发明公开
- 专利标题： A method for high contrast development of a silver halide photographic material
- 专利标题（中）： 一种银色摄影材料的高对比度开发方法
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申请号： EP85107007申请日： 1985-06-05
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公开(公告)号： EP0164120A3公开(公告)日： 1987-09-30
- 发明人: Okutsu, Eiichi , Hirano, Mitsunori
- 申请人： FUJI PHOTO FILM CO., LTD.
- 专利权人： FUJI PHOTO FILM CO., LTD.
- 当前专利权人： FUJI PHOTO FILM CO., LTD.
- 优先权： JP11473584 19840605
- 主分类号： G03C05/30
- IPC分类号： G03C05/30
摘要：
A silver halide photographic material containing a hydrazine derivative of the general formula (I):
wherein R 1 is a substituted or unsubstituted aryl group, is developed with high contrast by the use of an aqueous alkaline developer having a pH value of 10.5to 12.3 and comprising the following components (1) through (5):
(1) a dihydroxybenzene type developing agent; (2) a p-aminophenol type developing agent; (3) at least 0.3 mol/l of a sulfite preservative; (4) 0.05 to 0.30 mol/l of an alkanolamine of the general formula (II):
where R 2 is a hydroxyalkyl group having 2 to 10 carbon atoms; and ( 5 ) 10- 4 to 10 -2 mol/l of a mercapto compound of the general formula (III);
where M 1 and M 2 are the same or different and each is a hydrogen atom, an alkali metal atom or an ammonium group; whereby a negative image of high contrast may be formed on said photographic material.
wherein R 1 is a substituted or unsubstituted aryl group, is developed with high contrast by the use of an aqueous alkaline developer having a pH value of 10.5to 12.3 and comprising the following components (1) through (5):
(1) a dihydroxybenzene type developing agent; (2) a p-aminophenol type developing agent; (3) at least 0.3 mol/l of a sulfite preservative; (4) 0.05 to 0.30 mol/l of an alkanolamine of the general formula (II):
where R 2 is a hydroxyalkyl group having 2 to 10 carbon atoms; and ( 5 ) 10- 4 to 10 -2 mol/l of a mercapto compound of the general formula (III);
where M 1 and M 2 are the same or different and each is a hydrogen atom, an alkali metal atom or an ammonium group; whereby a negative image of high contrast may be formed on said photographic material.
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