Patent · US Expired

Process for the development of color photographic images with p-dialkylaminoaniline color developers

US4322492A · kind A · utility

3Cited by

4References

4Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Friedrich-Wilhelm Kunitz · Wermelskirchen, DE
Walter Puschel · Leverkusen, DE
Karl-Wilhelm Schranz · Langenfeld, DE

Key dates

Filing date	Apr 23, 1981
Grant date	Mar 30, 1982
Priority date	—
Expiry date	Apr 23, 2001

Classification

Technology area (CPC G)Physics
CPC primaryG03C7/4136
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The process for the development of color photographic images with an aqueous alkaline color developer mixture comprising methyl-p-dialkylaminoaniline derivates. The process provides brilliant color photographic images avoiding coloration of the support and color fog even when processing at high temperatures.

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