Silver halide color photographic material and development processing method of the same
US6479229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Jul 12, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/03517
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multilayer silver halide color photographic material, wherein when the multilayer silver halide color photographic material is development processed with a color developing solution containing a p-phenylenediamine derivative as a color developing agent, the relationship between the development proceeding velocity a of the lowermost layer of the constituting emulsion layers of the photographic material and the development proceeding velocity b of the uppermost layer satisfies the following equation (R-1):0.65≦a/b≦2.0  (R-1)provided that the development proceeding velocity is expressed by the reciprocal of the developing time required for the density value by development to reach ½ of the maximum density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.