Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Reexamination Certificate
2005-01-18
2005-01-18
Letscher, Geraldine (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
C430S569000, C430S449000
Reexamination Certificate
active
06844147
ABSTRACT:
The invention provides a silver halide emulsion, comprising: silver halide grains containing silver chloride as a primary component and further containing silver bromide; wherein, when an average value of a silver bromide content of the silver halide grains is represented by Y (mol %), a silver bromide content of at least 68% of the silver halide grains is from 0.82×Y (mol %) to 1.18×Y (mol %). Further, the invention provides a method of producing the silver halide emulsion, comprising the step of reacting at least a silver ion, a chlorine ion and a bromine ion; wherein a growth speed at a time of forming a silver bromine-containing phase in the reaction process is at least 60% of a critical growth speed.
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patent: 4684607 (1987-08-01), Maskasky
patent: 5385818 (1995-01-01), Maskasky
patent: 20030104326 (2003-06-01), Ohshima et al.
patent: 58-108533 (1983-06-01), None
Nakanishi Masatoshi
Yamashita Seiji
Fuji Photo Film Co. , Ltd.
Letscher Geraldine
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