FR2386068A1 - Xerographic image formation process - uses non-uniform charge applied to insulating surface by stylus - Google Patents

Xerographic image formation process - uses non-uniform charge applied to insulating surface by stylus

Info

Publication number
FR2386068A1
FR2386068A1 FR7809358A FR7809358A FR2386068A1 FR 2386068 A1 FR2386068 A1 FR 2386068A1 FR 7809358 A FR7809358 A FR 7809358A FR 7809358 A FR7809358 A FR 7809358A FR 2386068 A1 FR2386068 A1 FR 2386068A1
Authority
FR
France
Prior art keywords
stylus
uniform charge
design
insulating surface
image formation
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Withdrawn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
FR7809358A
Other languages
French (fr)
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 FR2386068A1 publication Critical patent/FR2386068A1/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Withdrawn legal-status Critical Current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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/22—Processes involving a combination of more than one step according to groups G03G13/02 - G03G13/20

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

The image forming method includes formation of a non-uniform charge design in an image configuration on a surface and placing the design in contact with a finely divided marking material. The non uniform charge design has a periodicity of about 25 to 175 microns. The image surface is insulating and is covered with a paper dielectric. The formation stage of a non uniform charged design on the insulating surface (10) includes a stage in which a stylus (20) is displaced over the surface. An alternatively positive and negative charge is applied to the stylus (20) when it is in a position adjacent to a zone of the insulating surface to be marked. Thus a non uniform charge is placed on the part of the surface (10) to be marked.
FR7809358A 1977-03-31 1978-03-30 Xerographic image formation process - uses non-uniform charge applied to insulating surface by stylus Withdrawn FR2386068A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78309777A 1977-03-31 1977-03-31
US78309677A 1977-03-31 1977-03-31

Publications (1)

Publication Number Publication Date
FR2386068A1 true FR2386068A1 (en) 1978-10-27

Family

ID=27120098

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7809358A Withdrawn FR2386068A1 (en) 1977-03-31 1978-03-30 Xerographic image formation process - uses non-uniform charge applied to insulating surface by stylus

Country Status (4)

Country Link
JP (1) JPS53123135A (en)
BR (1) BR7801929A (en)
DE (1) DE2813709A1 (en)
FR (1) FR2386068A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212888A (en) * 1961-06-12 1965-10-19 Xerox Corp Method for developing latent electrostatic charge halftone images
US3234017A (en) * 1959-11-05 1966-02-08 Agfa Ag Process for the production of developed electrophotographic images including application of a breakdown potential to discrete small areas of a photoconductor
US3543022A (en) * 1966-07-01 1970-11-24 Xerox Corp Method and apparatus for charging discrete small areas of xerographic plates to different potentials in continuous tone printing
US4048921A (en) * 1974-03-01 1977-09-20 Addressograph-Multigraph Corporation Electrostatic printing/duplicating method using polarization forces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234017A (en) * 1959-11-05 1966-02-08 Agfa Ag Process for the production of developed electrophotographic images including application of a breakdown potential to discrete small areas of a photoconductor
US3212888A (en) * 1961-06-12 1965-10-19 Xerox Corp Method for developing latent electrostatic charge halftone images
US3543022A (en) * 1966-07-01 1970-11-24 Xerox Corp Method and apparatus for charging discrete small areas of xerographic plates to different potentials in continuous tone printing
US4048921A (en) * 1974-03-01 1977-09-20 Addressograph-Multigraph Corporation Electrostatic printing/duplicating method using polarization forces

Also Published As

Publication number Publication date
JPS53123135A (en) 1978-10-27
DE2813709A1 (en) 1978-10-05
BR7801929A (en) 1979-01-02

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Legal Events

Date Code Title Description
ST Notification of lapse