Controlled site epitaxy on silver halide grains
AssigneeEastman Kodak Company
InventorsJoseph F. Bringley, Roger A. Bryant
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Abstract
A radiation-sensitive silver halide emulsion is disclosed comprised of composite grains including host grains having predominantly {111} crystal faces, cuprous ions adsorbed to the {111} crystal faces of the host grains to act as a site director for subsequently deposited silver salt, and silver salt protrusions having their highest incidence adjacent at least one of the corners and edges of the host grains.
Claims10
A radiation-sensitive silver halide emulsion comprised of
- a dispersing medium and composite grains each including
- a silver halide host grain having predominantly {111} crystal faces,
- a site director for silver salt deposition adsorbed to the {111} crystal faces of the host grain, and
- silver salt protrusions having their highest incidence adjacent at least one of the corners and edges of the host grain,
- WHEREIN
- the site director is comprised of cuprous ions.
A radiation-sensitive silver halide emulsion according 7 wherein the cuprous ions are adsorbed to the host grains in a concentration of up to 3 times monolayer coverage.
Dependencies are inferred from the claim text.