Abstract: An electrophotographic belt having a layered structure with excellent scratch resistance and excellent adhesion of layers to each other. The electrophotographic belt includes a first layer and a second layer directly covering any one of the inner peripheral surface and the outer peripheral surface of the first layer, the first layer containing a first polyester resin, and the second layer containing a second polyester resin and an acrylic resin that contains a carboxy group in its molecule.

Abstract: An electrophotographic member capable of further reducing adhesion of a toner to an outer surface. The electrophotographic member comprises a base layer and a surface layer laminated in this order in a thickness direction of the electrophotographic member, the surface layer containing a binder resin, perfluoropolyether, and an ionic liquid, a content of the perfluoropolyether with respect to the binder resin being 20% by mass or more and 100% by mass or less, and a contact angle of a surface on a side of the surface layer that is opposite to a side facing the base layer with respect to hexadecane being 65° or more.

Abstract: Providcd is anAn electrophotographic belt having a layered structure with excellent scratch resistance and excellent adhesion of layers to each other. The electrophotographic belt includes a first layer and a second layer directly covering any one of the inner peripheral surface and the outer peripheral surface of the first layer, the first layer containing a first polyester resin, and the second layer containing a second polyester resin and an acrylic resin that contains a carboxy group in its molecule.

Abstract: An electrophotographic member capable of further reducing adhesion of a toner to an outer surface. The electrophotographic member comprises a base layer and a surface layer laminated in this order in a thickness direction of the electrophotographic member, the surface layer containing a binder resin, perfluoropolyether, and an ionic liquid, a content of the perfluoropolyether with respect to the binder resin being 20% by mass or more and 100% by mass or less, and a contact angle of a surface on a side of the surface layer that is opposite to a side facing the base layer with respect to hexadecane being 65° or more.

Abstract: An electrophotographic belt including an electro-conductive layer having high adhesion to a base layer while maintaining high electro-conductivity. The electrophotographic belt has an endless shape, and includes an endless shaped base layer containing a polyester resin, and an electro-conductive layer covering an inner surface of the base layer, the electro-conductive layer containing an electro-conductive particle and a binder resin, and the binder resin containing a polyester resin having at least two monomer units of phthalic acids selected from the group consisting of terephthalic acid, orthophthalic acid and isophthalic acid.

Abstract: An electrophotographic belt that, despite long-term usage, is not susceptible to unevenness in cleaning by a cleaning blade in a width direction. The electrophotographic belt has an endless shape and has grooves on an outer circumferential surface thereof, the grooves each extending in a circumferential direction of the electrophotographic belt, when equally dividing a groove-formed area of the outer circumferential surface into three areas in a direction orthogonal to the circumferential direction of the electrophotographic belt, and calculating average values of depths of the grooves contained in the three areas respectively to obtain Dm, De1 and De2, where Dm is an average value of depths of the grooves in a central area, De1 and De2 are average values of depths of the grooves contained in both ends areas, Dm, De1 and De2 satisfy equations (1) and (2): Dm<De1??(1) Dm<De2??(2).

Abstract: An electrophotographic belt including an electro-conductive layer having high adhesion to a base layer while maintaining high electro-conductivity. The electrophotographic belt has an endless shape, and includes an endless shaped base layer containing a polyester resin, and an electro-conductive layer covering an inner surface of the base layer, the electro-conductive layer containing an electro-conductive particle and a binder resin, and the binder resin containing a polyester resin having at least two monomer units of phthalic acids selected from the group consisting of terephthalic acid, orthophthalic acid and isophthalic acid.

Abstract: Provided an electrophotographic belt that, despite long-term usage, is not susceptible to unevenness in cleaning by a cleaning blade in a width direction.

Abstract: Provided is an electrophotographic belt having excellent creep resistance and digital reproducibility. The electrophotographic belt is composed of a biaxially stretched cylindrical film, and the film includes a matrix including a thermoplastic resin and an electroconductive domain including an ionic electroconductive agent, and when a surface resistivity of the film in a circumferential direction is defined as A, and a surface resistivity of the film in a direction orthogonal to the circumferential direction is defined as B, A?B is satisfied, and a tensile modulus of elasticity of the film in the circumferential direction is 1.0 GPa or more and 3.0 GPa or less.

Abstract: Provided is an electrophotographic belt having excellent creep resistance and digital reproducibility. The electrophotographic belt is composed of a biaxially stretched cylindrical film, and the film includes a matrix including a thermoplastic resin and an electroconductive domain including an ionic electroconductive agent, and when a surface resistivity of the film in a circumferential direction is defined as A, and a surface resistivity of the film in a direction orthogonal to the circumferential direction is defined as B, A?B is satisfied, and a tensile modulus of elasticity of the film in the circumferential direction is 1.0 GPa or more and 3.0 GPa or less.

Abstract: Provided is an electrophotographic belt sustainably excellent in toner removal performance. The electrophotographic belt has an endless shape and has grooves on an outer surface thereof, each of the grooves extending in a circumferential direction and being in non-parallel with the circumferential direction, and the outer surface is composed only of a first region in which the number of the grooves in a direction orthogonal to the circumferential direction is “n” and a second region in which the number of the grooves in the direction orthogonal to the circumferential direction is larger than the “n”, the first region and the second region being arranged alternately in the circumferential direction, and the “n” being an integer of 1 or more.

Abstract: Provided is an electrophotographic belt sustainably excellent in toner removal performance. The electrophotographic belt has an endless shape and has grooves on an outer surface thereof, each of the grooves extending in a circumferential direction and being in non-parallel with the circumferential direction, and the outer surface is composed only of a first region in which the number of the grooves in a direction orthogonal to the circumferential direction is “n” and a second region in which the number of the grooves in the direction orthogonal to the circumferential direction is larger than the “n”, the first region and the second region being arranged alternately in the circumferential direction, and the “n” being an integer of 1 or more.

Abstract: An electrophotographic belt with the occurrence frequency of convex portions derived from zirconium-containing compound that cause scratches on a photosensitive drum being suppressed as much as possible is provided. The electrophotographic belt has a resin layer comprising a melt-kneaded product comprising a thermoplastic polyester resin, a polyether ester amide, and a zirconium-containing compound, wherein the number of convex portions derived from the zirconium-containing compound per unit area (1.0 m2) on the outer surface of the electrophotographic belt is 10 pieces or less.

Abstract: Provided is an electro-conductive belt including an electro-conductive resin layer. The electro-conductive resin layer includes a matrix containing a thermoplastic resin having at least one bond selected from the group consisting of an amide bond, an ester bond and a carbonate bond, a domain containing an ionic liquid containing a hexafluorophosphate anion or an anion expressed by formula (1), and particles containing a silicone resin having a structure expressed by formula (2): R0—SiO3/2.

Abstract: Concerned with a cylindrical conductive belt for electrophotography which has made permanent curl less occur. The conductive belt has a continuous phase containing a thermoplastic polyester resin and discontinuous phases each containing any one or both selected from a polyether-ester amide and a polyether amide, and the discontinuous phases are present in such way as to extend in the peripheral direction of the belt; the belt having a crystallinity that is lower on the outer-peripheral surface side than on the inner-peripheral surface side.

Abstract: A high-quality electrophotographic endless belt and a method capable of efficiently producing the belt are provided. A method for producing an electrophotographic endless belt comprising a base layer including a thermoplastic resin composition and an inner-surface layer, which includes: (1) forming an energy curable film having a glass transition temperature on an inner surface of a test tube-shaped preform including a thermoplastic resin and then subjecting the preform to blow molding to obtain a blow-molded bottle; (2) irradiating the blow-molded bottle with energy rays to cure the film to form an inner-surface layer; and (3) cutting out an endless belt from the blow-molded bottle having the inner-surface layer obtained in (2).

Abstract: An electrophotographic member capable of maintaining stable quality regardless of environment in forming a surface layer is provided. The electrophotographic member includes a base layer and a surface layer. The surface layer includes a heteroaggregate of inorganic oxide particles, electro-conductive metal oxide particles different from the inorganic oxide particles, and an ionic liquid.

Abstract: An electrophotographic belt which enables the suppression of bleeding of an electrolyte while minimizing influence on its surface smoothness. The electrophotographic belt showing electroconductivity resulting from dissociation of an electrolyte is made of a resin composition containing a crystalline resin as a binder resin, an oil-soluble dye and an electrolyte.

Abstract: A high-quality electrophotographic endless belt and a method capable of efficiently producing the belt are provided. A method for producing an electrophotographic endless belt comprising a base layer including a thermoplastic resin composition and an inner-surface layer, which includes: (1) forming an energy curable film having a glass transition temperature on an inner surface of a test tube-shaped preform including a thermoplastic resin and then subjecting the preform to blow molding to obtain a blow-molded bottle; (2) irradiating the blow-molded bottle with energy rays to cure the film to form an inner-surface layer; and (3) cutting out an endless belt from the blow-molded bottle having the inner-surface layer obtained in (2).

Abstract: Provided is an electro-conductive belt including an electro-conductive resin layer. The electro-conductive resin layer includes a matrix containing a thermoplastic resin having at least one bond selected from the group consisting of an amide bond, an ester bond and a carbonate bond, a domain containing an ionic liquid containing a hexafluorophosphate anion or an anion expressed by formula (1), and particles containing a silicone resin having a structure expressed by formula (2): R0—SiO3/2.