Image information in color reversal materials using weak and strong inhibitors
US5380633A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1993 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Jan 15, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/158
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved color reversal element is disclosed capable of development in black and white developer, and of development in a color developer comprising: PA1 a support having thereon at least two light-sensitive silver halide emulsion layers and a combination of compounds (A) and (B) PA1 Compound (A) capable of releasing a development modifier having the structural formula EQU M(Time).sub.n --INH(1) wherein PA1 M is a carrier, moiety from which --(Time).sub.n --INH(1) is released during black and white development to provide a weak inhibitor; PA1 Compound (B) having the structural formula EQU CAR--(TIME).sub.n --INH(2) wherein: PA1 CAR is a carrier moiety from which --(TIME).sub.n --INH(2) is released during color development to provide a strong inhibitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.