Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

A process cartridge, comprising:

• an electrophotographic photosensitive member and at least one means selected from the group consisting of charging means, developing means and cleaning means;
• said electrophotographic photosensitive member and said at least one means being integrally supported and detachably mountable to a main assembly of an electrophotographic apparatus,
• wherein said electrophotographic photosensitive member comprises a support and a photosensitive layer disposed on the support and containing an azo calix[n]arene compound of formula (1) below:
• wherein n denotes an integer of 4-8;
• a number (n) of R1 independently denote a hydrogen atom or an alkyl group capable of having a substituent and including at least one alkyl group capable of having a substituent;
• a number (2n) of R2 independently denote a hydrogen atom or an alkyl group capable of having a substituent;
• and a number (n) of Ar independently denote a monovalent group selected from an aromatic hydrocarbon ring group capable of having a substituent, a heterocyclic ring group capable of having a substituent, and a combination of these groups capable of having a substituent;
• wherein said photosensitive layer further contains a charge-generating material comprising a phthalocyanine pigment.

An electrophotographic apparatus, comprising:

• an electrophotographic photosensitive member, and charging means, developing means and transfer means respectively disposed opposite to the electrophotographic photosensitive member, wherein said electrophotographic photosensitive member comprises a support and a photosensitive layer disposed on the support and containing an azo calix[n]arene compound of formula (1) below:
• wherein n denotes an integer of 4-8;
• a number (n) of R1 independently denote a hydrogen atom or an alkyl group capable of having a substituent and including at least one alkyl group capable of having a substituent;
• a number (2n) of R2 independently denote a hydrogen atom or an alkyl group capable of having a substituent;
• and a number (n) of Ar independently denote a monovalent group selected from an aromatic hydrocarbon ring group capable of having a substituent, a heterocyclic ring group capable of having a substituent, and a combination of these groups capable of having a substituent;
• wherein said photosensitive layer further contains a charge-generating material comprising a phthalocyanine pigment.