Abstract: A photosensitive layer of an electrophotographic photosensitive member contains a hydroxygallium phthalocyanine crystal of a crystalline form having peaks at Bragg angles 2?±0.2° of 7.0°, 16.6°, 20.8°, and 26.9° in X-ray diffraction with CuK? radiation.

Abstract: A solution of a gallium phthalocyanine contains a compound of formula (1) and a gallium phthalocyanine of formula (2), H2N—CH2—R1—CH2—NH2??(1) wherein R1 represents a single bond, or a substituted or unsubstituted alkylene group having 1 to 10 main-chain carbon atoms, a substituent of the substituted alkylene group is an alkyl group having 1 to 3 carbon atoms, an alkyl group having 1 to 3 carbon atoms and being substituted with an amino group, or a hydroxy group, one of the carbon atoms in the main chain of the alkylene group may be replaced with an oxygen atom, a sulfur atom, or a bivalent group represented by the formula —NR2—, and R2 represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or an alkyl group having 1 to 3 carbon atoms and being substituted with an amino group, and wherein X1 represents a chlorine atom or hydroxy group.

Abstract: In an electrophotographic photosensitive member including a charge-generating layer, the charge-generating layer has a matrix-domain structure; in the matrix-domain structure, the domain contains a charge-generating substance, and the matrix contains a binder resin and a fluoranthene compound.

Abstract: An electrophotographic photosensitive member having a surface layer which contains a silicon-containing compound in an amount of less than 0.6% by mass based on the whole solid content in the surface layer, where the silicon-containing compound in the surface layer has a siloxane moiety in an amount of 0.01% by mass or more, based on the whole solid content in the surface layer, and its surface has specific depressions. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member.

Abstract: A photosensitive layer or a charge generation layer of an electrophotographic photosensitive member contains a gallium phthalocyanine and a particular diamine compound such as 1,2-diaminoethane or 1,3-diaminopropane. The content of the particular diamine compound in the photosensitive layer or the charge generation layer is from 10 ppm to 1,000 ppm (mass ratio) based on the gallium phthalocyanine.

Abstract: A solution of a gallium phthalocyanine contains a compound of formula (1) and a gallium phthalocyanine of formula (2), H2N—CH2—R1—CH2—NH2??(1) wherein R1 represents a single bond, or a substituted or unsubstituted alkylene group having 1 to 10 main-chain carbon atoms, a substituent of the substituted alkylene group is an alkyl group having 1 to 3 carbon atoms, an alkyl group having 1 to 3 carbon atoms and being substituted with an amino group, or a hydroxy group, one of the carbon atoms in the main chain of the alkylene group may be replaced with an oxygen atom, a sulfur atom, or a bivalent group represented by the formula —NR2—, and R2 represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or an alkyl group having 1 to 3 carbon atoms and being substituted with an amino group, and wherein X1 represents a chlorine atom or hydroxy group.

Abstract: In an electrophotographic photosensitive member including a support, and a photosensitive layer formed on the support, a surface layer of the electrophotographic photosensitive member includes specific resin (?), resin (?) and compound (?).

Abstract: Provided is a method of producing an electrophotographic photosensitive member including a support and a surface layer formed on the support, the method including the steps of forming a coat of a surface-layer coating solution, and drying the coat to form the surface layer, in which the surface-layer coating solution includes resin ?, resin ?, solvent ?, and compound ?.

Abstract: The present invention provides an electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus, each of which has the electrophotographic photosensitive member. In the electrophotographic photosensitive member, a charge transport layer used as a surface layer contains a charge transport material, a polycarbonate resin A which has a specific amount of a specific repeating structural unit of a specific siloxane moiety, and a polyester resin C and/or a polycarbonate resin D, each of which has a specific repeating structural unit. In the charge transport layer, a matrix-domain structure is formed in which a matrix is formed from the charge transport material and the polyester resin C and/or the polycarbonate resin D, and domains are formed in the above matrix from the polycarbonate resin A.

Abstract: The electrophotographic photosensitive member includes a surface layer containing (?), (?) and (?).

Abstract: An electrophotographic photosensitive member in which image deletion is hardly produced, and a process cartridge and electrophotographic apparatus having the electrophotographic photosensitive member are provided. For this, a surface of the electrophotographic photosensitive member includes a plurality of depressed portions and a portion other than the depressed portions, each of the depressed portions having a depth of 0.5 to 5 ?m and an opening longest diameter of 20 to 80 ?m; when a 500 ?m×500 ?m square region is disposed in an arbitrary position of the surface of the electrophotographic photosensitive member, the area of the depressed portions in the 500 ?m×500 ?m square region is from 10000 to 90000 ?m2, and the area of a flat part contained in the portion other than the depressed portions is from 80000 to 240000 ?m2.

Abstract: A charge-generating layer of an electrophotographic photosensitive member includes a phthalocyanine pigment and a specific tricyanoethylene compound. Alternatively, the charge-generating layer and/or an undercoat layer of the electrophotographic photosensitive member includes a specific tricyanoethylene compound, and the charge-generating layer includes the phthalocyanine pigment.

Abstract: A photosensitive layer of an electrophotographic photosensitive member includes a phthalocyanine pigment and a specific dicyanoethylene compound. Alternatively, the photosensitive layer and/or an undercoat layer of the electrophotographic photosensitive member include a specific dicyanoethylene compound, and the photosensitive layer includes the phthalocyanine pigment.

Abstract: The present invention provides a method for producing an electrophotographic photosensitive member including a surface layer, the method including the steps of: forming a coat for the surface layer on the support by applying a surface-layer coating solution and forming the surface layer by drying the coat, wherein the surface-layer coating solution includes a resin ?, a resin ?, a solvent ? and a compound ?.

Abstract: In the cross-section perpendicular to the axis of rotation of the electrophotographic photosensitive member, when an arc which is a line at the intersection of the cross-section with a contacting face (face where the electrophotographic photosensitive member and the molding member contact), is represented by an arc AB, the center of a circle of the cross-section of the electrophotographic photosensitive member is represented by a center O, and the point at the intersection of a straight line via the center O among straight lines of a direction of the pressure contact of the molding member with the arc AB is represented by an intersection C, the uneven structure on the surface of the molding member transfers to the surface of the electrophotographic photosensitive member so that ?AOC and ?BOC satisfy the following formulas (1) and (2), respectively: 0.5°??AOC?45°??(1), and 0.5°??BOC?45°??(2).

Abstract: In the case where an uneven structure is formed on the surface of cylindrical electrophotographic photosensitive members, for the purpose of reducing the variation of the uneven structure between the individual cylindrical electrophotographic photosensitive members even when a large number of cylindrical electrophotographic photosensitive members are continuously processed, an insert is inserted into the interior of a cylindrical electrophotographic photosensitive member including a cylindrical substrate and a surface layer, the surface uneven structure of a molding member is transferred to and formed on the surface of the surface layer of the photosensitive member. The insert includes an abutting part having an outer peripheral surface capable of abutting on the inner peripheral surface of the substrate, a connecting part positioned inside of the abutting part in the radical direction and a shaft part positioned inside of the connecting part in the radical direction.

Abstract: The present invention provides a method for producing an electrophotographic photosensitive member including a surface layer, the method including the steps of: forming a coat for the surface layer on the support by applying a surface-layer coating solution and forming the surface layer by drying the coat, wherein the surface-layer coating solution includes a resin ?, a resin ?, a solvent ? and a compound ?.

Abstract: The electrophotographic photosensitive member includes a surface layer containing (?), (?) and (?).

Abstract: The present invention provides an electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus, each of which has the electrophotographic photosensitive member. In the electrophotographic photosensitive member, a charge transport layer used as a surface layer contains a charge transport material, a polycarbonate resin A which has a specific amount of a specific repeating structural unit of a specific siloxane moiety, and a polyester resin C and/or a polycarbonate resin D, each of which has a specific repeating structural unit. In the charge transport layer, a matrix-domain structure is formed in which a matrix is formed from the charge transport material and the polyester resin C and/or the polycarbonate resin D, and domains are formed in the above matrix from the polycarbonate resin A.

Abstract: An electrophotographic photosensitive member having a surface layer which contains a silicon-containing compound in an amount of less than 0.6% by mass based on the whole solid content in the surface layer, where the silicon-containing compound in the surface layer has a siloxane moiety in an amount of 0.01% by mass or more, based on the whole solid content in the surface layer, and its surface has specific depressions. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member.