FR2388313A1 - Procede et appareil de marquage d'une surface de formation d'image photoconductrice - Google Patents

Procede et appareil de marquage d'une surface de formation d'image photoconductrice

Info

Publication number
FR2388313A1
FR2388313A1 FR7809357A FR7809357A FR2388313A1 FR 2388313 A1 FR2388313 A1 FR 2388313A1 FR 7809357 A FR7809357 A FR 7809357A FR 7809357 A FR7809357 A FR 7809357A FR 2388313 A1 FR2388313 A1 FR 2388313A1
Authority
FR
France
Prior art keywords
grid
photocopier
improved contrast
raster pattern
charged layer
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
FR7809357A
Other languages
English (en)
French (fr)
Other versions
FR2388313B1 (nl
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
Priority claimed from US05/783,095 external-priority patent/US4124287A/en
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of FR2388313A1 publication Critical patent/FR2388313A1/fr
Application granted granted Critical
Publication of FR2388313B1 publication Critical patent/FR2388313B1/fr
Granted 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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/04027—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material and forming half-tone image

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
FR7809357A 1977-03-31 1978-03-30 Procede et appareil de marquage d'une surface de formation d'image photoconductrice Granted FR2388313A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78309477A 1977-03-31 1977-03-31
US05/783,095 US4124287A (en) 1977-03-31 1977-03-31 Imaging system utilizing uncharged marking particles

Publications (2)

Publication Number Publication Date
FR2388313A1 true FR2388313A1 (fr) 1978-11-17
FR2388313B1 FR2388313B1 (nl) 1985-05-24

Family

ID=27120097

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7809357A Granted FR2388313A1 (fr) 1977-03-31 1978-03-30 Procede et appareil de marquage d'une surface de formation d'image photoconductrice

Country Status (6)

Country Link
JP (1) JPS53123136A (nl)
BR (1) BR7801974A (nl)
DE (1) DE2813795A1 (nl)
FR (1) FR2388313A1 (nl)
MX (1) MX147918A (nl)
NL (1) NL7803395A (nl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56117261A (en) * 1980-02-22 1981-09-14 Hitachi Metals Ltd Electrostatic latent-image developing method
US4591260A (en) * 1984-09-04 1986-05-27 Xerox Corporation Imaging system utilizing an electro-optic device

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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250737B (nl) * 1963-07-08
US3532494A (en) * 1969-09-08 1970-10-06 Gopal C Bhagat Solid area development in xerography employing an insulating screen in the charging step
JPS4922945A (nl) * 1972-06-20 1974-02-28
JPS524123A (en) * 1975-06-27 1977-01-13 Canon Inc Picture forming equipment
DE2557685A1 (de) * 1975-12-20 1977-06-30 Ibm Deutschland Verfahren zur herstellung einer gerasterten photoleiterschicht

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
FR2388313B1 (nl) 1985-05-24
MX147918A (es) 1983-02-02
JPS53123136A (en) 1978-10-27
BR7801974A (pt) 1978-12-19
NL7803395A (nl) 1978-10-03
DE2813795A1 (de) 1978-10-12

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Legal Events

Date Code Title Description
ST Notification of lapse