Image-recording materials with 1,3-sulfur-nitrogen dye releasers
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United States of America Patent
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Aug 19, 1997
Issued Date -
N/A
app pub date -
Nov 20, 1996
filing date -
Feb 26, 1996
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Expired
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Abstract
There are described color-providing compounds having at least two cyclic 1,3-sulfur-nitrogen moieties and one complete dye or dye intermediate. The color-providing compound is stable in the photographic processing composition but capable of undergoing cleavage in the presence of an imagewise distribution of silver ions and/or soluble silver complex made available as a function of development to liberate a complete dye or dye intermediate in an imagewise distribution corresponding to that of the silver ion and/or the soluble silver complex. The color-providing compounds are useful as image-forming materials in color photographic, photothermographic, thermographic, and other processes.
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