Electrophotographic photosensitive member process cartridge and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsMasato Tanaka, Hideyuki Takai
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Abstract
An electrophotographic photosensitive member is disclosed which has a support and a photosensitive layer and is exposed to semiconductor laser light having a wavelength of from 380 nm to 500 nm. The photosensitive layer contains a gallium phthalocyanine compound, or an oxytitanium phthalocyanine compound having a strong peak at 27.2° plus-minus 0.2° of the diffraction angle in CuKα characteristic X-ray diffraction. Also, disclosed are a process cartridge and an electrophotographic apparatus making use of the photosensitive member.
Claims27
An electrophotographic photosensitive member comprising a support and a photosensitive layer provided thereon, said photosensitive layer being sensitive to semiconductor laser light having a wavelength of from 380 nm to 500 nm;
- said photosensitive layer containing a gallium phthalocyanine compound, or an oxytitanium phthalocyanine compound having a strong peak at 27.2° plus-minus 0.2° of the diffraction angle in CuKα characteristic X-ray diffraction.
A process cartridge comprising an electrophotographic photosensitive member and a means selected from the group consisting of a charging means, a developing means and a cleaning means;
- said electrophotographic photosensitive member and at least one of said means being supported as one unit and being detachably mountable to the main body of an electrophotographic apparatus;
- and
- said electrophotographic photosensitive member comprising a support and a photosensitive layer provided thereon, said photosensitive layer being sensitive to semiconductor laser light having a wavelength of from 380 nm to 500 nm;
- said photosensitive layer containing a gallium phthalocyanine compound, or an oxytitanium phthalocyanine compound having a strong peak at 27.2° plus-minus 0.2° of the diffraction angle in CuKα characteristic X-ray diffraction.
An electrophotographic apparatus comprising an electrophotographic photosensitive member, a charging means, an exposure means, a developing means and a transfer means;
- said exposure means having a semiconductor laser having an oscillation wavelength of from 380 nm to 500 nm as an exposure light source;
- and
- said electrophotographic photosensitive member comprising a support and a photosensitive layer provided thereon;
- said photosensitive layer containing a gallium phthalocyanine compound, or an oxytitanium phthalocyanine compound having a strong peak at 27.2° plus-minus 0.2° of the diffraction angle in CuKα characteristic X-ray diffraction.
Dependencies are inferred from the claim text.