Granulated color photographic developer and its preparation
US4923786A · kind A · utility
21Cited by
2References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1989 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Aug 18, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C5/265
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A granulate mixture containing at least three different granulates of solid constituents of a color photographic developer, one granulate containing the protective agent against oxidation, another granulate containing the developer substance and the third granulate containing the alkali donor, is pourable, produces no dust, rapidly dissolves in water, has unlimited durability and gives reliable, reproducible results on development.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.