Color image-forming process
US4764455A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1986 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Aug 6, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2007/3039
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color image-forming process is described, for a silver halide color photographic material comprising a support having provided thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, which process comprises incorporating in the photographic material a yellow dye represented by formula (I) and processing the photographic material using a bleach-fixing solution containing a ferric complex of aminopolycarboxylic acid and a thiosulfate ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, a carboxy group, a substituted amino group, a carbamoyl group, a sulfamoyl group, a nitro group or an alkoxycarbonyl group; PA1 R.sub.3 and R.sub.4 each represents a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted alkenyl group, an unsubstituted or substituted aryl group, an acyl group or a sulfonyl group, or R.sub.3 and R.sub.4 may be taken together to form a 5- or 6-membered ring; PA1 X represents a cyano group; and PA1 Y represents an acyl group…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.