Patent ID: 6277551
Filing Date: 2001-08-21
Classification: G03C,Y10S

Abstract:
Light-sensitive {111} tabular silver chlor(oiod)ide emulsion comprising a binder and silver chlor(oiod)ide crystals having at least 90 mole % of silver chloride, accounting for at least 50% of total protective surface of said crystals, having an average thickness of less than 0.3 .mu.m, an average crystal diameter of more than 0.5 .mu.m and an average aspect ratio of more than 2:1, wherein said tabular crystals have been spectrally sensitized with blue and/or green spectral sensitizers and have been doped with at least one of a hexacoordinated metal ion complex represented by formula (I)[ML.sub.6-n F.sub.n ].sup.m- (I)wherein n is an integer having a value of at least 4,wherein m is an integer having a value of 1, 2, 3 or 4,wherein M represents a metal selected from the group consisting of Ir, Os and Pt,and wherein L represents a ligand selected from the group consisting of Cl, Br and I; and wherein said at least one of said metal ion complexes is present in an annular ring and wherein in said annular ring said ion complex ion(s) is(are) present in an amount of from 1.times.10.sup.-6 up to 1000.times.10.sup.-6 mole per mole of silver.