摘要:
An electrophotographic photosensitive member capable of forming images with less defects, such as ghost, while retaining a high photo-sensitivity, is provided. The photosensitive member includes a support and a photosensitive layer disposed on the support, wherein said photosensitive layer contains a phthalocyanine pigment and an azo calix[n]arene compound represented by the 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.
摘要:
An electrophotographic photosensitive member capable of forming images with less defects, such as ghost, while retaining a high photo-sensitivity, is provided. The photosensitive member includes a support and a photosensitive layer disposed on the support, wherein said photosensitive layer contains a phthalocyanine pigment and an azo calix[n]arene compound represented by the formula (1) below: wherein n denotes an integer of 4-8; R1, R2 and R3 independently denote a hydrogen atom or alkyl group; Ar denotes an aromatic hydrocarbon ring group capable of having a substituent, a heterocyclic group capable of having a substituent, or a combination of a plurality of these groups bonded to each other directly or via a bonding group.
摘要:
An electrophotographic photosensitive member exhibiting a high sensitivity and a potential stability on repetitive use and capable of suppressing image defects, such as black spots in a reversal development scheme, is provided. The photosensitive member includes a support, and a phthalocyanine layer formed on the support and a novel phthalocyanine crystal, which comprises a phthalocyanine compound and a substituted or unsubstituted condensed polycyclic hydrocarbon compound.
摘要:
An electrophotographic photosensitive member exhibiting a high sensitivity and a potential stability on repetitive use and capable of suppressing image defects, such as black spots in a reversal development scheme, is provided. The photosensitive member includes a support, and a phthalocyanine layer formed on the support and a novel phthalocyanine crystal, which comprises a phthalocyanine compound and a substituted or unsubstituted condensed polycyclic hydrocarbon compound.
摘要:
An electrophotographic photosensitive member has a support and a photosensitive layer provided thereon. The photosensitive layer contains a carixarene compound having specific structure. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member.
摘要:
An electrophotographic photosensitive member is constituted by at least a support, a photosensitive layer disposed on the support, and a protective layer disposed on the photosensitive layer. The protective layer comprises a cured product obtained from a condensation product between a silyl acrylate compound and colloidal silica. The protective layer is effective in providing the photosensitive member with improved potential stability against a change in environmental conditions and an excellent durability.
摘要:
An electrophotographic photosensitive member is constituted by a support and a photosensitive layer disposed on the support. The electrophotographic photosensitive member has a surface layer comprising a polyester resin having a recurring unit represented by the following formula (1): wherein A1 represents a substituted or unsubstituted divalent aliphatic hydrocarbon group. The resultant surface layer is effective in improving an abrasive resistance of the photosensitive member.
摘要:
The present invention includes an electrophotographic photosensitive member having a surface layer containing a polyphenylene resin, and a process cartridge and an electrophotographic apparatus both having the electrophotographic photosensitive member.
摘要:
An outer rotor-type multi-pole generator includes a plurality of coils wound around a large number of protruding poles provided around an outer periphery of a stator core through a bobbin, and terminal members fitted into fitting tube portions integrally provided on the bobbin to pass through the stator core over opposite ends of the stator core. Each of the coils is connected to one end of the terminal member. Each of the terminal members includes a flat plate-shaped base portion fitted into the fitting tube portion and a clamping plate portion protruding sideways from one end of the base portion. The end of the coil is connected to the one end of the terminal member by fusing with the clamping plate portion being folded in such a manner that the end of the coil is clamped between the clamping plate portion and one end of the base portion. Thus, the operation for connecting the coils to the terminal members is facilitated, and the number of steps of the connecting operation is reduced.
摘要:
An electrophotographic photosensitive member is disclosed which has an electroconductive support and a photosensitive layer formed thereon. The photosensitive member is electrified by applying voltage to an electrification means brought into contact therewith, and it has higher impedance (.OMEGA..cndot.cm) at an end portion than at other portion of the area where the photosensitive member is allowed to contact with the electrification means. Also, a process cartridge and an electrophotographic apparatus using the photosensitive member are disclosed.