发明名称 |
DIRECT POSITIVE TYPE SILVER HALIDE PHOTOGRAPHIC SENSITIVE MATERIAL AND PROCESSING METHOD THEREFOR |
摘要 |
PURPOSE:To obtain a high quality photographic image having sufficiently high max. density and sufficiently low min. density by regulating silver halide particles in a silver halide emulsion contg. a specified magenta coupler. CONSTITUTION:A green sensitive layer is formed with a silver halide emulsion contg. silver halide particles whose particle size distribution curve has at least two peaks. The pref. particle size at the lowest peak is <=0.30mum and that at other peak is <=1.5mum. The silver halide emulsion also contains a magenta coupler represented by formula I, wherein Z is a group of nonmetallic atoms required to form a hetero ring contg. N, X is H or a group which can be released by a reaction with the oxidized product of a color developing agent and R is H or a substituent. Wide gradation and satisfactory tone reproduction are attained. |
申请公布号 |
JPH01221739(A) |
申请公布日期 |
1989.09.05 |
申请号 |
JP19880047179 |
申请日期 |
1988.02.29 |
申请人 |
KONICA CORP |
发明人 |
TOSAKA YASUO;KURAMOTO KAZUYA;NONAKA YOSHIYUKI |
分类号 |
G03C1/485;G03C7/30;G03C7/38 |
主分类号 |
G03C1/485 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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