Electrophotographic receptor

Abstract

Abstract PURPOSE: To obtain a photoreceptor superior in charging performance, photosensitivity, image characteristics, and printing resistance and free from fatigue deterioration especially in a transfer repeating system, by adding a specified fluorene derivative bisazo compound to a photoconductive layer. CONSTITUTION: To thin layer 2 formed on conductive substrate 1 of the lamination type electrophotographic receptor consisting of charge generating layer 2 and charge transfer layer 3 is added especially as layer 2 a bisazo compound represented by formula I in which A 1 , A 2 are each an aromatic hydrocarbon optionally substituted by NO 2 , CN, halogen, carboxy, alkoxy, alkyl, dimethylamino, or the like; R 1 is H or 1W4C alkyl; R 2 is H, optionally substituted amino, 1W4C alkyl, carbamoyl, carboxy, or its ester; R 3 , R 4 are each an optionally substituted alkyl; and A is formula II, III, IV, or V. Durability is enhanced more effectively by laminating layer 3 on layer 2 than by doing vice versa in using a transfer repeating type electrostatic recorder. This compound may be used by dispersing it into layer 3. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Nobuaki Kagawa
• 👤 Satoshi Goto
• 👤 Noboru Fujimori

Bibliographic Details