EP1229403A3 - Image forming apparatus - Google Patents

Image forming apparatus Download PDF

Info

Publication number
EP1229403A3
EP1229403A3 EP02001962A EP02001962A EP1229403A3 EP 1229403 A3 EP1229403 A3 EP 1229403A3 EP 02001962 A EP02001962 A EP 02001962A EP 02001962 A EP02001962 A EP 02001962A EP 1229403 A3 EP1229403 A3 EP 1229403A3
Authority
EP
European Patent Office
Prior art keywords
photoconductive drum
away
recording paper
disposed
paper sheet
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.)
Withdrawn
Application number
EP02001962A
Other languages
German (de)
French (fr)
Other versions
EP1229403A2 (en
Inventor
Hirokazu Yamauchi
Tatsuya Inoue
Sinichi Takeda
Hiroshi Kida
Yoshiaki Masuda
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 JP2001027198A external-priority patent/JP3825976B2/en
Priority claimed from JP2001081590A external-priority patent/JP3735045B2/en
Priority claimed from JP2001081458A external-priority patent/JP2002276982A/en
Priority claimed from JP2001084528A external-priority patent/JP3648166B2/en
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of EP1229403A2 publication Critical patent/EP1229403A2/en
Publication of EP1229403A3 publication Critical patent/EP1229403A3/en
Withdrawn legal-status Critical Current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
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6555—Handling of sheet copy material taking place in a specific part of the copy material feeding path
    • G03G15/657—Feeding path after the transfer point and up to the fixing point, e.g. guides and feeding means for handling copy material carrying an unfused toner image
    • 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
    • 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
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6555—Handling of sheet copy material taking place in a specific part of the copy material feeding path
    • G03G15/6558—Feeding path after the copy sheet preparation and up to the transfer point, e.g. registering; Deskewing; Correct timing of sheet feeding to the transfer point
    • G03G15/6561—Feeding path after the copy sheet preparation and up to the transfer point, e.g. registering; Deskewing; Correct timing of sheet feeding to the transfer point for sheet registration
    • G03G15/6564—Feeding path after the copy sheet preparation and up to the transfer point, e.g. registering; Deskewing; Correct timing of sheet feeding to the transfer point for sheet registration with correct timing of sheet feeding

Landscapes

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

Abstract

A first control member (22) is disposed in a drum shaft (21) away from a photoconductive drum (12), and a second control member (23) is disposed in a roller shaft (25) away from a transfer roller (16). The first and second control members (22, 23) abut on each other at their circumferential surfaces. This helps reduce an amount of displacement resulting from an impact caused by insertion of a recording paper sheet (19) in between the photoconductive drum (12) and the transfer roller (16), and thereby reduce vibrations in the photoconductive drum (12). Consequently, a toner image formed on the photoconductive drum (12) and an unfixed toner image transferred onto the recording paper sheet (19) are not affected by vibrations, so that a high-quality image is obtained that is free from blurriness or irregularities.
EP02001962A 2001-02-02 2002-02-01 Image forming apparatus Withdrawn EP1229403A3 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2001027198 2001-02-02
JP2001027198A JP3825976B2 (en) 2001-02-02 2001-02-02 Image forming apparatus
JP2001081590A JP3735045B2 (en) 2001-03-21 2001-03-21 Image forming apparatus
JP2001081458 2001-03-21
JP2001081590 2001-03-21
JP2001081458A JP2002276982A (en) 2001-03-21 2001-03-21 Condensation-free ceiling cooling system
JP2001084528 2001-03-23
JP2001084528A JP3648166B2 (en) 2001-03-23 2001-03-23 Image forming apparatus

Publications (2)

Publication Number Publication Date
EP1229403A2 EP1229403A2 (en) 2002-08-07
EP1229403A3 true EP1229403A3 (en) 2007-12-26

Family

ID=27482023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02001962A Withdrawn EP1229403A3 (en) 2001-02-02 2002-02-01 Image forming apparatus

Country Status (1)

Country Link
EP (1) EP1229403A3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02165173A (en) * 1988-12-20 1990-06-26 Toshiba Corp Image forming device
US5515154A (en) * 1992-08-28 1996-05-07 Canon Kabushiki Kaisha Color image forming apparatus
JP2000250335A (en) * 1999-02-26 2000-09-14 Kyocera Mita Corp Transferring device by electrophotography
US6144822A (en) * 1998-10-13 2000-11-07 Ricoh Company, Ltd. Image forming apparatus having detachable transfer roller and discharge device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02165173A (en) * 1988-12-20 1990-06-26 Toshiba Corp Image forming device
US5515154A (en) * 1992-08-28 1996-05-07 Canon Kabushiki Kaisha Color image forming apparatus
US6144822A (en) * 1998-10-13 2000-11-07 Ricoh Company, Ltd. Image forming apparatus having detachable transfer roller and discharge device
JP2000250335A (en) * 1999-02-26 2000-09-14 Kyocera Mita Corp Transferring device by electrophotography
US6256472B1 (en) * 1999-02-26 2001-07-03 Kyocera Mita Corp. Transfer device in electrophotography

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 426 (P - 1105) 13 September 1990 (1990-09-13) *

Also Published As

Publication number Publication date
EP1229403A2 (en) 2002-08-07

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