JPS59180547A - Image forming method - Google Patents

Abstract

PURPOSE:To form simply a dye image by heating in a state in which water is not practically contained by releasing a movable dye when photosensitive silver halide is reduced to silver by heating and by transferring the dye to a dye fixing layer under pressure. CONSTITUTION:A photosensitive material contg. photosensitive silver halide, a binder and a compound which takes part in a reaction for reducing the photosensitive silver halide to silver at a high temp. to produce or release a movable dye on a support is heated in a state in which water is not practically contained after or during imagewise exposure to form imagewise the movable dye. The movable dye is transferred under pressure and fixed to the dye fixing layer of a dye fixing material adhered to said photosensitive material to form an image. By applying pressure, the movable dye can be uniformly transferred, and the transfer efficiency can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a new method for forming dye images by heating in a substantially water-free state.

The present invention further relates to a new photosensitive material having a dye-donating substance that reacts with photosensitive silver halide upon heating in a substantially water-free state to release a hydrophilic dye.

The present invention particularly relates to a new method for obtaining dye images by transferring dyes released by heating to a dye fixing layer.

Photographic methods using silver halide have traditionally been used most widely because they have superior photographic properties such as sensitivity and gradation control compared to other photographic methods such as electrophotography and diazo photography. In recent years, a technology has been developed that allows images to be easily and quickly obtained by changing the image forming method for photosensitive materials using silver halide from the conventional wet processing using a developing solution to a dry processing using heating, etc. It has been.

Heat-developable photosensitive materials are well known in the art, and for information on heat-developable photosensitive materials and their processes, see, for example, Fundamentals of Photographic Engineering (published by Corona Publishing, 1979), pages 553-555, and Image Information, published in April 1978, page 40. + Neblet
ts Handbook OF Photograp
Hy and Reprography 7th Ed
, (VanNostrsnd Re1nhold
C.

page 32-33 of U.S. Pat. No. 3,152.
゜904, No. 3. ．． No. 301,678, No. 3,392
．． No. 020, No. 3.457,075, British Patent No. 1
No. 131.108, No. 1,167.777 and No. ri - Chidisclosure Magazine June 1978 Issue 9-15
Page (R1:)-17029).

Many methods have been proposed for obtaining color images. A method of forming a color image by combining an oxidized developer with a coupler is described in U.S. Pat.
, 531,286, a P-phenylene diamine reducing agent and a phenolic or active methylene coupler; in U.S. Pat. No. 3,761,270, a P-amine phenolic reducing agent is used, Research Disclosure Magazine September 1975 31.32
On the page.

Sulfonamidophenolic reducing agents are also proposed in US Pat. No. 4,021,240, in which a sulfonamidophenolic reducing agent is combined with a 4-equivalent coupler.

However, in this method, a reduced silver image and a color image are simultaneously generated in the exposed area after thermal development, so that the color image becomes cloudy. To solve this problem, there is a method of removing the silver image by liquid processing or transferring one dye to another layer, such as a sheet having an image-receiving layer. It has the disadvantage that it is not easy to transfer only words.

In addition, a method of introducing a nitrogen-containing heterocyclic group into a dye to form a silver salt and releasing the dye by heat development is described in Rica Disclosure Magazine, May 1978 issue, pages 54-58.
D-16966. With this method, it is difficult to suppress the release of dye in areas that are not exposed to light, and a clear image cannot be obtained, so it is not a common method.

Regarding the method of forming positive color images by photosensitive silver dye bleaching method, for example, 1 Research Disclosure Magazine, April 1976 issue, pages 30-32 (RD-14
433), December 1976 issue of the same magazine, pages 14-15 (
RD-15227) and U.S. Pat. No. 4,235,957, etc., useful dyes and bleaching methods are described.

However, this method requires extra steps such as stacking and heating activator sheets to accelerate the bleaching of the two dyes, and a cleaning agent. It had the disadvantage of being gradually reductively bleached by free silver.

Further, regarding methods of forming color images using leuco dyes, for example, US Pat. No. 3,985,565 and US Pat.
, No. 022,617.

However, this method has the disadvantage that it is difficult to stably incorporate the leuco dye into the photographic material, and the material gradually becomes colored during storage.

Furthermore, the two or more methods generally require a relatively long time for development, and the resulting images also have the drawback of high fog and low density.

In order to improve these drawbacks, the present inventors have provided an image forming method using silver halide, in which a movable dye is formed in the form of an image, and the dye is fixed and then moved (
Patent application No. 56-157798. 56-177611,,
57-3'1.976. 57-32547). In one embodiment of this method, a dye fixing material having a dye fixing layer is provided separately from the photosensitive material, and the dye is fixed to this fixing layer. In this embodiment, the photosensitive material and the dye fixing material are need to be brought into contact. However, simply bringing the dye into contact with the dye may cause uneven movement of the dye, the speed of movement may be too slow, or a sufficient amount of the dye may not move to the dye fixed layer, so it cannot be said to be perfect.

The present invention seeks to make the above embodiments more complete.

An object of the present invention is to provide a new method for forming dye images by heating in a substantially water-free state, and to solve the drawbacks of hitherto known photosensitive materials. be.

The second object of the present invention is to provide a simple method for obtaining a color image, and the third object is to provide a method for forming a color image by thermal development, which has a short development time and high one-color image density. It is.

The purpose is to provide at least a photosensitive silver halide on a support, a binder, and when the photosensitive silver halide is reduced to silver under high temperature conditions, chemically involved in this reaction to form a mobile dye or A photosensitive material containing three types of compounds to be released (hereinafter simply referred to as dye-providing substances) is heated in a substantially water-free state after or simultaneously with imagewise exposure to form a mobile dye in the form of an image. An image forming method in which a mobile dye is moved and fixed by applying pressure to a dye fixing layer in a dye fixing material that is in close contact with the above-mentioned photosensitive material.

Dye images of the present invention refer to multicolor and monochrome dye images;
In this case, the monochromatic image includes a monochromatic image obtained by mixing two or more types of dyes.

The pressure varies depending on the implementation and the materials used.

0, 1-100 kg/cA, preferably 1-50
kg/Ca is appropriate.

In the present invention, by applying a certain amount of pressure, the mobile dye formed in an image can be moved uniformly, and the moving efficiency can be improved. It is truly unexpected that dye transfer can be promoted by increasing the adhesion pressure, but by increasing the degree of adhesion between the photosensitive material and the dye fixing material, the temperature distribution in the material becomes uniform, and this It is presumed that this promotes the movement of the dye.

The effects of the present invention are significant in embodiments in which dyes are transferred under high temperature conditions. In the case of dye transfer, the high temperature state is
A temperature of 60°C or higher is suitable. The high temperature state may be formed using the effect of heating for development.

It may be formed by heating again.

The effects of the present invention are particularly remarkable in embodiments in which dye transfer is carried out at high temperatures in the presence of a hydrophilic hot solvent.

This is because in this embodiment, since no water or the like is used, the swelling of the binder film is extremely small, and in order for the two dyes to move smoothly, it is essential to apply pressure to bring the photosensitive material and the dye fixing material into close contact.

A hydrophilic thermal solvent is a solid state at room temperature, but at high temperature (
601c), supra) A compound that is in a liquid state,
(Inorganic/Organic) means a compound having a value greater than 1 and a solubility in water at room temperature of 1 or more. For details on this, see Volume 11 of Chemistry, page 719 (1
957). This compound is also described in the patent application filed by Fuji Photo Film Co., Ltd. on March 16, 1980, with agent Kiyoshi Takita, entitled "Dry Image Forming Method." The (inorganic/organic) value of the hydrophilic heat solvent is preferably 1.5 or more, particularly preferably 2 or more;
Must be greater than the value. Further, the molecular weight of the hydrophilic heat solvent is preferably 200 or less, particularly preferably 100 or less. The melting point of the hydrophilic thermal solvent is 40°C to 250°C, preferably 40°C to 200°C, more preferably 40°C to 15°C.
It is 0°C.

The hydrophilic thermal solvent is contained in the photosensitive material and/or dye-fixing material in an amount of 5 to 500% by weight, preferably 20 to 200% of the total amount of the photosensitive material and/or dye-fixing material minus the amount of the hydrophilic thermal solvent. % by weight, more preferably 30-15
The hydrophilic thermal solvent used in a coating amount of 0% by weight is usually dissolved in water and dispersed in the binder, but it may also be used after being dissolved in alcohols 2, such as methanol, ethanol, etc.

Examples of hydrophilic heat solvents are ureas and pyridines.

There are amides, sulfonamides, imides, alcohols, oximes, and other heterocycles.

Preferred specific examples are shown below.

(1) O(2) 0 11]1 l-f2 NCN1-12 , H2
NCNcli31] 1 7' 1(2C----N 1.1 11(i C)(3CNH21-IOCH2CNH2(11)
(12>Nl2 SO
2Nl2 110CH2CH-CIICH208H Hf (A preferred embodiment of the present invention is a mode in which the material is passed between two heated rollers, and the pressure between the rollers is adjusted to heat the material. In other cases, the material is heated by stacking the film surfaces of the material facing each other. Then heat the second part using a roller or an elastic flat object such as silicone rubber.

When silver halide is reduced to silver under high temperature conditions, a mobile dye is chemically involved in this reaction and a mobile dye is released or produced.1For example, in a negative-working silver halide emulsion, halogenation occurs upon exposure to light. Development nuclei are formed in the silver, and this silver halide undergoes an oxidation-reduction reaction with a reducing agent or a reducing dye-donating substance. (1) The reducing agent is oxidized and becomes an oxidized form. A reaction in which a mobile dye is produced or released by reacting with a reactive substance (described in Japanese Patent Application No. 1776111/1983).

(2) A reaction in which the reducing agent is oxidized and the remaining reducing agent and the dye-donating substance that releases a mobile dye at high temperatures undergo redox, the dye-donating substance is reduced, and the two dyes are no longer released. The reaction is described in the patent specification (C) filed in February 1982 by Fuji Photo Film Co., Ltd., whose "title of the invention" is "image forming method."), ("' ?3) A reaction in which a reducing dye-donating substance is oxidized and a mobile dye is released at that time (patent application Sho 5C+
-157798. >, (4) A reaction in which a dye-donating substance that releases mobile dyes is oxidized at high temperatures and no longer releases mobile dyes (February 1980 i)
SE, filed by Fuji Photo Film Co., Ltd. (described in the specification of inter-patent (B) where the title of the invention is "image forming method") 0) means four. When a positive emulsion is used instead of a negative emulsion, the above reaction occurs in the non-exposed area. In reactions (1) and (3), a dye image with a positive relationship of 7 to 1 silver is changed, <2),
<4), a dye image in a negative relationship is obtained.

Compounds that release mobile dyes by reaction (1) include those described in Japanese Patent Application No. 177,611/1982. This compound is represented by the general formula C-LD, where D represents an image-forming dye described below, and 1. represents a linking group such that the C-1-bond breaks down during the reaction between the oxidized product of the reducing agent and C.

C represents a substrate that binds to the oxidized form of the reducing agent; for example, active methylene, active methine, phenol residue, naphthol residue, and is preferably represented by the following general formulas (A) to (G).

II RIC0CHCOR2(C) 　　　　1 N H RX, R2, Ra, and R4 are each hydrogen atoms.

Alkyl group, cycloalkyl group, aryl group, al-2
xy group, aralkyl group, al:7xyalkyl group, aryloxyalkyl group. N-Substituted power represents a ruhamoyl group, an alkylamino group, an arylamino group, a halogen atom, an acyloxy group, an acyloxyalkyl group, or a cyano group; -W-substituted sulfamoyl group. Carbamoyl group, N-substituted ruhamoyl group, acylamino group, alkylsulfonylamino group, arylsulfonylamino group, alkyl group, ryol group,
Alkoxy group, ryoloxy group, aralkyl group. It may be substituted with an acyl group or the like.

Substrate C has the effect of binding to the oxidized form of the reducing agent and releasing the EJ dynamic dye. The dye-donating substance itself must have enough Halas 1-groups to prevent it from diffusing into other layers. The ballast group is an alkyl group.

A hydrophobic group such as an alkoxyalkyl group or an aryloxyalkyl group is preferable, and the total number of carbon atoms in the ballast group is preferably 6 or more, and the total carbon number of C is preferably 12 or more.

Examples of compounds that form mobile dyes in the reaction (1) include Japanese Patent Applications No. 57-319.76 and No. 57-32547Q.
A coupler as described above has a moiety that impedes diffusion of the coupler immediately on the part of the leaving group.

For example - couplers which have a ballast group of sufficient size and a portion of the polymer derived from vinyl monomers, but which do not have anything in the coupler core that would impede the diffusion of the dye formed.

Compounds used in reaction (2) include US Pat.
Examples include those that cause an intramolecular nucleophilic reaction as described in No. 39,379.

Reaction (4) includes reduced forms of the compounds described in the above US patent specifications.

Compounds used in reaction (3) are disclosed in Japanese Patent Application 1986-1.
Examples include reducing dye-donating substances that release hydrophilic diffusible dyes as described in No. 57798.

The reducing dye-donating substance that releases the hydrophilic diffusible dye used in the present invention has the following general formula % formula % () where Ra is a reducing substrate that is oxidized by silver halide. D represents an image-forming dye portion having a hydrophilic group.

The reducing substrate (Ra) in the dye-donating substance TF-a 802D has a redox potential relative to a saturated calomel electrode in polarographic half-wave potential measurement using acetonitrile as a solvent and sodium perchlorate as a supporting electrolyte. /, 2V or less is preferable. Preferred reducing substrates (Ra) have the following general formulas (n) to (IX).

3 H Ni(- H- 3 R, a where RaXRaXRaXRa is a hydrogen atom, an alkyl group, a cycloalkyl group, an alkyl group, an alkoxy group, an aryloxy group, an aralkyl group, an acyl group, an acylamino group, an alkylsulfonyl group, respectively. Amino group, arylsulfonylamino group, aryloxyalkyl group, alkoxyalkyl group, N-substituted carbamoyl group, N-fit
Substituted sulfamoyl group, halogen atom, alkylthio group,
The middle part of the arylthio group represents a selected group, and the alkyl group and aryl group in these groups can further be an alkoxy group, a halogen atom, a hydroxyl group, a cyano group, an acyl group, an acylamino group, a substituted carbamoyl group, a substituted sulfamoyl group. may be substituted with a group, an alkylsulfonylamine group, an arylsulfonylamino group, a substituted ureido group, or a carboxy group.

Furthermore, the hydroxyl group and amino group in Ra may be protected with a protecting group that can be regenerated by the action of a nucleophilic reagent.

In a more preferred embodiment of the present invention, the reducing substrate Ra is represented by the following formula (X).

Here, G represents a hydroxyl group or a group that provides a hydroxyl group through hydrolysis. Ra represents an alkyl group or an aromatic group. n is an integer between / and 3.

When X10 is n −/, it is an electron-donating substituent; when n = 2 or 3, it can be the same or different substituents, and when seven of them are electron-donating groups, it is a second or The third one is an electron-donating group or a halogen atom, and may form a condensed ring with X itself or a ring with ORa.

The total number of carbon atoms of both Ra and X is g or more.

Among those included in formula (X) of the present invention, in a more preferred embodiment, the reducing substrate Ra is represented by the following formulas CXa > and (Xb).

Here, Ga is a hydroxyl group or a group that provides a hydroxyl group through hydrolysis. Ra and Ra may be the same or different, each an alkyl group, or Ra and Ra may be linked to form a ring.

3 R3 represents a hydrogen atom or an alkyl group, and R3 represents an alkyl group or an aromatic group. X and X may be the same or different and each represents a hydrogen atom, an alkyl group, an alkyloxy group, a halogen atom, an acylamino group or an alkylthio group, and furthermore, Ra and 2 is also good.

Ga Here, Ga represents a hydroxyl group or a group that provides a hydrolyzed hydroxyl group, Ra represents an alkyl or aromatic group, X represents a hydrogen atom, an alkyl group, an alkyloxy group, a halogen atom, an acylamino group, or an arylthio group, and X2 and R%O may be connected to form a ring.

Specific examples included in (X), (Xa), and (Xb) are US≠, 036. ≠2g, Tokukai Shota &-/,! &4
t, No. 2, and 31. -/A/30, respectively.

In another more preferred embodiment of the present invention, the reducing substrate (Ra) is represented by the following formula (XI).

(However, the symbols oa, Xto, I (, 1a0 and n are synonymous with oa, x, and Ran of formula (X).) Among those included in (XI) of the present invention, in a more preferred embodiment , the reducing substrate (Ra) is represented by the following formulas (X[a) to (Xlc).

However, Ga is a hydroxyl group or a group that gives a hydroxyl group by hydrolysis; 1 Ra and Ra may be the same or different and each represents an alkyl group or an aromatic group; Ra and Ra combine to form a ring; 5 Ra represents a hydrogen atom, an alkyl group or an aromatic group; 4 aa represents an alkyl group or an aromatic group; 5 R, a represents an alkyl group, an alkoxy group, an alkylthio group, an arylthio group , represents a halogen atom, or an acylamino group; p is 0. / or 2; R, %4 and R2a5 may be bonded to form a condensed ring<;Ra and Ra may be bonded to form a condensed ring<;Ra and Ra may be combined to form a fused ring, and Ra, Ra, Ra18%4 and (Ra
) has a total carbon number greater than 7.

However, Ga represents a hydroxyl group or a group that gives a hydroxyl group by hydrolysis; 1 Ra represents an alkyl group or an aromatic group; 2 几a represents an alkyl group or an aromatic group; 3 Ra represents an alkyl group, an alkoxy group, an alkylthio group , represents an arylthio group, a halogen atom or an acylamino group; q is 0. / or 2; R3a2 and R3,3 may be combined to form a condensed ring<; Ra and Ra may be combined to form a condensed ring31
33 〈; 几a and Ra may be combined to form a condensed ring; and the total number of carbon atoms in Ra XRa 1 (Ra)q is greater than 7.

In the formula, Ga represents a hydroxyl group or a group that provides a hydroxyl group by hydrolysis; R411 represents an alkyl group or an aromatic group; 2 Ra represents an alkyl group, an alkoxy group, an alkylthio group, an arylthio group, a halogen atom, or an acylamino group. represents a group; r is 0. / or λ represents the carbon atoms in the condensed ring that participate in the bonding to the phenol (or its precursor) mother nucleus (---a -> is one of the condensed rings) A part of the carbon atoms in the hydrocarbon ring (excluding the above-mentioned tertiary carbon atoms) may be substituted with oxygen atoms, or Hydrogens may have a substituent, or an aromatic ring may be fused; However, RIa, (Ra )r
Specific examples included in the above (X[) and (X[a) to (Mb)] are disclosed in Japanese patent application Sho t+-it/3i, same! 7-&jO1
It is described in J7-Hiroo Ko3.

The essential parts of formula (III) and formula (IV) are para-
(sulfonyl)amine phenol moiety.

Specific examples include US3, Ri2za, 3i, 2, U
Sa,,o'y6. Yukiri, US Published
Patent Application B 3
! I, 1r73, USμ, /3 evening, riλri, US≠,
23g.

Reducing substrates disclosed in No. 1, No. 2006-2012 are also effective as the reducing substrate (Ra) of the present invention.

In another more preferred embodiment of the present invention, the reducing substrate (Ra) is represented by the following formula (Kari).

Here, Ba1last contains a diffusion-resistant group.

Ga represents a hydroxyl group or a hydroxyl group precursor.

oA represents a group that forms an aromatic ring and forms a naphthalene ring together with a benzene ring. n and m are/or 2
Hail an integer that turned out to be.

Specific examples included in the above calculation are US-≠, θj3゜3/2
It is described in.

The reducing substrates of formulas (V), (■), (■) and (IX) are characterized by containing a heterocycle, and specific examples include US≠, /rig, 23s, JP-A Showa j3-≠673
0, TJSII-, 273, 1, 5-etc. Specific examples of the reducing substrate represented by formula (Vl) are US≠, /'A? .

There is a description in g2.

The following properties are required for the reducing substrate Ra.

1. It is rapidly oxidized by silver halide and efficiently releases a diffusible dye for image formation through the action of a dye release aid.

2. The dye-donating substance is hydrophilic or hydrophobic and is resistant to diffusion in the binder, and only the released dye needs to be diffusible. Therefore, the reducing substrate l (is a large hydrophobic To have sex.

3. It has excellent stability against heat and dye release aids, and does not release image-forming dyes until oxidized.

4. Easy synthesis.

Next, a preferred specific example of Ra that satisfies these conditions will be shown. In the examples, NH- represents a linkage with a dye moiety.

? H 26 C5H1□ ([) H 6H13 CH3-C-CH5 I 3H7 CH3 OC16H33 0C16H33 0C16H33 0C16H33 l-l- H- H- 1 H- Dyes that can be used as image-forming dyes include azo dyes, azomethine dyes, and anthraquinone dyes. , naphthoquinone dyes, styryl dyes, nitro dyes, quinol/dyes, cal, -nivinyl dyes, and lid+cocyanine dyes, representative examples of which are shown on the dye side. Incidentally, these dyes can also be used in the form of temporary short-wavelength dyes that can be multicolored during development.

yellow 52 53 Ra　R・a 2 Ra yakuza 2 R,a H magenta 0 liters t1 Ordinary t1 \ R.

1 Ra to R52 \1 0 03 Ra R+ a In the above formula, Ra -Ra each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an alkoxy group,
Aryloxy group, aryl group, acylamino group, acyl group, cyan group, hydroxyl group, alkylsulfonylamino group, arylsulfonylamino group, alkylsulfonyl group, hydroxyalkyl group, anoalkyl group, alkoxycarbonylalkyl group, alkoxyalkyl group, From aryloxyalkyl group, nitro group, halogen, sulfamoyl group, N-substituted sulfamoyl group, carbamoyl group, N-substituted carbamoyl group, aryloxyalkyl group, amine group, substituted ami7 group, alkylthio group, arylthio group represents a selected substituent, and the alkyl group and aryl group moiety in these substituents further includes a halogen atom, hydroxyl group, cyan group, acyl group, acylamino group, alkoxy group, carbamoyl group, substituted carbamoyl group, sulfamoyl group, substituted It may be substituted with a sulfamoyl group, carboxyl group, alkylsulfonylamino group, arylsulfonylamino group or ureido group.

Hydrophilic groups include hydroxyl group, carboxyl group, sulfo group,
Phosphoric acid group, imide group, hydroxamic acid group, quaternary ammonium group, carbamoyl group, substituted carbamoyl group, sulfamoyl L [substituted sulfamoyl group, sulfamoylamino group, substituted sulfamoylamino group, ureido group, substituted ureido group, Examples include an alkoxy group, a hydroxyalkoxy group, and an alkoxyalkoxy group.

In the present invention, those whose hydrophilicity is significantly increased by dissociating protons under radical conditions are particularly preferred, including phenolic hydroxyl groups, carbamoyl groups, sulfo groups, phosphoric acid groups, imide groups, hydroxamic acid groups, Includes (substituted) sulfamoyl group, (substituted) sulfamoylamino group, etc.

The characteristics required for image-forming dyes are: /) having a hue suitable for color reproduction; 2) having a large molecular extinction coefficient;
3) stability against light, heat, and other additives such as a dye release aid contained in the system; and gh) ease of synthesis. Specific examples of favorable image-forming dyes that meet these conditions are shown below. Here FI2N-8
o2 represents a binding site with a reducing substrate.

yellow SO□NH2 \ SO3NH2 os02NH2 Magenta OC■(3 02NH2 NHCOCH3 H3 Cyan S02NH2 FI H Next, specific examples of preferred dye-providing substances will be shown.

(2) C4H9(shi) C4H9([) (4) oc engineering. H33 C4H9(t) H H C4H9(E) (11) oil CI-■3C4H9(0 (12) H C4H9(t) (13) (]( , (1,4) (15) (16) \ C4H9( t) \ C4FI9(t) C4H9(L) C4H9(t) S(J2ul-13 (21) (22) (23) Su(24) (25) H Ushi16'33 (28) OC161133 0C□6H33 0C16H33n QC+6H33-n (35) OC16H33-n (36) OC16H33 (38) H3CH3 (39) (40) 16H330CH3 (43) (44) 1-1 0C16H33n (45) H (g) 18FI3□-〇 (46) ( 47) CI-I C1-13 0C16'33' QC,6H33-n (53) (54) H (55) (56) H ( (58) Su'16H33 CH3-C-CH3 嘱3H7 (°”)oH OC16■J33 ””)OH \ 16H33 (su) (67) (69) H H H (71) H In addition to the above specific examples, USv, o'sj', ≠2g, Tokukai Shoj/2t≠2
, same rt-i (, i3o, same taro/3/, same j7-t
jO, same tough-≠0173.3, ri21, 3/2, US
v, 07 Otsu, Yu λU S Published p
agent Applicationj/ , t73
,USv,/3j,9.2F,II,/9F,23
j, JP-A Showa 3-11t730, u3g, 173#
j! ;, (JSI/-,,/Itri.

1?2, TJSll, /112.1ri/, USII, 2
Compounds described in 1, r2, /20, etc. are also effective.

Furthermore, USv, oi3. Otsu 33, TJ, 94L, /!
6, tθri, US4j, lag, btt/, U
S4'.

/6! , rig7, USA, /lr, ttx3, U
Sv, /13,7! ;! ;, USIA, 2≠A, Hiro/Hiro, USv7.2 Otsuza, Otsu2r, US Hiro, λhiror, oλg
1 Japanese Patent Publication No. 11-71072, 1+-kojf737, same! Dye-donating substances that emit yellow dyes such as those described in JJ'7414, 31-/34#1A, j2-/θ6727, ti-7ip 3θ, and the like are also effective in the present invention. Also US3° 34I', ,!
7 Otsu, fJs4t, De32.3gO, US3, Ri3/,
/'l'l, CJS3. q3x, 3g/,t,,,
,i3+,,2/,g,g,2'%,Usll-,jJ
−j, j.

ri, Tokukai Showa 3 Otsu-730, f7, same Jl, -710 Otsu 0
, Same 3! ;-/31/, I30, same jj-≠0≠θノ,
33-3/, IO'l, j3-23z no g1 j,
210 Otsu 727, N53"-, 33/'12, N5!-
, f 33 Releases the mazenota pigment listed in ivy etc.
Substances that contain dye-absorbing T9 are also useful in the present invention.恷kU
s3. ri29,7ot0,US? ', θ/3. Otsu 3s,
Shi J s, 3, Ta 112. 9
g7, U8p. -273.

70, US4t, /l/:g, Otsu41.2, US41
-, /, S'3.7 tag, USA, /11.7, . 3
'4&, US≠.

/ Otsu j, 23g, USII-, 24 Otsu, ayty-
, US Hiro 1. ! Otsuza, otsu,! 3-1 Japanese Patent Publication Showa J[-710
1/, same, t 3-17 and! 3, 3.2-g127
, same j3- / g 3.3,! Dye-donating substances that release cyan dyes such as those listed in No. 3 are also effective in the present invention.

) or more may be used in combination with the ℃ fertile substance.

In this case, two or more of the same pigment may be used in combination for one color, or two or more of the same pigment may be used in combination to produce black color.

The dye-donating substance is from 10m9/m to 7. ! ; It is appropriate to use within the range of g/J, preferably, ! Oguri is used in the range from omg7J to iog7J. In the present invention, the mobile dye is chemically associated with the exposed halogenated tK and released or formed from the dye-donating material in an imagewise manner, and this reaction is carried out at high temperatures and in a substantially water-free manner. It happens in a state. Here, high temperature refers to a temperature condition of 80°C or higher, and a dry state that does not substantially contain water refers to a state in which there is equilibrium with moisture in the air or a state in which there is no water supply from outside the system. . This kind of situation is
t + i c o r y o r t h
ephOtographic process"4t
h Fd, (Edited by T, H,
James, Macmillan) 374
It is listed in U. The fact that a sufficient reaction rate was not exhibited even in a dry state substantially free of water can be confirmed from the fact that the reaction rate of the sample vacuum-dried for 1 hour at 10-''VNVA Hg did not decrease by 1 to no.

The reaction of the present invention proceeds particularly well in the presence of an organic silver salt oxidizing agent and does not result in image densities as high as 11 TJ. Therefore, the coexistence of an organic silver salt oxidizing agent is a particularly preferred embodiment-C.

The reducing agents used in the present invention include the following.

Hydroquinone compounds (for example) \ite'tniaquinone.

2.5-dichlorohydroquinone, 2-chlorohydroquinone), aminophenol compounds (e.g. 4-aminophenol, N-methylaminophenol, 3-methyl-4-aminephenol, 3.5-dibromoaminophenol), cake': 1-l compounds (e.g. catechyl, 4-cyclohexylcadecol).

7 Phenylenecyamine compounds (e.g. -p, phenylenecyamine, 3-methyl-N-ethyl-N-ethyl-p-phenylenecyamine, N,N,N',N'-teI-ramethyl-p-phenylenecyamine Renxiamin).

More preferable reducing agents include the following.

3-Biraduridone compounds (e.g. 1-) di-2-3-
Hyrazolidone, 1-furnyl-4,4-dimethyl-3
-pyrazolidone, 4-hydroxyme-y-4-methyl-1-phenyl-3-virapritone, l-m-tolyl-3-pyrazolidone, 1-p-)cru-3-pyrazolidone, 1-phenyl-4-methyl-3- and Labridon, 1
-Phenyl-5-methyl-3-pyrazolidone, ■-Phenyl-4,4-bis(hydroxymethyl)-3-virapritone, 1,4-di-methyl-3-pyrazolidone, 4
-Methyl-3-pyrazolidone, 4,4-dimethyl-3-
Pyrazolidone, 1-(3-chlorophenyl)-4-methyl-3-virapritone, 1-(4-chlorophenyl)-
4-Methyl-3-pyrazolidone, 1-(4-tolyl)-
4-Methyl-3-pyrazolidone, 1-(2-tolyl)
-4-Methyl-3-virapritone, I-"(4-1-lyl)-3-pyrazolidone, 1-(3-tolyl)-3-virapritone, 1.=(3-1lyl)-4,4- dimethyl-3-pyrazolidone, 1-(2-1-lifluoroethyl)-1,4-dimethyl-3-pyrazolidone, 5-methyl-3-pyrazolidone).

Combinations of various developers may also be used, such as those disclosed in U.S. Pat. No. 3,039,869.

In the present invention, the amount of the reducing agent added is 0.01 to 20 mol, particularly preferably 0.1 to 10 mol, per mole of silver G.

The dye-donating substance of the present invention is disclosed in U.S. Patent No. 2,322.02.
It can be introduced into the layer of the photosensitive material by a known method such as the method described in No. 7. In that case, the following high boiling point organic solvents and low boiling point organic solvents can be used.

For example, fucuric acid alkyl esters (dibutyl fucrate, dioctyl phthalate, etc.), phosphoric acid esters (
diphenyl phosphate, triphenyl phosphate,
tricresyl phosphate, dioctyl butyl phosphate), citric acid esters (eg acetyl tributyl citrate).

High boiling point organics such as benzoic acid esters (octyl benzoate), alkylamides (e.g. diethyl lauryl'amide), fatty acid esters (e.g. dibutoxyethyl succinate, dioctyl azelate), trimesic acid esters (e.g. tributyl trimesate) Solvent or organic solvent with a boiling point of about 30°C to 160°C 1 For example, lower alkyl acetate such as ethyl acetate, butyl acetate, ethyl propionate, secondary butyl alcohol, methyl isobutyl ketone, β-ethoxyethyl acetate, methyl cellosolve acetate, cyclohexanone, etc. After dissolving in
Dispersed in hydrophilic colloids.

The above-mentioned high boiling point organic solvent and low boiling point organic solvent may be mixed and used.

Also, Japanese Patent Publication No. 51-39853, Japanese Patent Publication No. 51-5994
The dispersion method using a polymer described in No. 3 can also be used. Furthermore, when dispersing the dye-donating substance in the hydrophilic colloid, two types of surfactants can be used, including those listed as surfactants elsewhere in this specification. You can use it.

The amount of the high boiling point organic solvent used in the present invention is 10 g or less per 1 g of the dye-providing substance used.

Preferably it is 5g or less.

In the present invention, even when using a reducing dye-donating substance, a so-called auxiliary developer can be used as necessary. The auxiliary developer in this case is one that is oxidized by silver halide and has an oxidized form of fj that oxidizes the reducing substrate Ra in the five-dye donor substance.

Useful auxiliary developers include H-Itroquinone, T-Butyl-Hy! Alkyl-substituted hydroquinones such as roquinone, 2,5-dimethylhydride and quinone, catechol cheeks, Pi1
: 1 galol, rishi 70 high 10 quinone and schiff! Halogen-substituted hydroquinones such as rohydroquinone in
n, alkyl-substituted hydroquinones such as methoxyha-itroquinone, and polyhydroxyhenzene derivatives such as methylhydroxynaphthalene.

In history, methyl kalate, American: 1 Lupic acid, ascorbic acid derivative 4, ITJ, N, N'-cy(2-ethoxyethyl)hydroxylamine and other hydroxylamines 2 l-phenyl-3-virapritone, 4 -Pyrazolins such as methyl-4-hydroxymethyl-1-phenyl-3-pyrazolidone, and redactyl compounds.

Hy-1-loxytetronic acids are useful.

The auxiliary developer can be used in a certain concentration range.

Useful concentration range is from 0.0005 times molar to 20 times silver
A particularly useful concentration range is 0.001 times molar to 4 times molar.

Silver halides used in the present invention include silver chloride, silver chlorobromide, silver chloroiodide, silver bromide, silver iodobromide, silver chloroiodobromide, and silver iodide.

In the present invention, when silver halide is used alone without using an organic silver salt oxidizing agent, particularly preferred silver halide contains silver iodide crystals in a part of the grains. It is. That is, it is particularly preferred that silver halide exhibits a pattern of pure silver iodide when subjected to X-ray diffraction.

Photographic materials contain two or more types of atoms.
In the usual Rogeno silver arsenide emulsion, Roken F silver grains form a complete mixed crystal. For example, in a silver iodobromide emulsion, when X-ray diffraction of the grains is measured, there are no hair turns in silver iodide crystals or silver bromide crystals, but there are X-ray hair turns at positions depending on the mixing ratio.

Particularly preferred silver halides in the present application include silver chloroiodide, silver iodobromide, and silver chloroiodobromide, which contain silver iodide crystals in their grains and therefore exhibit X-ray/ξ turns of silver iodide crystals. .

For example, silver with iodine can be prepared by coldly pouring a silver nitrate solution into a potassium bromide solution to form silver bromide grains without stirring. Obtained by reducing the force to 0.

Two or more types of silver halide having different sizes and/or locations/compositions may be used in combination.

The average particle size of the silver particles used in the present invention is preferably from Q,QO/μm to /0)im, and more preferably from 0.007 μm to 5 μm.

The present invention uses arsenic compounds, such as sulfur, selenium, tellurium, etc.
Gold, platinum, 11-compounds such as Mira/Lamb, Mouth/Lamb and Iridium (chemical sensitizers,...F-hybridization can be achieved by using reducing agents such as Roken R, Tin, etc., or a combination of these. May be sensitized.For details, see °'The Theory.
of tho Photography, 1cPro
cess” by T. H. James, Chapter J/Geta page ~/Otori page.

A particularly preferred embodiment of the present invention is one in which organic silver hydrochloride 1 arsenic is coexisted, but exposed to light in the presence of Rodan 1 arsenic at a temperature of 0°C or higher, preferably 100°C.
When the image-forming substance is heated to
1. It forms a silver image by reacting with a reducing agent coexisting with the image-forming substance if necessary. By coexisting with an organic silver hydrochloric acid solution, a photosensitive paulownia wood that develops color at a higher concentration can be obtained.

The halogen arsenic used in this case does not necessarily have the characteristic of containing pure iodine silver crystals when used in halogen/f arsenic, but is known in the art. All silver halogens can be used.

Examples of such organic silver salt oxidizing agents include the following.

It is a silver salt of an organic compound having a carboxyl group, and representative examples include silver salts of aliphatic carboxylic acids and silver salts of aromatic carboxylic acids.

Examples of aliphatic carboxylic acids include silver salts of behenic acid, silver salts of stearic acid, silver salts of oleic acid, silver salts of lauric acid, silver salts of capric acid, silver salts of myristic acid, and silver salts of myristic acid. Silver salts, silver salts of maleic acid, silver salts of fumaric acid, silver salts of tartaric acid, silver salts of furoic acid, silver salts of linoleic acid, silver salts of oleic acid, silver salts of adipinoic acid, silver salts of segudinoic acid. Examples include silver salts, silver salts of succinic acid, silver salts of acetic acid, silver salts of butyric acid, and silver salts of camphoric acid. In addition, silver salts substituted with ), rogen atoms or hydroxyl groups are also effective.

Silver salts of aromatic carbonic acids and other carboxylic group-containing compounds include silver salts of benzoic acid, silver salts of 3゜j-dihydroxy7benzoic acid, silver salts of O-methylbenzoic acid,
Substituted benzoic acids such as silver salt of m-methylbenzoic acid, silver salt of p-methylbenzoic acid, silver salt of λ,≠-diclonodobenzoic acid, silver salt of acetamidobenzoic acid, silver salt of p-phenyl-benzoic acid, etc. Silver salt of gallic acid, silver salt of tannic acid, silver salt of phthalic acid, silver salt of terephthalic acid, silver salt of salicylic acid, silver salt of phenylacetic acid, silver salt of pyromellitic acid, US special r. Silver salts such as 3-alkyl alcohol/methyl≠-methyl-hiro-thiazolino-no-thiono described in U.S. Patent No. 3.7gj, No. 130, and described in U.S. Pat. Examples include silver salts of aliphatic carboxylic acids/acids having thioether groups.

In addition, there are compounds having a mercapto group or a thione group, and silver salts of derivatives thereof.

For example, 3-mercapto-f x = Roux/, 2.

v - Silver salt of 1-lyazole, silver salt of λ-mercaptobenozimiguzole, silver salt of λ-mercapdoteraminodeadiazole, silver salt of 2-mercaptobenzthiazole 1.2-(s -ethyl glycolamide) silver salt of benzthiazole, S-alkyl (number of carbon atoms/, z ~, 2.2
alkyl group) thioglycol acetic acid etc.
Silver salts of thioglycolic acid, silver salts of dithiocarboxylic acids such as silver salts of dithioacetic acid, silver salts of thioamides, tercarboquine-/-methyl-2-phenyl-hiro-thiopyridine, as described in No. 27, No. silver salt of mercaptotriazine, silver salt of λ-mercapto(nzoxazole,
Silver salt of mercaptooxadiazole, US Pat.

123,. 27'l-Silver salts as described in the measurement description, for example /
.

, 3-amine which is a 24 μm mercaptotriazole derivative ~! -benzylthio/. 2. Silver salt of 4'-triazole, 3 described in U.S. Pat. No. 3.301.1.7g
It is a silver salt of a thione compound such as a silver salt of -(2carboxynoethyl)-≠-methyl-t-thiazolinonotion.

In addition, there are silver salts of compounds having imino groups. For example, Tokusho≠tl--30,270, tl/-j-/ and≠
/Silver salts of 7-chlorotriazole and its derivatives described in Publication No. 2, such as silver salts of pencitrianol, silver salts of alkyl-substituted benztriazoles such as silver salts of methylbenztriazole, and silver salts of j-chloropetztriazole silver salts of halogen-substituted benzotriazoles such as salts, silver salts of carbimidobenzotriazoles such as silver salts of butylcarboimidobenzotriazoles, U.S. Pat.
, 220°70! / as stated in the P specification, 2. Examples include silver salts of ≠-triazole and /-I-(-tetrazole, silver salts of carbazole, silver salts of saccharin, and silver salts of imidazole and imidazole derivatives).

Also, Research Disclosure Vo1/7゜/ri7g
Organometallic salts such as silver salts and copper stearate described in 2000 Month A/70.27 are also organometallic salt oxidizing agents that can be used in the present invention.

Two or more kinds of organic silver salt oxidizing agents can be used.

Although the thermal development process during heating of the present invention is not fully clarified, it can be considered as follows.

When a photosensitive material is irradiated with light, a latent image is formed on the photosensitive silver halide. Regarding this, T.

“The Theory of
tbePhotographic Processes
s” 3rd Edition 10th evening page~/l1g
It is written on the page.

For information on how to prepare these silver halides and organic silver salt oxidizing agents and how to mix both, please refer to Research Disclosure No. 7022, JP-A Shoj O-3 Kota 2g, JP-A Shoj/
-≠2j, 2ri, U.S. Patent No. 3゜700, Hirors' No., JP-A No. 3.22≠, JP-A No. 30-/7.2/4
listed in the number.

According to the present invention, the coating amount of photosensitive silver halide and organic silver salt oxidizing agent is j, 0m9~/ in total in terms of silver.
Of /772 is suitable.

The photosensitive silver halide, organic silver salt oxidizing agent of the present invention is prepared in the following binder. A dye-providing substance is also dispersed in the binder described below.

The binders used in the present invention can be contained alone or in combination. This binder has
Hydrophilic materials can be used. Hydrophilic binders are typically transparent or translucent hydrophilic colloids, such as proteins such as gelatin, gelatin derivatives, cellulose derivatives, natural substances such as starch, polysaccharides such as gum arabic, and polyvinylpyrrolidone. , synthetic polymeric materials such as water-soluble polyvinyl compounds such as acrylamide polymers. Other synthetic polymeric compounds include dispersed vinyl compounds, which increase the dimensional stability of photographic materials, especially in the form of latexes.

The silver halide used in the present invention may be spectrally sensitized with methine borons and others. The dyes used include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, holopolar cyanine dyes, hemicyanine dyes, styryl dyes and hemioxonol dyes. Particularly useful dyes are those belonging to the cyanine dyes, merocyanine dyes, and complex merocyanine dyes. Any of the nuclei commonly used for cyanine dyes can be used as the basic heterocyclic nucleus for these dyes. That is, pyrroline nucleus, oxazoline nucleus, thiazoline nucleus, virol nucleus, oxazole nucleus, thiazole nucleus, selenazole nucleus, imidazole nucleus, tetrazole nucleus, pyridine nucleus, etc.; a nucleus in which an alicyclic hydrocarbon ring is fused to these nuclei; and these A nucleus in which an aromatic hydrocarbon ring is fused to the nucleus of Imidazole nuclei, quinoline nuclei, etc. can be applied.

These nuclei may be substituted on carbon atoms.For merocyanine dyes or complex merocyanine dyes, nuclei having a ketomethylene structure include pyrazolin-5-one nucleus, thiohydantoin nucleus, and 2-thioxazolidine-2,4-
A 5- to 6-membered heterocyclic nucleus such as a dione nucleus, a thiazolidine-2,4-dione nucleus, a rhodanine nucleus, and a thiobarbic acid nucleus can be used.

Useful sensitizing dyes include, for example, German Patent No. 929.0
No. 80, U.S. Patent No. 2,231,658, U.S. Patent No. 2,493
, No. 748, No. 2.503.776, No. 2,519,
No. 001, No. 2,912゜329, No. 3,656,9
No. 59, No. 3,672.897, No. 3,694,21
No. 7, No. 4゜025.349, No. 4,046,572
No., British Patent No. 1,242.5'88, Special Publication No. 1977-1
Examples include those described in No. 4030 and No. 52-24844.

These sensitizing dyes may be used alone or in combination, and combinations of sensitizing dyes are often used particularly for the purpose of supersensitization.

A typical example is US Patent 2. ．． No. 688,545, 2.
No. 977.229, No. 3,397,060, No. 3,5
No. 22,052, No. 3.527.641, No. 3,61
No. 7,293, 3. No. 628゜964, 3,66
No. 6.480, No. 3,672, No. s98, No. 3,679
, No. 428, No. 3703.377, No. 3,769,
No. 301, No. 3.814,609, No. 3,837.8
No. 62, No. 4,026,707, British Patent No. 1,344
．． No. 281, No. 1,507,803, Special Publication No. 43-4
No. 936, No. 53-12,375, JP-A No. 52-11
No. 0,618 and No. 52-109.925.

Along with the sensitizing dye, it is a dye that itself does not have a spectral sensitizing effect or a substance that does not substantially absorb visible light,
A substance exhibiting supersensitization may also be included in the emulsion. for example,
Aminostyl compounds substituted with nitrogen-containing heterocyclic groups (for example, U.S. Pat. No. 2,933.390, U.S. Pat. No. 3,635.7)
21), aromatic organic acid formaldehyde condensates (such as those described in US Pat. No. 3,743,510), cadmium salts, azaindene compounds, and the like. U.S. Patent No. 3,615,61.3;
No. 615,641, 3. 617. No. 295, same 3
, 635,721 are particularly useful.

The support used in the present invention is one that can withstand the processing temperatures. Common supports include glass,
Not only paper, metal and their analogs are used;
Included are cellulose acetate film, cellulose ester film, polyvinyl acecool film, polystyrene film, polycarbonate film, polyethylene terecrate film, and films or resin materials related thereto. The polyesters described in US Pat. No. 3,634,089 and US Pat. No. 3,725.070 are preferably used.

Various dye release aids can be used in the present invention. A dye release aid is a photosensitive agent that promotes the arsenic reduction reaction between the arsenic agent and the dye-donating substance, or the acid (arsenic acid) in the subsequent dye release reaction. A base or a base precursor is used as a substance that can act nucleophilically on the dye-donating substance and promote the release of the dye.

In the present invention, it is particularly advantageous to use these dye release aids to accelerate the reaction.

Examples of preferred bases include amines, including trialkylamides, hydroxylamines, aliphatic polyamines, N-alkyl W. Substituted aromatic amines, N-hydroxyalkyl substituted aromatic amines and bisCp=(, dialkylamino) are also disclosed in U.S. Pat. Bukun dihydrochloride is the subject of U.S. Patent No. 3.

so ot, lI-Il. No. 4+- describes organic compounds containing amino acids such as urea and O-aminocaproic acid, which are useful. The base precursor releases a basic component when heated. Examples of typical base precursors are described in British patent no. Preferred base precursors are salts of carboxylic acids and organic bases, useful carboxylic acids include trichloroacetic acid, trifluoroacetic acid, useful bases include guanidine, bilysine, morpholinyl,
Examples include p-toluidi/, 2-picoline, and the like. U.S. Patent No. 3.

Guanidi/trichloroacetic acid described in No. 210, fφ6 is particularly useful. Further, it is preferably used as a compound which decomposes at the aldoneamide temperature to produce a base, as described in Japanese Patent Application Laid-Open No. 0-2λOtsu-2j.

These dye release aids can be used in a wide variety of ways. The useful range is less than the SO type weight mecent of the coated film of the photosensitive dye, more preferably Q.
07 Weight Nomie Centa S et al. in the range ≠ 0 weight percent.

In the heat-developable color light-sensitive material of the present invention, it is advantageous to use a compound represented by the following general formula because development is accelerated and dye release is also promoted.

[General formula]

In the above formula, A1. A2. A3. A4 may be the same or different, and each represents a hydrogen atom, an alkyl group, a substituted alkyl group, a /chloroalkyl group, an aralkyl group, an aryl group, a substituted aryl group, and a substituent selected from a heterocyclic residue. Expressed and shuffled A1 and A2 or A3 and A
4 may be connected to form a term.

As a specific example, [1□N502NH2゜H2N502
N(CH3)2. H2N502N(c2H5)2゜H2
N502NI4CH3, H2N502N(c2H4oH
)2°CH3NH302NHCH3.

The above compounds can be used within a wide range.

A useful range is 20% by weight or less of the coated soft film of the light-sensitive material, more preferably 0.5% by weight. /from/J type weight? - Cents.

In the present invention, it is advantageous to use a water-releasing compound to accelerate the dye-releasing reaction.

A water-releasing compound is a compound that decomposes and releases water during thermal development. These compounds are particularly known for transfer printing of textiles, and are patented in Japan! ;0-4#31 as NH4Fe(SO4)2-/, 2H2 described in the publication No.
0fz etc. are useful.

Further, in the present invention, it is possible to use a compound that measures the stability of the image at the same time as the development activity (r).

Among them, inothiuroniums represented by 2-hydroquinethylinthiuronium trichloroacetate described in U.S. Patent No. 3,307,67g, U.S. Patent No. 3,6
Bisinothiuroniums such as 71g-(3, O-dioxaoctane)bis (intiuronium trifluoroacetate) described in No. 670, West German Patent No. 2,
/42, '7/≠Thiol-1 compounds disclosed in US patent≠, O/2. ．． 2-amino thiazolium trichloroacetate described in No. 2tO, thiazolium compounds such as λ-amino-j-furomoethyl-cortiazolium trichloroacetate, bis described in U.S. Patent No. ≠, oto, ≠20 (i-amino-
2-thiazolium) methylene bis(sulfonylacetate), 2-amine-2-thiazolium phenylsulfonylacetate, and other compounds having an acidic moiety α-sulfonylacetate, US Pat.
gr, 11. Preferably, compounds having λ-carboxycarboxamide as the acid moiety described in the above-mentioned No. 7 are used.

In the present invention, a hot solvent can be contained.

The term "thermal solvent" herein refers to a non-hydrolyzable organic material that is solid at ambient temperatures but exhibits a mixed melting point with other components at or below the heat treatment temperature used. . Examples of useful thermal solvents include developer solvents, compound compounds, and compounds with high dielectric constants that are known to promote the physical development of silver salts.Useful. Examples of thermal solvents include polyglycols described in U.S. Patent No. 3,3≠7.
000 polyethylene glycol, derivatives such as oleic acid esters of polyethylene oxide, beeswax, monostearin, [arsenic compounds with a high dielectric constant having -5O2-1-C〇- groups, such as acetamide, saran/imide, ethyl carbamate. , urea, methylsulfonamide, ethylene carbonate, U.S. Patent No. 3. Otsuz7. Polar substances described in the Tatata issue, lactone of hydroxobutanoic acid, methylsulfinylmethane, tetrahydrothiophene = /, l-dioxide, 7, described in Research Disclosure magazine / 7/2017, issue 2z-λ♂,
10-Decanediol, methyl anisate, biphenyl perate and the like are preferably used.

In the case of the present invention, the dye-donating substance is colored, and further,
Although it is not so necessary to incorporate anti-irradiation substances or dyes into photosensitive materials, to further improve the sharpness,
No. 3°, 2j3. ri, issue 2/, same λ,
Ta, 27. Tag No. 3, same 2, Ri! 1. Filter dyes and absorbent substances described in various specifications such as No. 177 can be included. Preferably, these dyes are thermally decolorizable, such as those described in US Pat. Preference is given to dyes such as those described in No. z/Yu, ≠32.

The photosensitive material used in the present invention may optionally contain various additives known as heat-developable photosensitive materials and layers below the photosensitive layer, such as an antistatic layer, a conductive layer, a protective layer, an intermediate layer, an AH layer, and a peel-off layer. It can contain layers and the like.

The floating true emulsion layer or other hydrophilic colloid layer of the light-sensitive material of the present invention contains coating aids, antistatic properties, smoothness improvement, emulsification dispersion, adhesion prevention, and photographic property improvement (for example, development acceleration, high contrast, sensitization). Various surfactants may be included for various purposes such as.

For example, saponins (steroids), alkylene oxide derivatives (e.g. polyethylene glycol, polyethylene glycol/polypropylene glycol condensates, polyethylene glycol alkyl ethers or polyethylene glycol alkyl aryl ethers, polyethylene glycol/fuglycol esters, esters, polyalkylene glycol alkylamides/or amides, polyethylene oxide adducts of glycone), glycidol derivatives (e.g. alkenyl co-phosphate polyglycerides, alkylphenol polyglycerides), fatty U5 acid esters of polyhydric alcohols, Nonionic surfactants such as alkyl esters of sugars; alkyl carboxylates, alkyl sulfonates, alkylbenzenesulfonoic acids L, alkylnaphthalene sulfonates, alkyl sulfates, alkyl phosphates, N-acyl- N-alkyltaurines, sulfosuccinates, sulfoalkyl polyoxyethylene alkylphenyl ethers, polyoxyethylene alkyl phosphates, etc. Anionic surfactants containing acidic groups such as amino acids, aminoalkyl sulfonic acids, aminoalkyl sulfates or phosphoric acid esters, alkyl betaines, amine oxides, etc.; amphoteric surfactants such as alkyl amine salts, aliphatic Or the complex term ψ such as aromatic chlorinated a/monium salts, pyridinium, imidazolium, etc.
Cationic surfactants such as ammonium salts, and phosphonium or sulfonium salts containing aliphatic or heterocycles can be used.

Among the above-mentioned surfactants, it is preferable to include a polyethylene glycol type nonionic surfactant having an ethylene oxide repeating unit in the molecule in the photosensitive material. Particularly preferred are those having 5 or more repeating units of ethylene oxide.

Nonionic surfactants that meet the above conditions are widely used outside the field, and their structures, properties, and synthesis methods are well known. Representative known documents include 5urf
actant 5c1ence Seriesvo
lume i, Non1onic 5urfact
ants(Edited by Marjin J
,5chick.

Marcel Dekker Inc, /ri67)
, 5urface AcLive Ethyle'n
e QxideAdducLs(SchoufeldL
, N. Pergamonpress/Ref. 6), and the nonionic surfactants described in these literatures that satisfy the above conditions are preferably used in the present invention.

These nonionic surfactants may be used alone or as a mixture of two or more.

The polyethylene glycol type nonionic surfactant is used in an amount equal to or less than the weight of the hydrophilic binder, preferably 50% or less.

The light-sensitive material of the present invention may contain a cationic compound having a pyridinium salt. As a fl of a cationic compound having a bi-1nodinium group, PSA Jou
rnal, 3ecLion B31r (/Wata3)
,USF-2,Otsul/,♂,6o≠,USP-? , 47
1.2≠7, Tokko Sho t/-≠-3007≠, Tokko Akihiro-Yu 303, etc.

The photographic light-sensitive material and dye-fixing material of the present invention may contain an inorganic or organic hardener in the photographic emulsion layer or other binder layer. For example, chromium salts (chromium alum, chromium acetate, etc.), aldehydes (formaldehyde, glyoxal, glucuraldehyde, etc.), N-methylol compounds (dimethylol urea, methylol dimethylhydantoin, etc.), dioxane derivatives (2,3-dihydroxydioxane, etc.) etc.), activated vinyl compounds (1,
3,5-) acryloyl-hexahydro-S-to1
7, 7, 1,3-hinylsulfonyl-2-propatol, etc.), active halogen compounds (2,4-dichloro-
6-hydro-roxy s-triazine, etc.), mucohalogen acids (mucochloric acid, mucophenoxychloric acid, etc.)
, etc. can be used alone or in combination.

Various additives include “Re5earch1)isclo”
Sure” Vol / 70. June / 7g
Additives such as plasticizers, sharpness-improving dyes, AH dyes, sensitizing dyes, matting agents, fluorescent whitening agents, anti-fading agents, and the like are disclosed in No. 77022 of 2010.

In the present invention, as well as the heat-developable photosensitive layer, coating solutions for the protective layer, intermediate layer, undercoat layer, backing layer, and other layers are prepared for each layer using the dipping method, air knife method, curtain coating method, or U.S. A light-sensitive material can be prepared by sequentially coating onto a support by various coating methods such as the hopper coating method described in Patent No. 3,6g/, 2≠Interosseous Apparatus and drying.

Further, if necessary, U.S. Pat. No. 2,7&/, 77/ and British Patent No. It is also possible to apply two or more layers simultaneously by the method described in No. 5.

Various exposure means can be used in the present invention. The latent image is obtained by imagewise exposure to radiation, including visible light. In general, light sources used for normal color printing include halogen lamps such as evening/gusteno lamps, mercury lamps, and iodine lamps, xenon lamps, laser light sources,
Also, CR, T light sources, fluorescent tubes, light emitting diodes, etc. can be used as light sources.

The original drawing may be a line image such as a technical drawing, or a photographic image with gradation. It is also possible to photograph portraits of people and landscapes using a camera. The printing from the original drawing may be done by overlaying the original drawing by contact printing, reflection printing, or enlargement printing.

In addition, images taken with video cameras and image information sent from television stations can be directly transmitted to CR, T and F'OT.
It is also possible to print the image on a heat-developable material using a contact printer/'7: and then print it.

Furthermore, LEDs (light emitting diodes), which have recently seen great progress, are being used as exposure means or display means in various devices. It is difficult to make an LED that effectively produces backlight. In this case, to reproduce a color image, three types of LEDs are used that emit green, red, and infrared light, and the parts of the sensitive material that are exposed to these lights emit yellow, magenta, and cyan dyes, respectively. Just design it.

That is, the green-sensitive part (layer) contains a yellow dye-donating substance, the red-sensitive part (layer) contains a maze/red dye-donating substance,
The infrared-sensitive portion (layer) may contain a cyan dye-donating substance. Other combinations are also possible as required.

In addition to the above-mentioned method of directly attaching or projecting the original image, so-called image processing involves reading the original image illuminated by a light source using a light-receiving element such as a phototube or CCD, storing it in the memory of a computer, etc., and processing this information as necessary. There is also a method of regenerating this image information = 50R, T and using it as an image-like light source, or directly emitting light from three types of LEDs for exposure based on the processed information.

In the present invention, after exposure of the photosensitive material, the resulting latent image is heated to a moderately elevated temperature, e.g. It can be developed by doing this. As long as the temperature falls within the above range, both high and low temperatures can be used by increasing or shortening the heating time. Especially about /10
Temperature ranges from °C to about /lo 0C are useful.

The heating means may be a simple hot plate, a hot roller, a heating element using carbon or titanium white, or the like.

In the present invention, a specific method for forming a color image by heat development is to move a hydrophilic mobile dye. For this purpose, the light-sensitive material of the present invention has a light-sensitive layer (i and , (I) A dye fixing layer (n
).

The above-mentioned photosensitive layer (I) and dye fixing layer (n) may be formed on the same support, or may be formed on separate supports. Dye fixing layer (II) and photosensitive layer CI
) can also be torn off. For example, after imagewise exposure, uniform heat development can be carried out, and then the dye fixing layer (If) or the photosensitive layer can be peeled off. Furthermore, when a photosensitive material having a photosensitive layer (1) coated on a support and a fixing material having a fixing layer (n) coated on a support are formed separately, the photosensitive material can be imagewise exposed. After uniform heating, the fixing material can be layered to transfer the mobile dye to the fixing layer (n).

There is also a method in which only the photosensitive material CI) is imagewise exposed, and then the dye fixing layer (■) is superimposed and uniformly heated.

The dye fixing layer (It) can contain, for example, a dye mordant for dye fixation. Various mordants can be used as the mordant, and polymer mordants are particularly useful. In addition to mordants, bases, base precursors, etc.
and a hot solvent. In particular, when the photosensitive layer (1) and the dye fixing layer (II) are formed on different supports, it is particularly useful to include a base or a base precursor in the fixing layer (It).

The polymer mordant used in the present invention is a polymer containing secondary and tertiary amine groups, a polymer having a nitrogen-containing heterocyclic moiety, a polymer containing these quaternary cation groups, etc., and has a certain molecular weight! ;,000,20o,ooo especially 10.0
0'0-40,'000(7).

For example, in the US patent λ, j4L,! 6≠ issue, same λ.

Hirozahiro, No. 1730, 3. /III, 07. / issue, 3.7! A, vinyl pyridine polymers and vinyl pyridinium cationic polymers disclosed in US Pat. T2 evening, Otorihiro, same 3. I
jri, 0ri wo issue, dohiro, i, zr.

A polymer mordant capable of crosslinking with gelatin, etc., disclosed in the specification of No. 3g, British Patent/, 277, ≠33, etc.;
US Patent 3. Ri6! , Tatata, same λ, 7.2/, Ij
, No. 2, Same λ, 77♂, No. 063, Akihiro Togai-//r
No. 221, same! Hiro-／≠Yo-Yu 22 No. 1, Do-Yu 311-/2
Aqueous sol type mordant disclosed in US Pat. No. 7,027, etc.; US Pat. No. 3. Water-insoluble mordants disclosed in ZARI♂ and OZAR description devices: Dyes disclosed in the specifications of U.S. Patent A, its', RI 7 (Japanese Unexamined Patent Publication No. 373.33) a reactive mordant capable of covalently bonding with;
Further, U.S. Pat. No. 3.709, t? No. 0, 3.711
, f'-55, 3,6≠2,1112, 3. μ
gg.

No. 70, 3. Ta37. Ott No. 3, 27i, i
ti'y issue, same 3. λ7/, /Hirog issue, JP-A-ShojO-7
/332, same number 3-303XI, same jλ-/j 5
．． Examples include mordants disclosed in No. 2g, No. J3-/23r, and No. 5J-10211.

Other US patents λ, t7r, 3/'<, λ.

lIr2. /! ;1, mordants described in the specification may also be mentioned.

Among these mordants, for example, those that crosslink with the matrix such as gelatin, water-insoluble mordants, and aqueous sol (or latex dispersion) type mordants can be preferably used.

Particularly preferred polymer mordants are shown below.

(1) 4'[A group having an ammonium group and capable of covalently bonding to gelatin (e.g., an aldehyde group, a chloroalkanoyl group, a chloroalkyl group, a vinylsulfonyl group,
(2) Repeated exposure of a monomer represented by the following general formula and repeated exposure of other ethylenically unsaturated monomers. and a crosslinking agent (e.g. hahisalkanesulfonate, bisarenesulfonate).

aryl group, or b At least R3-R5 λ are combined to form a hetero It may form a ring.

X: anion (the above alkyl groups and aryl groups include substituted ones) (3) Polymer X represented by the following general formula: about 0.23
~about! Molch y: about O to about O Molar coefficient 2: about lθ to about Tatamolar coefficient A: Monomer having at least two ethylenically unsaturated bonds B: Copolymerizable ethylenically unsaturated monomer Q: N, P bb R1 , RJ2, R3: an alkyl group, a cyclic hydrocarbon group, or at least two of Rb-Rb may be combined to form a ring. (These groups and rings may be substituted.) (4) Copolymer X consisting of (a), Φ) and (C): hydrogen atom, alkyl group, or hydrogen atom (alkyl group may be substituted) ) (b) Acrylic acid ester (C) Acrylonitrile (5) A water-insoluble polymer Rb1, Rb2, 几, each having 3 or more repeating units represented by the following general formula: Each represents an alkyl group. b
, b, and the total number of carbon atoms of R1 to FL3 is 72 or more.

(The alkyl group may be substituted.) X: Anion As the gelatin used in the mordant layer, various known gelatins may be used. For example, gelatin with different manufacturing methods such as lime-treated gelatin and acid-treated gelatin, or
It is also possible to use gelatin obtained by chemically modifying the obtained gelatin such as phthalation or sulfonylation. Moreover, if necessary, it can be used after being subjected to desalting treatment.

The mixing ratio of the polymer mordant and gelatin of the present invention and the coating amount of the polymer mordant can be easily determined by those skilled in the art depending on the amount of dye to be mordanted, the type and composition of the polymer mordant, and the image forming process to be used. You can, but
It is preferable to use the mordant/gelatin ratio at 20/Zo-go72o (weight ratio) and the mordant application amount at 0.15~gg/m.

The dye fixing layer (II) may have a white reflective layer. For example, a layer of titanium dioxide dispersed in gelatin can be provided over a mordant layer on a transparent support. The titanium dioxide layer forms a white opaque layer, and by viewing the transferred color image from the transparent support side, a reflective color image can be obtained.

A typical fixative material used in the present invention is obtained by mixing a polymer containing an ammonium salt with gelatin and coating it on a transparent support.

For dye transfer from the photosensitive layer to the dye fixed layer.

Dye transfer aids can be used.

In a system in which the transfer aid is externally supplied, water or a basic aqueous solution containing caustic soda, caustic potash, or an inorganic alkali metal salt is used as the dye transfer aid. Also, low boiling point solvents such as methanol, N,N-dimethylbormamide, acetone, diisobutyl ketone, or mixtures of these low boiling point solvents with water or a basic aqueous solution/8? ei,
is used. The dye transfer aid may be used by moistening the image-receiving layer with the transfer aid.If the transfer aid is incorporated into the light-sensitive material or dye fixing material, there is no need to supply the transfer aid from the outside. The above transfer aid may be incorporated into the material in the form of crystal water or microcapsules, or may be incorporated as a precursor that releases the solvent at high temperatures. More preferably, a hydrophilic thermal solvent that is solid at room temperature and melts at high temperature is incorporated into the light-sensitive material or dye-fixing material. The hydrophilic thermal solvent may be incorporated into either of the two dye-fixing materials of the light-sensitive material, or may be incorporated into both. Further, the layer to be incorporated may be either an emulsion layer, an intermediate layer, 5 protective layers, 1 dye fixing layer, but examples of hydrophilic heat solvents preferably incorporated in 1 dye fixing layer and/or its adjacent layer include:
These include ureas, pyridines, amino acids, sulfonamides, imides, alcohols, oximes, and other heterocycles.

Example 1 This article describes how to make a silver iodobromide emulsion.

Dissolve 40g of Seratin and 26'g of KBr in 3000ml of water. This solution is kept at 50°C and stirred. Next, a solution prepared by dissolving 34 g of silver nitrate in 200 ml of water is added to the above solution over a period of 10 minutes.

Thereafter, a solution in which 3.3 g of Kl was dissolved in 100 ml was added over 2 minutes.

The pH of the silver iodobromide emulsion thus prepared is adjusted, and the emulsion is allowed to settle to remove excess salt.

Thereafter, the pH was adjusted to 6.0, yielding 400 g of a silver iodobromide emulsion.

Next, we will discuss how to make a benzotriazole silver emulsion.

28g of gelatin and 13.2g of benzotriazole to 33g of water
Dissolve in 000 ml. 1 g of this liquid was stirred at 40°C for one moment. A solution of 17 g of silver nitrate dissolved in 100 ml of water is added to this solution over 2 minutes.

The pH of this benzotriazole silver emulsion is adjusted and the excess salt is removed by precipitation. Thereafter, the pH was adjusted to 6° and a yield of 400 g of benzotriazole was obtained.

Next, we will describe how to make a gelatin dispersion of a dye-donating substance.

5g of magenta dye-donating substance (42), succinic acid-2
-Ethyl-hexyl ester sulfonic acid soda 0.5g
Weigh out 5 g of TCP (TCP), add 30 ml of ethyl acetate, and melt by heating to about 60°C to form a homogeneous solution. 10. After stirring and mixing this solution and 100 g of a 10% solution of lime-treated gelatin, the mixture was mixed with a homogenizer for 10 minutes. Disperse at 00 ORPM.

This dispersion will be referred to as a dispersion of a dye-donating substance (42).Next, how to make photosensitive materials A and B will be described.

Photosensitive material A (a) 25 g of the above silver iodobromide emulsion (b)
Dispersion of dye-donating substance (42) 33g (C) 5% aqueous solution of compound AA 5ml (d) 10% ethanol solution of guanidine trichloroacetic acid
12m1 (e) 10% aqueous solution of the following compound 4m182 N-302-N (CH3)2 After mixing and melting the above (a) to (e), coat it on a polyethylene terephthalate film with a wet film thickness of 30 μm. Dry. Furthermore, the following four types were added as a protective layer on top of this: (f) 35 g of 10% gelatin in water (g) 10% ethanol solution of guanidine trichloroacetic acid
A mixture of 6 ml (h) succinic acid-2-ethyl-hexyl ester sulfone ml (+) water 55 ml was applied to a wet film thickness of 25 μm, and then dried to prepare photosensitive material A.

Photosensitive material B was prepared as follows.

(a) Silver hensitriazole emulsion 10 g (b) Silver iodobromide emulsion 20 g (C) Dispersion of dye-providing substance (7) 33 g (d) 5% aqueous solution of compound AA
5ml (e) 10% of guanidine trichloroacetic acid
Ethanol solution 12.5 ml (f) 10% of 1-phenyl-4,4-dimethyl-3-pyrapridone
After mixing and melting 10 ml of methanol q'Il, it was applied onto a polyethylene terephthalate film to a wet film thickness of 30 m, and then dried. The protective layer was applied in the same manner as Coating A.

Next, we will discuss how to make the dye fixing material.

Poly (methyl acrylate-N,N,N-trimethyl-N-vinylhensyl ammonium chloride) (
The ratio of methyl acrylate to vinylbenzylammonium chloride was 1:1) 10 g was dissolved in 200 ml of water and uniformly mixed with 100'g of 10% lime-treated gelatin. This mixed solution was uniformly applied to a wet film thickness of 90 μm on polyethylene terephthalate in which titanium dioxide was dispersed.

After mixing and dissolving the following (k) to (0) on this film. It was applied uniformly to a wet film thickness of 60 μm and dried. Hereinafter, this second layer will be referred to as a hydrophilic thermal solvent layer.

(j) Urea (hydrophilic thermal agent) 2g (h) N
-Methylurea 2g (I) water
8ml (m) 10 of polyvinyl alcohol (saponification degree 98%)
Weight % aqueous solution 12 g (n) 5% aqueous solution of compound AA 2 ml (0) 5% aqueous solution of sodium dodecylbenzenesulfonate 0.5 ml After drying this sample. Used as a dye fixing material.

The above photosensitive coatings A and B were imagewise exposed for 10 seconds at 2000 lux using a tungsten bulb. Thereafter, it was heated uniformly for 20 seconds on a heat block heated to 140°C.

Compound BB Structural Formula %Formula %Formula %Next, the above-mentioned heated light-sensitive material and the dye-fixing material were stacked so that the film surfaces faced each other. This stacked sample was passed between a pair of 130°C heated rollers,
After heating for 40 seconds while applying pressure.

When the dye-fixing material was peeled off from the light-sensitive material, a magenta color image which was positive compared to the silver image was obtained on the dye-fixing material. The density of this negative image with respect to green light is determined by the Macbeth reflection density needle (R
The results measured using D519) are shown in the table below.

7 7
7', 7 N of E1 experiment
Pressure applied to ot sample 1 maximum 1 minimum 11 (photosensitive material l (kg/ant), 1 concentration I concentration 11
Fee A) l Ill To----+----------10---+----+1
1 1' 0 11.85 10.3
4 11----- 10------10--11210,0111,9B +0.34
1 to - - + - - one, - - - - - + - - - ten - - -
-+1 3 1 1 12.18 10.
36 1F-----10-------10--+--
-+1 4, 1 10' 12.2
2 1'0.361 toe------+------
−−10−−−−+ −−−−−(+ 5 1 5
0 12.22 10.36 +too
−10−−−−−−m−−−10−−−+ −−−−−(1
61200l-1-I L-11111111111---Eng---''1.
In case of No. 2, the color image becomes uneven and one pigment does not move sufficiently, resulting in low density in both eyes. - In the case of 10,000 yen, a dye image with reproducibility could not be obtained because the separation between the light-sensitive material and the fixing material was insufficient.

In Examples 3 to 5 of the present invention, dye images with no unevenness and high maximum density and high reproducibility were obtained.

r7',
Pressure applied to N01 sample in T-m-7”11 experiment 1, maximum 1 minimum 11 (photosensitive material 1 (kg/CJd)
l concentration 1 concentration 11 material B) I Il
+ F=−−10−−−−−−−−−+7−−− 10−−
−1111011,8810,321 1−−−−−−−1−−−−−−−−−−−−+ −−
−+ −−−1121512,2410,341 F−1−−+−−−−−−−+−−−10−−−+1 3
1 10 12.26 10.36 1
It can be seen that a similar tendency is observed in the system in which an organic silver salt is present.

Example 2 In place of the dye-providing substance (42) in Example 1, 5 g of each of the dye-providing substances (10), (68), and (21), and 7.
Photosensitive materials C, D, and E were prepared in exactly the same manner as photosensitive material A of Example 1, except that 5g and 5g were used, and the same treatments as in Example 1 were performed to obtain the results shown in the table below. However, the applied pressure is OK g/Cn! , 10 kg/dl.

r-1-7--- 7-
T ” Pressure applied to 1 sample of 11 samples 1
Maximum 1 Maximum 11 Name 1 (kg/cot)
l concentration 1 concentration 11 1, l
l lto-11-10---11--1-
---10--111011, 8010, 381 1C Touuuuuu-+-” −-+-1-++
+1o +2.2310.40
1) −−−−−−−+ −−−−−−−−−−10−−
---10-----(+10 11.5
5 10.34 11 D Touuuuuuuuu~
---10-----+1 1 10 12.
01 io, 36 1F=−−−+−−−−−−−−
+-10----t1 1 0 11.
85 10.40 +1 E To------
−−−+ −−−+−−−+1 i 10
12.28 10.44 1L--11th Engineering--
From the above, it is clear that the method of the present invention exhibits a remarkable effect in increasing the maximum concentration.

After exposing the photosensitive material A used in Example 1 in the same manner as in Example 1, a sample in which this and the dye fixing material were superimposed was placed on the 130° C. heated roller used in Example 1 while applying pressure. Heat for 40 seconds. The same measurements as in Example 1 were performed on this sample. The maximum concentration and minimum concentration of the sample without applying pressure are 1.76 and 0.55, respectively, and 5 kg/cJ
The results are 2.12 and 0.58, respectively, and the effects of the present invention are obvious even when heating for development and heating for dye transfer are performed simultaneously.

Example 4 A method of preparing a gelatin dispersion of the dye-donating substance BB used in reaction (1) will be described.

Magenta dye-donating substance (BB) Log 2-ethyl-hexyl succinate sodium sulfonate 0.
5g,) leak resil phosphate (TCP) 1
Weigh out 0g, add 20ml of cyclohexquinone, and add about 60ml of cyclohexquinone.
Heat and dissolve at ℃ to make a homogeneous solution. This solution and 100 g of a 10% solution of lime-treated gelatin were stirred and mixed, and then dispersed at 10°000 PPM using a homogenizer for 10 minutes.

A photosensitive material F, in which this dispersion was called a dispersion of a dye-donating substance (BB), was prepared in the following manner.

(a) Silver hensitriazole emulsion 5 g (b) Silver iodobromide emulsion 2 g (c) 40% gelatin aqueous solution 2 g (d) Dispersion of dye-donating substance (BB) 2.5 g <e> Guanidine trichloroacetic acid 10
% ethanol solution 0.5ml(f)2
．． After mixing and melting 0.5 ml of a 10% methanol solution of 6-dichloro-4-aminephenol (g) 1 ml of a 5% aqueous solution of compound AA (h) and 4.5 ml of water, it was coated on a polyethylene terephthalate film with a wet film thickness of 85 μm. It was applied and then dried. The protective layer was applied to the coating of Example 1 in the same manner.

The same processing and operation as in Example 1 were carried out using Photosensitive Material E and the dye fixing material used in Example 1.

The results are shown in the table below.

"-'-----"i-----1-cho-1-T----ko1
Pressure applied to Nol sample in experiment 1 maximum 1 tension small 11
(Photosensitive material 1 (kg/cnl) 1 concentration 1 concentration 11 material B)
−10−−−1111011,7010,291 F−−−−−−,−−−−−−−−−−+ −−
--10---1121' 5 12. ．． 11
10.31 1 to------+ −---------
--10-----113110' +2
．． 15.10.34 1L-111 Engineering---------
From the above, it can be seen that the present invention is also effective for the mobile dye obtained by reaction (1).

Claims (1)

[Claims] on a support at least a photosensitive silver halide, a binder, and 3 compounds that are chemically involved in the reaction to form or release a mobile dye when the photosensitive silver halide is reduced to silver under high temperature conditions. After or simultaneously with imagewise exposure, a photosensitive material containing seeds is heated in a substantially water-free state to form a mobile dye in the form of an image, and this mobile dye is applied to the photosensitive material under pressure. An image forming method in which the dye is transferred and fixed to a dye fixing layer in a dye fixing material that is in close contact with the dye.