Color photographic recording material for the production of colored images by the dye diffusion transfer process

US4407929A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Immo Boie · Cologne, DE
• Kaspar Wingender · Leverkusen, DE

Key dates

• Filing date: Nov 25, 1981
• Grant date: Oct 4, 1983
• Expiry date: Nov 25, 2001

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C8/52
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In a color photographic recording material for the dye diffusion transfer process a transparent layer support, a light sensitive element, a light-reflecting opaque layer and an image-receiving layer form in that order a non-disconnectable assembly of layers and the light-sensitive element contains at least one silver halide emulsion layer and associated therewith an electron donor compound and a non-diffusing reducible color-providing compound that when reduced liberates a diffusible dye under alkaline development conditions. The material provides "development control on viewing" when the first part, e.g. about 2 minutes, of total development is conducted in dark and is completed at ambient light.