Photographic elements containing naphthylsulfonylethylthio heter

Details Photographic elements containing naphthylsulfonylethylthio heter Photographic elements containing naphthylsulfonylethylthio heter

1985-04-18

1986-04-22

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430382, 430445, 430544, 430559, 430611, 430957, 430960, G03C 140, G03C 554, G03C 134

Patent

active

045842574

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.

REFERENCES:
patent: 4009029 (1977-02-01), Hammond et al.
patent: 4355101 (1982-10-01), Mehta et al.
patent: 4390613 (1983-06-01), Mehta et al.

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