Abstract: An electrophotographic photosensitive member wherein a charge generating layer of the electrophotographic photosensitive member includes a gallium phthalocyanine crystal in which an organic compound is contained, wherein the organic compound is at least one compound selected from the group consisting of dimethylsulfoxide, N,N-dimethylformamide, N-methylformamide, N-propylformamide, N-vinylformamide and N-methylpyrrolidone, the content of the organic compound is 0.1% by mass or more and 2.0% by mass or less based on a gallium phthalocyanine in the gallium phthalocyanine crystal, and a charge transporting layer of the electrophotographic photosensitive member includes a polycarbonate resin having structural units represented by formulae (1) and (2).

Abstract: A photosensitive layer of an electrophotographic photosensitive member contains a particular chlorogallium phthalocyanine crystal in which an organic compound is contained. The organic compound has a Hansen solubility parameter ?total of 24.0 or more and 35.0 or less, a polar energy ?P of 13.5 or more and 21.0 or less, and a dispersion energy ?D of 15.0 or more and 19.5 or less.

Abstract: An electrophotographic photosensitive member can provide images in which black spots and fogging are suppressed and density unevenness due to coating unevenness of the charge generation layer is suppressed. The charge generation layer of the electrophotographic photosensitive member contains a gallium phthalocyanine crystal, a nitrogen-containing heterocyclic compound, and an amide compound represented by a formula (1), and a nitrogen atom in a heterocyclic ring of the nitrogen-containing heterocyclic compound has a substituent.

Abstract: The present invention can provide an electrophotographic photosensitive member that is capable of suppressing potential variation as much as possible to allow a high-quality image to be output, as well as a process cartridge and an electrophotographic apparatus including the electrophotographic photosensitive member. Therefore, the electrophotographic photosensitive member of the present invention is an electrophotographic photosensitive member comprising: a support; a charge-generating layer; and a charge-transporting layer on the charge-generating layer, in which the charge-generating layer comprises a gallium phthalocyanine crystal in which a polar solvent is contained, and the polar solvent is at least one selected from dimethylsulfoxide, N,N-dimethylformamide, N-methylformamide, N-propylformamide, N-vinylformamide and N-methylpyrrolidone relative to gallium phthalocyanine, and the content of the polar solvent is 0.1% by mass or more and 2.

Abstract: The present invention provides: an electrophotographic photosensitive member which reduces image defects due to ghosting not only under a normal temperature and normal humidity environment but also even under a low temperature and low humidity environment; and a novel phthalocyanine crystal. The electrophotographic photosensitive member of the present invention includes a photosensitive layer which comprises a phthalocyanine crystal in which a dimethyl sulfoxide is contained. The content of the dimethyl sulfoxide is 0.1% by mass or more and 1.7% by mass or less based on the phthalocyanine crystal.

Abstract: The present invention provides: an electrophotographic photosensitive member which reduces image defects due to ghosting not only under a normal temperature and normal humidity environment but also even under a low temperature and low humidity environment; and a novel phthalocyanine crystal. The electrophotographic photosensitive member of the present invention comprises a photosensitive layer which comprises a phthalocyanine crystal in which a N,N-dimethylformamide is contained. The content of the N,N-dimethylformamide is 0.1% by mass or more and 1.5% by mass or less based on the phthalocyanine crystal.