申请人:Mitsubishi Paper Mills Limited
公开号:US05219689A1
公开(公告)日:1993-06-15
The invention provides an electrophotographic photoreceptor of high sensitivity and high endurance which comprises a conductive support and a light-sensitive layer which contains at least one bis-azo compound selected from the group consisting of those represented by the following formulas (I)-(II): ##STR1## wherein n represents 0, 1, or 3; R.sup.1 represents a halogen atom, a hydroxyl group, or an alkyl, aralkyl, aryl, hyterocyclic or alkoxy group which may have a substituent and when n is 2 or 3, R.sup.1 may be identical or different; R.sup.2 represents a hydrogen atom, a halogen atom, a cyano group, or an ester, alkyl, aralkyl or aryl group which may have a substituent; R.sup.3 represents an alkyl, aralkyl, aryl or heterocyclic group which may have a substituent; Ar represents an arylene which may have a substituent; and A.sup.1 and A.sup.2 each represents an aryl or heterocyclic group which has a hydroxyl group and may be identical or different.
本发明提供了一种高灵敏度和高耐久性的电子照相感光鼓,包括导电支撑和一层光敏层,该光敏层包含至少一种双偶氮化合物,所选的双偶氮化合物来自以下公式(I)-(II)组成的群体中的至少一种: ##STR1## 其中n表示0、1或3;R.sup.1表示卤素原子、羟基或烷基、芳基、杂环基或烷氧基,可以具有取代基,当n为2或3时,R.sup.1可以相同或不同;R.sup.2表示氢原子、卤素原子、氰基或酯基、烷基、芳基或芳烃基,可以具有取代基;R.sup.3表示烷基、芳基、杂环基或取代基;Ar表示可以具有取代基的芳基;A.sup.1和A.sup.2各自表示具有羟基的芳基或杂环基,可以相同或不同。