发明名称 Silver halide color photographic material
摘要 A novel silver halide color photographic material is provided which is excellent in color reproduction and color image fastness, and shows only small variations in gradation due to fluctuaion in treatment conditions such as treatment composition, time, and temperature. The present silver halide color photographic material has a pyrazoloazole coupler and silver halide grains consisting of regular crystals with a twin content of 5% or less, said silver halide grains being represented by the formula: AgClxBryIl-x-y wherein x and y satisfy the relationships 0<=x<1, 0<=y<=1, and 0<=l-x-y<=0.02. In preferred embodiments of the present invention, said pyrazoloazole coupler is represented by the general formula: (* CHEMICAL STRUCTURE *) wherein R1 represents a hydrogen atom or a substituent group; X represents a hydrogen atom or a group which can be liberated by a coupling reaction with an oxide of an aromatic primary amine developing agent; and Za, Zb and Zc each represent a methine, substituted methine, =N- or -NH-, with the proviso that one of Za-Zb bond and Zb-Zc bond is a double bond and the other a single bond and that a condensation may occur at Zb-Zc bond to form an aromatic ring. The regular crystals comprises cubic, rhombic dodecahedral, regular octahedral, and tetradecahedral grains. The coefficient of variation of particle size of silver halide is preferably 25% or less, more preferably 20% or less. The average particle size of the silver halide is preferably 0.2 to 0.9 (my)m, more preferably 0.3 to 0.7 (my)m.
申请公布号 US5302502(A) 申请公布日期 1994.04.12
申请号 US19920996473 申请日期 1992.12.23
申请人 FUJI PHOTO FILM CO., LTD. 发明人 SHIBATA, YOSHINORI
分类号 G03C1/035;(IPC1-7):G03C7/38 主分类号 G03C1/035
代理机构 代理人
主权项
地址