| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for further increasing the sensitivity of a silver halide emulsion. SOLUTION: The process for incorporating dopants in a silver halide emulsion comprises precipitating silver halide emulsion grains in a reaction vessel, wherein at least one gallium dopant, at least one Group 8 metal dopant, and at least one selenium dopant are introduced into the reaction vessel during precipitation of the silver halide grains; where the gallium dopant is introduced in the form of a gallium halide coordination complex of the formula (I): [R<SB>x</SB>NH<SB>y</SB>]<SB>3</SB>GaX<SB>6</SB>wherein R; X; x; y are each a specified group or number; and the Group 8 metal dopant satisfies the formula (II): [ML<SB>6</SB>]<SP>n</SP>wherein n; M; L<SB>6</SB>are each a specified group or number. This invention includes an emulsion obtained by the above method and a photographic element containing the emulsion. COPYRIGHT: (C)2005,JPO&NCIPI
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