Silver halide photographic emulsion

Details Silver halide photographic emulsion Silver halide photographic emulsion

2005-06-07

2005-06-07

Letscher, Geraldine (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

C430S568000, C430S569000

Reexamination Certificate

active

06902877

ABSTRACT:
A silver halide photographic emulsion comprising grains, wherein not less than 50% of the number of all the grains are occupied by silver iodebromide or silver bromochloroiodide tabular grains each meeting the requirements (i) to (iii) below:(i) a thickness is less than 0.13 μm;(ii) an equivalent-circle diameter is not less than 1.0 μm; and(iii) a silver iodide content in a fringe internal region A between a twin plane and a grain major surface is higher than a silver iodide content in a fringe internal region B between two twin planes.

REFERENCES:
patent: 4414306 (1983-11-01), Wey et al.
patent: 4414310 (1983-11-01), Daubendiek et al.
patent: 4433048 (1984-02-01), Solberg et al.
patent: 4434226 (1984-02-01), Wilgus et al.
patent: 4439520 (1984-03-01), Kofron et al.
patent: 4459353 (1984-07-01), Maskasky
patent: 5709988 (1998-01-01), Black et al.
patent: 6534257 (2003-03-01), Kikuchi
patent: 6632595 (2003-10-01), Kikuchi et al.
patent: 142169 (2001-05-01), None

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