Iodochloride emulsions containing quinones having high sensitivi

Details Iodochloride emulsions containing quinones having high sensitivi Iodochloride emulsions containing quinones having high sensitivi

1994-12-22

1996-08-20

Huff, Mark F.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430569, 430607, G03C 1035, G03C 134

Patent

active

055478271

ABSTRACT:
The invention relates to a radiation sensitive emulsion comprised of a dispersing medium and silver iodochloride grains
Wherein the silver iodochloride grains
are partially bounded by {100} crystal faces satisfying the relative orientation and spacing of cubic grains and
contain from 0.05 to 1 mole percent iodide, based on total silver, with maximum iodide concentrations located nearer the surface of the grains than their center
and wherein said emulsion further comprises a quinone comprising ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 may be independently substituted or non-substituted alkyl, aryl, alkylaryl, or halogen, carboxy, amido, cyano, methoxy; together R.sub.1 and R.sub.2, R.sub.3 and R.sub.4 may form carbocyclic, heterocyclic, aromatic, or heteroaromatic rings.

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patent: 4945031 (1990-07-01), Sakai et al.
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patent: 5290661 (1994-03-01), Idota et al.
patent: 5320938 (1994-06-01), House et al.
Derwent Abstract, JP-A-03 084 545, vol. 15, No. 262, Jul. 1991.

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