US3919605A - Corona discharge apparatus - Google Patents

Corona discharge apparatus Download PDF

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Publication number
US3919605A
US3919605A US469489A US46948974A US3919605A US 3919605 A US3919605 A US 3919605A US 469489 A US469489 A US 469489A US 46948974 A US46948974 A US 46948974A US 3919605 A US3919605 A US 3919605A
Authority
US
United States
Prior art keywords
rail
supporting
corona discharge
plate spring
shield
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.)
Expired - Lifetime
Application number
US469489A
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English (en)
Inventor
Ko Honda
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 Ltd
Original Assignee
Rank Xerox Ltd
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 Rank Xerox Ltd filed Critical Rank Xerox Ltd
Application granted granted Critical
Publication of US3919605A publication Critical patent/US3919605A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • a corona discharge device has an arrangement for easily varying the distance between the device and a photoreceptor surface, the arrangement including a plate spring for biasing the device in one direction. and a screw for moving the device against the bias of the plate spring.
  • a supporting rail on which the corona discharge device is slidably mounted is held between flanges on the plate spring.
  • the principal section of a corona discharge apparatus is a discharger proper that is assigned a function of conducting proper discharge by arranging insulation blocks at the both ends in a slender metal shield of a concave section, by bridging a fine electrode wire made of metal over the blocks, and by supplying the said fine electrode wire with high voltage, thus effectuating proper discharge.
  • the present invention to put it in details, relates to a mechanism for adjusting the distance between a corona discharge apparatus employed for the electrification, the discharge, and the transcription of a photosensitive substance of the above-mentioned duplicator of the electronic photography system and the photosensitive substance.
  • a discharger proper 1 with insulation blocks 3 (of which only one end is shown in the drawing) properly arranged at the both ends of an oblong metal shield 2 of a concave section, with a fine wire electrode 4-made of a metal properly set in place to bridge over between the said blocks, and with a groove 5 formed on the bottom thereof, is so designed as to slide along a supporting rail 6 of the said discharger proper 1 and the said groove 5 selected as the guides, andis so positioned as to be confronted with a drum 7 constituting a photosensitive substance over a certain distance a properly maintained therefor.
  • the present invention aims to provide such a discharge apparatus as is capable of conducting discharge in a uniform manner and in the most suitable manner; therefore, it proves to be quite effective for obtaining a duplicate of a superb quality.
  • a supporting base means forming a channel along the shield, 21 supporting rail confined within the channel for supporting the device on the base adjacent to the photosensitive surface, a plate spring disposed at each end of the rail, each plate spring being interposed between the base and the rail and adapted to bias the rail in a first direction, each of the plate springs having flange means thereon for confining the rail therebetween, and screw means for adjustably moving the rail to a desired position against the bias of each of the plate springs and retaining the rail in the desired position.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
US469489A 1973-05-18 1974-05-13 Corona discharge apparatus Expired - Lifetime US3919605A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973057832U JPS507039U (enrdf_load_html_response) 1973-05-18 1973-05-18

Publications (1)

Publication Number Publication Date
US3919605A true US3919605A (en) 1975-11-11

Family

ID=13066902

Family Applications (1)

Application Number Title Priority Date Filing Date
US469489A Expired - Lifetime US3919605A (en) 1973-05-18 1974-05-13 Corona discharge apparatus

Country Status (2)

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US (1) US3919605A (enrdf_load_html_response)
JP (1) JPS507039U (enrdf_load_html_response)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252431A (en) * 1979-10-01 1981-02-24 Nashua Corporation Adjustable corona support
US5335050A (en) * 1993-09-13 1994-08-02 Xerox Corporation Adjustable support assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS623809Y2 (enrdf_load_html_response) * 1977-06-24 1987-01-28

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811048A (en) * 1972-09-12 1974-05-14 Xerox Corp Electrophotographic charging apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811048A (en) * 1972-09-12 1974-05-14 Xerox Corp Electrophotographic charging apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252431A (en) * 1979-10-01 1981-02-24 Nashua Corporation Adjustable corona support
US5335050A (en) * 1993-09-13 1994-08-02 Xerox Corporation Adjustable support assembly

Also Published As

Publication number Publication date
JPS507039U (enrdf_load_html_response) 1975-01-24

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