Patent · US Expired

Stabilization of a photographically produced silver image using an amino-1,2,4-triazole

US4760015A · kind A · utility

6Cited by

5References

4Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Werner Berthold · Leverkusen, DE
Gunther Mahlberg · Bensberg, DE
Paul Marx · Corning, US
Hans hlschlager · Bensberg, DE

Key dates

Filing date	Apr 13, 1987
Grant date	Jul 26, 1988
Priority date	—
Expiry date	Apr 13, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S430/166
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Photographically produced black-and-white images (silver images) are stabilized against subsequent destruction of the silver image, in particular against the occurrence of so-called microspot defects, by treatment of the finished silver image with an aqueous after-treatment bath containing an amino-1,2,4-triazole.

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