| 摘要 |
PURPOSE:To obtain the titled body having the excellent practical sensitive characteristics and durability, and especially, to obtain a stability of the potential characteristics of the titled body in a repeating usage by providing a photosensitive layer contg. a specific dis-azo pigment on an electroconductive substrate. CONSTITUTION:The optical sensitive layer contg. the dis-azo pigment shown by the formula wherein A is a coupler residue having a phenolic OH group, Ar1 and Ar2 may be substd. and are a phenylene group, a divalent polycyclic or a condensed polycyclic aromatic group or a divalent heterocyclic group, Ar1 and Ar2 can not be both unsubstd. or substd. phenylene group. The coating film contg. the dis-azo pigment displays the photoconductive characteristics, and is suitable to use to the photosensitive layer of the titled body. The coating layer may be formed by vacuum-depositing the dis-azo pigment on the electroconductive substrate or by dispersing the prescribed pigment into a suitable binder to produce the titled body. |
