Stabilization of photosensitive recording material

US4039332A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Hendrik E. Kokelenberg · Wilrijk, BE
• Rafael P. Samijn · Wilrijk, BE
• Jozef Willy Van den Houte · Berchem, BE
• Robert J. Pollet · Vremde, BE

Key dates

• Filing date: Sep 3, 1976
• Grant date: Aug 2, 1977
• Expiry date: Sep 3, 1996

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C1/675
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A recording process including image stabilization comprising the steps of: PA1 1. image-wise exposing to active electromagnetic radiation of a recording material containing in a recording layer a dye precursor compound and at least one photosensitive organic polyhalogen compound capable of producing photoradicals and a dyestuff with said dye precursor compound when exposed with ultraviolet radiation and/or visible light, and PA1 2. heating the photoexposed recording material thereby transforming the non-decomposed polyhalogen compound into a non-photosensitive substance by reaction with at least one stabilizing substance selected from the group consisting of triphenylamine, A soft base containing an element of the group consisting of phosphorus, arsenic, antimony, bismuth, selenium, and tellurium, and an .alpha.,.beta.-ethylenically unsaturated compound in which at least the .alpha.-carbon atom of at least one ethylene group is linked to cyano, a cyanomethyl group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a carbamoyl group or an aryl group, said stabilizing substance(s) being available in a layer adjacent to the recording layer for allowing on heating the reaction …