Photographic elements with development inhibitor precursor

Details Photographic elements with development inhibitor precursor Photographic elements with development inhibitor precursor

1983-12-09

1985-04-16

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...

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

Patent

active

045116440

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. The development inhibitor precursor is represented by the 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; R.sup.1 represents a hydrogen atom or a monovalent substituent; and R.sup.2 represents an organic ballasting group. The element is capable of providing color images having improved image quality particularly with respect to having a low density in the Dmin areas. The photographic element can be processed over a wide range of processing temperatures. Further, the element can be preserved for long periods of time without having a reduction in the density in the Dmax areas.

REFERENCES:
patent: 3084044 (1963-04-01), Dersch et al.
patent: 3260597 (1966-07-01), Weyerts et al.
patent: 4246333 (1981-01-01), Fuseya et al.
patent: 4355101 (1982-10-01), Mehta et al.
patent: 4390613 (1983-06-01), Mehta et al.

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