EP1282015A3 - Fixing apparatus for an image forming apparatus - Google Patents

Fixing apparatus for an image forming apparatus Download PDF

Info

Publication number
EP1282015A3
EP1282015A3 EP02025038A EP02025038A EP1282015A3 EP 1282015 A3 EP1282015 A3 EP 1282015A3 EP 02025038 A EP02025038 A EP 02025038A EP 02025038 A EP02025038 A EP 02025038A EP 1282015 A3 EP1282015 A3 EP 1282015A3
Authority
EP
European Patent Office
Prior art keywords
heaters
fixing apparatus
deactivation
image forming
controlled
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
EP02025038A
Other languages
German (de)
French (fr)
Other versions
EP1282015B1 (en
EP1282015A2 (en
Inventor
Yukio Noguchi
Kouji Shirasugi
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
Priority claimed from JP34732596A external-priority patent/JP3451469B2/en
Priority claimed from JP34732496A external-priority patent/JP3455384B2/en
Priority claimed from JP34732396A external-priority patent/JP3423555B2/en
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of EP1282015A2 publication Critical patent/EP1282015A2/en
Publication of EP1282015A3 publication Critical patent/EP1282015A3/en
Application granted granted Critical
Publication of EP1282015B1 publication Critical patent/EP1282015B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03G15/20—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
    • G03G15/2039—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature
    • 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
    • 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
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00717—Detection of physical properties
    • G03G2215/0078—Detection of physical properties of opening of structural part

Abstract

A fixing apparatus has heaters (2, 3) to provide heat to fix a toner image on print paper. The heaters are intermittently activated to maintain the fixing apparatus at a substantially constant temperature. The heaters are activated by a predetermined voltage (Vf). Deactivation of the heaters (2, 3) is controlled by providing a low voltage immediately before the heaters are completely turned off so that a rate of change in a current flowing to the heaters is reduced. A timing of deactivation of each of the heaters may be controlled so that a start time of deactivation of the heaters (2, 3) differs from each other. The heaters (3) excluding at least one (2) of the heaters (2, 3) may be maintained to be deactivated when the fixing apparatus is in a predetermined operational state such as a waiting state or pre-heating state.
EP02025038A 1996-01-17 1997-01-14 Fixing apparatus for an image forming apparatus Expired - Lifetime EP1282015B1 (en)

Applications Claiming Priority (17)

Application Number Priority Date Filing Date Title
JP550796 1996-01-17
JP550796 1996-01-17
JP2912896 1996-02-16
JP2912896 1996-02-16
JP4611396 1996-03-04
JP4611396 1996-03-04
JP6069896 1996-03-18
JP6069896 1996-03-18
JP32823996 1996-12-09
JP32823996 1996-12-09
JP34732596 1996-12-26
JP34732596A JP3451469B2 (en) 1996-01-17 1996-12-26 Fixing device
JP34732396 1996-12-26
JP34732496A JP3455384B2 (en) 1996-02-16 1996-12-26 Fixing device
JP34732396A JP3423555B2 (en) 1996-03-04 1996-12-26 Fixing device
JP34732496 1996-12-26
EP19970100465 EP0785487B1 (en) 1996-01-17 1997-01-14 Fixing apparatus for an image forming apparatus

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP19970100465 Division EP0785487B1 (en) 1996-01-17 1997-01-14 Fixing apparatus for an image forming apparatus

Publications (3)

Publication Number Publication Date
EP1282015A2 EP1282015A2 (en) 2003-02-05
EP1282015A3 true EP1282015A3 (en) 2003-03-19
EP1282015B1 EP1282015B1 (en) 2005-05-11

Family

ID=27571556

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19970100465 Expired - Lifetime EP0785487B1 (en) 1996-01-17 1997-01-14 Fixing apparatus for an image forming apparatus
EP02025038A Expired - Lifetime EP1282015B1 (en) 1996-01-17 1997-01-14 Fixing apparatus for an image forming apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19970100465 Expired - Lifetime EP0785487B1 (en) 1996-01-17 1997-01-14 Fixing apparatus for an image forming apparatus

Country Status (3)

Country Link
EP (2) EP0785487B1 (en)
DE (2) DE69726323T2 (en)
ES (2) ES2210406T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4786417B2 (en) 2006-05-26 2011-10-05 株式会社リコー FIXING DEVICE, IMAGE FORMING DEVICE, HEATING CONTROL METHOD, AND HEATING CONTROL DEVICE

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6087377A (en) * 1983-10-20 1985-05-17 Canon Inc Heat fixing device
JPS6087378A (en) * 1983-10-20 1985-05-17 Canon Inc Heat fixing device
US4994852A (en) * 1987-08-18 1991-02-19 Minolta Camera Kabushiki Kaisha Image forming apparatus having a malfunction detection device and power shutdown therefor
JPH04168468A (en) * 1990-11-01 1992-06-16 Canon Inc Image forming device
EP0564420A2 (en) * 1992-03-31 1993-10-06 Canon Kabushiki Kaisha Image heating device capable of controlling activation of plural heaters
US5329343A (en) * 1991-05-14 1994-07-12 Fuji Xerox Co., Ltd. Temperature control method and fixing apparatus
JPH06236128A (en) * 1993-02-10 1994-08-23 Canon Inc Picture forming device, thermal fixing device, and ceramic heater for thermal fixing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02129681A (en) * 1988-11-09 1990-05-17 Nec Niigata Ltd Fixing device in electrophotographic printer
JPH03185482A (en) * 1989-12-15 1991-08-13 Canon Inc Fixing device
PH30413A (en) 1992-03-26 1997-05-09 Boehringer Ingelheim Italia Crystalline forms of endo-2,3-dihydro-n-(8-methyl)-8-azabicyclo-(3,2,1)oct-3-yl)-2-oxo-1h-benzimidazole-1-carboxamides
JP3387684B2 (en) * 1995-02-27 2003-03-17 キヤノン株式会社 Image recording device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6087377A (en) * 1983-10-20 1985-05-17 Canon Inc Heat fixing device
JPS6087378A (en) * 1983-10-20 1985-05-17 Canon Inc Heat fixing device
US4994852A (en) * 1987-08-18 1991-02-19 Minolta Camera Kabushiki Kaisha Image forming apparatus having a malfunction detection device and power shutdown therefor
JPH04168468A (en) * 1990-11-01 1992-06-16 Canon Inc Image forming device
US5329343A (en) * 1991-05-14 1994-07-12 Fuji Xerox Co., Ltd. Temperature control method and fixing apparatus
EP0564420A2 (en) * 1992-03-31 1993-10-06 Canon Kabushiki Kaisha Image heating device capable of controlling activation of plural heaters
JPH06236128A (en) * 1993-02-10 1994-08-23 Canon Inc Picture forming device, thermal fixing device, and ceramic heater for thermal fixing

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 232 (P - 389) 18 September 1985 (1985-09-18) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 476 (P - 1430) 5 October 1992 (1992-10-05) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 621 (P - 1832) 25 November 1994 (1994-11-25) *

Also Published As

Publication number Publication date
EP0785487A3 (en) 1998-03-25
ES2210406T3 (en) 2004-07-01
ES2240637T3 (en) 2005-10-16
DE69726323T2 (en) 2004-05-27
DE69726323D1 (en) 2004-01-08
EP0785487B1 (en) 2003-11-26
EP1282015B1 (en) 2005-05-11
EP0785487A2 (en) 1997-07-23
DE69733288D1 (en) 2005-06-16
DE69733288T2 (en) 2006-01-26
EP1282015A2 (en) 2003-02-05

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