Photographically useful compounds including at least one 1,3-sulfur-oxygen ring system
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United States of America Patent
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Oct 7, 1997
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N/A
app pub date -
May 13, 1996
filing date -
Nov 13, 1995
priority date (Note) -
Expired
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Abstract
There are described heat-developable photosensitive image-recording materials which include a compound having at least one cyclic 1,3-sulfur-oxygen moiety. The 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 reagent in an imagewise distribution corresponding to that of the silver ion and/or the soluble silver complex. The reagent includes a photographically useful group such as a complete dye or dye intermediate.
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