Patent · US Expired

Color photographic silver halide material

US6531269B2 · kind B2 · utility

0Cited by

7References

20Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Ralf Wirowski · Neunburg vorm Wald, DE
Jan Haller · Leverkusen, DE
Stefan Herrmann · Bonn, DE
Jurgen Jung · Neunkirchen, DE

Key dates

Filing date	Mar 12, 2001
Grant date	Mar 11, 2003
Priority date	—
Expiry date	Mar 12, 2021

Classification

Technology area (CPC G)Physics
CPC primaryG03C7/30547
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A color photographic silver halide material, which has a support which comprises at least one blue-sensitive, yellow-coupling silver halide emulsion layer nearest the light source and at least one green-sensitive, magenta-coupling silver halide emulsion layer and at least one red-sensitive, cyan-coupling silver halide emulsion layer which are further from the light source than is the at least one blue-sensitive layer, and which contains at least one cyan masking coupler which has its maximum absorption above 650 mn, the red-sensitive layers have their maximum sensitivity at 620±20 nm and the absorption of the masking coupler at the maximum sensitivity of the red-sensitive layers is at most 70% of its absorption at 690 mn, is distinguished by improved color reproduction and color saturation in the magenta layer without loss of sensitivity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.