WO2009133871A1 - Bande sans fin conductrice - Google Patents

Bande sans fin conductrice Download PDF

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Publication number
WO2009133871A1
WO2009133871A1 PCT/JP2009/058318 JP2009058318W WO2009133871A1 WO 2009133871 A1 WO2009133871 A1 WO 2009133871A1 JP 2009058318 W JP2009058318 W JP 2009058318W WO 2009133871 A1 WO2009133871 A1 WO 2009133871A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide rib
endless belt
conductive endless
urethane rubber
reinforcing material
Prior art date
Application number
PCT/JP2009/058318
Other languages
English (en)
Japanese (ja)
Inventor
安藤　幸夫
Original Assignee
株式会社ブリヂストン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Priority to CN2009801155543A priority Critical patent/CN102016728A/zh
Publication of WO2009133871A1 publication Critical patent/WO2009133871A1/fr

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/1605—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support
    • G03G15/162—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support details of the the intermediate support, e.g. chemical composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00135—Handling of parts of the apparatus
    • G03G2215/00139—Belt
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00135—Handling of parts of the apparatus
    • G03G2215/00139—Belt
    • G03G2215/00143—Meandering prevention
    • G03G2215/00151—Meandering prevention using edge limitations
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/16—Transferring device, details
    • G03G2215/1604—Main transfer electrode
    • G03G2215/1623—Transfer belt

Definitions

  • the present invention relates to a conductive endless belt suitably used as an intermediate transfer belt in an electrophotographic color printer or the like, and more specifically, a conductive endless belt in which a guide rib for preventing meandering is provided on the inner peripheral surface of the belt.
  • a guide rib for preventing meandering is provided on the inner peripheral surface of the belt.
  • an intermediate transfer belt method is known as a color printing method using toner.
  • the image forming apparatus that performs color printing by the intermediate transfer belt system includes four developing devices 1a to 1d that perform development in four colors of black B, yellow Y, magenta M, and cyan C, respectively.
  • a toner image is formed in each color on each photosensitive drum 2a to 2d, and a voltage is applied from the transfer roller 5 to the intermediate transfer belt 3 stretched in contact with each photosensitive drum 2a to 2d.
  • a toner image of each color (black B, yellow Y, magenta M, cyan C) formed on 2 to 2d is transferred to the surface of the intermediate transfer belt 3 to form a color image on the surface of the intermediate transfer belt 3, and the secondary image A voltage is applied to the recording paper (recording medium) 4 in contact with the intermediate transfer belt 3 by the transfer roller 7 to transfer the color image on the surface of the intermediate transfer belt 3, and this is heated and fixed by the fixing device 6. Going on.
  • a guide rib 32 is often formed along the side edge of the inner peripheral surface of the belt body 31 as shown in FIG.
  • the belt 32 is engaged with a guide groove provided on a pulley or a driving roller to prevent the belt from meandering (Patent Document 1: Japanese Patent Laid-Open No. 11-352832).
  • the guide rib 32 has been implemented or proposed to be formed of a solid material obtained from synthetic rubber, liquid polyurethane, or the like, or a low resilience material such as millable silicone or urethane foam.
  • solid materials obtained from synthetic rubber, liquid polyurethane, etc. have high resilience and a high coefficient of friction in dry environments. Derailment due to may occur. Further, in the case of a low resilience material such as millable silicone or foamed urethane, the tear strength is inferior and the wear resistance is not always sufficient. In particular, image quality may be deteriorated due to generation of abrasion powder. Furthermore, in the case of a urethane material, carcinogenicity is pointed out to the amine contained in the curing agent used, and it is desirable to avoid use for reducing the environmental load.
  • the guide ribs of conductive endless belts such as the above intermediate transfer belts are: ⁇ Flexibility (prevention of wrinkles and prevention of bending fatigue) ⁇ Abrasion resistance (prevention of abrasion powder) ⁇ Low coefficient of friction (prevention of lifting and chattering by stick-slip)
  • Flexibility prevention of wrinkles and prevention of bending fatigue
  • Abrasion resistance prevention of abrasion powder
  • Low coefficient of friction prevention of lifting and chattering by stick-slip
  • the present invention has been made in view of the above circumstances, and has low impact resilience and excellent flexibility, and has a guide rib having good wear resistance and a low coefficient of friction, and has good running stability and running quietness.
  • An object is to provide a conductive endless belt that can be achieved.
  • the inventor has produced a conductive endless belt such as an intermediate transfer belt by projecting a guide rib along the circumferential direction on one surface side of an endless belt.
  • a conductive endless belt such as an intermediate transfer belt by projecting a guide rib along the circumferential direction on one surface side of an endless belt.
  • the present invention provides a conductive endless belt in which a guide rib extending in the circumferential direction is provided on at least one surface side of an endless belt, and the guide rib is formed using millable urethane rubber. Is to provide.
  • the conductive endless belt of the present invention uses millable urethane rubber to form guide ribs with excellent flexibility, wear resistance, and low friction coefficient. Therefore, it has good running stability, durability and running quietness.
  • the guide rib 32 of a conductive endless belt in which a guide rib 32 protrudes along the circumferential direction on one surface side (usually the inner peripheral surface) of an endless belt-shaped belt body 31 is millable. It is formed using urethane rubber.
  • millable urethane is a kneading type urethane that can be kneaded with a roll against liquid urethane (casting type) or thermoplastic urethane (injection type). Any of these may be used, but a polyester system is preferably used for applications where wear resistance is important, and a polyether system is preferably used for applications where flexibility is important.
  • the vulcanization system may be any of sulfur, peroxide, and isocyanate, but a peroxide vulcanization system is preferably used from the viewpoint of changes in urethane hardness over time and hardness variations.
  • Such a millable urethane rubber can be a commercially available product, such as Bayer “Miracene Series”, “Urepan Series”, NOK “Iron Rubber Series”, and the like.
  • an inorganic reinforcing material such as calcium carbonate, dexterous clay, silica, mica and an organic reinforcing material such as fine particle silicone powder can be added.
  • the impact resilience can be reduced or adjusted. In this case, although not particularly limited, the rebound resilience can be reduced or adjusted more favorably by using carbon black and these reinforcing materials in combination.
  • the amount of the reinforcing material added is appropriately set according to the type of the millable urethane rubber and the type of the reinforcing material to be added. Usually, the amount is 5 to 30 parts by mass, particularly 100 parts by mass of the millable urethane rubber. The amount is preferably 10 to 20 parts by mass.
  • the blending amount of carbon black is not particularly limited, but is usually 10 to 20 parts by mass, and preferably 10 to 15 parts by mass.
  • modifiers such as AC polyethylene, spherical silicone powder (for example, “Tospearl” manufactured by Nissho Sangyo Co., Ltd.), magnesium hydrogen carbonate, sodium hydrogen carbonate are added to reduce and adjust the friction coefficient.
  • AC polyethylene spherical silicone powder
  • spherical silicone powder for example, “Tospearl” manufactured by Nissho Sangyo Co., Ltd.
  • magnesium hydrogen carbonate sodium hydrogen carbonate
  • sodium hydrogen carbonate sodium hydrogen carbonate
  • the amount of AC polyethylene or spherical silicone powder added is appropriately set according to the type of millable urethane rubber and is not particularly limited, but normally, AC polyethylene is 5 per 100 parts by mass of millable urethane rubber.
  • the spherical silicone powder is preferably 2 to 10 parts by mass, particularly preferably 5 to 10 parts by mass.
  • modifiers such as triallyl isocyanurate (TAIC), plastorodin, zinc stearate, metal soap, octylbenzyl phthalate (OBP), benzoic acid ester (for example, “Benzoflex” manufactured by VELSICOL, USA), DIC, etc.
  • TAIC triallyl isocyanurate
  • OBP octylbenzyl phthalate
  • benzoic acid ester for example, “Benzoflex” manufactured by VELSICOL, USA
  • DIC DIC
  • plasticizers such as “W # 620” manufactured by the company and “DINA D-640A” manufactured by J-plus and other polycarbodiimides (hydrolysis inhibitors) can be added.
  • the guide rib 32 of the conductive endless belt of the present invention is formed using the above millable urethane rubber, the coefficient of friction can be reduced while achieving low rebound resilience.
  • conventional materials such as liquid urethane
  • the rubber becomes harder and the resilience becomes higher, causing rise and chatter noise.
  • this contradictory problem can be solved at the same time.
  • the hardness of the rubber composition forming the guide rib is preferably 50 to 80, particularly 60 to 70 as the durometer A hardness defined in JIS K6253. If the hardness is less than 50, the ribs are deformed easily when the belt is running, and the belt is likely to meander. It becomes sufficient, the turning radius becomes large, and it is easy to get on the pulley, and the chatter noise easily occurs due to the frictional force with the pulley.
  • the guide rib 32 of the present invention can achieve a low coefficient of friction, but the specific coefficient of friction is not particularly limited. It is preferably 1.4 or less (pressure contact load 400 g, sliding speed 50 mm / sec), particularly 1.3 or less, more preferably 1 or less, with respect to polyacetal resin widely used as a material for traveling pulleys. It is possible to effectively prevent the belt from running up and the generation of wear powder.
  • the use of millable urethane rubber makes it possible to easily achieve the coefficient of friction while maintaining low rebound resilience, and more specifically, blending or blending of the above AC polyethylene or spherical silicone powder.
  • the above frictional resistance can be achieved by adjusting the amount, and further by shot blasting, embossing, buffing / polishing, etc. applied to the guide rib surface after formation.
  • the lower limit value of the friction coefficient is not particularly limited, but it is usually in the range where a stable friction coefficient can be obtained up to about 0.5 to 1, particularly up to about 0.7.
  • the guide rib 32 of the present invention can achieve low rebound resilience while achieving the low friction coefficient, specifically, the rebound measured according to JIS K6400-3 (2004). It is preferable to prepare such that the elastic modulus is 25 to 50%, particularly 35 to 40%. And in this invention, such low friction coefficient can be easily achieved with the said low rebound resilience by using millable urethane rubber, More specifically, the said inorganic type reinforcing material and organic type reinforcing material The low coefficient of friction can be achieved by adjusting the blending amount and adjusting the blending amount.
  • This guide rib 32 is kneaded by adding and compounding the above compounding agent and a vulcanizing agent such as sulfur, peroxide, isocyanate, etc. according to the kind of the millable urethane rubber, and press molding, extrusion molding, roll molding. It can be obtained by molding into a desired guide rib shape by injection molding or the like and heating at a predetermined temperature.
  • a vulcanizing agent such as sulfur, peroxide, isocyanate, etc.
  • the cross-sectional shape may be a shape other than the trapezoid such as a square shape or a triangular shape.
  • the guide rib 32 after formation can be subjected to known post-processing such as the above-described shot blasting, embossing, buffing / polishing, etc. on the surface thereof, and the above-mentioned friction coefficient can be achieved by these post-processing. You can also.
  • a known method can be adopted depending on the material of the belt main body 31.
  • a method using a double-sided adhesive tape, a one-component or two-component resin containing Alternatively, a method using a rubber adhesive, a hot melt bonding method, or the like can be appropriately employed.
  • the material and structure of the belt main body 31 are not limited, and a belt having a known material and structure can be used as the belt main body 31 according to the use of the belt.
  • Examples 1 to 9 Each compounding agent shown in Table 1 was mixed and kneaded at 60 ° C. for 15 minutes using a kneader kneading machine to prepare a rubber composition, which was roll-formed and heated to 150 ° C. to be cured. A guide rib member having a rectangular parallelepiped shape with a thickness of 5 mm and a thickness of 1.5 mm was produced.
  • Mirable Urethane Bayer "Miracene HT" * 2 TAIC / OBP: triallyl isocyanurate / octyl benzyl phthalate * 3 Tospearl 2000: spherical silicone powder manufactured by Nissho Sangyo Co., Ltd. * 4 Stavazol P: hydrolysis inhibitor manufactured by Yoko Hiraizumi * 5 Perhexa 3M-40: Peroxide vulcanizing agent manufactured by Sanshin Chemical Industry Co., Ltd.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L’invention concerne une bande sans fin conductrice (3), une nervure de guidage (32) faisant saillie dans la direction circonférentielle étant fournie sur au moins une face de celle-ci, avec laquelle il est possible de former une nervure de guidage de flexibilité supérieure et de faible résilience aux impacts, qui a une excellente résistance à l’usure et un faible coefficient de frottement, et au moyen de laquelle une excellente stabilité en fonctionnement et un fonctionnement silencieux peuvent être obtenus en utilisant un caoutchouc d’uréthane broyable pour former la nervure de guidage susmentionnée (32).
PCT/JP2009/058318 2008-05-01 2009-04-28 Bande sans fin conductrice WO2009133871A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009801155543A CN102016728A (zh) 2008-05-01 2009-04-28 导电性环带

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008119511A JP2009271158A (ja) 2008-05-01 2008-05-01 導電性エンドレスベルト
JP2008-119511 2008-05-01

Publications (1)

Publication Number Publication Date
WO2009133871A1 true WO2009133871A1 (fr) 2009-11-05

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ID=41255087

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Application Number Title Priority Date Filing Date
PCT/JP2009/058318 WO2009133871A1 (fr) 2008-05-01 2009-04-28 Bande sans fin conductrice

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JP (1) JP2009271158A (fr)
CN (1) CN102016728A (fr)
WO (1) WO2009133871A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3466909A4 (fr) * 2016-05-31 2020-01-08 N.E. Chemcat Corporation Procédé de production d'une structure en nid d'abeille cylindrique à film et procédé de production de catalyseur
US11181849B2 (en) * 2017-06-28 2021-11-23 Hp Indigo B.V. Liquid electrostatic ink developer assembly
CN109627749B (zh) * 2018-12-27 2020-12-18 山东百多安医疗器械股份有限公司 一种铂金硫化混炼型聚氨酯及其制备方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6012546U (ja) * 1983-07-05 1985-01-28 住友ゴム工業株式会社 紙送り部のリタ−ド・ゴム
JPS6411143A (en) * 1987-07-03 1989-01-13 Nok Corp Thermoplastic elastomer composition
JPH0476052A (ja) * 1990-07-17 1992-03-10 Bridgestone Corp ウレタン系組成物
JP2000132001A (ja) * 1998-10-22 2000-05-12 Mitsubishi Chemicals Corp 電子写真装置用無端ベルトおよびその製造方法
JP2000356918A (ja) * 1999-06-15 2000-12-26 Nitto Denko Corp 電子写真記録装置用エンドレスベルト
JP2003098779A (ja) * 2001-09-20 2003-04-04 Ricoh Co Ltd エンドレスベルト走行装置及び画像形成装置
JP2005274774A (ja) * 2004-03-23 2005-10-06 Mitsuboshi Belting Ltd 転写ベルトの製造方法
JP2009047925A (ja) * 2007-08-20 2009-03-05 Shin Etsu Polymer Co Ltd ガイド部材、無端ベルト及び画像形成装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6012546U (ja) * 1983-07-05 1985-01-28 住友ゴム工業株式会社 紙送り部のリタ−ド・ゴム
JPS6411143A (en) * 1987-07-03 1989-01-13 Nok Corp Thermoplastic elastomer composition
JPH0476052A (ja) * 1990-07-17 1992-03-10 Bridgestone Corp ウレタン系組成物
JP2000132001A (ja) * 1998-10-22 2000-05-12 Mitsubishi Chemicals Corp 電子写真装置用無端ベルトおよびその製造方法
JP2000356918A (ja) * 1999-06-15 2000-12-26 Nitto Denko Corp 電子写真記録装置用エンドレスベルト
JP2003098779A (ja) * 2001-09-20 2003-04-04 Ricoh Co Ltd エンドレスベルト走行装置及び画像形成装置
JP2005274774A (ja) * 2004-03-23 2005-10-06 Mitsuboshi Belting Ltd 転写ベルトの製造方法
JP2009047925A (ja) * 2007-08-20 2009-03-05 Shin Etsu Polymer Co Ltd ガイド部材、無端ベルト及び画像形成装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TETSUO YOKOYAMA: "Polyurethane rubber no Rikigaku Tokusei", JOURNAL OF THE SOCIETY OF RUBBER INDUSTRY, vol. 50, no. 12, 1977, pages 782 - 790 *

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Publication number Publication date
CN102016728A (zh) 2011-04-13
JP2009271158A (ja) 2009-11-19

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