Solid particle dispersion developer precursors for photographic elements
US5240821A · kind A · utility
16Cited by
13References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1991 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Dec 19, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A dispersion comprising solid particles of a developer precursor having the structure EQU CD--(T).sub.m --S in which PA1 CD is a silver halide color developer, PA1 T is a timing group, PA1 m is an integer from 0 to 6, and PA1 S is a blocking group, and a vehicle in which the solid particles are insoluble, is disclosed. The dispersion can be incorporated in a photographic element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.