Heat development process and color photographic recording material suitable for this process

US4740446A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Karl-Wilhelm Schranz · Langenfeld, DE
• Gunther Schenk · Cologne, DE

Key dates

• Filing date: Oct 31, 1986
• Grant date: Apr 26, 1988
• Expiry date: Oct 31, 2006

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C8/408
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Compounds corresponding to formula I are suitable for use as thermal development and diffusion promoting agents for the heat development process. The said compounds enable higher color transfer densities to be obtained and/or the development time to be reduced. ##STR1## wherein R.sup.1, R.sup.2 denote alkyl, cycloalkyl, aralkyl, aryl or acyl and PA0 Z denotes a group for completing a saturated heterocyclic ring containing 5 to 11 ring members.