Abstract: The present invention provides a secondary battery electrode binder that exhibits superior binding capacity as compared to conventional binders and that also makes it possible to reduce electrode slurry viscosity, even when there is a high concentration of active material in an electrode mixture layer composition. The present invention also provides a secondary battery electrode mixture layer composition, a secondary battery electrode, and a secondary battery that are obtained using the binder. The present invention relates to a secondary battery electrode binder that contains a carboxyl-group-containing polymer or a salt of a carboxyl-group-containing polymer. The carboxyl-group-containing polymer or salt of a carboxyl-group-containing polymer includes structural units that are derived from monomers that are represented by general formula (1) and structural units that are derived from ethylenic unsaturated carboxylic acid monomers that are different from general formula (1).

Abstract: A mold for use in producing a molded body of an elastomer has a holding layer and a releasing layer on an inner periphery surface of a main body of a die. The releasing layer is formed of an addition two-component liquid silicone having a polysilazane-based or polysiloxane-based chain as a main chain, contains 0.5 mass % or less of a component which volatilizes at a curing temperature of a liquid elastomer raw material, does not contain silica, has International Rubber Hardness Degree of 50 to 85 degrees, and contains a solid lubricant having an average particle size of 2 to 20 ?m. The present invention also provides a method for manufacturing a blade for an electrophotographic apparatus by using the mold and a developer amount controlling blade having specific load length ratio and ten-point average roughness in which a blade member is manufactured with the method.

Abstract: A developer level control blade is provided which can form a developer layer on a developer carrying member in a proper thickness and in a uniform state and can keep the developer, in particular, color toner particles from melt-adhering to the charge control face so that faulty images such as lines and non-uniformity can be kept from occurring. Also provided is a process for manufacturing this developer level control blade. The process for manufacturing the developer level control blade is characterized by having the steps of extruding a blade member material melted to liquefy, covering therewith a support member thin-plate metal member at an edge portion thereof to join the both together, and cooling the blade member material to solidify, followed by cutting in a preset length.

Abstract: A mold for use in producing a molded body of an elastomer has a holding layer and a releasing layer on an inner periphery surface of a main body of a die. The releasing layer is formed of an addition two-component liquid silicone having a polysilazane-based or polysiloxane-based chain as a main chain, contains 0.5 mass % or less of a component which volatilizes at a curing temperature of a liquid elastomer raw material, does not contain silica, has International Rubber Hardness Degree of 50 to 85 degrees, and contains a solid lubricant having an average particle size of 2 to 20 ?m. The present invention also provides a method for manufacturing a blade for an electrophotographic apparatus by using the mold and a developer amount controlling blade having specific load length ratio and ten-point average roughness in which a blade member is manufactured with the method.

Abstract: A developer level control blade is provided which can form a developer layer on a developer carrying member in a proper thickness and in a uniform state and can keep the developer, in particular, color toner particles from melt-adhering to the charge control face so that faulty images such as lines and non-uniformity can be kept from occurring. Also provided is a process for manufacturing this developer level control blade. The process for manufacturing the developer level control blade is characterized by having the steps of extruding a blade member material melted to liquefy, covering therewith a support member thin-plate metal member at an edge portion thereof to join the both together, and cooling the blade member material to solidify, followed by cutting in a preset length.

Abstract: To provide a developer level control blade which ensures uniform wear of its blade member, enables well precise control of the touch pressure against the developer carrying member to achieve a proper pressure against the developer, and can keep the toner melt adhesion from occurring even in long-term service, a developer level control blade is used which has a stated peripheral shape, is to be disposed in touch with a developer carrying member for transporting a developer, holding the developer on its surface, and is used to control the level of the developer to be held on the surface of the developer carrying member. The control blade has a laminated structure in which a support member and a blade member are bonded, and the blade member has a stated surface free energy.

Abstract: A blade member manufacturing process using no mold and a developer quantity control blade manufacturing process using this blade member are disclosed in which a material for the blade member is extruded onto a charge control face face-transferring sheet in a uniform thickness, and solidified to form a layer, and the layer is cut into the shape of a blade member.

Abstract: A blade member manufacturing process using no mold and a developer quantity control blade manufacturing process using this blade member are disclosed in which a material for the blade member is extruded onto a charge control face face-transferring sheet in a uniform thickness, and solidified to form a layer, and the layer is cut into the shape of a blade member.

Abstract: To provide a developer level control blade which ensures uniform wear of its blade member, enables well precise control of the touch pressure against the developer carrying member to achieve a proper pressure against the developer, and can keep the toner melt adhesion from occurring even in long-term service, a developer level control blade is used which has a stated peripheral shape, is to be disposed in touch with a developer carrying member for transporting a developer, holding the developer on its surface, and is used to control the level of the developer to be held on the surface of the developer carrying member. The control blade has a laminated structure in which a support member and a blade member are bonded, and the blade member has a stated surface free energy.

Abstract: A cleaning blade for use in an electrophotographic apparatus, which rubs and eliminates residual toners. The cleaning blade is made up of polyrethane resin sheet controls chipping of a top end of the cleaning blade and reduces an abrasion of a photosensitive drum. The cleaning blade is prepared by mixing and hardening at least a prepolymer, which is obtained from butylene adipate polyester polyol, hexylene adipate polyester polyol and polyisocyanate, and a hardening agent including a low molecular weight polyol and potassium acetate so that a mol ration (&agr; value) of hydroxyl group to isocyanate group becomes not less than 0.7 and not more than 0.9.

Abstract: A blade member manufacturing process using no mold and a developer quantity control blade manufacturing process using this blade member are disclosed in which a material for the blade member is extruded onto a charge control face face-transferring sheet in a uniform thickness, and solidified to form a layer, and the layer is cut into the shape of a blade member.

Abstract: A cleaning blade mainly has polyurethane resin, which is mainly installed in an electrophotographic apparatus and rubs and eliminates residual toners control chipping of a top end of the cleaning blade and reduces an abrasion of a photosensitive drum. The cleaning blade is prepared by mixing and hardening at least prepolymer which is obtained from butylene adipate polyester polyol, hexylene adipate polyester polyol and polyisocyanate and the hardening agent including low molecular weight polyol and potassium acetate so that a mol ratio (&agr; value) of hydroxyl group to isocyanate group becomes not less than 0.7 and not more than 0.9.