EP0973071A3 - Method of using an image forming apparatus - Google Patents

Method of using an image forming apparatus Download PDF

Info

Publication number
EP0973071A3
EP0973071A3 EP99304271A EP99304271A EP0973071A3 EP 0973071 A3 EP0973071 A3 EP 0973071A3 EP 99304271 A EP99304271 A EP 99304271A EP 99304271 A EP99304271 A EP 99304271A EP 0973071 A3 EP0973071 A3 EP 0973071A3
Authority
EP
European Patent Office
Prior art keywords
belt
image
magnetic roller
images
image density
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.)
Withdrawn
Application number
EP99304271A
Other languages
German (de)
French (fr)
Other versions
EP0973071A2 (en
Inventor
Robert Frans Louisa Janssens
Luc Karel Maria Van Aken
William Constant Maria Waterschoot
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.)
Xeikon Manufacturing NV
Original Assignee
Xeikon NV
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 Xeikon NV filed Critical Xeikon NV
Priority to EP99304271A priority Critical patent/EP0973071A3/en
Publication of EP0973071A2 publication Critical patent/EP0973071A2/en
Publication of EP0973071A3 publication Critical patent/EP0973071A3/en
Withdrawn legal-status Critical Current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
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/754—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to band, e.g. tensioning
    • 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
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
    • G03G15/0907—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush with bias voltage
    • 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
    • G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
    • G03G2215/0167—Apparatus for electrophotographic processes for producing multicoloured copies single electrographic recording member
    • G03G2215/0174—Apparatus for electrophotographic processes for producing multicoloured copies single electrographic recording member plural rotations of recording member to produce multicoloured copy
    • G03G2215/018—Linearly moving set of developing units, one at a time adjacent the recording member

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)

Abstract

A plurality of electrostatic images are formed on a moving tensioned belt (26) comprising an electrically conductive base (58) having a non-conductive image-carrying surface layer (59). The images are developed by passing the belt through a plurality of toner development stations, each of which includes a development unit (35, 36, 37, 38) including a magnetic roller (51) and a backing member (53), in opposed position to the magnetic roller (51), over which the belt (26) passes. Under non-ideal conditions (defined in the text), the image quality in terms of image density and uniformity of image density and rendition of sharp image transitions, is substantially improved by using an alternating electrical field between the magnetic roller (51) and the belt (26), the peak-to-peak voltage of which is greater than 800 volts.
EP99304271A 1998-07-14 1999-06-01 Method of using an image forming apparatus Withdrawn EP0973071A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99304271A EP0973071A3 (en) 1998-07-14 1999-06-01 Method of using an image forming apparatus

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP98305581 1998-07-14
EP98305581 1998-07-14
EP99304271A EP0973071A3 (en) 1998-07-14 1999-06-01 Method of using an image forming apparatus

Publications (2)

Publication Number Publication Date
EP0973071A2 EP0973071A2 (en) 2000-01-19
EP0973071A3 true EP0973071A3 (en) 2000-07-05

Family

ID=26151337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99304271A Withdrawn EP0973071A3 (en) 1998-07-14 1999-06-01 Method of using an image forming apparatus

Country Status (1)

Country Link
EP (1) EP0973071A3 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60164778A (en) * 1984-02-07 1985-08-27 Matsushita Electric Ind Co Ltd electrophotographic copying device
EP0424137A2 (en) * 1989-10-18 1991-04-24 Konica Corporation Color image forming apparatus
EP0625734A1 (en) * 1993-05-20 1994-11-23 Eastman Kodak Company Method and apparatus for developing an electrostatic image using a two component developer
US5652648A (en) * 1993-12-09 1997-07-29 Xerox Corporation Negative wrap back up roll adjacent the transfer nip
WO1998007073A1 (en) * 1996-08-09 1998-02-19 Agfa-Gevaert Naamloze Vennootschap Electrostatic colour printing apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5614242A (en) * 1979-07-16 1981-02-12 Canon Inc Electrostatic developing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60164778A (en) * 1984-02-07 1985-08-27 Matsushita Electric Ind Co Ltd electrophotographic copying device
EP0424137A2 (en) * 1989-10-18 1991-04-24 Konica Corporation Color image forming apparatus
EP0625734A1 (en) * 1993-05-20 1994-11-23 Eastman Kodak Company Method and apparatus for developing an electrostatic image using a two component developer
US5652648A (en) * 1993-12-09 1997-07-29 Xerox Corporation Negative wrap back up roll adjacent the transfer nip
WO1998007073A1 (en) * 1996-08-09 1998-02-19 Agfa-Gevaert Naamloze Vennootschap Electrostatic colour printing apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 009 (P - 420)<2066> 14 January 1986 (1986-01-14) *

Also Published As

Publication number Publication date
EP0973071A2 (en) 2000-01-19

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