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1. (WO1983000396) PROCESS FOR BLEACHING SILVER DYE

Pub. No.:    WO/1983/000396    International Application No.:    PCT/JP1982/000269
Publication Date: Fri Feb 04 00:59:59 CET 1983 International Filing Date: Fri Jul 16 01:59:59 CEST 1982
IPC: G03C 5/305
Applicants: FUJI PHOTO FILM COMPANY LIMITED

NAKAMURA, Takashi

ISHIBASHI, Hiroshi

SANO, Masaru

YOKOO, Kenzi

Inventors: NAKAMURA, Takashi

ISHIBASHI, Hiroshi

SANO, Masaru

YOKOO, Kenzi

Title: PROCESS FOR BLEACHING SILVER DYE
Abstract:
A process for bleaching silver dye by using a black developer containing at least one thiazole derivative represented by the general formula (I):$(7,)$(wherein R represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group, and R' and R'' each represents a hydrogen atom or a substituted or unsubstituted alkyl group, or R' and R'', when taken together, form a benzene ring optionally substituted by an alkyl group) or at least one imidazole derivative represented by the general formula (II):$(9,)$(wherein R1, R2, R3, and R4 each represents a hydrogen atom, a substituted or unsubstituted alkyl group or an alkenyl group). Gradation of a finished image can be easily and surely flattened by using ordinary photo-sensitive materials and conducting ordinary processings. In addition, the black developer has an improved storage stability.