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    • 124. 发明专利
    • ELECTROPHOTOGRAPHIC SENSITIVE BODY
    • JPH049959A
    • 1992-01-14
    • JP11350790
    • 1990-04-27
    • RICOH KK
    • SUZUKI YASUO
    • G03G5/05C07C323/20C07D335/06
    • PURPOSE:To obtain the electrophotographic sensitive body which has excellent ozone resistance and excellent electrostatic charge stability in spite of repetitive use, obviates an increase in residual potential and forms good images by incorporating the compds. expressed by prescribed formulas into a photosensitive layer. CONSTITUTION:This photosensitive body is constituted by incorporating at least one kind of the compds. expressed by the formula I or II into the photosensitive layer. In the formula I, R1 to R4 respectively denote a hydrogen atom, halogen atom, hydroxy group, substd. or unsubstd. alkyl group, the same aryl group, the same cylcoalkyl group, the same alkoxy group, the same aryloxy group, substd. amino group, imino group, heterocyclic group, substd. or unsubstd. alkylthio group, or arylthio group, sulfoxide group, sulfonyl group, acyl group, azo group. In the formula II, R1 to R8 are respectively the same as the formula I and denote, in addition, a carboxyl group or carbonyl group. The photosensitive body which forms the good images in spite of the repetitive use and has the long life and high reliability is obtd.