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11. 发明专利

JPH08106199A ELECTRIFYING ROLL 失效
公开(公告)号：JPH08106199A
公开(公告)日：1996-04-23
申请号：JP24311494
申请日：1994-10-06
申请人： TOKAI RUBBER IND LTD
发明人： SOMIYA KAZUTOSHI , OINUMA SUMIO , HAYASHI SABURO , YAMAMOTO TAKASHI
IPC分类号： G03G15/02
摘要： PURPOSE: To obtain an electrifying roll with which a good copied image is obtd. and the generation of noise can be suppressed. CONSTITUTION: This electrifying roll is produced by the following method. A first conductive foamed layer 21 is formed by using a material having electron-conductive conducting agent dispersed in a matrix component around a core metal 20. A second conductive foamed layer 22 is formed by using a material of a polymer material compounded with an ion-conductive conducting agent around the first conductive foamed layer 21. Further, a protective layer 23 is formed around the second conductive foamed layer 22.

12. 发明专利

JP2003003032A Electroconductive composition and electroconductive roll using the same 审中-公开
标题翻译：使用它的电极组合物和电极滚子
公开(公告)号：JP2003003032A
公开(公告)日：2003-01-08
申请号：JP2001186730
申请日：2001-06-20
申请人： Tokai Rubber Ind Ltd , 東海ゴム工業株式会社
发明人： ARIMURA SHOJI , OKUDA HIROBUMI , OINUMA SUMIO , TAKEDA KAZUHIRO , YAMAGUCHI NAOKI
IPC分类号： G03G15/02 , C08G18/40 , C08K5/29 , C08K9/04 , C08L27/04 , C08L33/04 , C08L33/10 , C08L61/22 , F16C13/00 , G03G15/00 , G03G15/08 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an electroconductive composition favored with excellent toner releasing property and reduced in dispersion of electric resistance, and an electroconductive roll using the composition. SOLUTION: The electroconductive composition contains as essential ingredients the following (A) to (E): (A) a copolymer obtained by using the following (a) to (c); (a) fluorinated (meth)acrylate, (b) polysiloxane group- containing (meth)acrylate, and (c) (meth)acrylate other than (a) and (b), (B) a fluorinated olefin resin; (C) a (meth)acrylic resin; (D) a curing agent comprising at least one of an isocyanate-based curing agent and an amino resin; and (E) carbon black of which the surface is grafted or coated with a polymer.
摘要翻译：要解决的问题：提供有利于具有优异的调色剂释放性能和降低电阻分散性的导电组合物和使用该组合物的导电辊。解决方案：导电组合物含有以下（A）至（E）的必要组分：（A）通过使用以下（a）至（c）获得的共聚物; （a）和（b）中的（甲）丙烯酸酯，（b）含聚硅氧烷基的（甲基）丙烯酸酯和（c）（甲基）丙烯酸酯，（B）氟化烯烃树脂; （C）（甲基）丙烯酸树脂; （D）包含异氰酸酯类固化剂和氨基树脂中的至少一种的固化剂; 和（E）其表面被聚合物接枝或涂覆的炭黑。

13. 发明专利

JP2002296897A DEVELOPING ROLL 失效
公开(公告)号：JP2002296897A
公开(公告)日：2002-10-09
申请号：JP2001097193
申请日：2001-03-29
申请人： TOKAI RUBBER IND LTD
发明人： HIRAMATSU HIROOMI , OINUMA SUMIO , TAKEDA KAZUHIRO , ISHIDA MASANORI , ARIMURA SHOJI
IPC分类号： G03G15/08 , C08J7/04 , F16C13/00
摘要： PROBLEM TO BE SOLVED: To provide a developing roll which has the uniformity of surface roughness and does not give rise to development defects, etc., in spite of long- term use. SOLUTION: The outermost layer of the developing roll formed with at least one layer on the outer peripheral surface of a shaft body consists of the following constitution (A): (A) the particles consisting of an organic polymer similar to an organic polymer matrix are dispersed into this matrix.

14. 发明专利

JP2000283149A MANUFACTURING METHOD OF ELECTRICALLY CONDUCTIVE ROLL AND ELECTRICALLY CONDUCTIVE ROLL PROVIDED THEREBY 失效
公开(公告)号：JP2000283149A
公开(公告)日：2000-10-13
申请号：JP9023999
申请日：1999-03-30
申请人： TOKAI RUBBER IND LTD
发明人： ISHIDA MASANORI , OINUMA SUMIO , TAKEDA KAZUHIRO , YAMAGUCHI NAOKI , IWASHIRO JIRO
IPC分类号： G03G15/02 , F16C13/00 , G03G15/08 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of an electrically conductive roll of low hardness, with small dispersion in electrical resistance and inexpensive. SOLUTION: (A) liquid rubber, (B) microcapsules including a foaming agent in their wall films made of thermoplastic resin and (C) an electrically conductive agent are prepared as essential forming materials of a base rubber layer 2 formed on an outer peripheral surface of a shaft body 1, they are cast in a mold 6 setting the shaft body 1, hollow bodies 4 are made from (B) by heating them and foaming the foaming agent in (B), (A) is bridged, and after dispersing and forming the hollow bodies 4 in the base rubber layer 2, an electrically conductive roll is manufactured by releasing it from the mold.

15. 发明专利

JP2000231291A CONDUCTIVE BLADE FOR TRANSFERRING AND ITS WORKING METHOD 失效
公开(公告)号：JP2000231291A
公开(公告)日：2000-08-22
申请号：JP3213099
申请日：1999-02-10
申请人： TOKAI RUBBER IND LTD
发明人： MORI HIROYUKI , OINUMA SUMIO
IPC分类号： B26D3/00 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To obtain a conductive blade that works well in an electrophotographic process by forming a tapered surface on the tip part side of a rubber blade main body and having a head part of a pointed part accompanying forming of the tapered surface constituted from a continuous curve that does not expand outside a cutting angle of the tapered surface. SOLUTION: This conductive blade for transferring is utilized to transfer a toner image on a photoreceptor to a recording material on the electrophotographic process. The tapered surface 11 is formed on the tip of the rubber blade main body 10 and the head part of the pointed part generated with forming of the tapered surface is a continuous curve that does not expand outside a cutting angle of the tapered surface. One definite standard in order to satisfy such state of the tapered surface is that the head part of the pointed part is not expanded outside a line C connecting a cutting starting point A of the tapered surface 11 and central point in thickness B of the blade main body 10 in the tapered surface 11.

16. 发明专利

JPH07271152A ELECTROSTATIC CHARGING ROLL 失效
公开(公告)号：JPH07271152A
公开(公告)日：1995-10-20
申请号：JP6417094
申请日：1994-03-31
申请人： TOKAI RUBBER IND LTD
发明人： OINUMA SUMIO , YAMAMOTO TAKASHI , SOMIYA KAZUTOSHI
IPC分类号： G03G15/02 , F16C13/00
摘要： PURPOSE:To provide an electrostatic charging roll which does not cause abnormal discharge nor local electrification fault. CONSTITUTION:A conductive elastic layer 22 is formed on the outer surface of an axial body 21, and a protective layer 25 is formed around this conductive elastic material layer 22. The protective layer 25 has a two-layer structure comprising an inner layer 23 and an outer layer 24. The electric resistance of the inner layer 23 is specified to 10 to 10 OMEGA.cm, while the electric resistance of the outer layer 24 is specified to 10 to 10 OMEGAcm.

17. 发明专利

JPH079588A PRODUCTION OF COMPOSITE ROLL 失效
公开(公告)号：JPH079588A
公开(公告)日：1995-01-13
申请号：JP18062193
申请日：1993-06-24
申请人： TOKAI RUBBER IND LTD
发明人： YAMAMOTO TAKASHI , SOMIYA KAZUTOSHI , OINUMA SUMIO , HAYASHI SABURO
IPC分类号： B29D99/00 , B29C39/10 , B29K105/04 , B29K105/20 , B29L9/00 , B29L31/32 , B29D31/00
摘要： PURPOSE:To prevent the generation of voids and to enhance the surface smoothness of a composite roll by removing air from the interface of the foam layer and non-foamable elastomer layer of the composite roll at the time of the production of the composite roll. CONSTITUTION:A non-foamed tube 14 having a large number of fine grooves extending in the axial direction thereof formed to the outer peripheral surface thereof and providing a foam layer is externally mounted on a core metal and a thin-walled elastomer tube 16 providing a non-foamable elastomer layer is externally mounted on the non-foamed tube and, after the whole is arranged in the columnar molding cavity of a mold main body 10 having a cylindrical shape, the non-foamed tube is foamed to integrate the foam layer formed from the non-foamed tube with the non-foamable elastomer layer provided by an elastomer tube.

18. 发明专利

JPH06186824A ELECTROSTATIC CHARGING ROLL 失效
公开(公告)号：JPH06186824A
公开(公告)日：1994-07-08
申请号：JP35459792
申请日：1992-12-16
申请人： TOKAI RUBBER IND LTD
发明人： HAYASHI SABURO , OINUMA SUMIO , KATO HIROYASU
IPC分类号： B32B5/18 , F16C13/00 , G03G15/02
摘要： PURPOSE:To provide the electrostatic charging roll capable of maintaining a smooth surface, lowering the vibration noise by the AC component of an electric field when the roll is brought into pressurized contact with a photosensitive body and forming a stable nip by providing a conductive elastic material layer which is not a foam on the outer periphery of a foam layer. CONSTITUTION:The foam layer 14 consisting of a conductive foam is provided on the outer periphery of a shaft body (arbor) 12 and the conductive elastic material layer 16 is provided on the outer periphery thereof, by which a base layer is formed. The outer periphery of the base layer is coated with a resistance control layer 18 and a protective layer 20 in this order. Conductive rubber compsns. and conductive thermoplastic elastomers formed by incorporating conductive powders and conductive fibers, such as metallic powder, carbon black and carbon fibers, into various kinds of rubber compsns. and thermoplastic elastomers are optimum as the material for forming the conductive elastic material layer 16. The thickness of the conductive elastic material layer 16 is preferably specified to 100 to 1200mum.

19. 发明专利

JPH04314072A LAYER FORMING MEMBER AND PRODUCTION THEREOF 失效
公开(公告)号：JPH04314072A
公开(公告)日：1992-11-05
申请号：JP10855791
申请日：1991-04-12
申请人： TOKAI RUBBER IND LTD
发明人： KACHI AKIHIKO , TOMITA MITSUTOSHI , OINUMA SUMIO
IPC分类号： G03G15/09
摘要： PURPOSE:To easily obtain high dimensional accuracy and to maintain initial performance over a long period of time by extending a pressure contact member having an approximately circular section to the other end of a planar base material. CONSTITUTION:Mounting holes 9 for positioning are provided on a supporting holder 5. The planar base material 8 is also bored with mounting holes 10 for positioning corresponding thereto. These materials are superposed on each other and are imposed in this state on a forming mold erected with projecting parts for positioning. An elastic molding material for forming the pressure contact member is cast in this state to form the pressure contact member 6 having the circular section on the front end side of the planar base material 8. The front and rear surfaces of the planar base material 8 in such a case are thinly coated with the molding material for forming the pressure contact member and are thereby protected. Coating of only either the front or rear surface of the planar base material 8 or the partial coating of the front and rear surfaces is executed in such a case. The initial performance is thereby exhibited and the generation of unequal wear, etc., is obviated even if any part of the pressure contact member 6 having approximately the circular section comes into contact with a developing roll.

20. 发明专利

JP2002048130A ROLLER FOR OA EQUIPMENT 失效
公开(公告)号：JP2002048130A
公开(公告)日：2002-02-15
申请号：JP2000236121
申请日：2000-08-03
申请人： TOKAI RUBBER IND LTD
发明人： TAKEDA KAZUHIRO , OINUMA SUMIO , YAMAGUCHI NAOKI , HIRAMATSU HIROOMI , YOSHIKAWA HITOSHI
IPC分类号： B65H3/06 , B65H5/06 , C08C19/25 , C08C19/42 , C08F8/00 , C08G81/02 , C08J5/00 , C08L9/00 , C08L91/00 , F16C13/00 , G03G15/00 , G03G15/02 , G03G15/08 , G03G15/16 , G03G15/20 , G03G21/06
摘要： PROBLEM TO BE SOLVED: To provide a roller for OA equipment wherein neither interference nor retardation in crosslinking reaction is caused, which has an excellent anti- settling characteristic and a low temperature bleed characteristic, and in which low degree of hardness is realized. SOLUTION: In the roller for OA equipment in which a base rubber layer 2 and an intermediate layer 3 and a surface layer 4 are formed in this order on the outer periphery of a shaft body 1, the base rubber layer 2 is formed by a liquid rubber composition containing components (A)-(D) shown below: (A) a liquid rubber including a structural unit (α) which is derived from at least either butadiene or isoprene and has an alkenyl group in a side chain, (B) hydrosilyl crosslinking agent, (C) hydrosilylation agent, and (D) mineral system oil of sulfur content 0.31% by weight or less.

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