| 摘要 |
PURPOSE:To improve sensitivity to the light of a near IR region by incorporating a specific bisazo compd. into a photosensitive layer. CONSTITUTION:The bisazo pigment expressed by the formula I is incorporated as a carrier generating layer in the photosensitive layer. In the formula I, Ar1, Ar2 respectively denote an (un)substd. phenyl or naphthyl and Ar3 denotes an (un)substd. arom. heterocyclic ring or arom. carbon ring. The substituents of Ar1-Ar3 include a halogen and lower alkyl and the embodiment of the formula I includes the compd. expressed by the formula II. The photosensitive body having the good electrostatic charge characteristic and photosensitivity and the high sensitivity particularly to the light of the near IR region is obtd. if the bisazo compd. expressed by the formula I is incorporated into the photosensitive layer. |
