JP2007187728A5 - - Google Patents

Claims (7)

On a conductive support, an electrophotographic photosensitive member having a layer structure including a photosensitive layer,
The layer structure has a polycyclic aromatic compound,
The polycyclic aromatic compound is composed of 2 to 6 molecular groups selected from the group consisting of the following molecular groups (A) to (D) , and from the following molecular groups (B) to (D): One or more molecular groups selected from the group consisting of:
An electrophotographic photosensitive member characterized by the above.

(In formula , Z < ²¹ >, Z < ²² >, Z < ³¹ >, Z <^32> , Z <^41> and Z <^42> are respectively independently an oxygen atom, C (CN) ₂ , N-R, C (CN) COR, C (CN). COOR, shows the C (CN) R or C _{(COOR) 2.} R is shows the substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl ^{group. X 11, X 12, X} 13, X 14 , at least one of ^{X 15} and ^{X 16,} at least one of ^{X 21, X 22, X 23} , X 24, X 25 and ^{X 26, X 31, X 32} , X 33, X 34, X 35 and ^{X 36} at least one and at least one of ^{X 41, X 42, X 43} , X 44, X 45, X 46, X 47 and ^{X 48} are consolidated group, otherwise, each independently, a hydrogen atom , Halogen atom, nitro group, Perfluoroalkyl group, a hydroxyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.) The layer structure, an intermediate layer provided between the photosensitive layer and the conductive support and the photosensitive layer, the intermediate layer further comprises an intermediate layer containing the polycyclic aromatic compound The electrophotographic photosensitive member according to claim 1 . The polycyclic aromatic compound, comprising said molecular group (A) to 2 or more different molecular group selected from the group consisting of (D), the electrophotographic photosensitive member according to claim 1 or 2. The photosensitive layer is a photosensitive layer formed by laminating a charge transporting layer in this order, containing a charge generation layer and a charge transport material comprising a charge generating material, the charge generating layer, the polycyclic aromatic compound containing an electrophotographic photosensitive member of any crab of claims 1 to 3. The multi-content of the aromatic compound is 10 wt% to 50 wt% of the charge generating material, an electrophotographic photosensitive member according to claim 4 in the charge generating layer. An electrophotographic photosensitive member of any crab of claims 1 to 5, charging means, and at least one means that is selected from the group consisting of the developing means and cleaning means integrally supported, in an electrophotographic apparatus main body A process cartridge that is detachable. The electrophotographic photosensitive member any crab of claims 1 to 5, a charging means, an exposure means, the electrophotographic apparatus, characterized in that it comprises a developing means and a transfer means.