Photographic recording material with metal complexable, heterocyclic azo dye

Abstract

Abstract Cyan images may be prepared by the dye diffusion transfer process, using dye-releasers which on development release diffusible dyes capable of forming light-fast cyan metal-dye-complexes particularly with copper or nickel ions. As also the dye-releasers are capable of complexation, cyan images can be prepared not only from the released dyes but also from the dye-releasers ("retained image"). Released dyes and dye-releasers of the present invention contain a chromophor of the following formula: ##STR1## wherein R 1 , R 2 , R 3 and R 4 , which may be the same or different, each represents --H, --F, --Cl, --Br, --CN, --NO 2 , --CF 3 , --OCF 3 , --SCF 3 , alkyl, alkoxy, alkylthio, acylamino, alkylsulfonyl, arylsulfonyl, --CO--X or --SO 2 --Y or two adjacent groups R 1 -R 4 together constitute a condensed benzene ring which may contain further substituents; R 5 represents hydrogen or a substituent having an electron donor character; R 6 represents hydrogen, halogen or alkyl; G represents a group capable of chelate formation; X represents --OH, alkoxy, an amino group optionally substituted by alkyl or aryl, or a cyclic amino group; Y represents --H, --OH, an amino group optionally substituted by alkyl or aryl, a cyclic amino group or a group corresponding to the following general formula: --NH--So 2 --R 7 ; R 7 represents alkyl, aryl, an amino group optionally disubstituted by alkyl or a cyclic amino group; and n represents 0 or 1.

Inventors

• 👤 Peter Bergthaller
• 👤 Gunther Schenk
• 👤 Gerhard Wolfrum
• 👤 Hans-Volker Runzheimer

Bibliographic Details