Abstract: A developing member includes a conductive substrate, a conductive elastic layer on the conductive substrate, and a plurality of insulating domains on the conductive elastic layer, wherein the surface of the developing member includes the surfaces of the insulating domains and an exposed portion of the conductive elastic layer not covered with the insulating domains. The conductive elastic layer contains a resin and an anion, wherein the resin has a specific cationic structure synthesized from an ion conductive agent composed of a cation including at least one reactive functional group and an anion and a compound that can react to the ion conductive agent.

Abstract: Provided is a member for electrophotography that enables stable formation of a high-quality electrophotographic image even when used as a developing member over a long period of time. The member for electrophotography includes: a support; an electro-conductive elastic layer on the support; and a plurality of electrically insulating domains on the electro-conductive elastic layer, in which a surface of the member for electrophotography includes surfaces of the electrically insulating domains and an exposed portion of the electro-conductive elastic layer free of being covered by the electrically insulating domains, and in which the electrically insulating domains each contain a resin having a specific structure.

Abstract: Provided is a member for electrophotography that can achieve both an improvement in toner-conveying force under high temperature and high humidity, and excellent charge-providing performance for a toner, at high levels. The member for electrophotography includes a substrate, an electro-conductive elastic layer on the substrate, and a plurality of electrically insulating domains formed in a partial region on the electro-conductive elastic layer. The electro-conductive elastic layer has a Martens hardness of 0.10 N/mm2 or more and 3.00 N/mm2 or less. In the surface of the member for electrophotography, the exposure ratio of the electro-conductive elastic layer per the area of a square 300 ?m on a side is 50% to 90%, and the average of the areas of the portions of the respective plurality of electrically insulating domains to be brought into contact with the electro-conductive elastic layer is 300 ?m2 or more and 10,000 ?m2 or less.

Abstract: Provided is a member for electrophotography that can achieve both an improvement in toner-conveying force under high temperature and high humidity, and excellent charge-providing performance for a toner, at high levels. The member for electrophotography includes a substrate, an electro-conductive elastic layer on the substrate, and a plurality of electrically insulating domains formed in a partial region on the electro-conductive elastic layer. The electro-conductive elastic layer has a Martens hardness of 0.10 N/mm2 or more and 3.00 N/mm2 or less. In the surface of the member for electrophotography, the exposure ratio of the electro-conductive elastic layer per the area of a square 300 ?m on a side is 50% to 90%, and the average of the areas of the portions of the respective plurality of electrically insulating domains to be brought into contact with the electro-conductive elastic layer is 300 ?m2 or more and 10,000 ?m2 or less.

Abstract: A cover body (22) includes side surface portions (22a, 22b) that surround a housing (2) of a speaker (1) in an installed state, and a ceiling surface portion (22c) that covers the side surface portions (22a, 22b). An open portion (23) that can expose an operation portion (9) of the speaker (1) is formed in one of the side surface portions (22b), and an overhang portion (24) that protrudes from the surface of the side surface portion (22b) is provided above the open portion (23).

Abstract: A vehicular rear panel with a new configuration is provided. The vehicular rear panel according to an aspect of the present disclosure is made of a resin material and disposed on a rear vehicle body part. The vehicular rear panel includes a light guiding unit configured to guide light from the light source along an extending direction of the vehicular rear panel and a light emitting unit configured to emit light in the light guiding unit to a rear side of a vehicle.

Abstract: A high quality developing member that is excellent in deformation recovery property under a high temperature and that also satisfies filming resistance under a low temperature is provided. The developing member of the present invention includes a mandrel, an elastic layer formed on the outer periphery surface of the mandrel, and a surface layer covering the outer periphery surface of the elastic layer, wherein the surface layer contains a first resin and a second resin, the first resin has a particular structure between adjacent two urethane linkages, and the second resin is a resin having a particular structure and having a glass transition point Tg of 20° C. or higher and 120° C. or lower.

Abstract: A high-quality developing member which excels in filming resistance and excels in leak resistance despite high electroconductivity is provided. The developing member includes an electroconductive substrate, an elastic layer formed on the substrate, and a surface layer which covers a surface of the elastic layer. The surface layer includes a first resin which has, between two adjacent urethane linkages, a structure represented by the structural formula (1) and one or both of structures selected from the group consisting of a structure represented by the structural formula (2) and a structure represented by the structural formula (3), a second resin which has a structure represented by the structural formula (4) and one or both of structures selected from the group consisting of a structure represented by the structural formula (5) and a structure represented by the structural formula (6), and an electronically conductive filler.

Abstract: The present invention provides a developing member onto which a toner or the like is hard to fuse and with which toner conveying performance is unlikely to vary even through long-term usage. The developing member includes a substrate and a surface layer, the surface layer contains a polyurethane resin working as a binder resin and polyurethane resin particles dispersed in the binder resin, and the polyurethane resin working as the binder resin has, between two adjacent urethane bonds, a structure represented by a structural formula (1) and one or both of structures represented by structural formulas (2) and (3), and further has, between two adjacent urethane bonds, a structure represented by a structural formula (4).

Abstract: A developing roller which is excellent in image quality and image durability and stably outputs a uniform image, and a process cartridge and an electrophotographic apparatus using the developing roller are provided.

Abstract: Provided is a developing member capable of exerting stable performance under various environments. The developing member comprises a mandrel, an elastic layer formed on a periphery of the mandrel, and a surface layer covering a peripheral surface of the elastic layer. The surface layer contains a polyurethane and zinc oxide particles dispersed in the polyurethane, and the polyurethane has, between two adjacent urethane bonds, one or both of structures selected from structures according to the following item (A) and the following item (B): (A) a structure represented by the following structural formula (1), and one or both of structures selected from a structure represented by the following structural formula (2) and a structure represented by the following structural formula (3); and (B) a structure represented by the following structural formula (4).

Abstract: A high quality developing member that is excellent in deformation recovery property under a high temperature and that also satisfies filming resistance under a low temperature is provided. The developing member of the present invention includes a mandrel, an elastic layer formed on the outer periphery surface of the mandrel, and a surface layer covering the outer periphery surface of the elastic layer, wherein the surface layer contains a first resin and a second resin, the first resin has a particular structure between adjacent two urethane linkages, and the second resin is a resin having a particular structure and having a glass transition point Tg of 20° C. or higher and 120° C. or lower.

Abstract: A high-quality developing member which excels in filming resistance and excels in leak resistance despite high electroconductivity is provided. The developing member includes an electroconductive substrate, an elastic layer formed on the substrate, and a surface layer which covers a surface of the elastic layer. The surface layer includes a first resin which has, between two adjacent urethane linkages, a structure represented by the structural formula (1) and one or both of structures selected from the group consisting of a structure represented by the structural formula (2) and a structure represented by the structural formula (3), a second resin which has a structure represented by the structural formula (4) and one or both of structures selected from the group consisting of a structure represented by the structural formula (5) and a structure represented by the structural formula (6), and an electronically conductive filler.

Abstract: A vehicular rear panel with a new configuration is provided. The vehicular rear panel according to an aspect of the present disclosure is made of a resin material and disposed on a rear vehicle body part. The vehicular rear panel includes a light guiding unit configured to guide light from the light source along an extending direction of the vehicular rear panel and a light emitting unit configured to emit light in the light guiding unit to a rear side of a vehicle.

Abstract: A developing roller including a mandrel, an elastic layer provided on the mandrel and containing a cured material of an addition curable-type dimethyl silicone rubber, and a surface layer containing a urethane resin that covers the circumferential surface of the elastic layer. The urethane resin has a structure represented by the following formula (1), and one or both structures selected from a structure represented by the following formula (2) and a structure represented by the following formula (3) between two adjacent urethane linkages.

Abstract: Provided is a developing member capable of exerting stable performance under various environments. The developing member comprises a mandrel, an elastic layer formed on a periphery of the mandrel, and a surface layer covering a peripheral surface of the elastic layer. The surface layer contains a polyurethane and zinc oxide particles dispersed in the polyurethane, and the polyurethane has, between two adjacent urethane bonds, one or both of structures selected from structures according to the following item (A) and the following item (B): (A) a structure represented by the following structural formula (1), and one or both of structures selected from a structure represented by the following structural formula (2) and a structure represented by the following structural formula (3); and (B) a structure represented by the following structural formula (4).

Abstract: The present invention provides a developing member onto which a toner or the like is hard to fuse and with which toner conveying performance is unlikely to vary even through long-term usage. The developing member includes a substrate and a surface layer, the surface layer contains a polyurethane resin working as a binder resin and polyurethane resin particles dispersed in the binder resin, and the polyurethane resin working as the binder resin has, between two adjacent urethane bonds, a structure represented by a structural formula (1) and one or both of structures represented by structural formulas (2) and (3), and further has, between two adjacent urethane bonds, a structure represented by a structural formula (4).

Abstract: An object of the present invention is to provide a production process of a roller for an electrophotography, having a surface layer the electric resistance of which has been controlled by corona discharge treatment while keeping any pinholes from coming about on the surface. A production process of a roller for an electrophotography, said roller comprising a conductive mandrel and a conductive surface layer comprising a resin and carbon black dispersed in the resin, the process having the following steps (1) to (3): (1) forming a resin layer comprising a resin and carbon black dispersed therein on the circumference of the conductive mandel; (2) attaching silica particles on the surface of the resin layer; and (3) subjecting corona discharge treatment to the surface of the resin layer on which the silica particles are attached.

Abstract: A developing roller used for formation of an electrophotographic image with high quality is provided in which even in storage and use under a high temperature and high humidity environment, peel-off of a surface layer from an elastic layer is suppressed, and a toner hardly adheres to the surface of the developing roller. The developing roller is a developing roller including a mandrel, an elastic layer provided on the mandrel and containing a cured material of an addition curable-type dimethyl silicone rubber, and a surface layer containing a urethane resin that covers the circumferential surface of the elastic layer, wherein the urethane resin has a structure represented by the following formula (1), and one or both structures selected from a structure represented by the following formula (2) and a structure represented by the following formula (3) between two adjacent urethane linkages.