公开(公告)号：JPH1130915A

公开(公告)日：1999-02-02

申请号：JP13313898

申请日：1998-05-15

Applicant: BRIDGESTONE CORP

Inventor： MAEDA HIROKO ,  KAGA NORIHIKO ,  NIWA HIDEYUKI ,  YAMADA TSUTOMU ,  KITAMURA TAKASHI ,  KAWAGOE TAKAHIRO

IPC: G03G15/16

Abstract: PROBLEM TO BE SOLVED: To prevent a photoreceptor from being stained, to prevent toner from adhering, and to reduce the coefficient of friction by forming a surface layer on the surface of a conductive rubber layer and making the main material of the surface layer polyester polyurethane resin whose glass transition temperature is specified. SOLUTION: As to this intermediate transfer member 20b; the surface layer 202 is formed on the surface of the conductive rubber layer 201, and the main material of the layer 202 is the polyester polyurethane resin whose glass transition temperature is -20 deg.C to 20 deg.C. An elastic body which is obtained by adding a conductive material, etc., to a suitable rubber material so that conductivity is imparted is used as the layer 201. In this case, it is desirable that the resistance value of the member is adjusted to be an intermediate resistance area without mixing the conductive material to the layer 202 by using the polyester polyurethane resin whose volume resistivity is 10 to 10 Ω.cm as the one for forming the layer 202. Thus, the resistance value of the member can be easily adjusted to the intermediate resistance area.

公开(公告)号：JPH10211681A

公开(公告)日：1998-08-11

申请号：JP3132697

申请日：1997-01-30

Applicant: BRIDGESTONE CORP

Inventor： MAEDA HIROKO ,  KAGA NORIHIKO ,  NIWA HIDEYUKI ,  YAMADA TSUTOMU ,  KAWAGOE TAKAHIRO

IPC: B41J13/076 ,  B29D29/00 ,  B32B27/30 ,  C08G18/62 ,  C09D175/04 ,  G03G7/00 ,  G03G15/02 ,  G03G15/08 ,  G03G15/16 ,  G03G15/20

Abstract: PROBLEM TO BE SOLVED: To carry out the pollution control or the like of a photosensitive body or the like by using fluorine-containing resin with a functional group reactive with isocyanate group and resin containing a reactive product composed of a polyol compound and a polyisocyanate compound reacted each other to form a skin layer of a member such as a belt or a roll in an OA equipment. SOLUTION: A skin layer 13 containing fluorine containing resin with a functional group reactive with isocyanate and a reactive product of a polyol compound and a polyisocyanate compound reacted each other is formed on an elastic layer or layers 12 formed on one face or both faces of an OA equipment member such as a copier, a printer or the like, for example, of a member such as a belt, a roller, a blade or the like, or of a core material 11 of an intermediate transfer belt 1. As for the fluorine containing resin, anyone can be used as far as having a functional group reactive with isocyanate, and vinyl ether, vinyl ester, acrylate or the like is used preferably. As the functional group reactive with isocyanate, hydroxyl is particularly preferable.

公开(公告)号：JPH10166508A

公开(公告)日：1998-06-23

申请号：JP35315196

申请日：1996-12-16

Applicant: BRIDGESTONE CORP

Inventor： MAEDA HIROKO ,  KAGA NORIHIKO ,  NIWA HIDEYUKI ,  YAMADA TSUTOMU ,  KAWAGOE TAKAHIRO

IPC: G03G15/16 ,  B32B25/14 ,  B32B27/30 ,  B65H5/02 ,  B65H5/06 ,  G03G15/08 ,  G03G15/20

Abstract: PROBLEM TO BE SOLVED: To make it possible to give a favorable flexibility to this member with characteristics peculiar to fluoroplastic maintained by a method wherein a skin layer containing the graft polymer of a fluoroplastic and a fluororubber is formed on the surface of an apparatus. SOLUTION: A member for OA apparatus, overlaid with a skin layer 13 containing the graft polymer of a fluororubber and a fluoroplastic, assumes a proper form such as a belt-like, a drum-like, a plate-like form or the like. For example, an intermediate transfer belt 1 consists of a core material 11 composing of fabric made of cotton, nylon or the like, elastic layers 12 and 12 formed on one side or both sides of the core material 11 and the skin layers 13 formed on the surface of the elastic layer 12. The lamination of the skin layers 13 onto the elastic layer 12 is executed by painting the graft polymer of the fluororubber and the fluoroplastic dissolved or dispersed in a proper solvent or under high temperature molten state by means of a dipping method, a spraying method or the like or, by chance, by extrusion-molding or injection- molding the graft polymer under high temperature molten state.

公开(公告)号：JPH08104444A

公开(公告)日：1996-04-23

申请号：JP25745794

申请日：1994-09-27

Applicant: BRIDGESTONE CORP

Inventor： YAMAZAKI HIROTAKA ,  FUKAHORI YOSHIHIDE ,  YAMADA TSUTOMU ,  TOYOSAWA SHINICHI

IPC: B41J13/076 ,  B65H3/06 ,  B65H3/52 ,  B65H5/06 ,  B65H27/00 ,  B65H29/20 ,  F16C13/00 ,  G03G15/00

Abstract: PURPOSE: To improve stability of a friction coefficient from a viewpoint of construction by keeping a contact surface condition constant from the initial use, use passage through final use. CONSTITUTION: At an elastic roll surface for feeding and discharging paper (friction contact surface), a plurality of groove elements 2 whose cross sections are of asymmetrical corrugated shape are formed beforehand at right angles to the paper feed direction so as to obtain 0.02

公开(公告)号：JPH0853251A

公开(公告)日：1996-02-27

申请号：JP20601994

申请日：1994-08-08

Applicant: BRIDGESTONE CORP

Inventor： YAMAZAKI HIROTAKA ,  FUKAHORI YOSHIHIDE ,  YAMADA TSUTOMU ,  TOYOSAWA SHINICHI

IPC: B65H5/06 ,  B65H27/00

Abstract: PURPOSE:To enhance the function of wear resistance in view of a structure by forming many wear attenuation grooves on the external surface of a roller coming in contact with a sheet-shaped product. CONSTITUTION:Many grooves 2 are formed on the rigid body contact surface 3 of an elastic body roll 1 repeatedly in frictional contact with a rigid body (including paper), and the width of each groove 2 is taken at W with the depth at (t), while a gap between the grooves 2 is taken at L. When the width W is too small, both sides of the grooves 2 come in contact with each other, due to an external force, leading to the loss of the effectiveness of the grooves 2. On the other hand, when the width W is too large, not only a friction factor is reduced, but also an abnormal vibration is induced or an abnormal fracture occurs, due to the reduction of a contact area with the rigid body. Thus, the width W is taken as 0.1mm

公开(公告)号：JP2012078294A

公开(公告)日：2012-04-19

申请号：JP2010225972

申请日：2010-10-05

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： YAMADA TSUTOMU

IPC: G01N3/42

Abstract: PROBLEM TO BE SOLVED: To provide an apparatus for measuring minim hardness capable of precisely measuring the hardness of a minim region even if a soft material is used as a specimen; and to provide a method for measuring minim hardness capable of precisely measuring the hardness of a boundary face between adjacent portions of the specimen having portions with different compositions.SOLUTION: This apparatus for measuring the minim hardness includes an indenter 2 for being pressed into the surface of a specimen 1, and the tip of the indenter 2 has a diameter within a range of 1-50 μm and an angle within a range of 1-60°. This method for measuring the minim hardness measures the hardness of the boundary face between adjacent portions of the specimen 1 that has portions with different compositions, uses the device for measuring the minim hardness, and presses the indenter 2 into the boundary face.

Abstract translation: 要解决的问题：提供一种用于测量最小硬度的装置，即使使用软材料作为试样，也能够精确地测量最小区域的硬度; 并且提供一种用于测量最小硬度的方法，其能够精确地测量具有不同组成的部分的样本的相邻部分之间的边界面的硬度。 解决方案：用于测量最小硬度的该装置包括用于压入试样1的表面的压头2，压头2的尖端具有在1-50μm范围内的直径和 范围1-60°。 用于测量最低硬度的方法测量具有不同组成部分的样品1的相邻部分之间的边界面的硬度，使用用于测量最小硬度的装置，并将压头2按压到边界面。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2010014641A

公开(公告)日：2010-01-21

申请号：JP2008176623

申请日：2008-07-07

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： YAMADA TSUTOMU

IPC: G01N3/08 ,  G01N3/00

Abstract: PROBLEM TO BE SOLVED: To provide a rubber tensile testing method capable of clarifying anisotropy in tensile test due to the effects of calender grain etc. of vulcanized rubber even through the use of a testing apparatus for ring-like test strips. SOLUTION: With a racetrack-shaped test strip 1 consisting of a pair of semicircular parts 2 and a pair of linear parts 3 connecting both semicircular parts 2 wound around latch parts 4a and 4b at the semicircular parts 2, one latch part 4b is linearly separated and displaced from the other latch part 4a. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种橡胶拉伸试验方法，即使通过使用环状试验片的试验装置，也能够通过硫化橡胶的砑光机等的影响来澄清拉伸试验中的各向异性。 解决方案：使用由一对半圆形部分2组成的跑道形状的测试条1和连接半圆形部分2上的锁定部分4a和4b上缠绕的半圆形部分2的一对直线部分3，一个闩锁部分4b 被线性地分离并从另一个闩锁部分4a移位。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2007131666A

公开(公告)日：2007-05-31

申请号：JP2005323456

申请日：2005-11-08

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： YAMADA TSUTOMU

IPC: C08J3/24 ,  C08K5/14 ,  C08L9/00 ,  C08L23/00 ,  C08L27/18 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a method for efficiently producing a crosslinked rubber having low hardness, small compression set and excellent slipperiness and surface flatness and suitable for a laminated blade for electrophotographic devices. SOLUTION: A crosslinked rubber is produced by compounding a liquid rubber with ingredients, kneading the mixture, forming to a desired form after defoaming, and curing by crosslinking, wherein an olefinic powdery wax or a PTFE/polyethylene alloy powdery wax is compounded as one of the ingredients, and the kneading operation is carried out by using a planetary mixer. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 解决问题的方案：提供一种有效地制造低硬度，小的压缩永久变形和优异的滑动性和表面平整度的交联橡胶的方法，并且适用于电子照相装置的层压叶片。 解决方案：通过将液体橡胶与成分混合，捏合混合物，在消泡后形成所需形式并通过交联固化来制备交联橡胶，其中将烯烃粉末蜡或PTFE /聚乙烯合金粉末蜡复合 作为成分之一，并且通过使用行星式混合器进行捏合操作。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007130787A

公开(公告)日：2007-05-31

申请号：JP2005323448

申请日：2005-11-08

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： YAMADA TSUTOMU

IPC: B29D99/00 ,  B29B7/38 ,  B29K9/00 ,  B29K105/20 ,  F16C13/00

Abstract: PROBLEM TO BE SOLVED: To provide a method capable of efficiently manufacturing a rubber roller, which has excellent characteristics low in hardness and reduced in compression permanent strain, with good dimensional precision.
SOLUTION: In this manufacturing method of the rubber roller for compounding and kneading compounding agents with a liquid rubber and molding the kneaded mixture into a roller shape after defoaming to crosslink and cure the same, a photopolymerization initiator is compounded with the liquid rubber as one of the compounding agents and kneading operation is performed using a planetary type mixer to crosslink and cure the kneaded matter by the irradiation with ultraviolet rays.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 解决方案：提供一种能够有效地制造具有优异的低硬度特性和压缩永久变形特性的橡胶辊，具有良好的尺寸精度的方法。 解决方案：在该混合混合剂与液体橡胶的橡胶辊的制造方法中，在消泡后将捏合的混合物成型为辊状以进行交联和固化，光聚合引发剂与液体橡胶 作为配合剂和捏合操作之一，使用行星式混合机进行紫外线照射来使捏合物交联固化。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006267568A

公开(公告)日：2006-10-05

申请号：JP2005085773

申请日：2005-03-24

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： YAMADA TSUTOMU ,  OSAKI TOSHIYUKI

IPC: G03G15/00 ,  F16C13/00

Abstract: PROBLEM TO BE SOLVED: To provide a conductive roller in which no foul odor remains because unpleasant odors due to decomposed gases of organic peroxides are not emitted during manufacture of the conductive roller and which has low hardness and low compression set.
SOLUTION: The conductive roller 1 comprises a shaft 2 and an elastic layer 3 formed on the periphery of the shaft 2, wherein the elastic layer 3 is formed using a rubber composition prepared by blending a component (A): polybutadiene rubber or polyisoprene rubber having a cis-1,4-bond content of ≥90% with a component (B): 1,1-di(t-hexylperoxy)-3,3,5-trimethylcyclohexane and/or 1,1-di(t-amylperoxy)-3,3,5-trimethylcyclohexane and a component (C): a conductive agent.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种导电辊，其中不会产生恶臭，因为在制造导电辊期间不会释放由于有机过氧化物的分解气体引起的不愉快的气味，并且具有低的硬度和低的压缩永久变形。 导电辊1包括轴2和形成在轴2的周边上的弹性层3，其中弹性层3使用通过将组分（A）：聚丁二烯橡胶或 具有组分（B）的顺式-1,4-键含量≥90％的聚异戊二烯橡胶：1,1-二（叔己基过氧）-3,3,5-三甲基环己烷和/或1,1-二（ 叔戊基过氧）-3,3,5-三甲基环己烷和（C）成分：导电剂。 版权所有（C）2007，JPO＆INPIT