EP1255165A2 - Beschichtungssystem und Verfahren zur Herstellung photoleitfähiger Elemente für Elektrophotographie - Google Patents

Beschichtungssystem und Verfahren zur Herstellung photoleitfähiger Elemente für Elektrophotographie Download PDF

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Publication number
EP1255165A2
EP1255165A2 EP02009305A EP02009305A EP1255165A2 EP 1255165 A2 EP1255165 A2 EP 1255165A2 EP 02009305 A EP02009305 A EP 02009305A EP 02009305 A EP02009305 A EP 02009305A EP 1255165 A2 EP1255165 A2 EP 1255165A2
Authority
EP
European Patent Office
Prior art keywords
coating
works
cores
coated
processing device
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP02009305A
Other languages
English (en)
French (fr)
Other versions
EP1255165B1 (de
EP1255165A3 (de
Inventor
Akihiro Iiyama
Yoshihiro Yamaguchi
Shuichi Tsunakawa
Sakae Suzuki
Go Egawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of EP1255165A2 publication Critical patent/EP1255165A2/de
Publication of EP1255165A3 publication Critical patent/EP1255165A3/de
Application granted granted Critical
Publication of EP1255165B1 publication Critical patent/EP1255165B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/05—Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
    • G03G5/0525—Coating methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
    • B05C3/09—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating separate articles

Definitions

  • the present invention relates to a coating system for forming films on the surfaces of various works and a system for producing photoconductive elements for electrophotographic image forming apparatuses.
  • An electrophotographic copier for example, includes a photoconductive element for forming a toner image thereon. After the surface of the photoconductive element has been uniformly charged to preselected polarity, a light beam scans the charged surface in accordance with image data to thereby form a latent image. Toner is deposited on the latent image for thereby forming a corresponding toner image. The toner image is transferred from the photoconductive element to a sheet or recording medium and then fixed thereon by heat and pressure. After the image transfer, cleaning means removes the toner left on the photoconductive element.
  • the photoconductive element is made up of a cylindrical, conductive core formed of, e.g., aluminum and a laminate formed on the core.
  • the laminate includes a photoconductive layer, an under layer, and a protection layer. While various methods including dip coating, spray coating and ring coating are available for forming such layers, dip coating is predominant because it is relatively easy to effect and has high productivity.
  • a coating liquid should preferably be absent on the end face of the conductive core to which other parts are expected to be connected. Dip coating, however, coats the entire core with a coating liquid and therefore must be followed by a step of removing the coating liquid from the end face of the core.
  • a conveyor conveys conductive cores to a gripping device mounted on an elevatable, slidable arm.
  • the gripping device grips the cores and then moves them to a position above a bath storing a coating liquid.
  • the arm is then lowered to dip the cores in the coating liquid. Subsequently, the arm is raised to lift the coated cores out of the bath at a preselected rate.
  • the arm is then moved to a position above an end processing device for removing films from the end faces of the cores. Thereafter, the cores are again loaded on the conveyor. Such a procedure constitutes a single cycle. The extra step of removing films from the end faces of the cores increases the tact time.
  • Japanese Patent Laid-Open Publication No. 3-48851 discloses a coating system including three arms.
  • a first arm grips cores and turns to a position above a bath storing a coating liquid.
  • the bath is then raised to coat the cores held by the first arm.
  • a second arm moves to a core gripping position and grips the next cores.
  • the first arm moves to an end processing device while the second arm moves to the position above the bath.
  • a third arm moves to the core gripping position.
  • the end processing device is raised to remove films from the end faces of the cores while the bath is raised to coat the cores held by the second arm.
  • the third arm grips the next cores.
  • This coating system however, has a problem that raising the bath and end processing device in the coating step and end processing step, respectively, makes the construction complicated.
  • Japanese Patent Laid-Open Publication No. 5-94028 teaches a coating system including two independent elevators.
  • a first elevator moves to a conveyor, grips cores positioned on the conveyor, and then moves to a position above a bath storing a coating liquid.
  • the cores are then lowered and dipped in the coating liquid.
  • the first elevator then places the coated cores at a position between the first elevator and a second elevator.
  • the second elevator grips the coated cores, turns to locate them above an end processing device, and then lowers the cores for thereby removing films from the end faces of the cores.
  • the first elevator has gripped other cores and started coating them.
  • the second elevator again turns to load the cores on the conveyor.
  • a coating system of the present invention includes a bath storing a coating liquid for coating desired works.
  • An end processing device removes films formed on the end faces of the works coated with the coating liquid.
  • At least two elevation devices are mounted on a single rotatable shaft each for gripping the works and selectively raising or lowering the works.
  • Works to be coated and works to be processed by the end processing device are replaced in position with each other to thereby effect coating and end face processing in parallel.
  • a coating system embodying the present invention is shown and generally designated by the reference numeral 1.
  • the coating system 1 is arranged along a conveyor 2 that conveys cylindrical, conductive cores for forming photoconductive elements in the form of drums.
  • the coating system 1 includes a base 3 on which a support shaft 5 is mounted via a rotation mechanism 4.
  • a first arm 6 and a second arm 7 are located at opposite sides of the support shaft 5 and spaced from each other by an angle of 180°.
  • a bath 9 and an end processing device 10 are also located at opposite sides of the support shaft 5 and spaced from each other by an angle of 180°.
  • the bath 9 stores a coating liquid 8 for forming photoconductive layers on the cores.
  • the arms 6 and 7 include a plurality of core grippers or work grippers 11 each.
  • the coating system further includes an elevation mechanism 12 for moving the first arm 6 and second arm 7 up and down.
  • the elevation mechanism 12 includes motors 13a and 13b for raising and lowering the arms 6 and 7, respectively.
  • Guide shafts 14a and 14b guide the arms 6 and 7, respectively.
  • Pulleys 15 and 16 are respectively positioned at the top and the bottom of the guide shaft 14a.
  • a plain belt 17 is passed over the pulleys 15 and 16.
  • pulleys 15 and 16 are respectively positioned at the top and the bottom of the other guide shaft 14b while a plain belt 17 is passed over the pulleys 15 and 16.
  • a balance weight 18 is affixed to each of the belts 17.
  • a plurality of conductive cores or works are loaded on a pallet in a vertical position.
  • the conveyor 2 conveys the pallet to a core gripping position 19.
  • the motor 13a is driven to lower the first arm 6, so that the grippers 11 mounted on the arm 6 grip the conductive cores.
  • the motor 13a is then driven in the reverse direction for raising the arm 6.
  • the balance weight 18 affixed to the plain belt 17, which moves the arm 16, reduces a load to act on the motor 13a.
  • the balance weight 8 reduces vibration to act on the arm 6 more than a timing belt and therefore allows the conductive cores to be raised and lowered without any vibration.
  • the rotation mechanism 4 turns the elevation mechanism 12 by 180° to replace the first arm 6 and second arm 7, positioning the arm 6 above the. bath 9.
  • the motor 13a is then driven to lower the arm 6 so as to dip the conductive cores held by the core grippers 11 in the coating liquid 8, which is stored in the bath 9.
  • the other motor 13b When the next pallet loaded with conductive cores arrives at the core gripping position 19, the other motor 13b is driven to lower the second arm 7, so that the grippers 11 mounted on the arm 7 grip the cores. The motor 13b is then driven in the reverse direction for raising the arm 7 and waits until the end of coating of the cores held by the first arm 6.
  • the motor 13a raises the arm 6 away from the bath 9. Subsequently, the rotation mechanism 4 again turns the elevation mechanism 12 by 180° so as to replace the arms 6 and 7 such that the arms 6 and 7 are positioned above the core gripping position 19 and bath 9, respectively. In this condition, the end processing device 10 is slid to a position above the core gripping position 19. Thereafter, the motor 13a again lowers the first arm 6 and allows the end processing device 10 to remove films from the end faces of the cores. At the same time, the motor 13b lowers the second arm 7 so as to dip the cores held by the arm 7 in the coating liquid 8.
  • the end processing device 10 removed the films from the end faces of the cores is again slid away from the core gripping position 19. Subsequently, the coated cores held by the first arm 6 are again loaded on the pallet positioned on the conveyor 2. The conveyor 2 then conveys the pallet away from the core gripping position 19. When the next pallet loaded with conductive cores is brought to the core gripping position 19, the core grippers of the arm 6 grip the cores and waits until the end of coating of the cores held by the arm 7. By repeating such a procedure, the system coats consecutive cores and removes films from the end faces of coated cores at the same time.
  • the present invention provides a coating system capable of reducing the tact time with a simple construction, and stably coating works while stably removing films from the end faces of coated works to thereby efficiently form high-quality films. Further, the coating system occupies a minimum of space and allows the works with processed end faces to be easily conveyed out of the system. In addition, the coating system reduces the tact time of a production line for producing photoconductive elements for thereby increasing yield.
  • the present invention comprises the following embodiments:

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Coating Apparatus (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP20020009305 2001-05-01 2002-04-30 Beschichtungssystem und Verfahren zur Herstellung photoleitfähiger Elemente für Elektrophotographie Expired - Lifetime EP1255165B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001133768 2001-05-01
JP2001133768A JP2002326047A (ja) 2001-05-01 2001-05-01 塗工装置と電子写真感光体の製造装置及び製造方法

Publications (3)

Publication Number Publication Date
EP1255165A2 true EP1255165A2 (de) 2002-11-06
EP1255165A3 EP1255165A3 (de) 2003-01-29
EP1255165B1 EP1255165B1 (de) 2008-03-12

Family

ID=18981568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020009305 Expired - Lifetime EP1255165B1 (de) 2001-05-01 2002-04-30 Beschichtungssystem und Verfahren zur Herstellung photoleitfähiger Elemente für Elektrophotographie

Country Status (3)

Country Link
EP (1) EP1255165B1 (de)
JP (1) JP2002326047A (de)
DE (1) DE60225501T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015084490A1 (en) * 2013-12-03 2015-06-11 Advenira Enterprises, Inc. Coating material distribution using simultaneous rotation and vibration
CN113634435A (zh) * 2021-08-16 2021-11-12 浙江凯立特医疗器械有限公司 一种植入性生物传感器生产用涂膜结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100474861B1 (ko) * 2002-11-15 2005-03-11 이건테크놀로지 주식회사 게터제 도포장치

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59102780A (ja) * 1982-12-01 1984-06-13 三菱電機株式会社 エレベ−タ装置
JPH0648385B2 (ja) * 1985-03-07 1994-06-22 キヤノン株式会社 電子写真感光体製造装置
JPH0246734U (de) * 1988-09-22 1990-03-30
JPH0711821Y2 (ja) * 1989-08-11 1995-03-22 岩谷産業株式会社 小物品の部分コーティング装置
US5098749A (en) * 1990-05-04 1992-03-24 Illinois Tool Works Inc. Workpiece-treating system and related method
JP3010374B2 (ja) * 1990-11-15 2000-02-21 コニカ株式会社 電子写真感光体の製造方法
JP2903912B2 (ja) * 1992-11-10 1999-06-14 株式会社ダイフク 入出庫用搬送装置
JP3412270B2 (ja) * 1994-07-27 2003-06-03 株式会社ダイフク 昇降装置の吊下ベルト弛み検出装置
DE19648341A1 (de) * 1996-11-22 1998-05-28 Lippert Masch Stahlbau J Rundtisch-Glasiermaschine
HK1039105B (zh) * 1998-02-26 2008-03-14 奥蒂斯电梯公司 带有位於顶部的驱动电机的电梯系统
JP2000169061A (ja) * 1998-12-03 2000-06-20 Mitsubishi Electric Building Techno Service Co Ltd エレベーターかご室構成部材の交換工事方法及び同補助具
JP4021086B2 (ja) * 1999-01-28 2007-12-12 株式会社日立プラントテクノロジー 昇降装置
JP4040248B2 (ja) * 2000-11-10 2008-01-30 株式会社リコー 電子写真感光体用の円筒基体の浸漬塗布及び塗膜除去装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015084490A1 (en) * 2013-12-03 2015-06-11 Advenira Enterprises, Inc. Coating material distribution using simultaneous rotation and vibration
US9272306B2 (en) 2013-12-03 2016-03-01 Advenira Enterprises, Inc. Coating material distribution using simultaneous rotation and vibration
RU2610496C1 (ru) * 2013-12-03 2017-02-13 Адвенира Энтерпрайзис, Инк. Распределение материала покрытия посредством одновременного вращения и вибрирования
CN113634435A (zh) * 2021-08-16 2021-11-12 浙江凯立特医疗器械有限公司 一种植入性生物传感器生产用涂膜结构

Also Published As

Publication number Publication date
DE60225501D1 (de) 2008-04-24
EP1255165B1 (de) 2008-03-12
DE60225501T2 (de) 2009-04-23
JP2002326047A (ja) 2002-11-12
EP1255165A3 (de) 2003-01-29

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