Silver halide emulsion and method for producing same
AssigneeFuji Photo Film Co., Ltd.
InventorsSeiji Yamashita, Masatoshi Nakanishi
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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.
Claims15
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 %).
A method of producing a 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;
- and
- the silver halide emulsion comprises a silver halide grain 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 grain 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 %).
Dependencies are inferred from the claim text.