Process for hardening photographic layers containing gelatine

US4119464A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Wolfgang Sauerteig · Leverkusen, DE
• Wolfgang Himmelmann · Leverkusen, DE
• Rudolf Meyer · Leverkusen, DE
• Erwin Ranz · Leverkusen, DE
• Willibald Pelz · Cologne, DE

Key dates

• Filing date: May 31, 1977
• Grant date: Oct 10, 1978
• Expiry date: May 31, 1997

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C1/30
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In a process for hardening gelatine containing photographic layers, in particular multilayered photographic films, using conventional hardeners and quick acting hardeners, the surface of a layer which contains gelatine and complex forming organic or inorganic salts is exposed to the action of an aqueous solution containing a wetting agent and a quick acting hardener, the quantity of water applied with the solution being calculated so that the layer or multilayered film undergoes swelling to a certain extend, and the degree of swelling is maintained for a period from 10 to 200 seconds, whereupon the layer or multilayered film is dried at a temperature below 30.degree. C.