Abstract: There is disclosed a fluid supply valve comprising a disc-shaped valve body which is equipped with a fluid supply port in the central portion thereof and composed of an elastic material whose peripheral portion is reinforced and fixed with a riqid material, the fluid supply port being closed when the valve body abuts against a fixed valve seat placed so as to be opposite to the fluid supply port, and being opened when the valve body is separated from the fixed valve seat, wherein the disc-shaped valve body is equipped further with a thin-walled portion in the intermediate annular portion between the fluid supply port and the peripheral portion in the radial direction, and/or with an inflectional portion in the radial direction between the fluid supply port and the peripheral portion.

Abstract: There are disclosed a first gasketed cover which has excellent sealing properties and comprises a cover body composed of a thermoplastic resin and a gasket composed of a thermoplastic elastomer and integrated with the cover body; a second gasketed cover which has excellent sealing properties and is capable of preventing the generation of noises due the vibration of the cover and which comprises a cover body, a gasket composed of an elastic body and integratedly attached to the cover body, and a member composed of the elastic body of a type same as or different from that in the gasket and integratedly installed on at least part of the cover body plane portion excluding the gasket portion; an electronic equipment cover which is capable of preventing pressure difference between the inside and the outside thereof and which comprises a cover body and a membrane composed of an elastic body and installed on a hole placed on the plane portion of the cover body, in which the cover body is integrated with the membrane;

Abstract: A resin made base body for a photosensitive drum is characterized in that (1) a large number of irregularities composed of microscopic stripe-shaped projections and depressions extending in the axial direction of the base body composed of a synthetic resin made pipe are formed on an outer peripheral surface of the pipe; (2) a large number of irregularities composed of microscopic stripe-shaped projections and depressions extending in the circumferential direction of the base body composed of a synthetic resin made pipe are formed on an outer peripheral surface of the pipe; (3) a specular gloss at 60° of a surface of the base body composed of a synthetic resin made pipe, specified under JIS Z8741, is set in a range of 12 to 30; and (4) a skin layer having a high resistance is formed in an outer peripheral portion in the thickness direction of a peripheral wall of the base body composed of a synthetic resin made pipe, wherein an amount of the conductive agent present in the skin layer is equal to or less th

Abstract: Disclosed herein are a mixed resin compound, a resin pipe, a process for producing said resin pipe, and a photosensitive drum. The resin compound meets at least one of the following requirements. It is a mixture of two or more kinds of resins blended in a specific manner, it undergoes annealing under specific conditions, and it has specific values of surface roughness, Vickers hardness, coefficient of linear expansion, flexural modulus, and thermal conductivity. The resin pipe is suitable for use as the cylindrical base of the photosensitive drum for electrophotographic machines, such as copying machines, facsimiles, and printers. It is superior in surface smoothness, dimensional stability, coatability, and handlability, and hence it is very little vulnerable to damage during handling and dimensional change due to resin shrinkage and is; superior in heat resistance (desirable for solvent removal) and mechanical strength (desirable for flange fitting).

Abstract: There is disclosed a fluid supply valve comprising a disc-shaped valve body which is equipped with a fluid supply port in the central portion thereof and composed of an elastic material whose peripheral portion is reinforced and fixed with a rigid material, the fluid supply port being closed when the valve body abuts against a fixed valve seat placed so as to be opposite to the fluid supply port, and being opened when the valve body is separated from the fixed valve seat, wherein the disc shaped valve body is equipped further with a thin walled portion in the intermediate annular portion between the fluid supply port and the peripheral portion in the radial direction, and/or with an inflectional portion in the radial direction between the fluid supply port and the peripheral portion.

Abstract: Disclosed herein are a resin pipe, a process for production thereof, a base for a photosensitive drum, and a photosensitive drum formed from said base, said photosensitive drum being used for electrophotographic apparatus such as copying machines, facsimiles, and printers. The base has a tapered inner surface with a specific taper angle (&thgr;). The base also has a projection formed at a specific position. The base is formed from a specific molding material.

Abstract: The invention relates to a photosensitive drum based on a cylindrical base which is made with an electrically conductive resin composition which comprises a polyamide resin as the resin component and an electrically conductive material, said polyamide resin being one selected from the group consisting of polyamide resins obtained from m-xylylenediamine and adipic acid, polyamide resins obtained from &egr;-caprolactam, and mixtures thereof. The cylindrical base for the photosensitive drum has good surface smoothness as well as good mechanical strength, and it can be obtained easily by injection molding or the like from said resin composition.

Abstract: A bonded magnet featuring mechanical strength is obtained from a bonded magnet-forming composition comprising magnetic powder and a binder wherein the binder is based on highly crystalline polypropylene in one form or contains a modified polyolefin in another form. Also provided is a magnet roller comprising a magnet body (1) of bonded magnet configured into a roller shape and a shaft (2) associated therewith wherein at least the magnet body (1) is formed from the bonded magnet-forming composition.

Abstract: There is provided a cleaning blade which is used for cleaning an image-forming body in an electrophotographic apparatus, and which has excellent performances in that the cleaning blade is minimized in the deflection of its tip part, never contaminates an image-forming body and so forth. The cleaning blade equipped with unevenness on at least part of a plate member excluding the portion of the plate member in direct contact with the image-forming body, is obtained by arranging a support member in a mold which is equipped with unevenness on at least part of the inside surface thereof in contact with a molding material for the plate member; then casting the molding material for the plate member in the mold; and curing the molding material to integrate the plate member and the support member.

Abstract: Disclosed is a photosensitive drum including: a cylindrical base body with a photosensitive layer formed on the outer peripheral surface thereof; and flanges respectively provided on both end surfaces of the cylindrical base body, the flanges being rotatably supported for rotatably supporting the photosensitive drum; wherein the cylindrical base body is molded from a conductive resin, and one of the flanges is molded from the conductive resin integrally with the cylindrical base body. The photosensitive drum, which contributes to a reduction in manufacturing cost by simplifying the manufacturing process and to improvement in reliability, is provided.

Abstract: A method is provided for manufacturing an optical plastic article formed of a plastic resin composition and having a homogeneous construction and a surface shape within a predetermined dimensional accuracy. A first step includes injection molding melted resin of the plastic resin composition into a mold cavity to produce a primary molding. A second step includes injection molding melted resin of the plastic resin composition which is the same as in the first step over at least a portion of the primary molding to form a secondary molding melt-welded to the primary molding and having the surface shape within the predetermined dimensional accuracy. The secondary molding has a secondary molding maximum thickness less than a limit thickness at which shrinkage exceeds limits of the predetermined dimensional accuracy. The optical plastic article has an optical plastic article thickness defined by the primary molding and the secondary molding greater than the limit thickness.

Abstract: A bonded magnet featuring mechanical strength is obtained from a bonded magnet-forming composition comprising magnetic powder and a binder wherein the binder is based on highly crystalline polypropylene in one form or contains a modified polyolefin in another form. Also provided is a magnet roller comprising a magnet body (1) of bonded magnet configured into a roller shape and a shaft (2) associated therewith wherein at least the magnet body (1) is formed from the bonded magnet-forming composition.

Abstract: A compound resin wheel with two or more moldings integrated to form the resin wheel, wherein at least one of the two or more moldings made of a long fiber reinforced thermoplastic resin, the other molding or moldings made of metal and/or FRP.

Abstract: A resin wheel of a one piece wheel type comprising a rim and a disk molded integrally, in which a portion between an axle hole of the disk and the rim is in a form of a blind plate with no holes, and the wheel is formed by injection molding or injection compression molding of a fiber-reinforced thermoplastic resin. A resin wheel of a one piece wheel type comprising a rim and a disk molded integrally, in which a portion between an axle hole of the disk and the rim is in the form of a blind plate with no holes, excepting for bolt holes and the wheel is formed by injection molding or injection compression molding of a fiber-reinforced thermoplastic resin.

Abstract: A resin wheel consisting of two or more molded parts coupled together. The parts are molded separately and have threaded portions. Then, the threaded portion of one molded part is screwed into the threaded portion of the other molded part so that the parts are fitted and coupled together.

Abstract: This high speed, instantaneous multi-image recorder comprises a video camera, sensor unit and light projector. A frame memory is connected to the video camera, a flashtube is to the light projector, a retarder is to the sensor unit. The flashtube is connected to the retarder, and a monitor is connected to the frame memory. The video camera, sensor unit and light projected are placed as directed toward a moving object which is, for example, a golf club. When the golfer swings the club, the sensor unit detects the club, the light projector flashes, and the video camera picks up the golf ball and club head around the moment of impacting. Thus, the video camera catches many instantaneous poses within a frame. Many such images picked up in a signal frame of the video camera are displayed on the monitor screen for analysis.