Color photographic recording material
US4186011A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1977 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Nov 2, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/158
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a color photographic material in which at least one of the partial images yellow, magenta and cyan is produced in a double layer consisting of a first layer of lower sensitivity and a second layer of higher sensitivity and arranged further away from the layer support than said first layer, at least one color unit, preferably the blue-sensitive and/or the green sensitive color unit consists of at least three layers. PA1 (a) a first silver halide emulsion layer of low sensitivity containing a color coupler PA1 (b) a second silver halide emulsion layer which may contain a color coupler, and PA1 (c) a third layer which is free from silver halide, but contains a color coupler, the coupler in said layers a, b and c forming on color development dyes of substantially the same color which is complementary to that of the light to which the layers are sensitive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.