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EP0895867A3 - A device for direct electrostatic printing with an edge electrode and an AC-field on the surface of the toner delivery means - Google Patents

A device for direct electrostatic printing with an edge electrode and an AC-field on the surface of the toner delivery means Download PDF

Info

Publication number
EP0895867A3
EP0895867A3 EP98202302A EP98202302A EP0895867A3 EP 0895867 A3 EP0895867 A3 EP 0895867A3 EP 98202302 A EP98202302 A EP 98202302A EP 98202302 A EP98202302 A EP 98202302A EP 0895867 A3 EP0895867 A3 EP 0895867A3
Authority
EP
European Patent Office
Prior art keywords
toner particles
field
electrostatic printing
flow
direct 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.)
Withdrawn
Application number
EP98202302A
Other languages
German (de)
French (fr)
Other versions
EP0895867A2 (en
Inventor
Guido Desie
Frans Backeljauw
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.)
Agfa Gevaert NV
Original Assignee
Agfa Gevaert 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 Agfa Gevaert NV filed Critical Agfa Gevaert NV
Priority to EP98202302A priority Critical patent/EP0895867A3/en
Publication of EP0895867A2 publication Critical patent/EP0895867A2/en
Publication of EP0895867A3 publication Critical patent/EP0895867A3/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Withdrawn legal-status Critical Current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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/34—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the powder image is formed directly on the recording material, e.g. by using a liquid toner
    • G03G15/344—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the powder image is formed directly on the recording material, e.g. by using a liquid toner by selectively transferring the powder to the recording medium, e.g. by using a LED array
    • G03G15/348—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the powder image is formed directly on the recording material, e.g. by using a liquid toner by selectively transferring the powder to the recording medium, e.g. by using a LED array using a stylus or a multi-styli array
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
    • B41J2/41—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for electrostatic printing
    • B41J2/415—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for electrostatic printing by passing charged particles through a hole or a slit
    • B41J2/4155—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for electrostatic printing by passing charged particles through a hole or a slit for direct electrostatic printing [DEP]
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2217/00—Details of electrographic processes using patterns other than charge patterns
    • G03G2217/0008—Process where toner image is produced by controlling which part of the toner should move to the image- carrying member
    • G03G2217/0025—Process where toner image is produced by controlling which part of the toner should move to the image- carrying member where the toner starts moving from behind the electrode array, e.g. a mask of holes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

A device for direct electrostatic printing is provided comprising means for creating a flow of charged toner particles from a means for delivering charged toner particles, having a surface bearing toner particles, to an image receiving substrate, applying a DC potential difference between the means for delivering charged toner particles and the image receiving substrate and a printhead structure having control electrodes, interposed in the flow of toner particles for image wise controlling the flow of toner particles, the printhead structure controlling the flow of toner particles only from one side, wherein means for applying an AC-field on the surface bearing toner particles are incorporated, AC-field having a frequency between 1.5 and 3 kHz.
EP98202302A 1997-08-07 1998-07-08 A device for direct electrostatic printing with an edge electrode and an AC-field on the surface of the toner delivery means Withdrawn EP0895867A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98202302A EP0895867A3 (en) 1997-08-07 1998-07-08 A device for direct electrostatic printing with an edge electrode and an AC-field on the surface of the toner delivery means

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP97202443 1997-08-07
EP97202443 1997-08-07
EP98202302A EP0895867A3 (en) 1997-08-07 1998-07-08 A device for direct electrostatic printing with an edge electrode and an AC-field on the surface of the toner delivery means

Publications (2)

Publication Number Publication Date
EP0895867A2 EP0895867A2 (en) 1999-02-10
EP0895867A3 true EP0895867A3 (en) 1999-03-31

Family

ID=26146770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98202302A Withdrawn EP0895867A3 (en) 1997-08-07 1998-07-08 A device for direct electrostatic printing with an edge electrode and an AC-field on the surface of the toner delivery means

Country Status (1)

Country Link
EP (1) EP0895867A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002172813A (en) * 2000-09-29 2002-06-18 Seiko Epson Corp Image forming device
US6817701B2 (en) * 2001-08-28 2004-11-16 Seiko Epson Corporation Image forming apparatus
JP2007118571A (en) * 2005-09-06 2007-05-17 Seiko Epson Corp Image forming apparatus, image forming method, and program thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0435549A2 (en) * 1989-12-18 1991-07-03 Xerox Corporation Apertured printhead for direct electrostatic printing
US5051760A (en) * 1989-07-31 1991-09-24 Ricoh Company, Ltd. Direct image recording apparatus using toner
EP0769384A2 (en) * 1995-10-18 1997-04-23 Hewlett-Packard Company Toner ejection printing
US5625392A (en) * 1993-03-09 1997-04-29 Brother Kogyo Kabushiki Kaisha Image forming device having a control electrode for controlling toner flow
EP0780740A1 (en) * 1995-12-18 1997-06-25 Agfa-Gevaert N.V. A device for direct electrostatic printing (DEP) comprising a printhead structure with slit aperture

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689935A (en) 1969-10-06 1972-09-05 Electroprint Inc Electrostatic line printer
US4491855A (en) 1981-09-11 1985-01-01 Canon Kabushiki Kaisha Image recording method and apparatus
US4478510A (en) 1981-12-16 1984-10-23 Canon Kabushiki Kaisha Cleaning device for modulation control means
US4755837A (en) 1986-11-03 1988-07-05 Xerox Corporation Direct electrostatic printing apparatus and printhead cleaning structure therefor
SE459724B (en) 1987-12-08 1989-07-31 Larson Prod Ab Ove SETTING AND DEVICE MAKING A LATENT ELECTRIC CHARGING PATTERN
US4876561A (en) 1988-05-31 1989-10-24 Xerox Corporation Printing apparatus and toner/developer delivery system therefor
US4903050A (en) 1989-07-03 1990-02-20 Xerox Corporation Toner recovery for DEP cleaning process
US5095322A (en) 1990-10-11 1992-03-10 Xerox Corporation Avoidance of DEP wrong sign toner hole clogging by out of phase shield bias

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5051760A (en) * 1989-07-31 1991-09-24 Ricoh Company, Ltd. Direct image recording apparatus using toner
EP0435549A2 (en) * 1989-12-18 1991-07-03 Xerox Corporation Apertured printhead for direct electrostatic printing
US5625392A (en) * 1993-03-09 1997-04-29 Brother Kogyo Kabushiki Kaisha Image forming device having a control electrode for controlling toner flow
EP0769384A2 (en) * 1995-10-18 1997-04-23 Hewlett-Packard Company Toner ejection printing
EP0780740A1 (en) * 1995-12-18 1997-06-25 Agfa-Gevaert N.V. A device for direct electrostatic printing (DEP) comprising a printhead structure with slit aperture

Also Published As

Publication number Publication date
EP0895867A2 (en) 1999-02-10

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