JPH0289049A - Dye image forming method - Google Patents

Abstract

PURPOSE:To incorporate specific compds. at a prescribed concn. ratio or above as a color developing agent into a color developing soln. and to improve color balance by specifying the average grain size of the silver halide particles incorpo rated into silver halide emulsion layers and the coating weights of silver to specific ranges. CONSTITUTION:The average grain size of the silver halide particles incorporated into the silver halide emulsion layers is 0.2 to 0.8mum and the ratio of the max. average grain size and min. average grain size is 1 to 2.5. The coating weights of the silver to be incorporated into the respective silver halide emulsion layers are (a) red-sensitive internal latent image type direct positive silver halide emulsion layer: 1.5 to 5.0mg/dm<2>, (b) green-sensitive internal latent image type direct positive silver halide emulsion layer: 1.5 to 7.0mg/dm<2>, (c) blue-sensitive internal latent image type direct positive silver halide emulsion layer: 2.0 to 7.0mg/dm<2>. Further, the color developing soln. used for a color development processing contains >=70mol% compd. expressed by formula I as the color developing agent. The good color balance is obtd. in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for forming a dye image, and more particularly to a method for forming a dye image with improved color balance and suitable for color proofing.

[Background of the invention]

Conventionally, as photosensitive materials for color proofing, there have been known photosensitive materials using a 7-otopolymer whose tackiness changes upon exposure, photosensitive materials using a diazo compound, and the like.

However, these have drawbacks such as complicated operations and expensive photosensitive materials, and relatively inexpensive overlay type (transparent film type) types have a problem of insufficient image quality.

Recently, color proofs using silver halide color light-sensitive materials that are easy to operate and relatively inexpensive have been commercially available. However, the color tone as a color proof is insufficient, and there is a strong desire to improve the color tone.

According to the inventors' research, one of the causes of the insufficient color tone is
It was found that the spectral absorption of the dye image produced was broad. As a result of repeated studies, it was discovered that spectral absorption can be sharpened by using a color developing agent having a specific structure. A color developing agent having a specific structure is defined by a structural formula in which R1 and R7 each represent a substituted or unsubstituted alkyl group, R1 and R2 may be the same or different, and R1 and R1 are mutually They may be combined to form a ring.

This color developing agent is manufactured by Photographic Science and Engineering Link (Photography Science and Engineering).
c5science and engineering
), 8(3), 125 (1964), etc., but there is no mention that the spectral absorption of coloring dyes becomes sharp.

On the other hand, in the printing field, for many years positive black and white halftone dot images were printed onto printing plates such as 25th plate.

Therefore, the black and white halftone dot image proofing before printing on the 25th plate becomes a positive type photosensitive material.

As positive-working silver halide color photographic light-sensitive materials, methods using a silver dye bleaching method, a method using a color reversal process, and a method using an internal latent image type direct positive emulsion are known. Among these, a method using an internal latent image type direct positive emulsion is advantageous from the viewpoint of processing simplicity and stability.

A technique related to an image forming method using an internal latent image type direct positive silver halide emulsion is disclosed in, for example, Japanese Patent Application Laid-Open No. 56-137350.
listed in the number. However, there is no description suggesting the use of a color developing agent having the above-mentioned specific structure.

A color photographic light-sensitive material using an internal latent image type direct positive silver halide emulsion was exposed to light through a black and white halftone image created by three-color separation, and then processed with a developer containing a color developing agent having the above structure. However, it was confirmed that the spectral absorption of each of the cyan, yellow, and magenta dye images became sharp. However, the color balance, especially the color balance in highlighted areas, is disrupted, and further improvements are required in order to use it as a photosensitive material for color proofing.

[Purpose of the invention]

An object of the present invention is to provide a method for forming a dye image in which the spectral absorption of the dye image is sharp and the color balance is improved over the entire region from the highlight portion to the shadow portion.

[Structure of the invention]

The above object of the present invention is to provide a silver halide color photographic material having red-sensitive, green-sensitive and blue-sensitive internal latent image type direct positive silver halide emulsion layers on a support in sequence, after imagewise exposure. , a method of forming a dye image by color development treatment, wherein the silver halide grains contained in the silver halide emulsion layer each have an average grain size of 0.2 to 0.8.
μm, and the ratio of the maximum average particle size to the minimum average particle size (7
゜a7r, +a) is 1≦7 +sam/r +a+
*≦265, and the amount of coated silver contained in each silver halide emulsion layer is as shown in (a), (b), and (c) below, and the color developer used in the color development treatment is a color developer. This is achieved by a method for forming a dye image containing 70 mol% or more of a compound represented by the following general formula (I).

(a) Red-sensitive internal latent image type direct positive silver halide emulsion layer: 1.5 to 5. On+g/da” (b) Green-sensitive internal latent image type direct positive silver halide emulsion layer: 1.5 to 7.0 mg
/dm" (c) Blue-sensitive internal latent image type direct positive silver halide emulsion layer = 2.0 to 7.0 The average value of the diameter when converted into a circular image of the same area, where the individual grain size is ri and the number is ni, 7 is defined by the following formula.

In the formula, R and R2 each represent a substituted or unsubstituted alkyl group, R1 and R8 may be the same or different, and R1 and R2 may be bonded to each other to form a ring.

The present invention will be explained in more detail below.

The average grain size of the silver halide grains used in the direct positive silver halide emulsion according to the present invention is 0.2 to 0.8 in each of the red-sensitive layer, green-sensitive layer, and blue-sensitive layer. m, preferably 0.25 to 0.5 μm.

In the present invention, the average grain size of silver halide grains means, in the case of spherical silver halide grains, the average grain size of the grains, and This can be measured by A typical method is Loveround's "Particle Size Analysis Method J A, S, T, M.

Symposium on Light Microscopy 195
5, pp. 94-122 or "Theory of the Photographic Process" by Mies and James, 3rd edition, published by Macmillan (1
966), Chapter 2. This particle size can be measured using the projected area of the particle or an approximate diameter value.

If the particles are of substantially uniform shape, the particle size distribution can be expressed fairly accurately as diameter or projected area.

The photographic light-sensitive material according to the present invention has at least three silver halide emulsion layers having different spectral sensitivities.
Each of the two silver halide emulsion layers contains halide root grains having a certain average grain size. These average particle diameters may be approximately the same value for all three layers, but may also be different. Even if they are different, the ratio of the maximum average grain size (roam) to the minimum average grain size (7°1.), r
11M@/r1. is required to be in the range of 1 to 2.5.

Particularly preferably, r + ma7 r si, is l −1
, 8.

Further, the amount of coated silver contained in each silver halide emulsion layer is defined as follows. In a red-sensitive internal latent image type direct positive silver halide emulsion layer, it is 1.5 to 5.0+ mg/da'', preferably 2.0 to 3.5 mg/da''.

In the green-sensitive internal latent image type direct positive silver halide emulsion layer,
1.5 to 7.0B/d+a'', preferably 3.
5 to 6.0 mg/dI11". In addition, in the blue-sensitive internal latent image type direct positive silver halide emulsion layer, it is 2.0 to 7.0.
+ng/da”, preferably 2.5 to 5.0 m
g/da”.

It is important that each emulsion layer satisfies the above conditions.
] (hereinafter referred to as the developing agent according to the present invention) is used as a color developing agent, and is necessary to achieve a good color balance over the entire region from the highlight part to the shadow part.

Although any silver halide grains can be used in the present invention, so-called core/shell type grains are preferred, and in particular, salt grains in which the core portion is rich in silver bromide and the shell portion contains at least 30 mol% of silver chloride. Silver bromide is preferred.

In addition, the particle size distribution is preferably monodisperse, and in particular, when the width of the distribution is defined by the following formula, the width of the distribution is 15%.
It is preferable to have monodispersity with a distribution width of 10% or less, more preferably 10% or less.

Incidentally, methods for preparing emulsions are well known to those skilled in the art, and reference may be made to, for example, U.S. Pat.

Further, in order to impart three different spectral sensitivities to the silver halide emulsion, a sensitizing dye is used, but any sensitizing dye can be used.

The order of each emulsion layer in the silver halide color photographic light-sensitive material according to the present invention is a red-sensitive layer, a green-sensitive layer and a blue-sensitive layer on the support. 912 layers, intermediate layers, filter layers, protective layers, etc. can be provided.

Each silver halide emulsion layer contains dye image-forming couplers, but the combination thereof is arbitrary.

In the present invention, couplers preferably used include yellow magenta and cyan couplers.

As a cyan coupler, an acylamino group and a 5
Phenolic cyan coupler with alkyl group in position
Phenolic cyan couplers having acylamino groups at the 2- and 5-positions are preferred.

Preferred magenta couplers include 5-pyrazolone magenta couplers, pyrazolotriazole magenta couplers, and the like. As the yellow coupler, benzoylacetanilide yellow couplers and pivaloylacetanilide yellow couplers are preferred.

The photosensitive material according to the present invention may contain a capri agent or may not contain a fogging agent. Any fogging agent can be used as the capri agent, and US Pat.
, No. 227,552, No. 4,278,748, No. 4.
Those described in No. 139.387, RD 15750, etc. are preferably used.

The amount of these fogging agents to be used may be approximately selected within the range of 111 g to 3 g per mole of silver halide.

The method for forming a dye image of the present invention is a method in which after imagewise exposure, the material is immersed in a developer and subjected to fogging exposure to perform color development processing, or when the light-sensitive material contains a capri agent, fogging exposure is not applied. There are methods such as color development processing.

There are no particular restrictions on fog exposure conditions, but they are generally 0.
．． Irradiation may be performed for 5 to 20 seconds at an illuminance of 1 to 10 lux.

As for the conditions for the color development treatment, when fog exposure is given, the pH of the developer is preferably 9.5 to 1O96.

When no fog exposure is given, p)l is 11.3 to 12.
5 is preferred.

The temperature of the developer and the development time are about 1 to 4 minutes at 30 to 40°C, regardless of whether fog exposure is performed or not.

The color developing solution according to the present invention contains the developing agent according to the present invention in an amount of 70 mol % or more as a color developing solution main ingredient, but may contain 100 mol %.

Next, the developing agent according to the present invention will be explained.

In the general formula (1), R1 and R each represent a substituted or unsubstituted alkyl group, and the alkyl group may be any substituent, but is preferably a water-soluble group. The water-soluble group is -OH.

N) ISOJs, NHCOR+, -0Rs, -
〇(CHsCHtO)nRa.

-COOM, -3o3M, etc. are preferred. Here, R,...
R.

and R1 each represent an alkyl group, R6 represents a hydrogen atom or an alkyl group, n is 1 to 3, and M represents a hydrogen atom or a cation.

Further, examples of the ring formed by R1 and R2 together with the N atom include a morpholine ring.

As the developing agent according to the present invention, preferably R1 and R
One of 2 is an alkyl group having a water-soluble group, particularly preferably R3 is an unsubstituted alkyl group, and R2 is a hydroxyalkyl group.

The developing agent according to the present invention usually forms a salt from the viewpoint of storage stability.

Specific examples of the color developing agent according to the present invention are shown below.

(I-5) I-12) (I-13) I-14) (I-9) CH.

Among the color developing agents according to the present invention exemplified above,
Particularly preferred for use in the present invention is the compound (1-2).

The compound of general formula (1) used in the present invention is J.

It can be synthesized according to the method described in Aa, Ches, Soc, Vol. 73, 3100.

The content of the developing agent according to the present invention out of all the developing agents in the developer is 70 mol% or more, preferably 70 mol%.
or more, and more preferably 90 mol% or more.

The amount of the compound of general formula (1) added to the color developing solution must be 1.5×10 −2 mol or more per color developing solution H, preferably 2. OX 10-”~1.0×
10-' molar range, more preferably 2.5X 1
It ranges from 0-" to 7.OX 10-" moles.

The color developing solution according to the present invention contains an alkaline agent, an anti-capri agent, a development accelerator, a buffer agent, an organic solvent, etc., as necessary.

The following method may be used to evaluate the color balance, which is an effect of the present invention.

A is the exposure condition when a photosensitive material is exposed to red light at the minimum exposure amount that provides the lowest density of a cyan image.
shall be.

Let B be the exposure condition when the green light is exposed at the minimum amount of exposure that provides the minimum density of the magenta image.

Let C be the exposure condition when the blue light is exposed at the minimum amount of exposure that provides the lowest density of the yellow image.

(Conditions for creating a yellow halftone image) After uniformly exposing the entire surface under condition A and then uniformly exposing the entire surface under condition B, 175 lines were created with the halftone dot area varying from 0% to 100%. When a transparent black-and-white halftone image is placed in close contact with the image and exposed to blue light from above, the dot gain (halftone dot % of the colored image) becomes 65 to 72% at a halftone dot area of 55.5%, and the white background density becomes almost constant. The exposure conditions that give the lowest practical density value were determined.

(Conditions for creating a magenta halftone image) Uniform exposure was performed on the entire surface under condition A, and then uniform exposure was performed in the same manner under condition C, and then the transparent black and white halftone image was adhered,
When exposing the original with green light from above, the halftone dot area of the original is 55.
Exposure condition E was determined under which the dot gain becomes 65 to 72% at 5%, and the white background density becomes almost constant and shows the lowest practical density value.

(Conditions for creating a cyan halftone image) After uniformly exposing the entire surface under condition B and then under condition C, the transparent black and white halftone image is closely attached, and when exposed with red light from above, the halftone Exposure conditions F were determined when the dot gain was 65 to 72% at an area of 55.5% and the white background density was approximately constant, indicating the lowest practical density value.

However, as described above, when determining the exposure conditions for E and F, if the minimum density of the white background and the dot gain amount are not compatible, the white background is given priority. Furthermore, if the spectral absorptions of the photosensitive layers are broad and overlap, correction is necessary. In that case,
It is necessary to combine D, E, and F and set the conditions again.

In the above, the halftone dots % 65 to 72% on the photosensitive material corresponding to 55.5% of the original indicates the halftone dots % on the printing proof; Since the amount of dot gain varies, it is not limited to this value.

The yellow magenta and cyan halftone dot images produced above were analyzed using a Sakura densitometer PDA-65.
From the reflection density measured with the corresponding blue light, green light, and red light, D': Halftone image reflection density Ds = Reflection density of 100% halftone dot D0: Find the reflection density of the white background, and use the Malev-Bis formula. Create a halftone reproduction curve as shown in Figure 1.Y.

The color balance can be evaluated from the halftone dots %S of the colored image at 55.5% and 25% from the halftone dot reproduction curves of the M and C images, respectively.

The range where color balance is appropriate is 55.5% of the dot area of the original.
, the magenta S (%) is within a range of 4% above and below the cyan S (%).

The S (%) of yellow is not the same as the S (%) of cyan,
The range is 6% lower than that.

When the dot area of the original is 25%, the range in which the color balance is appropriate is the range where magenta S (%) is 2% above and below the cyan S (%), and yellow S (%) is within the range of cyan S (%).
(%) or 3% lower than that.

If the halftone dot %S of the colored image is within the above range, the color balance from the highlights to the shadows will be good.

In the present invention, by employing the silver decagenide grains defined in the claims in the red-sensitive, green-sensitive and blue-sensitive emulsion layers, particularly the reproducibility of intermediate tones to highlights is excellent, It has become possible to obtain a reproduction close to the dot gain of printed matter. In the reproduction of halftone images, it is usually important to obtain halftone dots of good quality, that is, to obtain sharp halftone dots with few fringes at the periphery and no roughness. Achieving uniform dot quality between each photosensitive layer contributes to controlling the dot gain of each layer and achieving a good color balance between each layer. However, color photosensitive materials have a complex layer structure, and while each layer has its own spectral sensitivity, there is a structural problem in that each layer affects the image quality between the eyebrows. Until now, it has not been possible to achieve a uniform finish between each photosensitive layer.
It is impossible to obtain good color balance that approximates printed matter.

〔Example〕

Specific examples of the present invention will be described below, but the embodiments of the present invention are not limited thereto.

Example 1 An emulsion consisting of cubic silver bromide grains with an average grain size of 0.3 μm was prepared by simultaneously adding equimolar amounts of silver nitrate aqueous solution and potassium bromide aqueous solution to a gelatin aqueous solution at 50'O for 50 minutes using the double jet method. I got it. To this emulsion, a silver nitrate aqueous solution and a sodium chloride/potassium bromide mixed aqueous solution (molar ratio 1:1) were added simultaneously to obtain an average grain size of 0.45μ.
Cubic core consisting of a silver bromide core and a silver chlorobromide shell/
A shell emulsion (EM-1) was prepared.

In addition to the above emulsions, core/shell emulsions as shown in Table 1 below were prepared by varying the addition times of the silver nitrate aqueous solution and the halogen salt aqueous solution.

Using the above silver halide emulsion, each layer having the formulation shown in Table 2 was coated on a polyethylene resin-coated paper support to construct a silver halide color light-sensitive material for use as a sample.

Table-2 *Coating amount is based on silver equivalent.

D ■ D D ■ D C112CDOH (CH2)3303″ H υ■ ■ 03K SO,K C-1 CaH+7(n) 0=P-C,HI3(11) C8)++7(”) O-2 H C- C -1 T- T-2 TV-1 T-4 H V-2 HA -1 A-1 )I AA Na0sS CI C00CH*(CFxCFi)
zHCB, -COOCR, (CFICF) 28 The first layer to the first O layer were coated on the surface of a support laminated with polyethylene on both sides in the composition shown in Table 2. 5A-1 and 5A-2 were used as coating aids. was used, and H was used as a hardening agent.
A-1 and HA-2 were used.

The color balance of the above coated sample was evaluated using the following method.

Let A be the exposure condition when a photosensitive material is exposed to red light with the minimum amount of exposure that provides the lowest density of a cyan image.

Let B be the exposure condition when exposing to green light at the minimum amount of exposure that provides the lowest density of a magenta image.

When exposing to blue light, let C be the exposure condition when the exposure is performed at the minimum amount of light that provides the lowest density of a yellow image.

(Conditions for creating a yellow halftone image) After uniformly exposing the entire surface under condition A and then uniformly exposing the entire surface under condition B, 175 lines were created with the halftone dot area varying from 0% to 100%. When a transparent black-and-white halftone image is closely attached and exposed to blue light from above, S becomes 65 to 72% at a halftone dot area of 55.5%, and the white background density becomes almost constant, achieving the lowest practical density value. The exposure conditions were determined.

(Conditions for creating a magenta halftone image) Uniform exposure was performed on the entire surface under condition A, and then uniform exposure was performed in the same manner under condition C, and then the transparent black and white halftone image was adhered,
When exposed with green light from above, halftone area is 55.5%
Exposure conditions E were determined under which S is 65 to 72% and the white background density is approximately constant and exhibits the lowest practical density value.

(Conditions for creating a cyan halftone image) After uniformly exposing the entire surface under condition B and then under condition C, the transparent black and white halftone image is closely attached, and when exposed to red light from above, the halftone S is 65-7 at 55.5% point area
2%, and the white background density is almost constant, indicating the lowest practical density value. Exposure condition F was determined.

Furthermore, in order to adjust the color balance of yellow, magenta, and cyan, the S of each of the above colors is 65 to 72% at 55.5% of the dot area of the original, and the S (%) of magenta is
The exposure conditions for DlE and F are set so that the range is 4% above and below the S (%) of cyan, and the yellow S (%) is equal to or 6% lower than the S (%) of cyan. It was adjusted.

However, as described above, when determining the exposure conditions for E and F, if the minimum density of the white background and the dot gain amount are not compatible, the white background is given priority. Furthermore, if the spectral absorptions of the photosensitive layers are broad and overlap, correction is necessary. In that case,
It is necessary to combine D, E, and F and set the conditions again.

These exposed samples were processed through the following processing steps.

Processing process (processing temperature and processing time) (1) Immersion (color developer) at 38°C for 8 seconds (2)
Fog exposure -10 seconds at 1 lux (3) Color development 38℃ 2 minutes (4) Bleach fixing
35℃ 60 seconds (5) Stabilization treatment 25-3
0℃ 1 minute 30 seconds (6) Drying 7
8-80℃ 1 minute processing solution composition (color developer) Benzyl alcohol Cerium sulfate Ethylene glycol Potassium sulfite Potassium bromide Sodium chloride Potassium carbonate T-4 Hydroxylamine sulfate Diethylenetriaminepentaacetic acid Developing agent (Example 1-2) Fluorescent whitening Agent (4,4″-diaminostilbendisulfonic acid derivative) Potassium hydroxide diethylene glycol water was added to bring the total volume to 1Q. (Bleach-fix solution) Ferric ethylenediaminetetraacetic acid 1.0 g 2.0 g 15 cm (1 pH 1O, 20 Adjust to.

15 ra (1 0,015g tsQ 2.5g 0.8g 0.2g 25.0g O,1g 5.0g g 5.5g ammonium dihydrate 60, ethylenediaminetetraacetic acid 3g ammonium thiosulfate (70% solution) 100 mQ Ammonium sulfate (40% solution) Add 27.5 mQ water to bring the total volume to la, and adjust to pH 7.1 with potassium carbonate or glacial acetic acid.
Adjust to.

(Stabilizing liquid) 5-chloro-2-methyl-4-inthiazolin-3·one 1.0 g Ethylene glycol 10 gl-Hydroxyethylidene-1,1-diphosphonic acid 2.5 g Bismuth chloride 0.2 g Magnesium chloride 0. 1g ammonium hydroxide (28% aqueous solution) 2.0g sodium nitrilotriacetate 1.0g water was added to bring the total amount to ta, and the pH was adjusted to 7 with ammonium hydroxide or sulfuric acid.
Adjust to 0.

Note that the stabilization treatment was performed using a countercurrent method with a two-tank configuration.

From the reflection density of the yellow magenta and cyan halftone images produced as described above measured using Sakura densitometer PDA-65 using the corresponding blue light, green light, and red light, Dr: halftone image reflection density Ds: halftone dot Reflection density Do at 100% part: Find the reflection density of a white background, and calculate S at 55.5% and 25% of the halftone reproduction curves for Y, M, and C images, respectively, based on the Malev-Bis equation, as shown in Table 3. As is clear from Table 3, in the comparative example, the dot gain for cyan was too low and did not reach the desired level, or the dot gain for magenta and yellow was too low, destroying the color balance, whereas in the present example, the dot gain was too low and did not reach the desired level. With the combination of silver halide emulsions of the invention, halftone dot area of 55.5% and 25%
%, good color balance was obtained.

Further, coated samples similar to Samples No. and I in Table 3 were exposed under the conditions for producing yellow magenta and cyan halftone images shown above, and 4-amino -5.5 g of 3-methyl-4-amino-N-ethyl-N-(β-methanesulfamidoethyl)aniline sulfate instead of 5.5 g of -N-ethyl-N-hydroxylethylaniline sulfate (Example I2) The color tone of a sample treated with the same developer as above except that the developer was changed was visually evaluated.

As a result, the sample that was subjected to color development using I-2, which is a developing agent according to the present invention, had a more vivid color tone in both yellow magenta and cyan, and was suitable as a color proof.

Example 2 A fogging agent represented by B-1 below was added to each of the blue-sensitive silver halide emulsion layer, green-sensitive silver halide emulsion layer, and red-sensitive silver halide emulsion layer of Example-1. Example-1 except that 100+ag was added per mole of silver halide
A sample was prepared in the same manner.

The above coated sample was exposed to light in the same manner as in Example-1, and the color balance was evaluated. However, the processing method is as follows.

Processing steps (processing temperature and processing time) (1) Color development 38°C 2 minutes 30 seconds (2) Bleach-fixing 35°C 1 minute (3) Stabilization treatment 25-30°C 1 minute 30 seconds (
4) Drying 78-80℃ 1
The composition of the color separation developer is as shown below.

(color developer) Add water to make up to 1Q and adjust the pH to 11.80.

The same bleach-fixing solution and stabilizing solution as in Example-1 were used. The results are the same as in Example 1, whereas in the comparative example, the cyan dot gain was too low and a desirable color balance could not be obtained, or the magenta and yellow dot gains were too low and the color balance was disrupted. Good color balance could be obtained with the combination of silver halide emulsions of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a halftone dot reproduction curve in Example=1. S: halftone area of colored image Figure 1

Claims (1)

[Scope of Claims] After imagewise exposing a silver halide color photographic light-sensitive material having red-sensitive, green-sensitive and blue-sensitive internal latent image type direct positive silver halide emulsion layers sequentially on a support, In the method of forming a dye image by color development treatment, the silver halide grains contained in the silver halide emulsion layer each have an average grain size of 0.2 to 0.8 μm, and a maximum average grain size of Ratio of minimum average particle size (@r@_m_a_x/@
r@_m_i_n) is 1≦@r@_m_a_x/@r@
_m_i_n≦2.5, and the amount of coated silver contained in each silver halide emulsion layer is as shown in (a), (b), and (c) below.
A method for forming a dye image, further comprising a color developing solution used in the color development treatment containing 70 mol % or more of a compound represented by the following general formula [I] as a color developing agent. (a) Red-sensitive internal latent image type direct positive silver halide emulsion layer: 1.5 to 5.0 mg/dm^2 (b) Green-sensitive internal latent image type direct positive silver halide emulsion layer: 1.5 ~7.0mg
/dm^2 (c) Blue-sensitive internal latent image type direct positive silver halide emulsion layer: 2.0 to 7.0 mg/dm^2 General formula [
I] ▲There are mathematical formulas, chemical formulas, tables, etc.▼ [In the formula, R_1 and R_2 each represent a substituted or unsubstituted alkyl group, R_1 and R_2 may be the same or different, and R_1 and R_2 are They may be bonded to each other to form a ring. ]