FR2424649A1 - CORONA EFFECT GENERATOR ELEMENT - Google Patents

CORONA EFFECT GENERATOR ELEMENT

Info

Publication number
FR2424649A1
FR2424649A1 FR7910196A FR7910196A FR2424649A1 FR 2424649 A1 FR2424649 A1 FR 2424649A1 FR 7910196 A FR7910196 A FR 7910196A FR 7910196 A FR7910196 A FR 7910196A FR 2424649 A1 FR2424649 A1 FR 2424649A1
Authority
FR
France
Prior art keywords
corona effect
wire
corona
effect generator
thin
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Withdrawn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
FR7910196A
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.)
Coulter Systems Corp
Original Assignee
Coulter Systems 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 US06/028,641 external-priority patent/US4240125A/en
Application filed by Coulter Systems Corp filed Critical Coulter Systems Corp
Publication of FR2424649A1 publication Critical patent/FR2424649A1/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Withdrawn legal-status Critical Current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
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

L'INVENTION CONCERNE UN ELEMENT GENERATEUR D'EFFET CORONA POUVANT ETRE CONNECTE A UNE SOURCE DE HAUTE TENSION POUR UNE CHARGE ELECTROSTATIQUE UNIFORME DE LA SURFACE D'UN ORGANE PHOTOCONDUCTEUR, ET IL EST FORME D'UN BRIN D'UN FIL METALLIQUE. SELON L'INVENTION, PLUSIEURS PARTIES MINCES ET ESPACEES 21 SONT FORMEES SUR LA LONGUEUR DU FIL 19, LES PARTIES MINCES AYANT UNE EPAISSEUR INFERIEURE AU CORPS DU FIL 19 ET CHAQUE PARTIE MINCE SE TERMINANT PAR AU MOINS UN BORD 23 CONSTITUANT UNE SURFACE D'EMISSION CORONA POUVANT GENERER UN EFFET CORONA LE LONG DES BORDS, QUI EST SENSIBLEMENT UNIFORME SUR TOUTE LA LONGUEUR DE L'ELEMENT. L'INVENTION S'APPLIQUE NOTAMMENT A L'ELECTROPHOTOGRAPHIE.THE INVENTION RELATES TO A CORONA EFFECT GENERATOR THAT CAN BE CONNECTED TO A HIGH VOLTAGE SOURCE FOR A UNIFORM ELECTROSTATIC CHARGE OF THE SURFACE OF A PHOTOCONDUCTING ORGAN, AND IS SHAPED AS A STRAND OF A METAL WIRE. ACCORDING TO THE INVENTION, SEVERAL THIN AND SPACED PARTS 21 ARE SHAPED OVER THE LENGTH OF THE WIRE 19, THE THIN PARTS HAVING A THICKNESS LOWER THAN THE BODY OF THE WIRE 19 AND EACH THIN PART ENDING WITH AT LEAST ONE EDGE 23 CONSTITUTING AN EMISSION SURFACE CORONA CAPABLE OF GENERATING A CORONA EFFECT ALONG THE EDGES, WHICH IS SIGNIFICANTLY UNIFORM THROUGHOUT THE LENGTH OF THE ELEMENT. THE INVENTION APPLIES IN PARTICULAR TO ELECTROPHOTOGRAPHY.

FR7910196A 1978-04-24 1979-04-23 CORONA EFFECT GENERATOR ELEMENT Withdrawn FR2424649A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US89873078A 1978-04-24 1978-04-24
US06/028,641 US4240125A (en) 1979-04-11 1979-04-11 Corona generating element

Publications (1)

Publication Number Publication Date
FR2424649A1 true FR2424649A1 (en) 1979-11-23

Family

ID=26703937

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7910196A Withdrawn FR2424649A1 (en) 1978-04-24 1979-04-23 CORONA EFFECT GENERATOR ELEMENT

Country Status (12)

Country Link
AT (1) AT364602B (en)
CA (1) CA1120530A (en)
CH (1) CH629626A5 (en)
DE (1) DE2916330A1 (en)
DK (1) DK166679A (en)
FR (1) FR2424649A1 (en)
GB (1) GB2021871B (en)
IL (1) IL57173A (en)
IT (1) IT1162627B (en)
LU (1) LU81181A1 (en)
NL (1) NL7903167A (en)
SE (1) SE7903522L (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1351727A (en) * 1963-02-25 1964-02-07 Kamera & Kinowerke Dresden Veb Method and apparatus for producing halftone images by electrophotographic means
US3581149A (en) * 1967-07-14 1971-05-25 Canon Camera Co Corona discharging device for electrophotographic process
FR2176914A1 (en) * 1972-03-20 1973-11-02 Kalle Ag
FR2189782A1 (en) * 1972-06-22 1974-01-25 Kalle Ag
US3942079A (en) * 1970-10-29 1976-03-02 Brock Alan J Charging of electrophotographic surfaces

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1351727A (en) * 1963-02-25 1964-02-07 Kamera & Kinowerke Dresden Veb Method and apparatus for producing halftone images by electrophotographic means
US3581149A (en) * 1967-07-14 1971-05-25 Canon Camera Co Corona discharging device for electrophotographic process
US3942079A (en) * 1970-10-29 1976-03-02 Brock Alan J Charging of electrophotographic surfaces
FR2176914A1 (en) * 1972-03-20 1973-11-02 Kalle Ag
FR2189782A1 (en) * 1972-06-22 1974-01-25 Kalle Ag

Also Published As

Publication number Publication date
GB2021871B (en) 1982-08-04
DK166679A (en) 1979-10-25
IL57173A (en) 1982-01-31
SE7903522L (en) 1979-10-25
CA1120530A (en) 1982-03-23
GB2021871A (en) 1979-12-05
NL7903167A (en) 1979-10-26
IT1162627B (en) 1987-04-01
DE2916330A1 (en) 1979-10-31
AT364602B (en) 1981-11-10
CH629626A5 (en) 1982-04-30
IT7948817A0 (en) 1979-04-23
ATA301479A (en) 1981-03-15
LU81181A1 (en) 1980-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse