Global Patent Index - EP 0186868 A3

EP 0186868 A3 19880921 - PHOTOGRAPHIC ELEMENT AND PROCESS FOR PROVIDING METAL COMPLEX COLOR IMAGES

Title (en)

PHOTOGRAPHIC ELEMENT AND PROCESS FOR PROVIDING METAL COMPLEX COLOR IMAGES

Publication

EP 0186868 A3 19880921 (EN)

Application

EP 85116272 A 19851219

Priority

  • US 68847885 A 19850102
  • US 68847985 A 19850102

Abstract (en)

[origin: EP0186868A2] A process of obtaining highly stable color dyes (e.g. color masking dyes) comprises use of an element which has a support having thereon at least one silver halide emulsion layer having associated therewith an essentially colorless, immobile, ligand-releasing compound of the structure LIG-X. In this structure, LIG is a ligand which is capable of complexing with metal ions (e.g. ferrous ions) to form a metal complex dye, and X is a group which, as a function of silver halide development, is cleaved from LIG. A color image is formed by developing the described element after imagewise exposure with a developing agent to imagewise cleave the bond between LIG and X, and treating the developed element with metal ions (e.g. ferrous ions) to form a metal complex dye image.

IPC 1-7

G03C 7/32

IPC 8 full level

G03C 7/30 (2006.01); G03C 7/333 (2006.01)

CPC (source: EP)

G03C 7/3046 (2013.01); G03C 7/333 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB NL

DOCDB simple family (publication)

EP 0186868 A2 19860709; EP 0186868 A3 19880921

DOCDB simple family (application)

EP 85116272 A 19851219