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1. 发明专利

JPH07267398A FEED ROLLER 失效
公开(公告)号：JPH07267398A
公开(公告)日：1995-10-17
申请号：JP6416794
申请日：1994-03-31
申请人： TOKAI RUBBER IND LTD
发明人： KUSUNOKI YOSHIHIRO , WAGO YOSHIHIRO , FUJII NAONARI
IPC分类号： B41J13/076 , B65H3/06 , B65H5/06 , G03G15/00
摘要： PURPOSE:To provide a feed roller having capability of preventing 'noises' and 'rattling' on a paper feeding mechanism part and axcellent durability, and workability by setting an elastic layer in its specified hardness and thickness in the case of a feed roller having the elastic layer formed on the outer periphery of its shaft body. CONSTITUTION:Such a shaft body 6, as being formed of a thermally hardening resin is generally used, however, the core metal of a metallic solid body or an internally hollow metallic cylinder may be used. As a rubber material for forming an elastic layer 7, various kinds of rubber used for manufacturing normal rollers may be used. However, ethylene-propylene-diene rubber having good workability whose proper friction coefficients can be easily obtained, and whose price is low is preferrably used. As a vulcanizing agent, sulphur, organic peroxidematerials, etc., are used and as additives a filling agent, a reinforcing agent a softening agent, a vulcanization promoting agent are used conveniently. The theckness of the elastic layer 7 is set to 1.0 to 2.0mm and hardness is set to Hs 20 to 50.

2. 发明专利

JPH10221927A ELECTRIFYING ROLL 失效
公开(公告)号：JPH10221927A
公开(公告)日：1998-08-21
申请号：JP2468197
申请日：1997-02-07
申请人： TOKAI RUBBER IND LTD
发明人： YAMAGUCHI KOJI , FUJII NAONARI , OYAMA YUKIO , KATO HIROYASU , TSUCHIYA KENICHI
IPC分类号： G03G15/02 , B29D99/00 , B29K21/00 , C07D303/08 , F16C13/00 , G03G15/16 , B29D31/00
摘要： PROBLEM TO BE SOLVED: To provide an electrifying roll having a resistance controlling layer made of an epichlorohydrin rubber without using a lead compd. as an acid accepting agent. SOLUTION: This electrifying roll is produced by forming a conductive rubber layer 12 having low hardness around an axial body 10, and successively forming an electrode layer 14, a resistance controlling layer 16 and a protective layer 18 around the conductive rubber layer 12. The resistance controlling layer 16 is formed by using an epichlorohydrin rubber with which a hydrotalcite is compounded as an acid accepting agent.

3. 发明专利

JPH11129352A EQUIPMENT FOR MANUFACTURING ROLL 失效
公开(公告)号：JPH11129352A
公开(公告)日：1999-05-18
申请号：JP29737397
申请日：1997-10-29
申请人： TOKAI RUBBER IND LTD
发明人： YAMAGUCHI KOJI , OYAMA YUKIO , FUJII NAONARI
IPC分类号： B29C45/73 , B29D99/00 , B29K21/00 , B29K105/24 , B29L31/32 , B29D31/00
摘要： PROBLEM TO BE SOLVED: To provide equipment which enables manufacture of a rubber roll having a surface excellent in smoothness in a shorter time than usual and at a low cost. SOLUTION: An inner die 14 is constituted so that it has the shape of a thin-wall cylindrical pipe having a tube wall made 0.3-3.0 mm thick and that it is supported by a support member 38 in a state wherein a core material 50 of a roll is positioned concentrically, while an outer die 12 is constituted so that a die holding hole part 46 which can hold the inner die 14 is formed between the mating surfaces of two split dies 18a and 18b and that a plurality of heaters are provided around the die holding hole part 46. In a state wherein the inner die 14 is held in the die holding hole part 46, a rubber material 56 is injected into a gap 52 between the inner die 14 and the core material 50 through a material injection part 48 making the die holding hole part 46 open outside, and the inner die 14 is heated by heater means 24. Thereby the rubber material 56 is subjected to vulcanization molding and the intended roll is obtained.

4. 发明专利

JPH10186801A ELECTRIFYING MEMBER 失效
公开(公告)号：JPH10186801A
公开(公告)日：1998-07-14
申请号：JP34518696
申请日：1996-12-25
申请人： TOKAI RUBBER IND LTD
发明人： YAMAGUCHI KOJI , OYAMA YUKIO , FUJII NAONARI
IPC分类号： G03G15/02 , F16C13/00
摘要： PROBLEM TO BE SOLVED: To provide an electrifying member constituted so that electrifying noise generated between the electrifying member and a photoreceptor drum is reduced, power consumption is reduced and the quality of an obtained copied image can be made high. SOLUTION: This electrifying member 8 is constituted so that an electrifying tube 7 is engaged in the outside circumference of an electrical conductive roll 6 with play. Then, the roll 6 is provided with a shaft body 4 and an electrical conductive layer 5 formed along the outside circumference of the shaft body 4. The ratio N to G of the outside diameter G of the roll 6 and the inside diameter N of the tube 7 is set to be N/G=1.010-1.200. Besides, the roll 6 is formed so that it cannot be rotated and the tube 7 is formed so that it can be rotated at the circumference thereof.

5. 发明专利

JPH08252832A PREPARATION OF ROLL 失效
公开(公告)号：JPH08252832A
公开(公告)日：1996-10-01
申请号：JP5764595
申请日：1995-03-16
申请人： TOKAI RUBBER IND LTD
发明人： YAMAGUCHI KOJI , TOYAMA KAZUNORI , FUJII NAONARI
IPC分类号： G03G15/20 , B29C43/10 , B29C43/18 , B29D99/00 , B29K21/00 , B29L31/00 , B29L31/32 , F16C13/00 , B29D31/00
摘要： PURPOSE: To provide a method for preparing a roll wherein the work can be performed by a simple operation and miniaturization and weight saving can be attempted. CONSTITUTION: A process wherein a hollow core metal 1 is arranged under a condition where its own outer peripheral face is positioned in the molding space 6 of a mold 5, a process for sealing an oil 4 in the hollow part 1a of the core metal 1, a process wherein after a rubber is injected in a space formed between the inner peripheral face of the molding space 6 and the outer peripheral face of the core metal 1, vulcanization molding is performed by pressurizing and heating and a process for removing the oil from the hollow part 1a of the core metal 1, are provided.

6. 发明专利

JPH0317656B2 失效
公开(公告)号：JPH0317656B2
公开(公告)日：1991-03-08
申请号：JP10175386
申请日：1986-05-01
申请人： TOKAI RUBBER IND LTD
发明人： ANDO YASUNARI , FUJII NAONARI
IPC分类号： B29C45/14 , B29C45/26 , B29L31/08

7. 发明专利

JPH10268631A DEVELOPING ROLL 失效
公开(公告)号：JPH10268631A
公开(公告)日：1998-10-09
申请号：JP7323697
申请日：1997-03-26
申请人： TOKAI RUBBER IND LTD
发明人： IMAI YOSUKE , KANBARA NORIO , FUJII NAONARI
IPC分类号： G03G15/08 , F16C13/00
摘要： PROBLEM TO BE SOLVED: To provide a developing roll capable of preventing the deformation of a contact part with a layer forming blade and obtaining an excellent image. SOLUTION: This developing roll is provided with a shaft body 1, a conductive elastic layer 2 formed along the outer peripheral surface of the shaft body 1, an adhesive layer 3 formed along the outer peripheral surface of the layer 2, and a surface layer 4 formed along the outer peripheral surface of the layer 3. The layer 2 is formed of forming material principally composed of silicone rubber; and microrubber hardness is set to =60% in the layer 2. The thickness of the surface layer 4 is set to

8. 发明专利

JPH10186793A CHARGING MEMBER 失效
公开(公告)号：JPH10186793A
公开(公告)日：1998-07-14
申请号：JP34518796
申请日：1996-12-25
申请人： TOKAI RUBBER IND LTD
发明人： YAMAGUCHI KOJI , OYAMA YUKIO , FUJII NAONARI
IPC分类号： G03G15/02
摘要： PROBLEM TO BE SOLVED: To reduce the sound of charging which is generated between a charging member and a photoconductor drum by providing a rod-shaped holding element inside a charging tube, extending a blade member from the rod-shaped holding element toward the inner peripheral surface of the charging tube, and pressing the end of the blade member against the inner peripheral surface of the charging tube. SOLUTION: A rod-shaped holding element 5 extending in the direction of the same axis as a charging tube 4 is provided inside the charging tube 4, and a blade member 6 is extended from the rod-shaped holding element 5 toward the inner peripheral surface of the charging tube 4. The end of the blade member 6 is pressed against the inner peripheral surface of the charging tube 4. Since only the charging drum 4 rotates, the sound of charging which is generated between a photoconductor drum and a charging member 7 can be reduced. The charging tube 4 used is obtained by blending conductive powders in a polyamide resin such as copolymer nylon, etc., or by blending conductive powder such as carbon black in a matrix component such as rubber.

9. 发明专利

JPH08142229A MANUFACTURE OF ELASTIC ROLL AND ELASTIC ROLL MOLD USED THEREFOR 失效
公开(公告)号：JPH08142229A
公开(公告)日：1996-06-04
申请号：JP28373394
申请日：1994-11-17
申请人： TOKAI RUBBER IND LTD
发明人： FUJII NAONARI , YAMAGUCHI KOJI , TOYAMA KAZUNORI
IPC分类号： F16C13/00 , B29C33/12 , B29D99/00 , B29K21/00 , B29L31/32 , B29D31/00
摘要： PURPOSE: To obtain an elastic roll in which an elastic layer having uniform filler distribution and uniform physical properties can be formed and a mold by opening the inlet of an air gap formed between the outer periphery of a shaft in a mold body and the inner periphery of the body. CONSTITUTION: A shaft holding member 2 is moved down by a hydraulic cylinder, inserted from the upper part of an extruder 8 into a pipe mold 1, the lower end of a shaft 7 is engaged with the bottom recess of the mold 1, and the shaft 7 is disposed in the mold 1. An elastic element forming material is introduced from an inlet tube 20 into a material reservoir 5 by a screw 4 in this state, and a predetermined quantity of elastic element forming material is extruded to an air gap formed between the inner periphery of the mold l and the outer periphery of the shaft 7 to be filled. The material is simultaneously filled toward the axial direction over the entire periphery of the outer periphery of the shaft 7. Treatment such as vulcanization, etc., is executed, and elastic layer is formed on the outer periphery of the shaft 7, the member 2 is raised, and an elastic roll is taken out from the mold 1 via the upper part of the extruder 8.

10. 发明专利

JPH03284749A ANTISTATIC ROLL 失效
公开(公告)号：JPH03284749A
公开(公告)日：1991-12-16
申请号：JP8552190
申请日：1990-03-30
申请人： TOKAI RUBBER IND LTD
发明人： NAGASAWA MASAHIKO , FUJII NAONARI
IPC分类号： G03D3/08
摘要： PURPOSE:To remove electric charge on the surface of a roll through a shaft part and to prevent the formation of a discharge trace on a film by electrically connecting a conductive layer formed on the outer periphery of a cylindrical body to the metallic shaft part on the opening part of the cylindrical body. CONSTITUTION:This antistatic roll is used for carrying a film or paper in an automatic developing machine or the like, the conductive layer 14 consisting of a conductive shrinking tube is formed on the outer periphery of the cylindrical body 12 consisting of phenolic resin and filler and the layer 14 is connected to the metallic shaft part 11 by a conductive part 15 on the opening part 12b of the cylinder 12. The conductive part 15 is formed by continuously applying conductive coating material to the outside face of one end of the layer 14, the opening part 12b and the shaft part 11 and drying the coating material.

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