed or wetted in a developing solution or another aqueous solution, and then uniformly exposed on the entire surface. The light source used here may be any light within the light-sensitive wavelength range of the photographic light-sensitive material, and high-illuminance light such as flash light can be applied for a short time, or weak light can be applied for a long time. Good.
Further, the time of the entire surface exposure can be varied within a wide range so that the best positive image can be finally obtained depending on the photographic light-sensitive material, the development processing conditions, the type of the light source used and the like. In addition, the total exposure amount is
Most preferably, the exposure dose is given within a certain range.

In the processing method of the present invention, a wide variety of compounds can be used as the fogging agent in the case of performing the chemical fogging treatment, and this fogging agent may be present during the development treatment, and, for example, other than the support of the photographic light-sensitive material. In the constituent layers of (in particular, the silver halide emulsion layer is particularly preferable),
Alternatively, it may be contained in a color developing solution or a processing solution prior to color developing processing. The amount used can be varied over a wide range according to the purpose. The preferable amount added is 1 to 1,500 mg, preferably 10 to 1,000 mg per mol of silver halide when added to the silver halide emulsion layer. Is. When added to a processing solution such as a color developing solution, the preferable addition amount is 0.01 to 5 g / l, particularly preferably 0.05 to 1 g / l.
Is.

Examples of the fogging agent used in the treatment liquid of the treatment method of the present invention include hydrazines described in U.S. Pat.Nos. 2,563,785 and 2,588,982, or U.S. Pat.
Hydrazides or hydrazine compounds described in 7,552; U.S. Pat. Nos. 3,615,615, 3,718,479 and 3,
719,494, 3,734,738 and 3,759,901 which are heterocyclic quaternary nitrogen salt compounds; and US Pat.
Examples thereof include compounds having an adsorption group on the surface of silver halide, such as acylhydrazinophenylthioureas described in No. 030,925. Further, these fogging agents can be used in combination. For example, Research Disclosure No. 15162 describes that a non-adsorption type fogging agent is used in combination with an adsorption type fogging agent, and this combination technique is also effective in the method of the present invention. As the fogging agent used in the method of the present invention, either an adsorption type or a non-adsorption type can be used, or they can be used in combination.

Further, at least two kinds of internal latent image type silver halide grains of the light-sensitive material to which the present invention is applied have the same color sensitivity. Having the same color sensitivity means that the visible wavelength range to be absorbed is the same or substantially the same even if the average grain size of the silver halide grains is different. Therefore, if one of the silver halide grains is, for example, blue-sensitive, it means that the other silver halide grain must also be blue-sensitive to the same or substantially the same wavelength range.

The light-sensitive material to which the processing method of the present invention is applied has at least one silver halide emulsion layer containing internal latent image type silver halide grains. Therefore, when the present invention is applied for full color, a blue color-sensitive silver halide emulsion layer containing a yellow dye-forming coupler, a green color-sensitive silver halide emulsion layer containing a magenta dye-forming coupler and a cyan dye-forming layer are formed. A photographic light-sensitive material processed by the method of the present invention can be formed by providing a red-sensitive silver halide emulsion layer containing a coupler. Each of these layers is formed by coating on a support, but the order of coating can be changed as necessary.

As the coupler contained in each of the color-sensitive layers, first, a yellow dye-forming coupler is a benzoylacetanilide type, a pivaloylacetanilide type, or a so-called split in which a carbon atom at the coupling position can be released during coupling. 2 substituted with an off group
Equivalent yellow couplers and the like are useful.

As the magenta dye-forming coupler, a 5-pyrazolone type, a pyrazolotriazole type, a pyrazolinobenzimidazole type, an indazolone type, or a 2-equivalent type magenta coupler having a split-off group is useful.

Further, as the cyan dye-forming coupler, a phenol type, naphthol type, pyrazoquinazolone type, or 2-equivalent type cyan coupler having a split-off group is useful.

These dye-forming couplers can be arbitrarily selected, and the usage method, usage amount, etc. are not particularly limited.

Further, it is possible to use an ultraviolet absorber in order to prevent fading of the dye image due to short wavelength actinic rays, and examples thereof include thiazolidone, benzotriazole, acrylonitrile, and benzophenone compounds.
The use of 120, 320, 326, 327, and 328 (all manufactured by Ciba Geigy) alone or in combination is advantageous.

As the support of the photosensitive material to which the present invention is applied, for example, a polyethylene terephthalate film, a polycarbonate film, a polystyrene film, a polypropylene film, a cellulose acetate film, a glass, a baryta paper, a polyethylene laminated paper, etc. which have been subjected to an undercoating if necessary. Can be mentioned.

Further, the processing method of the present invention includes at least the above-mentioned surface development processing and bleach-fix processing nuclear processing steps. Although the fogging treatment is performed in the present invention, as described above, the composition of the treatment liquid is different between the light fog and the chemical fog. The bleach-fixing treatment is a usual processing step performed after color development, and the treatment liquid composition conventionally used can be applied to the present invention.

EXAMPLES Next, the present invention will be specifically described with reference to examples. Of course, the present invention is not limited to the examples shown below.

Example 1 (I) Cubic silver bromide having an average particle size of 0.40 μ was used as a core particle, and silver chlorobromide was added to the surface of the core particle at a molar ratio (AgBr / AgCl) of 1
It was precipitated and grown as 0/90 to prepare an internal latent image type silver halide emulsion composed of cubic silver chlorobromide (AgBr / AgCl = 56.1 / 43.9) having an average particle size of 0.50 μm.

In addition, tetradecahedral silver bromide with an average particle size of 0.80μ was used as the core particle, and silver chlorobromide (AgBr / AgCl = 30/70) was further precipitated and grown on the surface to give a cubic salt odor with an average particle size of 0.94μ. Silver chloride (AgBr
An internal latent image type silver halide emulsion consisting of /AgCl=73.2/26.8) was prepared. The above-obtained emulsion having an average grain size of 0.50 μ and the emulsion having an average grain size of 0.94 μ were mixed at a molar ratio of 40:60 to obtain a mixed emulsion composed of two kinds of emulsions having different average grain sizes. . A blue light-sensitive sensitizing dye was added to a part of the emulsion thus obtained to obtain a blue-sensitive silver halide emulsion. A green light-sensitive sensitizing dye was added to another part to give a green-sensitive silver halide emulsion, and a red light-sensitive sensitizing dye was added to another part to give a red-sensitive silver halide emulsion. Using each of the emulsions obtained here, Sample No. 1 was prepared in the following manner.

First Layer This layer comprises 0.6 g / m ² of the above red-sensitive silver chlorobromide emulsion in terms of silver (the same below) and the following cyan dye-forming coupler (C
-1) containing 0.68 g / m ^2, the amount of gelatin to form a 1.8 g / m ^2.

Second layer This layer contains 0.05% di-tert-octylhydroquinone.
5 g / m ^{2 was} included and the amount of gelatin was 0.8 g / m ² .

Third Layer This layer contains 0.5 g / m ² of the above green-sensitive silver chlorobromide emulsion and 0.45 g / m ² of the following magenta dye-forming coupler (M-1), and the amount of gelatin is 1.5 g / m ^2. formed as m ² .

Fourth Layer This layer was formed with a gelatin amount of 0.8 g / m ² .

Fifth layer This layer contains 0.09 g / m ² of yellow colloidal silver,
It was formed with a gelatin amount of 1.2 g / m ² .

Sixth layer This layer was formed with a gelatin content of 0.8 g / m ² .

The seventh layer this layer, the blue sensitive silver iodobromide emulsion 0.68 g / m ² and the following yellow dye-forming couplers (Y-1) containing 0.89 g / m ^2, the amount of gelatin 2.0 g / m ² Formed as.

Eighth layer This layer contained 0.3 g / m ² of the following ultraviolet absorber (UV-1) and was formed with a gelatin amount of 2.0 g / m ² .

(II) Next, an internal latent image type silver halide emulsion was prepared by
An internal latent image type silver halide emulsion consisting of octahedral silver bromide having an average grain size of 0.60 μ was prepared according to the production method described in Japanese Patent No. 4213, and the above sample was used in place of the emulsion in (I) above. Sample No. 2 was prepared in the same manner as No. 1.

(III) The samples No. 1 and No. 2 were exposed through an optical wedge, and then a series of treatments were performed using a treatment device equipped with the following treatment bath.

(A) Processing step (35 ° C.) Color development processing 2 minutes 10 seconds (including a transit time of 15 seconds in air before being immersed in a bleach-fixing bath) Bleach-fixing processing 1 minute 30 seconds (immersing in a stabilizing bath Stabilization process 1 min 30 sec Dry process 1 min However, 10 seconds from 10 seconds to 20 seconds after starting color development,
The entire surface was illuminated with 1 lux of white light.

The treatment liquid composition used for each treatment is as follows,
The values shown for each chemical are the respective concentrations (g / l)
Is shown.

(B) Color developer composition (C) Bleach-fix solution composition (D) Composition of stable liquid (IV) Next, a series of processing steps such as color development and bleach-fixing processing using the above processing liquid will be described with reference to FIG.

This drawing conceptually shows the cross section of the processing apparatus. The processing apparatus 1 is provided with a supply section 2 of the photosensitive material F at the upper side of the carrying-in side of the photosensitive material F, and color development at the downstream side of the supply section 2. A processing bath 3, a bleach-fixing processing bath 4, a fixing processing bath 5 and a drying section 6 are sequentially provided. Of course, although not shown, each processing bath is provided with a processing rack composed of a multi-stage guide roller from the upper part on the inlet side of the photosensitive material to the upper part on the outlet side via the tank bottom.

Therefore, the photosensitive material F carried in from the supply section 2 is first immersed in the color developing solution 8 in the color developing processing bath 3. An optical box 7 for whole surface exposure is provided at the center of the side surface of the color development processing bath 2 on the inlet side, and the light source F carries out sub-exposure on the photosensitive material F carried into the color development processing bath 3. The speed of the photosensitive material F conveyed through the color development processing bath 3 can be appropriately set depending on the processing conditions. After the sub-exposure, the photosensitive material F is pulled up from the color developing solution 8 at the above speed and immersed in the bleach-fixing solution 9 in the next bleach-fixing processing bath 4. At this time, the speed at which the light-sensitive material F enters the bleach-fixing solution 9 can be appropriately set depending on the processing conditions. The photosensitive material F pulled up from the bleach-fixing processing solution 9 is a stabilizing processing solution for the next stabilizing processing bath 5.
The photosensitive material F, which is dipped in the stabilizing processing solution 10 and subjected to the stabilizing processing, and pulled up from the stabilizing processing solution 10, is carried into the inside from the opening 6a of the drying section 6 disposed above the stabilizing processing bath 5 and dried for a predetermined time. Through the outlet opening 6b, and is discharged to the outside from the discharge port 11 of the processing device 1 that follows.

In the above processing steps, color development, bleach-fixing, stabilization and drying are processed according to the following required times.

Processing step (35 ° C) Color development processing 2 minutes 10 seconds (including 15 seconds of transit time in air before immersion in bleach-fixing bath) Bleach fixing processing 1 minute 30 seconds (up to immersion in stabilizing bath) Stability processing 1 minute 30 seconds Drying processing 1 minute 30 seconds (V) In the above processing, the linear velocity of the photosensitive material (F) was set to 12 mm / sec. The process of transporting the color development processing bath 3 is referred to as Process-1.

Further, the processing rack (not shown) is switched to a smaller one, and the linear velocity during transportation is set to 8 mm / sec, and the processing in the above processing step is referred to as processing-2.

Next, processing-3 is carried out by a small processing rack similar to the above-mentioned processing-2 except that the linear velocity at the time of transportation is set to 10 mm / sec.

(A) Processing step (35 ° C) Color development processing 1 minute 44 seconds (including 12 seconds transit time in air before immersion in bleach-fixing bath) Bleach-fixing processing 1 minute 12 seconds (immersion in stabilizing bath (Including a transit time of 12 seconds in the air until it is processed) Stabilization treatment 1 minute 12 seconds Drying treatment 1 minute 12 seconds Sample No. 1 and No. 1 obtained in the above treatments 1, 2 and 3 Sensitometry was performed on each of the two images to determine the maximum density (Dmax) and the minimum density (Dmin) of each, and the results are shown in Table 1 below.

In the table, Y, M and C indicate a blue color sensitive emulsion layer (seventh layer), a green color sensitive emulsion layer (third layer) and a red color sensitive emulsion layer (first layer).

As is clear from the results shown in Table 1 above, the processing in which the linear velocity of the sample which is a light-sensitive material is set to 10 mm / sec or more-
According to the processing method of the present invention according to 1 and 3, the minimum density (Dm
In), a result smaller than that of the processing-2 which is the conventional processing method is obtained. This shows that a clear image can be obtained by the method of the present invention. It is also clear that even if the processing rack is downsized, a high quality image can be similarly obtained if a linear velocity of 10 mm / sec or more is secured.

Furthermore, sample No. 1 having an emulsion containing silver halide grains having different average grain sizes has the maximum density higher than that of sample No. 2 having an emulsion containing one kind of silver halide grains. It is understood that the photographic material having an emulsion containing at least two kinds of silver halide grains having different average grain sizes is suitable for the processing method of the present invention.

Comparative Example-1 Sample No. 11 was prepared according to the sample No. 1 of Example-1. However, the emulsion was prepared using the following emulsion.

Cubic silver bromide having an average particle size of 0.40 μm is used as a core particle,
Furthermore, silver chlorobromide was added to the surface in a molar ratio (AgBr / AgCl) of 93/7.
As an internal latent image type emulsion composed of cubic silver chlorobromide (AgBr / AgCl = 96.6 / 3.4) having an average particle size of 0.50 μm.

Also, using tetradecahedral silver bromide with an average particle size of 0.80 μm as core particles, silver chlorobromide (AgBr / AgCl = 91.0 / 9.0) was further precipitated and grown on the surface, and cubic chlorobromide with an average particle size of 0.94 μm was used. It was prepared as an internal latent image type emulsion composed of silver (AgBr / AgCl = 96.5 / 3.5).

The emulsion having an average grain size of 0.50 μm and the average grain size of 0.
By mixing with a 94 μm emulsion at a molar ratio of 40:60, a mixed emulsion composed of two kinds of emulsions having different average grain sizes was obtained.

A blue sensitizing dye was added to a part of the emulsion obtained above to prepare a blue-sensitive silver halide emulsion. A green light-sensitive dye was added to another part to give a green-sensitive silver halide emulsion, and a red light-sensitive sensitizing dye was added to another part to give a red-sensitive silver halide emulsion. Using each of the emulsions obtained here, coating was performed in the same configuration as that of Sample No. 1 of Example-1 to obtain Sample 11.

Using the above sample No. 11, the sample was exposed through an optical wedge in the same manner as in Example-1, and treated-1, treated-2, treated-3.
I went.

Sensitometry was performed on each of the images of Sample-11 obtained by the above process to obtain the maximum density (Dmax) of each.
And the minimum concentration (Dmin) was determined. The results are shown in Table-A below.

As can be seen from the results of Table-1 of Example-1 and the results of Table-A above, Sample No. in which the content of silver chloride contained in the internal latent image type silver halide emulsion of the emulsion was more than 5 mol%. It is understood that 1 is preferable and effective in the maximum concentration and the minimum concentration than the sample No. 11 having a silver chloride content of less than 5 mol%. That is, if the silver chloride content is less than 5 mol%, the practical effect is small.

Example-2 In this example, the sample No. 1 in Example-1 was 82 mm x
After cutting into a 130 mm test piece, this sample was exposed through an optical wedge, and the same processing as in Example 1 was performed except for the following processing conditions.

That is, the tip of the test piece, which is a sample, has the color development processing bath 3
The test piece was treated at a linear velocity of 8 mm / sec until 2 minutes and 5 seconds passed after the immersion, and then the rear end of the test piece was bleached in the bleach-fixing treatment bath 4 as shown in Table 2 below. Maintain the speeds shown in Table 2 below until immersed in Fixer 9 and then 8m again.
After returning to m / sec, the subsequent processing was performed. In Table 2 below, processing is performed in order from the lowest speed-4 to processing-
It was set to 9.

Sensitometry was performed on the test pieces obtained by each treatment, and the minimum density (Dm
in) was obtained and the respective results are shown in Table 2.

In Table 2, Y, M and C are the same as in Example-1.

As is clear from the results in Table 2 above, the speed at which the test piece enters the bleach-fixing treatment liquid 9 of the bleach-fixing treatment bath 4 is
It can be seen that when the speed is 10 mm / sec or more, the minimum density (Dmin) is small and a good image can be obtained as compared with the case of this speed or less.

Example 3 (I) Cubic silver bromide having an average particle diameter of 0.30 μ was used as a core particle, and silver chlorobromide was further added to the surface (molar ratio AgBr / AgCl = 40/60).
Was precipitated and grown to obtain an internal latent image type silver halide emulsion consisting of cubic silver chlorobromide (AgBr / AgCl = 58/42) having an average particle size of 0.45 μm. Cubic silver bromide with an average particle size of 0.65μ is used as the core particle, and silver chlorobromide (AgBr / AgCl = 50 /
50) was precipitated and grown to obtain an internal latent image type silver halide emulsion consisting of tetradecahedral silver chlorobromide (AgBr / AgCl = 69/31) having an average grain size of 0.9 μm.

A blue-sensitive emulsion having an average grain size of 0.45μ and a blue-sensitive emulsion having an average grain size of 0.9μ are prepared by adding a blue photosensitive sensitizing dye to each emulsion having an average grain size of 0.45μ and an average grain size of 0.90μ. And a sensitive emulsion was obtained.

In this Example, instead of the 7th layer in Sample No. 1 obtained in Example-1, the following 7A layer and 7B layer were respectively applied in the order close to the support, and Sample No. Sample No. 3 was prepared in the same manner as 1.

Part 7A layer this layer, a blue-sensitive emulsion having an average particle size of 0.45μ contained 0.28 g / m ² and the yellow dye forming coupler (Y-1) 0.45g / m 2, as the amount of gelatin 1.0 g / m ² Formed.

Part 7B layer this layer, blue-sensitive emulsion 0.42 g / m ² and the yellow dye-forming coupler having an average particle diameter of 0.90μ (Y-1) to 0.45 g / m ²
Was formed, and the amount of gelatin was 1.0 g / m ² .

(II) After exposing the above sample No. 3 through an optical wedge, it was processed at a linear velocity of 12 mm / sec using the processing rack used in processing-1, and this processing was designated as processing-10.

Processing step (38 ° C) Color development processing 2 minutes 10 seconds (including 15 seconds of transit time in air before immersion in bleach-fix bath) Bleach fixing processing 1 minute 30 seconds (up to immersion in stabilization bath) Stabilization treatment 1 min 30 sec Drying treatment 1 min (III) Next, use the small treatment rack used in Example-2 and change the linear velocity. The following processing was performed at 8 mm / sec. This process is referred to as process-11.

Processing step (38 ° C) Color development processing 2 minutes 10 seconds (including 15 seconds of transit time in air before immersion in bleach-fixing bath) Bleach-fixing processing 1 minute 30 seconds (until immersion in stabilizing bath) The transfer time in air of 15 seconds is included.) Stabilization treatment 1 minute 30 seconds Drying treatment 1 minute 30 seconds In the processing, the color developer 8 has the following composition different from that in Example-1. Other treatment liquid 9,10
Used the same thing as Example-1.

Sensitometry was performed on each sample obtained by each of the above treatments to find the minimum concentration (Dmin) and
The respective results are shown in.

As is clear from the results of Table 3 above, even when the samples coated with emulsions having different average particle diameters in different layers were developed in the presence of a fog agent,
It can be seen that a good image with a minimum density (Dmin) can be obtained by performing the processing by the method according to the present invention.

〔The invention's effect〕

As described above, according to the present invention, in the color development and bleaching development of the direct positive silver halide color photographic light-sensitive material, the processing speed can be increased by setting the entry speed to the bleach-fixing processing solution at 10 mm / sec or more. In addition, the processing device can be downsized.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a cross section of a processing apparatus used for carrying out the present invention. 3 ... Color development processing bath, 4 ... Bleach fixing processing bath, 8 ...
Color developing solution, 9 ... Bleach-fixing solution, F ... Photosensitive material.

Claims (1)

[Claims] 1. A silver halide emulsion layer containing at least two types of pre-fogged internal latent image type silver halide grains having different average grain sizes and the same color sensitivity on a support. A method for processing a direct positive silver halide color photographic light-sensitive material provided with one layer, which comprises performing surface development processing after performing fogging on the light-sensitive material by at least a chemical action or an optical action and / or while performing a fogging treatment. And then a bleach-fixing process is performed to directly obtain a positive image, and the linear velocity of the photographic light-sensitive material entering the bleach-fixing process bath is 10 mm / sec.
The above is the method for processing a direct positive silver halide photographic light-sensitive material, wherein the internal latent image type silver halide grains contain silver chloride in an amount of 5 mol% or more.