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    11.
    发明专利
    未知

    公开(公告)号：DE69926954T2

    公开(公告)日：2006-03-02

    申请号：DE69926954

    申请日：1999-06-10

    Applicant: BRIDGESTONE CORP ,  SEIKO EPSON CORP

    Inventor： KIKUCHI HIROFUMI ,  NISHIMURO YOUICHI ,  MACHIDA KUNIO ,  MIYAZAWA HISASHI

    IPC: B41J2/175 ,  F16K15/14

    Abstract: The valve has disc-shaped valve body (1) with a fluid supply port (3) in the central portion thereof and composed of an elastic material whose peripheral portion is reinforced and fixed with a rigid material (2). The disc shaped valve body also has a thin walled portion in the intermediate annular portion between the fluid supply port and the peripheral portion in the radial direction, and/or an inflectional portion in the radial direction between the fluid supply port and the peripheral portion. The fluid supply port is closed when the valve body abuts against a fixed valve seat (4) placed so as to be opposite to the fluid supply port, and is opened when the valve body is separated from the fixed valve seat.

    12.
    发明专利
    未知

    公开(公告)号：DE69725535D1

    公开(公告)日：2003-11-20

    申请号：DE69725535

    申请日：1997-11-05

    Applicant: BRIDGESTONE CORP

    Inventor： ISHIKAWA HIKARU ,  MACHIDA KUNIO

    IPC: B29C45/16 ,  B29D11/00

    Abstract: A method of manufacturing optical-use plastic products such as various kinds of lenses including a magnifying lens, finder spectacle lens, contact lens, condenser lens; infrared ray projector, radiation thermometer, interferometer, scanner, etc. The method of manufacturing optical-use plastic products comprises a step A for injecting a melted resin into a mold cavity to produce a primary molding: and a step B for injecting a same resin as in the step A to a part or whole of the primary molding to form a molding in which the injected resin is melt-welded to the primary molding.

    15.
    发明专利
    未知

    公开(公告)号：DE60032400D1

    公开(公告)日：2007-02-01

    申请号：DE60032400

    申请日：2000-02-17

    Applicant: BRIDGESTONE CORP

    Inventor： TOYOSAWA SHINICHI ,  NISHIMURO YOUICHI ,  MACHIDA KUNIO ,  SHIMIZU TAKASHI ,  MASHITA NARUHIKO ,  FUKUDA YASUNORI ,  ARAI JUN ,  IMAI YASUSHI ,  UTSUNOMIYA TADASHI

    IPC: C08L53/00 ,  C08L53/02 ,  C08K5/01 ,  C08L21/00 ,  C08L23/10 ,  C08L91/00

    Abstract: There are disclosed a thermoplastic elastomer composition which comprises (a) a hydrogenated block copolymer obtained by hydrogenating the block copolymer comprising at least one polymer block composed principally of a vinylic aromatic compound and at least one polymer block composed principally of a conjugated diene compound; (b) a non-aromatic base softening agent having a kinematic viscosity at 40 DEG C of at least 100 mm /sec; and (c) propylene homopolymer and/or propylene copolymer comprising propylene as a principal component which is obtained through polymerization by using a metallocene catalyst, which is free from a lubricant, which has been heat treated, or which has a MFR (melt flow rate) in a specific range; a gasket material which comprises the above thermoplastic elastomer composition and is particularly suited for use in hard disc units because of its excellent sealing properties and its capability of preventing gas generation; a method for injection molding the above composition; an external anti-sticking agent for a thermoplastic elastomer or rubber which comprises fine particulates of ultrahigh molecular weight polyethylene having an average particle diameter in a specific range, and which is minimized in hygroscopicity, oil absorptivity and volatility, and has high heat resistance and anti-stickiness; and rubber and/or a thermoplastic elastomer which is incorporated with the above external anti-sticking agent and imparted with anti-stickiness.

    16.
    发明专利
    未知

    公开(公告)号：DE69833402D1

    公开(公告)日：2006-04-20

    申请号：DE69833402

    申请日：1998-11-04

    Applicant: BRIDGESTONE CORP ,  SEIKO EPSON CORP

    Inventor： NISHIMURO YOUICHI ,  MACHIDA KUNIO ,  MIYAZAWA HISASHI ,  SUZUKI KAZUNAGA

    IPC: B41J2/16 ,  B41J2/175 ,  B29C45/14 ,  B29C45/16

    Abstract: There is disclosed a multi-color injection molded disc-shaped ink tank valve for an ink jet printer, said valve comprising a plastics substrate in form of a ring-like outer portion (1) and an elastic material layer in form of a disc-like inner portion (2) that are integrally composited, wherein the thickness of the elastic inner portion (2) is less than the diameter of the ink tank valve and less than the thickness of the outer ring-like portion (1). The ink tank valve is shaped thus that the length in height direction is smaller than that in planar direction.

    17.
    发明专利
    未知

    公开(公告)号：DE60018695T2

    公开(公告)日：2006-01-26

    申请号：DE60018695

    申请日：2000-12-27

    Applicant: BRIDGESTONE CORP

    Inventor： IIZUKA MUNENORI ,  MACHIDA KUNIO

    IPC: C08L77/00 ,  C08L77/02 ,  C08L77/06 ,  G03G5/10 ,  H01B1/24

    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).

    18.
    发明专利
    未知

    公开(公告)号：DE69926954D1

    公开(公告)日：2005-10-06

    申请号：DE69926954

    申请日：1999-06-10

    Applicant: BRIDGESTONE CORP ,  SEIKO EPSON CORP

    Inventor： KIKUCHI HIROFUMI ,  NISHIMURO YOUICHI ,  MACHIDA KUNIO ,  MIYAZAWA HISASHI

    IPC: B41J2/175 ,  F16K15/14

    Abstract: The valve has disc-shaped valve body (1) with a fluid supply port (3) in the central portion thereof and composed of an elastic material whose peripheral portion is reinforced and fixed with a rigid material (2). The disc shaped valve body also has a thin walled portion in the intermediate annular portion between the fluid supply port and the peripheral portion in the radial direction, and/or an inflectional portion in the radial direction between the fluid supply port and the peripheral portion. The fluid supply port is closed when the valve body abuts against a fixed valve seat (4) placed so as to be opposite to the fluid supply port, and is opened when the valve body is separated from the fixed valve seat.

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