Photographic element comprising a development inhibitor releasin

Details Photographic element comprising a development inhibitor releasin Photographic element comprising a development inhibitor releasin

1990-02-22

1991-06-04

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

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

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

430544, 430553, 430557, 430957, G03C 7305, G03C 800, G03C 734, G03C 736

Patent

active

050213229

ABSTRACT:
Photographic compound (A) capable of releasing a development inhibitor group by means of a displacement reaction enables increased image acutance when the compound contains in a coupling position a coupling-off group represented by the formula: ##STR1## wherein X, R.sub.1, R.sub.2, R.sub.3, R.sub.4, and Q are as defined in the application. Such a compound (A) is useful in a photographic silver halide material and process.

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patent: 4840884 (1989-06-01), Mooberry et al.
patent: 4857440 (1989-08-01), Begley et al.
patent: 4857440 (1989-08-01), Begley et al.
patent: 4861701 (1989-08-01), Burns et al.
Research Disclosure, Dec. 1989, Item #308119.

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