Patent · US Expired

Photographic color developer composition

US4155764A · kind A · utility

1Cited by

6References

3Claims

0Family size

Assignee

AGFA-Gervaert AG · DE

Inventors

Arnfried Melzer · Cologne, DE
Erwin Schon · Leverkusen, DE

Key dates

Filing date	May 17, 1977
Grant date	May 22, 1979
Priority date	—
Expiry date	May 17, 1997

Classification

Technology area (CPC G)Physics
CPC primaryG03C7/413
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A photographic color developer composition containing a color developer compound and an antioxidant wherein it contains a water-soluble enolizable .alpha.-aminocarbonyl compound as antioxidant is provided. Resistance to atmospheric oxygen of photographic color developer baths is improved.

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