EP 0117227 B1 19880323 - PHOTOGRAPHIC MATERIAL FOR THE SILVER DYE BLEACH PROCESS
Title (en)
PHOTOGRAPHIC MATERIAL FOR THE SILVER DYE BLEACH PROCESS
Publication
Application
Priority
CH 42583 A 19830126
Abstract (en)
[origin: US4576885A] A photographic silver dye bleach material which contains a compound of the formula <IMAGE> in which R is a substituted alkyl, R1 is substituted or unsubstituted alkyl, p is 1 or 2, q is 0 or 1, p+q having to be 1 or 2, and n is 1 to 20, or a salt of this compound. The benzoquinones used deactivate bleach catalysts which diffuse beyond the silver image area produced by development of the exposed material. The silver dye bleach material containing these compounds is therefore distinguished by high contrast, high sharpness and good color reproduction.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
G03C 7/28 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0117227 A2 19840829; EP 0117227 A3 19850821; EP 0117227 B1 19880323; CH 656725 A5 19860715; DE 3470102 D1 19880428; JP S59139030 A 19840809; US 4576885 A 19860318
DOCDB simple family (application)
EP 84810036 A 19840120; CH 42583 A 19830126; DE 3470102 T 19840120; JP 1111484 A 19840126; US 57101884 A 19840116