EP2541339A3 - Fixing device and image forming apparatus employing same - Google Patents

Fixing device and image forming apparatus employing same Download PDF

Info

Publication number
EP2541339A3
EP2541339A3 EP12171711.0A EP12171711A EP2541339A3 EP 2541339 A3 EP2541339 A3 EP 2541339A3 EP 12171711 A EP12171711 A EP 12171711A EP 2541339 A3 EP2541339 A3 EP 2541339A3
Authority
EP
European Patent Office
Prior art keywords
fixing device
pair
image forming
forming apparatus
apparatus employing
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
EP12171711.0A
Other languages
German (de)
French (fr)
Other versions
EP2541339B1 (en
EP2541339A2 (en
Inventor
Masafumi Takahira
Haruo Hashimoto
Kazuyoshi Kondo
Genta Hagiwara
Kaoru Tada
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 EP2541339A2 publication Critical patent/EP2541339A2/en
Publication of EP2541339A3 publication Critical patent/EP2541339A3/en
Application granted granted Critical
Publication of EP2541339B1 publication Critical patent/EP2541339B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
    • G03G15/2032—Retractable heating or pressure unit
    • 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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
    • G03G15/2028—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with means for handling the copy material in the fixing nip, e.g. introduction guides, stripping means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)

Abstract

A fixing device (16) includes a pair of rollers (30) forming a fixing nip (N) therebetween and a nip pressure adjusting unit (50) including a pair of first and second operation levers (45a, 45b) disposed near widthwise ends of the pair of rollers (30) to adjust a nip pressure generated in the fixing nip (N) by moving the pair of first and second operation levers (45a, 45b). The nip pressure adjusting unit (50) further includes a first movement member (51) cooperating with the first operation lever (45a) to perform a first movement, a second movement member (52) cooperating with the second operation lever (45b) to perform a second movement, and a detector (53) to detect both of the first and second movements being performed and generate a turn on signal. The fixing device (16) becomes operable only when the turn on signal is generated by the detector (53).
EP12171711.0A 2011-06-28 2012-06-13 Fixing device and image forming apparatus employing same Active EP2541339B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011143298A JP5769072B2 (en) 2011-06-28 2011-06-28 Fixing apparatus and image forming apparatus

Publications (3)

Publication Number Publication Date
EP2541339A2 EP2541339A2 (en) 2013-01-02
EP2541339A3 true EP2541339A3 (en) 2017-03-22
EP2541339B1 EP2541339B1 (en) 2019-10-02

Family

ID=46969957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12171711.0A Active EP2541339B1 (en) 2011-06-28 2012-06-13 Fixing device and image forming apparatus employing same

Country Status (2)

Country Link
EP (1) EP2541339B1 (en)
JP (1) JP5769072B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10333386A (en) * 1997-05-27 1998-12-18 Canon Inc Image forming device
US20020127022A1 (en) * 2001-03-07 2002-09-12 Noriaki Tanaka Image forming apparatus
US20080181662A1 (en) * 2007-01-29 2008-07-31 Samsung Electronics Co., Ltd. Apparatus for adjusting fixing pressure and image forming apparauts having the same
US20110097122A1 (en) * 2009-10-27 2011-04-28 Masami Okamoto Fixing device, image forming apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0519712A (en) 1991-07-16 1993-01-29 Toshiba Joho Seigyo Syst Kk Digital display device
JP4798085B2 (en) 2007-07-09 2011-10-19 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
JP5224870B2 (en) 2008-03-31 2013-07-03 キヤノン株式会社 Fixing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10333386A (en) * 1997-05-27 1998-12-18 Canon Inc Image forming device
US20020127022A1 (en) * 2001-03-07 2002-09-12 Noriaki Tanaka Image forming apparatus
US20080181662A1 (en) * 2007-01-29 2008-07-31 Samsung Electronics Co., Ltd. Apparatus for adjusting fixing pressure and image forming apparauts having the same
US20110097122A1 (en) * 2009-10-27 2011-04-28 Masami Okamoto Fixing device, image forming apparatus

Also Published As

Publication number Publication date
JP2013011685A (en) 2013-01-17
EP2541339B1 (en) 2019-10-02
JP5769072B2 (en) 2015-08-26
EP2541339A2 (en) 2013-01-02

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