Claims
- 1. A process for forming black and white images which comprises color developing with an aromatic primary amine a black and white photographic material comprising a support having formed thereon a silver halide photographic emulsion layer containing a black image-forming coupler represented by general formula (I) or (II): ##STR10## wherein R represents ##STR11## wherein Y.sub.1 represents an aliphatic group, an aryl group, an aralkyl group, or a heterocyclic group, said group preventing said coupler from diffusing from the emulsion layer containing it and X.sub.1 and X.sub.2 each represents a hydrogen atom or a coupling-off group capable of being released upon oxidative coupling reaction with a developing agent.
- 2. A process as claimed in claim 1, wherein R represents ##STR12## where Y.sub.1 has the same meaning as defined above.
- 3. A process as claimed in claim 1, wherein Y represents an unsubstituted alkyl group or substituted alkyl group having 1 to 22 carbon atoms, an unsubstituted or substituted alkenyl group having 2 to 22 carbon atoms, an unsubstituted or substituted aralkyl group having 7 to 22 carbon atoms, an unsubstituted or substituted aryl group having 6 to 22 carbon atoms, an unsubstituted or substituted cycloalkyl group having 5 to 22 carbon atoms or an unsubstituted or substituted heterocyclic group having 5 to 22 carbon atoms.
- 4. A process as claimed in claim 1, wherein X.sub.1 and X.sub.2 each represents a hydrogen atom, a halogen atom, an unsubstituted or substituted alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyloxy group, a sulfonyloxy group, an acylamino group, a sulfonylamino group, an alkyloxycarbonyloxy group, an aryloxycarbonyloxy group or an imido group.
- 5. A process as claimed in claim 1, wherein R is attached to the 2-position of the resorcinol nucleus.
- 6. A process as claimed in claim 1, wherein silver is present in an amount of about 0.1 g/m.sup.2 to 6 g/m.sup.2.
- 7. A process as claimed in claim 2, wherein silver is present in an amount of about 0.2 g/m.sup.2 to 4 g/m.sup.2.
- 8. A process as claimed in any of claims 1, 2, or 3, wherein the coupler is present in an amount of about 2.times.10.sup.-3 mole to 5.times.10.sup.-1 mole per mole of silver.
- 9. A process as claimed in claim 8, wherein the coupler is present in an amount of about 1.times.10.sup.-2 mole to 5.times.10.sup.-1 mole per mole of silver.
- 10. A process as claimed in claim 1, wherein said aromatic primary amine is the compound represented by general formula (IV) or (V): ##STR13## wherein R, R.sub.1, R.sub.2, R.sub.3, X.sub.1, and X.sub.2 each represent a hydrogen atom, a halogen atom, an alkyl group, a substituted alkyl group, an alkoxy group, an acetamido group, an aralkyl group, an alkylsulfonyl group, a carbamoyl group, or a sulfamoyl group and R.sub.1 and R.sub.2 may combine with each other to form one ring.
- 11. A process as claimed in claim 10, wherein R represents ##STR14## where Y.sub.1 has the same meaning as defined above.
- 12. A process as claimed in claim 10, wherein Y represents an unsubstituted alkyl group or substituted alkyl group having 1 to 22 carbon atoms, an unsubstituted or substituted alkenyl group having 2 to 22 carbon atoms, an unsubstituted or substituted aralkyl group having 7 to 22 carbon atoms, an unsubstituted or substituted aryl group having 6 to 22 carbon atoms, an unsubstituted or substituted cyclo-alkyl group having 5 to 22 carbon atoms or an unsubstituted or substituted heterocylic group having 5 to 22 carbon atoms.
- 13. A process as claimed in claim 10, wherein X.sub.1 and X.sub.2 each represents a hydrogen atom, a halogen atom, an unsubstituted or substituted alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyloxy group, a sulfonyloxy group, an acylamino group, a sulfonylamino group, an alkyloxycarbonyloxy group, an aryloxycarbonyloxy group or an imido group.
- 14. A process as claimed in claim 10, wherein R is attached to the 2-position of the resorcinol nucleus.
- 15. A process as claimed in claim 10, wherein silver is present in an amount of about 0.1 g/m.sup.2 to 6 g/m.sup.2.
- 16. A process as claimed in claim 11, wherein silver is present in an amount of about 0.2 g/m.sup.2 to 4 g/m.sup.2.
- 17. A process as claimed in claim 10, 11 or 12, wherein the coupler is present in amount of about 2.times.10.sup.-3 mole to 5.times.10.sup.-1 mole per mole of silver.
- 18. A process as claimed in claim 17, wherein the coupler is present in an amount of about 1.times.10.sup.-2 mole to 5.times.10.sup.1 mole per mole of silver.
Priority Claims (1)
Number |
Date |
Country |
Kind |
56-58069 |
Apr 1981 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 368,927 filed April 16, 1982 now abandoned.
US Referenced Citations (5)
Continuations (1)
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Number |
Date |
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Parent |
368927 |
Apr 1982 |
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