Photographic elements containing naphthylsulfonylethylthio heterocycle developement inhibitor precursor
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United States of America Patent
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Apr 22, 1986
Issued Date -
N/A
app pub date -
Apr 18, 1985
filing date -
Dec 10, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A photographic element comprised of a support having provided thereon at least one silver halide emulsion layer, the element containing a development inhibitor precursor, is disclosed. The development inhibitor precursor is a compound represented by following general formula (I): ##STR1## wherein A represents an unsubstituted or substituted phenyl group or a 5-membered or 6-membered nitrogen-containing heterocyclic ring; Q represents a naphthalene skeleton; R.sup.1, R.sup.2, and R.sup.3, which may be the same or different, independently represent a hydrogen atom or a monovalent substituent; and n represents 1 or 2. The photographic element gives improved image quality particularly in the low Dmin area. The element can be processed over a wide range of different processing temperatures and has improved preservability.
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