摘要:
A photosensitive material for electrophotography having high sensitivity and excellent durability, which comprises a photosensitive layer containing at least one of azo compounds having a tetraphenylthiophene or tetraphenylthiophene 1,1-dioxide skeleton.
摘要:
A novel electrophotographic photoreceptor is provided comprising on an electrically conductive support a layer containing a charge-transporting compound and a charge-generating compound or a charge-transporting compound-containing layer and a charge-generating compound-containing layer, characterized in that as said electric charge-generating compound there is contained a tetrakisazo compound represented by the general formula (1): wherein Ar¹, Ar², Ar³, Ar⁴, Ar⁵, Ar⁶ and Ar⁷ each represents an arylene group, divalent condensed polycyclic aromatic group or divalent heterocyclic aromatic group; and Cp represents a coupler residue.
摘要:
An electrophotographic photoreceptor is provided with a photosensitive layer, which contains an azo compound having in the molecule thereof at least one azo group coupled with a coupler residuum represented by the following general formula (I): wherein X means a residuum capable of condensing with a benzene ring to form a substituted or unsubstituted aromatic hydrocarbon ring or a substituted or unsubstituted aromatic heterocyclic ring, Y denotes a hydrogen or halogen atom or an alkyl or alkoxy group, and n stands for an integer of 0 - 3.
摘要:
An electrophotographic photoreceptor according to this invention has a photosensitive layer in which a photoconductive substance with the following general formula (I): wherein
X ist selected from the group consisting of hydrogen atom, lower alkyl group, lower alkoxy group, halogen atom and cyano group; Y is phenylene or naphthylene group; Z, and Z 2 are independently the divalent group represented by the following formula: wherein A is a divalent group derived from the aromatic hydrocarbon or heterocyclic compound including one or more nitrogen atoms in the ring; and n is 1 or 2, is incorporated.