Patent ID: 6294319
Filing Date: 2001-09-25
Classification: G03C

Abstract:
A method for preparing a silver halide emulsion comprising the steps of:(1) forming a silver halide grain emulsion,(2) subjecting the formed silver halide emulsion to desalting to remove soluble salts,(3) subjecting the silver halide emulsion to spectral and/or chemical sensitization, and(4) preparing a coating solution using the spectrally and/or chemically sensitized silver halide emulsion, wherein in any of the steps (1) to (4), a compound represented by the following formula (I) is incorporated into the silver halide emulsion:{X--(L.sub.1).sub.n1 }.sub.n2 --L.sub.2 --(SOL).sub.m formula (I)whereinX represents a chlorine atom or a bromine atom;L.sub.1 is represented by formula (II):--C(R.sub.1)(R.sub.2)--CH(R.sub.3)--EWG-- formula (II)wherein R1, R2 and R3 each represent a hydrogen atom or a substituent; and EWG represents --COO--, --OCO--, --SO.sub.2 --, --CON(R.sub.4)--, --N(R.sub.4)CO--, --CSN(R.sub.4)--, --N(R.sub.4)CS--, --N(R.sub.4)--, --O--, --S--, --CO--, --CS--, --COCO--, --SO.sub.2 N(R.sub.4)-- or --N(R.sub.4)SO.sub.2 --, in which R.sub.4 represents a hydrogen atom, an alkyl group or an aryl group;L.sub.2 represents a bivalent linkage group, which is an aromatic group;SOL represents a water-solubilizing group;n1 is 1; andm and n2 each are an integer of 1 to 4.