DE19857823B4 - Optimieren der elektrophotographischen Entwicklung von Rändern - Google Patents

Optimieren der elektrophotographischen Entwicklung von Rändern Download PDF

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Publication number
DE19857823B4
DE19857823B4 DE19857823A DE19857823A DE19857823B4 DE 19857823 B4 DE19857823 B4 DE 19857823B4 DE 19857823 A DE19857823 A DE 19857823A DE 19857823 A DE19857823 A DE 19857823A DE 19857823 B4 DE19857823 B4 DE 19857823B4
Authority
DE
Germany
Prior art keywords
photoconductor
bias
developer
charger
toner
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.)
Expired - Fee Related
Application number
DE19857823A
Other languages
German (de)
English (en)
Other versions
DE19857823A1 (de
Inventor
John A. Thompson
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.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE19857823A1 publication Critical patent/DE19857823A1/de
Application granted granted Critical
Publication of DE19857823B4 publication Critical patent/DE19857823B4/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G03G15/065—Arrangements for controlling the potential of the developing electrode
    • 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
    • G03G15/0266—Arrangements for controlling the amount of charge
    • 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
    • G03G2215/00025—Machine control, e.g. regulating different parts of the machine
    • G03G2215/00029—Image density detection
    • G03G2215/00033—Image density detection on recording member
    • G03G2215/00037—Toner image detection
    • G03G2215/00042—Optical detection
    • 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
    • G03G2215/02—Arrangements for laying down a uniform charge
    • G03G2215/021—Arrangements for laying down a uniform charge by contact, friction or induction

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
DE19857823A 1998-05-29 1998-12-15 Optimieren der elektrophotographischen Entwicklung von Rändern Expired - Fee Related DE19857823B4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/087,430 US5899596A (en) 1998-05-29 1998-05-29 Optimization of electrophotographic edge development
US087430 1998-05-29

Publications (2)

Publication Number Publication Date
DE19857823A1 DE19857823A1 (de) 1999-12-09
DE19857823B4 true DE19857823B4 (de) 2005-01-05

Family

ID=22205152

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19857823A Expired - Fee Related DE19857823B4 (de) 1998-05-29 1998-12-15 Optimieren der elektrophotographischen Entwicklung von Rändern

Country Status (3)

Country Link
US (1) US5899596A (enExample)
JP (1) JPH11352760A (enExample)
DE (1) DE19857823B4 (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7035567B2 (en) * 2004-07-29 2006-04-25 Hewlett-Packard Development Company, L.P. Apparatus and method for reducing contamination of an image transfer device
US9513572B2 (en) 2013-01-30 2016-12-06 Hewlett-Packard Development Company, L.P. Control for a non-contact charging roller
JP6176529B2 (ja) * 2013-11-18 2017-08-09 株式会社リコー 画像形成装置
US10162282B2 (en) 2015-01-29 2018-12-25 Hp Indigo B.V. Electrostatic printing system with charged voltage dependent on developer voltage
TWI758950B (zh) * 2020-11-13 2022-03-21 大陸商昆山瑞創芯電子有限公司 應用於顯示面板的校準方法及校準裝置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0949544A2 (en) * 1998-04-09 1999-10-13 Canon Kabushiki Kaisha Image forming apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0640233B2 (ja) * 1984-04-13 1994-05-25 株式会社リコー 電子写真装置
US4647184A (en) * 1985-03-18 1987-03-03 Xerox Corporation Automatic setup apparatus for an electrophotographic printing machine
CN1038277C (zh) * 1987-12-28 1998-05-06 佳能公司 成象设备
JPH01285966A (ja) * 1988-05-13 1989-11-16 Konica Corp 現像装置
JP3221045B2 (ja) * 1992-04-03 2001-10-22 キヤノン株式会社 画像形成装置
JP3141309B2 (ja) * 1993-02-26 2001-03-05 キヤノン株式会社 磁性現像剤及び画像形成方法
JPH0883021A (ja) * 1994-09-14 1996-03-26 Konica Corp 画像形成装置
JP3491653B2 (ja) * 1995-09-29 2004-01-26 日立プリンティングソリューションズ株式会社 静電記録装置および静電記録方法
US5839020A (en) * 1997-02-11 1998-11-17 Eastman Kodak Company Method and apparatus for controlling production of full productivity accent color image formation
US5815768A (en) * 1997-02-28 1998-09-29 Hewlett-Packard Company Detection of toner depletion in an electrophotographic printing system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0949544A2 (en) * 1998-04-09 1999-10-13 Canon Kabushiki Kaisha Image forming apparatus

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JP 07-098-528 A mit engischsprachigem Abstract und engischsprachiger Computerübersetzung des JPO
JP 08-083 021 A mit engischsprachigem Abstract und engischsprachiger Computerübersetzung des JPO *
P 07-098-528 A mit engischsprachigem Abstract und engischsprachiger Computerübersetzung des JPO *

Also Published As

Publication number Publication date
DE19857823A1 (de) 1999-12-09
JPH11352760A (ja) 1999-12-24
US5899596A (en) 1999-05-04

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: HEWLETT-PACKARD CO. (N.D.GES.D.STAATES DELAWARE),

8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE

8364 No opposition during term of opposition
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20140701