Claims
- 1. A heat developable color photogrpahic material comprising:
- a support having thereon;
- a light-sensitive mixed crystal silver haloiodide which is prepared by simultaneously reacting sources of Ag, I and at least one other halogen while maintaining a constant pAg and which does not show a pattern of pure silver iodide in an X-ray diffraction pattern having a silver iodide content of 4 to 40 mole%;
- a hydrophilic binder; and
- a dye-providing substance capable of providing a mobile dye, when the silver haloiodide is reduced to silver upon heating, in chemical relation to the reaction, selected from the group consisting of:
- a coupler capable of forming a mobile dye by a coupling reaction with the oxidation product of the reducing agent formed by the oxidation-reduction reaction with silver halide occurring by heating;
- a compound which releases a mobile dye by heating but becomes a compound not capable of releasing mobile dye by the oxidation-reduction reaction with silver halide occurring by heating;
- a dye providing substance reductive to silver halide capable of releasing a mobile dye by the oxidation reduction reaction with silver halide occurring by heating; and
- a compound represented by formula (A): ##STR29## wherein A.sub.1, A.sub.2, A.sub.3 and A.sub.4, which may be the same or different each represents a hydrogen atom or a substituent selected from an alkyl group, a substituted alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, a substituted aryl group and a heterocyclic group; and A.sub.1 and A.sub.2 or A.sub.3 and A.sub.4 may combine with each other to form a ring.
- 2. A heat developable color photographic material as claimed in claim 1, wherein the light-sensitive mixed crystal silver haloiodide has a silver iodide content of 7 to 30 mole%.
- 3. A heat developable color photographic material as claimed in claim 1, wherein the light-sensitive mixed crystal silver haloiodide is selected from a group consisting of silver iodobromide and silver chloroiodobromide.
- 4. A heat developable color photographic material as claimed in claim 1, wherein the light-sensitive mixed crystal silver haliodide is chemically sensitized.
- 5. A heat developable color photographic material as claimed in claim 1, wherein the light-sensitive mixed crystal silver haloiodide is spectrally sensitized.
- 6. A heat developable color photographic material as claimed in claim 1, wherein the color photographic material further comprises an organic silver salt oxidizing agent.
- 7. A heat-developable color photographic material as claimed in claim 6, wherein the organic silver salt oxidizing agent is a silver salt of an organic compound having a carboxy group, a silver salt of a compound containing a mercapto group or a thione group or a silver salt of a compound containing an imino group.
- 8. A heat developable color photographic material as claimed in claim 6, wherein the total of the silver haloiodide and the silver salt oxidizing agent is in the range of 50 mg/m.sup.2 to 10 g/m.sup.2 calculated based on the amount of silver.
- 9. A heat-developable color photographic material as claimed in claim 1, wherein an amount of the dye providing substance capable of providing a mobile dye is from 10 mg/m.sup.2 to 15 g/m.sup.2.
- 10. A heat-developable color photographic material as claimed in claim 1, wherein said mixed crystal silver haloiodide is prepared by simultaneously adding an aqueous solution of potassium iodide, potassium bromide, and an aqueous silver nitrate solution to an aqueous gelatin solution while maintaining a constant pAg.
- 11. A heat-developable color photographic material as claimed in claim 1, wherein the color photographic material further contains a transfer solvent.
- 12. A heat-developable color photographic material as claimed in claim 11, wherein the transfer solvent is water, an alkaline aqueous solution, an organic solvent having a low boiling point or a mixture thereof.
- 13. A heat developable color photographic material as claimed in claim 1, wherein the dye-providing substance capable of providing a mobile dye is a coupler capable of forming a mobile dye by a coupling reaction with the oxidation product of the reducing agent formed by the oxidation-reduction reaction with silver halide occurring by heating.
- 14. A heat developable color photographic material as claimed in claim 1, wherein the dye-providing substance capable of providing a mobile dye is a compound which releases a mobile dye by heating but becomes a compound of not releasing mobile dye by the oxidation-reduction reaction with silveer halide occurring by heating.
- 15. A heat developable color photographic material as claimed in claim 1, wherein the dye-providing substance capable of providing a mobile dye is a dye-providing substance reductive to silver halide capable of releasing a mobile dye by the oxidation reduction reaction with silver halide occurring by heating.
- 16. A heat developable color photographic material as claimed in claim 15, wherein the dye releasing redox compound is represented by the general formula (I):
- Ra--SO.sub.2 --D (I)
- wherein Ra is a reducing group capable of being oxidized by the silver haloiodide; and D is an image-forming dye portion containing a hydrophilic group.
- 17. A heat developable color photographic material as claimed in claim 16, wherein the reducing group Ra has an oxidation-reduction potential to a saturated calomel electrode of 1.2 V or less measuring the polarographic half wave potential using acetonitrile as a solvent and sodium perchlorate as a base electrolyte.
- 18. A heat-developable color photographic material as claimed in claim 16, wherein the dye portion represented by D in the dye releasing redox compound of Ra--SO.sub.2 --D includes an azo dye, an azomethine dye, and anthraquinone dye, a naphthoquinone dye, a styryl dye, a nitro dye, a quinoline dye, a carbonyl dye or a phthalocyanine dye.
- 19. A heat-developable color photographic material as claimed in claim 16, wherein the hydrophilic group included in the dye portion represented by D is a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, an imido group, a hydroxamic acid group, a quaternary ammonium group, a carbamoyl group, a substituted carbamoyl group, a sulfamoyl group, a substituted sulfamoyl group, a sulfamoylamino group, a substituted sulfamoylamino group, a ureido group, a substituted ureido group, an alkoxy group, a hydroxyalkoxy group or an alkoxyalkoxy group.
- 20. A heat-developable color photographic material as claimed in claim 1, wherein the color photographic material further contains a reducing agent.
- 21. A heat-developable color photographic material as claimed in claim 20, wherein the amount of the reducing agent is from 0.01 time to 20 times by mol based on the silver halide.
- 22. A heat-developable color photographic material as claimed in claim 1, wherein the color photographic material further comprises an auxiliary developing agent.
- 23. A heat-developable color photographic material as claimed in claim 22, wherein an amount of the auxiliary developing agent is 0.0005 times to 20 times by mol based on silver.
- 24. A heat-developable color photographic material as claimed in claim 1, wherein the color photographic material further contains a dye releasing activator.
- 25. A heat-developable color photographic material as claimed in claim 24, wherein the dye releasing activator is a base or a base precursor.
- 26. A heat-developable color photographic material as claimed in claim 1, wherein the color photographic material further comprises an image-receiving layer capable of receiving the hydrophilic dye.
- 27. A heat-developable color photographic material as claimed in claim 26, wherein the image-receiving layer contains a dye mordant.
- 28. A heat-developable color photographic material as claimed in claim 26, wherein the image-receiving layer contains a polymer mordant and gelatin.
- 29. A method of forming a color image, comprising the steps of:
- imagewise exposing a heat developable color photographic material, comprising:
- a support having thereon;
- a light-sensitive mixed crystal silver haloiodide which is prepared by simultaneously reacting sources of Ag, I and at least one other halogen while maintaining a constant pAg and which does not show a pattern of pure silver iodide in an X-ray diffraction pattern having a silver iodide content of 4 to 40 mole%;
- a hydrophilic binder; and
- a dye-providing substance capable of providing a mobile dye, when the silver haloiodide is reduced to silver upon heating, in chemical relation to the reaction, selected from the group consisting of:
- a coupler capable of forming a mobile dye by a coupling reaction with the oxidation proudct of the reducing agent formed by the oxidation reduction reaction with silver halide occurring by heating;
- a dye providing substance reductive to silver halide capable of releasing a mobile dye by the oxidation reduction reaction with silver halide occurring by heating; and ##STR30## wherein A.sub.1, A.sub.2, A.sub.3 and A.sub.4, which may be the same or different, each represents a hydrogen atom or a substituent selected from an alkyl group, a substituted alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, a substituted aryl group and a heterocyclic group; and A.sub.1 and A.sub.2 or A.sub.3 and A.sub.4 may combine with each other to form a ring;
- developing the imagewise exposing material by heating the material at a temperature of from 80.degree. C. to 250.degree. C. to release a hydrophilic diffusible dye; and
- transferring the hydrophilic diffusible dye into an image receiving material.
- 30. A method of forming a color image as claimed in claim 29, wherein the transferring of the hydrophilic diffusible dye is carried out in the presence of a transfer solvent.
- 31. A method of forming a color image as claimed in claim 30, wherein the transfer solvent is water, an alkaline aqueous solution, an organic solvent having a low boiling point or a mixture thereof.
- 32. A method of forming a color image, comprising the steps of:
- imagewise exposing a heat developable color photographic material, comprising:
- a support having thereon;
- a light-sensitive mixed crystal silver haliodide which is prepared by simultaneously reacting sources of Ag, I and at least one other halogen while maintaining a constant pAg and which does not show a pattern of pure silver iodide in an X-ray diffraction pattern having a silver iodide content of 4 to 40 mole%;
- a hydrophilic binder; and
- a dye-providing substance capable of providing a mobile dye, when the silver haloiodide is reduced to silver upon heating, in chemical relation to the reaction, selected from the group consisting of:
- a coupler capable of forming a mobile dye by a coupling reaction with the oxidation product of the reducing agent formed by the oxidation-reduction reaction with silver halide occurring by heating;
- a compound which releases a mobile dye by heating but becomes a compound not capable of releasing mobile dye by the oxidation-reduction reaction with silver halide occurring by heating;
- a dye providing substance reductive to silver halide capable of releasing a mobile dye by the oxidation-reduction reaction with silver halide occurring by heating; and ##STR31## wherein A.sub.1, A.sub.2, A.sub.3 and A.sub.4, which may be the same or different, each represents a hydrogen atom or a substituent selected from an alkyl group, a substituted alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, a substituted aryl group and a heterocyclic group; and A.sub.1 and A.sub.2 or A.sub.3 and A.sub.4 may combine with each other to form a ring;
- developing the imagewise exposed material by heating the material at a temperature of from 80.degree. C. to 250.degree. C. to release a hydrophilic diffusible dye; and
- transferring the hydrophilic diffusible dye into an image-receiving material.
- 33. A method of forming a color image as claimed in claim 30, wherein the image receiving material comprises a layer containing a polymer mordant and gelatin.
- 34. A method of forming a color image as claimed in claim 30, wherein the transfer solvent is present in the image receiving material.
- 35. A method of forming a color image as claimed in claim 29, wherein said mixed crystal silver haloiodide is prepared by simultaneously adding an aqueous solution of potassium iodide, potassium bromide, and an aqueous silver nitrate solution to an aqueous gelatin solution while maintaining a constant pAg.
Priority Claims (1)
Number |
Date |
Country |
Kind |
58-56878 |
Apr 1983 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 868,848 now abandoned filed 5-30-86, which is a division of application Ser. No. 595,757 filed 4-2-84 now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0076492 |
Apr 1983 |
EPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
595757 |
Apr 1984 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
868848 |
May 1986 |
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