Abstract: An elastic blade regulates the layer thickness of a toner used in the developing device of an image forming apparatus such as an electrophotographic apparatus. The elastic blade is manufactured by providing a metal layer consisting of a rolled metal. The metal layer has a warped shape including a convex side caused by rolling the metal layer. A rubber layer is provided only on a surface of the metal layer at the convex side thereof.

Abstract: A developing roller having a superior setting ability and having a uniform and high conductivity is provided by improving dispersion and stability of carbon black mixed in a solution of a coating resin, and then forming a resin layer that has a low modulus of elasticity and a high conductivity when coated. The developing roller includes a core shaft, an elastic body layer formed around the core shaft and made of rubber as a main ingredient, and a resin layer coated at least on an outer surface of the elastic body layer. The resin layer contains carbon black having a DBP absorption amount of 80 to 110 ml/100 g, a ratio of a DBP absorption amount to a nitrogen specific surface area being not more than 0.012 ml/m2, and a ratio of a volatile component to a nitrogen specific surface area being not more than 2.0×10−4 g/m2.

Abstract: A developing roller having a superior setting ability and having a uniform and high conductivity is provided by improving dispersion and stability of carbon black mixed in a solution of a coating resin, and then forming a resin layer that has a low modulus of elasticity and a high conductivity when coated. The developing roller comprises a core shaft, an elastic body layer formed around the core shaft and made of rubber as a main ingredient, and a resin layer coated at least on an outer surface of the elastic body layer. The resin layer contains carbon black having a DBP absorption amount of 80 to 110 ml/100 g, a ratio of a DBP absorption amount to a nitrogen specific surface area being not more than 0.012 ml/m2, and a ratio of a volatile component to a nitrogen specific surface area being not more than 2.0×10−4 g/m2.

Abstract: This specification discloses an elastic blade for regulating the layer thickness of a toner used in the developing device of an image forming apparatus such as an electrophotographic apparatus. The elastic blade is provided with a base layer and an elastic layer provided on the convex surface side of the base layer, and is high in flatness.

Abstract: A cleaning member comprising an ether series polyurethane rubber elastic body, the curing agent component of said ether series polyurethane rubber elastic body essentially consisting of a bifunctional component, or in addition, said ether series polyurethane rubber elastic body further containing a water repellency-adding material having an active group capable of chemically bonding to said polyurethane rubber.

Abstract: A cleaning member which is a cleaning blade for cleaning the discharging port formation surface of the ink jet recording head for an ink jet recording apparatus includes polyether polyurethane obtainable by the reaction between a hardening agent and the polyether urethane prepolymer which is obtained by the reaction between polyoxyalkyleneglycol and polyisocyanate, and an ink jet recording apparatus which uses the aforesaid cleaning blade enables a desirable image to be obtained for a long time without replacing cleaning blades.

Abstract: An elastic blade for press contacting a developing roller to regulate a thickness of a layer of developing agent conveyed by the developing roller to a developing area includes a springlike supporting plate, and a centrifugally molded rubber elastic layer coated on the supporting plate.

Abstract: An elastic blade is provided with a rubber layer and a surface resin layer provided on the rubber layer, the surface resin layer satisfying the following condition:3.ltoreq.E.times.t.ltoreq.30,whereE: elastic modulus of the surface resin layer (Kg/cm.sup.2);t: thickness of the surface resin layer (cm).

Abstract: The present invention relates to a member for regulating the quantity of a developer, that is free from deterioration in the physical properties thereof, even if the same is used for a long time. The member regulates the quantity of a developer being made of a polyurethane rubber composition which contains an amine-type catalyst.

Abstract: A cleaning blade for electrophotography has a blade body having a rubbery elasticity and a coating layer covering the surface of the blade body. The coating layer is composed of lubricating particles and a binder resin having a lubricability and a wear resistance. The blade body extends parallel to an axis of the latent image support.

Abstract: An elastic blade which is maintained in contact with the developing sleeve for defining the thickness of one-component developer to be transported by the developing sleeve to a developing area, is composed of an elastic base member, and a surface layer coated thereon and giving friction on the one-component developer, and the surface layer contains a substance chargeable frictionally to a polarity opposite to the triboelectric polarity of the one-component developer and another substance chargeable frictionally to a polarity the same as the triboelectric polarity of the one-component developer, and is charged frictionally, in total, to a polarity opposite to the polarity of the one-component developer.

Abstract: A cleaning blade for electrophotography, including an urethane elastomeric material incorporated with a porous nylon powder in such a manner that particles of the powder are embedded into the urethane elastomeric material.

Abstract: The present invention provides a cleaning blade of a cleaning device for eliminating remaining toner powder from a surface of an image-holding member. The cleaning blade is constituted of silicone rubber. The silicone rubber contains not more than 5% by weight of a low-viscosity organosiloxane component, has rubber hardness within the range of from 40.degree. to 90.degree., and cause permanent compression set of not more than 20% according to JIS A.

Abstract: The cleaning portion of a cleaning blade made of an elastomeric material is coated with graphite fluoride by applying graphite fluoride powder directly to the blade or applying to the blade a dispersion of graphite fluoride powder in a solvent and evaporating the solvent. Alternatively, graphite fluoride powder can be mixed with the elastomeric material from which the cleaning portion of the cleaning blade is formed.

Abstract: A blade comprising a polymeric elastomer containing a low surface energy compound, wherein the low surface energy compound exists in the polymeric elastomer as primary particles with an average particle size of 1 .mu.m or less or the low surface energy compound is in a mutually dissolved state in the polymeric elastomer, and a method for preparation thereof.A blade comprising a molded product obtained by curing a silicone-modified prepolymer formed by the reaction of a polyurethane prepolymer and silicone oil in a solvent, and a method for preparation thereof.