Photographic processing method using bleach solution comprising hydrogen peroxide and halide ions
US5547816A · kind A · utility
6Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1995 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Feb 15, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of photographic color processing which comprises a bleach step wherein the bleach solution comprises hydrogen peroxide, or a compound which releases hydrogen peroxide, and halide ions and which has a pH in the range of 5 to 11 and bleach solutions therefore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.