CA2107190A1 - Maintaining Precise Electrostatic Control Using Two ESVS - Google Patents

Maintaining Precise Electrostatic Control Using Two ESVS

Info

Publication number
CA2107190A1
CA2107190A1 CA 2107190 CA2107190A CA2107190A1 CA 2107190 A1 CA2107190 A1 CA 2107190A1 CA 2107190 CA2107190 CA 2107190 CA 2107190 A CA2107190 A CA 2107190A CA 2107190 A1 CA2107190 A1 CA 2107190A1
Authority
CA
Canada
Prior art keywords
esvs
electrostatic control
maintaining precise
readings
precise electrostatic
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
CA 2107190
Other languages
French (fr)
Other versions
CA2107190C (en
Inventor
Mark A. Scheuer
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.)
Xerox Corp
Original Assignee
Xerox 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
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of CA2107190A1 publication Critical patent/CA2107190A1/en
Application granted granted Critical
Publication of CA2107190C publication Critical patent/CA2107190C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
    • G03G15/5037—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor the characteristics being an electrical parameter, e.g. voltage
    • 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
    • G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
    • 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
    • G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
    • G03G15/0105—Details of unit
    • G03G15/0121—Details of unit for developing
    • 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
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0495—Plural charge levels of latent image produced, e.g. trilevel

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Color Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

Erroneous voltage readings of Electrostatic Voltmeters (ESVs), which have become contaminated by charged particles (i.e. toner) from developer housings used for developing latent images on a photoreceptor surface, are negated by adjusting the readings of the ESVs to compensate for the contamination of the ESVs. Additionally, The developer housing biases are adjusted by an amount equal to the difference between the voltages measured by the ESVs thereby insuring proper development and cleaning fields during development.
CA 2107190 1992-12-07 1993-09-28 Maintaining precise electrostatic control using two esvs Expired - Fee Related CA2107190C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US98640092A 1992-12-07 1992-12-07
US986400 1992-12-07

Publications (2)

Publication Number Publication Date
CA2107190A1 true CA2107190A1 (en) 1994-06-08
CA2107190C CA2107190C (en) 1996-10-01

Family

ID=25532376

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2107190 Expired - Fee Related CA2107190C (en) 1992-12-07 1993-09-28 Maintaining precise electrostatic control using two esvs

Country Status (6)

Country Link
EP (1) EP0601801B1 (en)
JP (1) JP2778906B2 (en)
BR (1) BR9304957A (en)
CA (1) CA2107190C (en)
DE (1) DE69307111T2 (en)
MX (1) MX9307527A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1078688A (en) * 1996-09-05 1998-03-24 Hitachi Ltd Color image forming device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107555A (en) * 1981-12-22 1983-06-27 Canon Inc Color copying device
JP2927808B2 (en) * 1988-03-22 1999-07-28 株式会社日立製作所 Electrostatic recording apparatus and photoreceptor life evaluation method
US4879577A (en) * 1988-04-19 1989-11-07 International Business Machines Corporation Method and apparatus for controlling the electrostatic parameters of an electrophotographic reproduction device
US5138378A (en) * 1991-09-05 1992-08-11 Xerox Corporation Electrostatic target recalculation in a xerographic imaging apparatus
US5119131A (en) * 1991-09-05 1992-06-02 Xerox Corporation Electrostatic voltmeter (ESV) zero offset adjustment

Also Published As

Publication number Publication date
JP2778906B2 (en) 1998-07-23
DE69307111D1 (en) 1997-02-13
CA2107190C (en) 1996-10-01
DE69307111T2 (en) 1997-07-03
EP0601801B1 (en) 1997-01-02
EP0601801A3 (en) 1995-09-13
MX9307527A (en) 1994-06-30
JPH06208275A (en) 1994-07-26
EP0601801A2 (en) 1994-06-15
BR9304957A (en) 1994-06-21

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed