发明授权
US6013428A Color photographic recording material having a 2-equivalent magenta
coupler and a white coupler
失效
具有2-当量品红色耦合器和白色耦合器的彩色照相记录材料
- 专利标题: Color photographic recording material having a 2-equivalent magenta coupler and a white coupler
- 专利标题(中): 具有2-当量品红色耦合器和白色耦合器的彩色照相记录材料
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申请号: US891391申请日: 1997-07-11
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公开(公告)号: US6013428A公开(公告)日: 2000-01-11
- 发明人: Hans Langen , Heinrich Odenwalder , Uwe Dahlhaus
- 申请人: Hans Langen , Heinrich Odenwalder , Uwe Dahlhaus
- 申请人地址: DEX Leverkusen
- 专利权人: Agfa-Gevaert AG
- 当前专利权人: Agfa-Gevaert AG
- 当前专利权人地址: DEX Leverkusen
- 优先权: DEX19629142 19960719
- 主分类号: C07C69/757
- IPC分类号: C07C69/757 ; G03C7/30 ; G03C7/392 ; G03C7/333
摘要:
A colour photographic recording material having at least one red-sensitive silver halide emulsion layer which is associated with a cyan coupler, at least one green-sensitive silver halide emulsion layer which is associated with a magenta coupler, at least one blue-sensitive silver halide emulsion layer which is associated with a yellow coupler contains in at least one green-sensitive silver halide emulsion layer a 2-equivalent pyrazolone coupler and in a photosensitive or non-photosensitive layer a white coupler of the formula (I) ##STR1## in which X.sup.1 means an acyl residue derived from an aliphatic, cycloaliphatic or aromatic carboxylic or sulphonic acid, a carbonic acid semi-ester or a carbamic acid,Z means the residue required to complete a saturated or partially unsaturated 5- or 6-membered carbocyclic ring which is optionally substituted and/or provided with a further fused ring or ring system.The colour images produced using the recording material exhibit elevated storage stability without a subsequent increase in fog or a subsequent increase in colour density or spotting occurring during storage.
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