TREA

Photographic speed increasing and latent image stabilizing compounds, silver halide emulsions, and photographic elements

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Information

  • Patent Grant
  • T103803
  • Patent Number
    T103,803
  • Date Filed
    Monday, August 16, 1982
    42 years ago
  • Date Issued
    Tuesday, January 3, 1984
    40 years ago
Information
Abstract
Photographic silver halide emulsions show increased speed and reduced latent image fading when a compound of the following structure is incorporated: ##STR1## wherein: X is --O--, --S--, --Se--, or ##STR2## Y represents the atoms completing a fused aromatic nucleus; Z is ##STR3## and R is hydrogen or lower alkyl of from 1 to 5 carbon atoms.
Description
Divisions (1)
Number Date Country
Parent 320794 Nov 1981