Photoconductive layers containing a mixture of at least two different organic photoconductors and electrophotographic elements comprising said layers
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0011980A1
公开(公告)日:1980-06-11
The problem of crystallization of organic photoconductive compounds in insulating binder-containing layers, which may impair the capability of those layers to produce high- resolution images, is overcome by using as the photoconductor a mixture comprising at least two compounds of the formula:
wherein R is an alkyl, substituted alkyl, aralkyl, aryl or substituted aryl group;
each of X, X', Y, and Y', which may be the same or different, is hydrogen, alkyl, substituted alkyl, alkoxy, substituted alkoxy, hydroxyl, nitro or halogen;
each of A and 8, which may be the same or different, is hydrogen, alkyl, substituted alkyl, alkoxy, substituted alkoxy, hydroxyl, halogen, unsubstituted or substituted aryl, cycloalkyl having four to ten carbon atoms and cycloalkenyl having four to eight carbon atoms; or
A and B taken together represent atoms which form with the carbon to which they are attached a substituted or unsubstituted carbocyclic ring having from 4 to 10 atoms, any alkyl, substituted alkyl, alkoxy or substituted alkoxy substituent having from 1 to 10 carbon atoms and any aryl or substituted aryl group being an unsubstituted or substituted phenyl, naphthyl or anthryl group, any substituent in a substituted aryl group being an amino, alkylamino, or dialkylamino group or a substituent as defined for X, X', Y and Y'.
有机光电导化合物在含绝缘粘合剂的层中结晶,可能会影响这些层产生高分辨率图像的能力,这一问题可通过使用至少由两种式化合物组成的混合物作为光电导体来解决:
其中 R 是烷基、取代烷基、芳基、芳基或取代芳基;
X、X'、Y 和 Y'(可以相同或不同)各自是氢、烷基、取代烷基、烷氧基、取代烷氧基、羟基、硝基或卤素;
A 和 8(可以相同或不同)各自是氢、烷基、取代的烷基、烷氧基、取代的烷氧基、羟基、卤素、未取代或取代的芳基、具有四至十个碳原子的环烷基和具有四至八个碳原子的环烯基;或
A 和 B 合在一起代表与所连接的碳形成具有 4 至 10 个原子的取代或未取代碳环的原子,任何具有 1 至 10 个碳原子的烷基、取代烷基、烷氧基或取代烷氧基取代基,任何芳基或取代芳基为未取代或取代苯基、萘基或蒽基,取代芳基中的任何取代基为氨基、烷基氨基或二烷基氨基,或如 X、X'、Y 和 Y' 所定义的取代基。