Positive image forming method
US4868089A · kind A · utility
2Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Apr 13, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/48538
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A positive image forming method is disclosed. Said method comprises in sequence the steps of subjecting to imagewise exposure a silver halide photographic material having a silver halide emulsion layer containing a non-prefogged internal image forming silver halide, increasing the surface sensitivity of said silver halide in the substantial absence of water and performing development.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.