Color transfers assemblages with two timing layers and a neutralizing layer
US4314020A · kind A · utility
4Cited by
7References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1980 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | Aug 4, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C8/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photographic assemblages, elements, receiving elements and cover sheets comprise a combination of two timing layers and a neutralizing layer. The outermost timing layer contains photographic addenda, such as development inhibitors, for substantially terminating development of the silver halide emulsion. The timing layer next to the neutralizing layer has a much longer breakdown time so that it is permeated by the alkaline processing composition only after silver halide development has been substantially terminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.