Patent · US Expired

Photographic recording material

US5009990A · kind A · utility

1Cited by

9References

4Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Rainer Scheerer · Neunburg vorm Wald, DE
Franz Moll · Leverkusen, DE

Key dates

Filing date	Nov 20, 1989
Grant date	Apr 23, 1991
Priority date	—
Expiry date	Nov 20, 2009

Classification

Technology area (CPC G)Physics
CPC primaryG03C1/34
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A photographic recording material which has at least one silver halide emulsion layer containing gelatine, at least one protective layer and at least one hardening layer and in which the protective layer is further removed from the layer support than any silver halide emulsion layer and the hardening layer is further removed from the layer support than any other layer and contains an effective quantity of at least one instant hardener will have improved stability in storage under moist, warm conditions if the protective layer contains an effective quantity of at least one azaindene.

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