Patent · US Expired

Color photographic silver halide material

US6379879B2 · kind B2 · utility

0Cited by

4References

10Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Jorg Hagemann · Neunburg vorm Wald, DE
Gunter Helling · Siegburg, DE
Heinz Wiesen · Euskirchen, DE
Ralf Wirowski · Neunburg vorm Wald, DE
Ralf Buscher · Lohmar, DE

Key dates

Filing date	Feb 26, 2001
Grant date	Apr 30, 2002
Priority date	—
Expiry date	Feb 26, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S430/158
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A color photographic recording material having at least one spectrally sensitized silver halide emulsion layer, characterized in that said silver halide emulsion layer contains an oil former having a pKa value of less than 18 and a DIR coupler and the material contains at least one color coupler, wherein the color coupler and/or the DIR coupler have specific structures, is distinguished by an increased interimage effect in comparison with the prior art without sensitivity being reduced.

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