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

US4816372A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Gunther Schenk · Cologne, DE
• Manfred Peters · Bad Schwartau, DE

Key dates

• Filing date: Sep 14, 1987
• Grant date: Mar 28, 1989
• Expiry date: Sep 14, 2007

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C8/246
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Compounds of the formula I are suitable as thermal development and diffusion promoting agents for the heat development process. With the aid of said compounds higher color transfer densities can be achieved and/or the development time can be shortened. ##STR1## wherein X.sub.1 denotes --SO.sub.2 -- or--CO--; PA1 R.sup.1 to R.sup.4 denote alkyl, cycloalkyl, aralkyl or aryl; PA1 R.sup.5 and R.sup.6 denote acyl or a group as defined for R.sup.1 to R.sup.4 ; and R.sup.1 together with R.sup.5, R.sup.2 together with R.sup.6, R.sup.3 together with R.sup.4 and/or R.sup.1 together with R.sup.2 may in each case form a heterocyclic ring containing at least one nitrogen atom.