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1. 发明公开

EP1022612A1 Color photographic element containing a fragmentable electron donor 审中-公开
标题翻译： Einen fragmentierbaren Elektronendonor enthaltendes farbphotographsches元素
公开(公告)号：EP1022612A1
公开(公告)日：2000-07-26
申请号：EP00200118.8
申请日：2000-01-13
申请人： EASTMAN KODAK COMPANY
发明人： Friday, James A. Patent Legal Staff , Pepe, Joseph P. Patent Legal Staff , Hansen, Jeffrey C. Patent Legal Staff , Muenter, Annabel A. Patent Legal Staff , Lenhard, Jerome R. Patent Legal Staff
IPC分类号： G03C7/30 , G03C1/10 , G03C1/005
CPC分类号： G03C7/3022 , G03C1/0051 , G03C1/10 , G03C2001/03594 , G03C2200/24
摘要： This invention comprises a multicolor photographic element comprising a support bearing a cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler,wherein at least one of said layers comprises large tabular grains having an average circular diameter of greater than 2 µm and contains a fragmentable electron donating compound is of the formula: X-Y' or a compound which contains a moiety of the formula -X-Y';
wherein

X is an electron donor moiety, Y' is a leaving proton H or a leaving group Y, with the proviso that if Y' is a proton, a base, β - , is covalently linked directly or indirectly to X, and wherein:

1) X-Y' has an oxidation potential between 0 and about 1.4 V; and
2) the oxidized form of X-Y' undergoes a bond cleavage reaction to give the radical X · and the leaving fragment Y';
and, optionally,
3) the radical X · has an oxidation potential ≤-0.7V (that is, equal to or more negative than about -0.7V).
摘要翻译：本发明包括一种多色照相元件，其包含支持青色染料成像单元的载体，该单元包括至少一种与其相关联的至少一种形成青色染料的成色剂的感红卤化银乳剂层，品红染料影像形成单元包括至少一个感绿卤化银乳剂层，其与至少一种品红色染料形成成色剂相关联，黄色染料影像形成单元，其包含至少一种感蓝卤化银乳剂层，其与其相关联的至少一种形成黄色染料的成色剂，其中所述层中的至少一个包括平均圆形直径大于2μm的大片状颗粒，并且含有可裂解的给电子化合物具有下式：XY'或含有式-X-的部分的化合物， Y'; 其中X是电子给体部分，Y'是离开质子H或离去基团Y，条件是如果Y'是质子，则基团β - 直接或间接地共价连接到X和其中：1）XY'具有介于0和约1.4V之间的氧化电位; 和2）X-Y'的氧化形式经历键断裂反应，得到基团X'和离去片段Y'; 和任选地3）基团X'具有≤-0.7V的氧化电位（即，等于或大于约-0.7V的负）。

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