EP0439145A3 - Charging member with a bridging electrode structure and charging device using same in a detachable process unit in an image forming apparatus - Google Patents

Charging member with a bridging electrode structure and charging device using same in a detachable process unit in an image forming apparatus Download PDF

Info

Publication number
EP0439145A3
EP0439145A3 EP19910100831 EP91100831A EP0439145A3 EP 0439145 A3 EP0439145 A3 EP 0439145A3 EP 19910100831 EP19910100831 EP 19910100831 EP 91100831 A EP91100831 A EP 91100831A EP 0439145 A3 EP0439145 A3 EP 0439145A3
Authority
EP
European Patent Office
Prior art keywords
image forming
forming apparatus
same
electrode structure
process unit
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
EP19910100831
Other versions
EP0439145B1 (en
EP0439145A2 (en
Inventor
Hiroyuki C/O Canon Kabushiki Kaisha Adachi
Norihisa C/O Canon Kabushiki Kaisha Hoshika
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of EP0439145A2 publication Critical patent/EP0439145A2/en
Publication of EP0439145A3 publication Critical patent/EP0439145A3/en
Application granted granted Critical
Publication of EP0439145B1 publication Critical patent/EP0439145B1/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
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0208—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus
    • G03G15/0216—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers
    • G03G15/0233—Structure, details of the charging member, e.g. chemical composition, surface properties
EP19910100831 1990-01-24 1991-01-23 Charging member with a bridging electrode structure and charging device using same in a detachable process unit in an image forming apparatus Expired - Lifetime EP0439145B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14095/90 1990-01-24
JP2014095A JP2767951B2 (en) 1990-01-24 1990-01-24 Contact charging member

Publications (3)

Publication Number Publication Date
EP0439145A2 EP0439145A2 (en) 1991-07-31
EP0439145A3 true EP0439145A3 (en) 1992-12-09
EP0439145B1 EP0439145B1 (en) 1996-09-04

Family

ID=11851556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910100831 Expired - Lifetime EP0439145B1 (en) 1990-01-24 1991-01-23 Charging member with a bridging electrode structure and charging device using same in a detachable process unit in an image forming apparatus

Country Status (3)

Country Link
EP (1) EP0439145B1 (en)
JP (1) JP2767951B2 (en)
DE (1) DE69121731T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439143A3 (en) * 1990-01-24 1992-12-09 Canon Kabushiki Kaisha Charging member featureing a cut edge, and charging device employing same for use in a detachable process unit in an image forming apparatus
JP3028617B2 (en) * 1991-02-06 2000-04-04 ミノルタ株式会社 Contact charging device
JP3339877B2 (en) * 1992-05-15 2002-10-28 ミノルタ株式会社 Contact charging device
JP5677068B2 (en) * 2010-12-14 2015-02-25 キヤノン株式会社 Charging member and image forming apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0308185A2 (en) * 1987-09-14 1989-03-22 Canon Kabushiki Kaisha A charging device
EP0312230A2 (en) * 1987-10-05 1989-04-19 Canon Kabushiki Kaisha An image forming apparatus
EP0439143A2 (en) * 1990-01-24 1991-07-31 Canon Kabushiki Kaisha Charging member featureing a cut edge, and charging device employing same for use in a detachable process unit in an image forming apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0308185A2 (en) * 1987-09-14 1989-03-22 Canon Kabushiki Kaisha A charging device
EP0312230A2 (en) * 1987-10-05 1989-04-19 Canon Kabushiki Kaisha An image forming apparatus
EP0439143A2 (en) * 1990-01-24 1991-07-31 Canon Kabushiki Kaisha Charging member featureing a cut edge, and charging device employing same for use in a detachable process unit in an image forming apparatus

Also Published As

Publication number Publication date
JP2767951B2 (en) 1998-06-25
JPH03217874A (en) 1991-09-25
EP0439145B1 (en) 1996-09-04
DE69121731D1 (en) 1996-10-10
DE69121731T2 (en) 1997-02-06
EP0439145A2 (en) 1991-07-31

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