Multilayer color sensitive materials
US4145219A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1977 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Jul 7, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/30541
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silver halide multilayer color sensitive material comprising a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer on a support, wherein each silver halide emulsion layer contains a non-diffusible image forming coupler, the improvement which comprises at least one of the silver halide emulsion layers comprising an upper unit silver halide emulsion layer, a middle unit silver halide emulsion layer and a lower unit silver halide emulsion layer, in which the sensitivity of the three unit silver halide emulsion layers decreases in order from the upper unit silver halide emulsion layer to the lower unit silver halide emulsion layer, and at least the middle unit silver halide emulsion layer contains a development inhibitor releasing compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.