Patent · US Expired

Color photographic silver halide material

US5853971A · kind A · utility

1Cited by

6References

11Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Peter Bell · Neunburg vorm Wald, DE
Hans-Ulrich Borst · Elsdorf, DE
Ralf Buscher · Lohmar, DE
Johannes Willsau · Leverkusen, DE
Jorg Siegel · Leverkusen, DE

Key dates

Filing date	Apr 15, 1997
Grant date	Dec 29, 1998
Priority date	—
Expiry date	Apr 15, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG03C7/3029
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A color photographic silver halide material contains on a support at least one red-sensitive, cyan-coupling, at least one green-sensitive, magenta-coupling and at least one blue-sensitive, yellow-coupling silver halide emulsion layer together with interlayers between layers of different colour sensitivity, wherein at least one of the stated interlayers contains at least one masking coupler, the masking coupler having a reaction rate constant for the coupling reaction with the developer oxidation product of .gtoreq.5000 1-mol.sup.- .cndot.s.sup.-1, is distinguished improved sensitivity without increase of granularity.

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