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公开(公告)号：JP2003342475A
公开(公告)日：2003-12-03
申请号：JP2002151867
申请日：2002-05-27
Applicant: Bridgestone Corp , 株式会社ブリヂストン
Inventor： OBA TAKESHI , MACHIDA KUNIO
IPC: C08L101/00 , C08K7/06
Abstract: PROBLEM TO BE SOLVED: To provide a conductive resin material prepared by dispersing fibrous carbon having a diameter of 1 μm or less in a mixture of at least two thermoplastic resins.
SOLUTION: The resin material has a sufficient electric conductivity even when a small amount of a conductive filler (fibrous carbon having a diameter of 1 μm or less) is compounded.
COPYRIGHT: (C)2004,JPOAbstract translation: 要解决的问题：提供通过将至少两种热塑性树脂的混合物分散在直径1μm以下的纤维状碳制成的导电性树脂材料。 解决方案：即使少量导电填料（直径为1μm以下的纤维状碳）复合，树脂材料也具有足够的导电性。 版权所有（C）2004，JPO
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公开(公告)号：JP2003342474A
公开(公告)日：2003-12-03
申请号：JP2002151865
申请日：2002-05-27
Applicant: Bridgestone Corp , 株式会社ブリヂストン
Inventor： OBA TAKESHI , MACHIDA KUNIO
IPC: C08L101/00 , C08K7/06
Abstract: PROBLEM TO BE SOLVED: To provide a conductive resin material prepared by dispersing fibrous carbon having a diameter of 1 μm or less in a thermoplastic resin. SOLUTION: This resin material has a sufficient electric conductivity even when a small amount of a conductive filler (fibrous carbon having a diameter of 1 μm or less) is compounded. COPYRIGHT: (C)2004,JPO
Abstract translation: 要解决的问题：提供通过将直径为1μm以下的纤维状碳分散在热塑性树脂中而制备的导电性树脂材料。 解决方案：即使少量导电填料（直径为1μm以下的纤维状碳）复合，该树脂材料也具有足够的导电性。 版权所有（C）2004，JPO
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公开(公告)号：JP2003113272A
公开(公告)日：2003-04-18
申请号：JP2001309795
申请日：2001-10-05
Applicant: BRIDGESTONE CORP
Inventor： NISHIMURO YOICHI , MACHIDA KUNIO , TOYOSAWA SHINICHI
Abstract: PROBLEM TO BE SOLVED: To provide a thermoplastic elastomer composition that has a practically sufficient level of strength and radiating properties as it retains the flame retardancy and provide radiating sheets made of the composition. SOLUTION: The thermoplastic elastomer composition comprises a thermoplastic elastomer, a thermally conductive filler and a flame retardant. As at least a part of the thermally conductive filler, a fine carbon fiber having the average diameter of 0.05-0.5 μm and the average length 1-50 μm is contained in an amount corresponding to the volume fraction of 0.1-10 vol.% in the formed composition. The radiating sheet is produced from the composition.
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公开(公告)号：JP2002372795A
公开(公告)日：2002-12-26
申请号：JP2002111179
申请日：2002-04-12
Applicant: Bridgestone Corp , 株式会社ブリヂストン
Inventor： SUZUKI TAKAHIRO , IIZUKA MUNENORI , MACHIDA KUNIO
IPC: G03G5/10
Abstract: PROBLEM TO BE SOLVED: To provide a high quality substrate for a photosensitive drum having satisfactory strength comparable to that of a metallic drum substrate and free of damage due to a shock in transport and in dropping and to provide a photosensitive drum using the substrate.
SOLUTION: The cylindrical substrate for a photosensitive drum constituting the substrate of a photosensitive drum used in an electrophotographic process is formed with an electrically conductive resin composition prepared by mixing and dispersing an electrically conductive agent and a filler in a resin base and the Izod impact value of the electrically conductive resin composition is ≥20 J/m.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供用于感光鼓的高质量基材，其具有与金属鼓基材的强度相当的强度，并且由于运输和滴落中的冲击而没有损坏，并提供使用该基材的感光鼓。 解决方案：用于感光鼓的感光鼓的圆柱形基底，用于电子照相过程中的感光鼓，由导电树脂组合物形成，该导电树脂组合物通过将导电剂和填充剂混合并分散在树脂基底中而制备，并且艾佐德冲击值 的导电性树脂组合物为> 20J / m。
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公开(公告)号：JP2002311618A
公开(公告)日：2002-10-23
申请号：JP2001113775
申请日：2001-04-12
Applicant: BRIDGESTONE CORP
Inventor： SUZUKI TAKAHIRO , IIZUKA MUNENORI , MACHIDA KUNIO
IPC: G03G5/10
Abstract: PROBLEM TO BE SOLVED: To provide a photosensitive drum which is excellent in dimensional accuracy and is capable of forming images having excellent image quality free of unevenness and a substrate for the photosensitive drum adequate for this photosensitive drum. SOLUTION: This substrate for the photosensitive drum contains a resin, is rotatable and is
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Patent Agency Ranking
公开(公告)号：JP2002121354A
公开(公告)日：2002-04-23
申请号：JP2001234006
申请日：2001-08-01
Applicant: BRIDGESTONE CORP
Inventor： TOYOSAWA SHINICHI , MACHIDA KUNIO
Abstract: PROBLEM TO BE SOLVED: To provide a heat radiating elastomer composition giving a sheet which has heat radiating properties comparable to those of a heat radiating sheet made by dispersing metal powders in a silicone rubber, has sufficient electrical insulating properties and can be recycled, and a heat radiating sheet made from the composition. SOLUTION: The heat radiating elastomer composition contains (A) a thermoplastic elastomer composition consisting of (a) 100 pts.wt. styrenic thermoplastic elastomer, (b) 1-100 pts.wt. propylene homopolymer and/or propylene copolymer comprising mainly propylene, and (c) 30-500 pts.wt. paraffinic oil, and (B) a metal compound powder. The heat radiating sheet is made from the composition.
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公开(公告)号：JP2001253950A
公开(公告)日：2001-09-18
申请号：JP2000395541
申请日：2000-12-26
Applicant: BRIDGESTONE CORP
Inventor： IIZUKA MUNENORI , MACHIDA KUNIO
Abstract: PROBLEM TO BE SOLVED: To obtain a resin pipe readily releasable from mold, producible with a good operating efficiency, having a high dimensional accuracy and suitable as a substrate, etc., for a photosensitive drum, and to provide the photosensitive drum equipped with the resin pipe. SOLUTION: This resin pipe has a tilt angle θ of a taper satisfying the relationship of 0.5×10-3
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公开(公告)号：JP2001252945A
公开(公告)日：2001-09-18
申请号：JP2000395623
申请日：2000-12-26
Applicant: BRIDGESTONE CORP
Inventor： IIZUKA MUNENORI , MACHIDA KUNIO
IPC: G03G5/10 , B29C45/17 , B29C45/72 , B29C71/00 , C08J7/00 , C08K3/04 , C08L77/00 , C08L101/00 , F16C13/00
Abstract: PROBLEM TO BE SOLVED: To provide a resin pipe manufacturing method capable of manufacturing a resin pipe with extremely good dimensional accuracy and suitably used in the manufacture of the resin pipe, wherein high dimensional accuracy is required in a case obtaining the substrate of a photosensitive drum used in an electrophotographic apparatus such as a copier, a facsimile or a printer. SOLUTION: In a method for manufacturing the resin pipe by injection- molding a thermoplastic resin or a resin composition based on the thermoplastic resin, a molded article is demolded from a mold to be subjected to annealing treatment.
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公开(公告)号：JP2001249578A
公开(公告)日：2001-09-14
申请号：JP2000395839
申请日：2000-12-26
Applicant: BRIDGESTONE CORP
Inventor： IIZUKA MUNENORI , MACHIDA KUNIO
Abstract: PROBLEM TO BE SOLVED: To obtain a base body for photoreceptor drum which is used for electrophotographic devices such as a copying machine, facsimile equipment and a printer, and is excellent in the moldability and is easily released from a mold, and which can hold a gear stably to the central axis of the base body, and can be given the excellent printing performance. SOLUTION: In the base body for photoreceptor drum obtained by injection molding a resin composition using thermoplastic resin or the thermoplastic resin as base material, a flange which closes the opening part of the base body and connects the gear part to drive the substrate for photoreceptor drum is fixed to at least the opening part of one side, a taper for facilitating the releasing from the mold after forming is provided in the inner peripheral surface, and a parallel part with the uniform diameter and longer than the inserting range of the flange connecting the gear is provided partially in the inner peripheral surface of the opening part fixing the flange.
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公开(公告)号：JP2001246636A
公开(公告)日：2001-09-11
申请号：JP2000395579
申请日：2000-12-26
Applicant: BRIDGESTONE CORP
Inventor： IIZUKA MUNENORI , MACHIDA KUNIO
Abstract: PROBLEM TO BE SOLVED: To provide a mixed resin composition suitably used as a substrate for a photoreceptor drum excellent in surface smoothness even in a case filled with carbon black or a reinforcing fiber and the photoreceptor drum using the resin composition as a substrate. SOLUTION: In the mixed resin composition wherein a molding material containing a mixed resin of two or more links of resins different in crystallizing speed is molded into a desired shape by injection molding, two or more kinds of the resins are mixed in a pellet state and the mixed pellets are melted to be injection-molded. The photoreceptor drum is obtained using a cylindrical substrate molded from the resin composition.
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