CA2105255A1 - Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device - Google Patents

Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device

Info

Publication number
CA2105255A1
CA2105255A1 CA2105255A CA2105255A CA2105255A1 CA 2105255 A1 CA2105255 A1 CA 2105255A1 CA 2105255 A CA2105255 A CA 2105255A CA 2105255 A CA2105255 A CA 2105255A CA 2105255 A1 CA2105255 A1 CA 2105255A1
Authority
CA
Canada
Prior art keywords
developing
rotation
attaching
photosensitive member
transfer 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
CA2105255A
Other languages
French (fr)
Other versions
CA2105255C (en
Inventor
Yoshiaki Okano
Hiroshi Hashizume
Hirotaka Fukuyama
Kouichirou Satou
Tetsuya Nakamura
Satoshi Katagata
Michihisa Iguchi
Seiji Arai
Chinobu Sakai
Takahito Kabai
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.)
Toshiba Corp
Original Assignee
Individual
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
Priority claimed from JP4232408A external-priority patent/JPH0683217A/en
Priority claimed from JP4232405A external-priority patent/JP2983112B2/en
Priority claimed from JP4234611A external-priority patent/JP3012742B2/en
Application filed by Individual filed Critical Individual
Publication of CA2105255A1 publication Critical patent/CA2105255A1/en
Application granted granted Critical
Publication of CA2105255C publication Critical patent/CA2105255C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • 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
    • G03G15/1665—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 by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
    • G03G15/167—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 by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer
    • G03G15/1675—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 by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer with means for controlling the bias applied in the transfer nip

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

At start of rotation of a photosensitive drum, rotation of a developing roller caused by a developing/
register rollers driver is kept stopped until a time required for a predetermined point on the photosensitive member, which was located at a charging position when charging thereof by a charging device was started, to reach a development position elapses, and thereafter the developing roller is rotated by the developing/register rollers driver. When the predetermined point on the photosensitive member, which was located at the developing position when at least rotation of the photosensitive member was started, passes the transfer position, a roller cleaning voltage having the same polarity as the charge polarity of toner is applied to a transfer roller.
CA002105255A 1992-08-31 1993-08-31 Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device Expired - Fee Related CA2105255C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP4232408A JPH0683217A (en) 1992-08-31 1992-08-31 Electrophotographic recorder
JP4232405A JP2983112B2 (en) 1992-08-31 1992-08-31 Electrophotographic recording device
JP4-232408 1992-08-31
JP4-232405 1992-08-31
JP4-234611 1992-09-02
JP4234611A JP3012742B2 (en) 1992-09-02 1992-09-02 Electrophotographic equipment

Publications (2)

Publication Number Publication Date
CA2105255A1 true CA2105255A1 (en) 1994-03-01
CA2105255C CA2105255C (en) 1999-08-03

Family

ID=27331870

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002105255A Expired - Fee Related CA2105255C (en) 1992-08-31 1993-08-31 Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device

Country Status (2)

Country Link
US (1) US5692232A (en)
CA (1) CA2105255C (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100199474B1 (en) * 1996-06-12 1999-06-15 김광호 Method for preventing the back paper from being polluted for a laser printer's manual feeding
JP2872121B2 (en) * 1996-07-08 1999-03-17 新潟日本電気株式会社 Image forming apparatus and transfer method
US6185387B1 (en) * 1997-05-09 2001-02-06 Canon Kabushiki Kaisha Image forming apparatus
US5970279A (en) * 1997-06-02 1999-10-19 Canon Kabushiki Kaisha Image forming apparatus
JP3389472B2 (en) * 1997-09-04 2003-03-24 シャープ株式会社 One-component toner developing device
JP3279523B2 (en) * 1998-07-13 2002-04-30 キヤノン株式会社 Image forming device
DE10007885B4 (en) * 1999-02-22 2016-08-18 Kyocera Corp. Image forming method and image forming apparatus
JP4737349B2 (en) * 1999-02-26 2011-07-27 ブラザー工業株式会社 Image forming apparatus
JP3744485B2 (en) * 2002-11-05 2006-02-08 ブラザー工業株式会社 Image forming apparatus
US20050275875A1 (en) * 2004-05-27 2005-12-15 International Business Machines Corporation System and method for printer-side print queue priority self-monitoring
US8391741B2 (en) * 2009-07-21 2013-03-05 Sharp Kabushiki Kaisha Image forming system
JP2014016479A (en) * 2012-07-09 2014-01-30 Fuji Xerox Co Ltd Image forming apparatus and bias power supply device
US9244380B2 (en) * 2012-08-08 2016-01-26 Canon Kabushiki Kaisha Image forming apparatus
JP2014112212A (en) * 2012-11-01 2014-06-19 Canon Inc Image forming device
JP6160271B2 (en) * 2012-11-30 2017-07-12 株式会社リコー Image forming apparatus
CN104317176A (en) * 2014-09-29 2015-01-28 韩进龙 Continuous toner supply toner cartridge and image forming device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214174A (en) * 1982-06-08 1983-12-13 Canon Inc Picture recording device
FR2613501A1 (en) * 1987-03-31 1988-10-07 Brother Ind Ltd IMAGE RECORDING SYSTEM THAT CAN USE A NEGATIVE ORIGINAL AS WELL AS A POSITIVE ORIGINAL TO PERFORM REPRODUCTION
JPH01291273A (en) * 1988-05-18 1989-11-22 Canon Inc Image forming device
JPH02308282A (en) * 1989-05-24 1990-12-21 Toshiba Corp Image forming device
US5239345A (en) * 1990-03-06 1993-08-24 Oki Electric Industry Co., Ltd. Image forming apparatus having function of dust removal
US5182604A (en) * 1990-03-17 1993-01-26 Canon Kabushiki Kaisha Transfer roller with voltage polarity control
JP3001611B2 (en) * 1990-05-31 2000-01-24 株式会社東芝 Developing device
JPH04118678A (en) * 1990-09-10 1992-04-20 Seiko Epson Corp Developing method
JPH05273820A (en) * 1992-03-27 1993-10-22 Kyocera Corp Image forming device
JP3221045B2 (en) * 1992-04-03 2001-10-22 キヤノン株式会社 Image forming device

Also Published As

Publication number Publication date
CA2105255C (en) 1999-08-03
US5692232A (en) 1997-11-25

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed