Patent · US Expired

Color photographic recording material

US4186011A · kind A · utility

11Cited by
3References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 2, 1977
Grant dateJan 29, 1980
Priority date
Expiry dateNov 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.