GB1336821A - Corona discharge device - Google Patents

Corona discharge device

Info

Publication number
GB1336821A
GB1336821A GB1473672A GB1473672A GB1336821A GB 1336821 A GB1336821 A GB 1336821A GB 1473672 A GB1473672 A GB 1473672A GB 1473672 A GB1473672 A GB 1473672A GB 1336821 A GB1336821 A GB 1336821A
Authority
GB
United Kingdom
Prior art keywords
screens
corona discharge
discharge device
foraminous
coated
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
Application number
GB1473672A
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of GB1336821A publication Critical patent/GB1336821A/en
Expired 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/04—Carrying-off electrostatic charges by means of spark gaps or other discharge devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/37—Printing employing electrostatic force

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Catalysts (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

1336821 Corona discharge device RCA CORP 22 March 1972 [2 April 1971] 14736/72 Heading G2H A corona discharge device comprises an elongated corona electrode 32 disposed within a housing such that the corona discharge is directed towards a foraminous screen 26. A catalyst such as silver gold, nickel, platinum, iron, an alloy of these metals, nickel sesquioxide, barium monoxide, cupric oxide and silver peroxide is provided within the housing, e.g. as layers 54, for converting into oxygen any ozone produced during discharge. A second foraminous screen 30 may be provided and both screens may be coated with or comprise at least one of the catalytic materials. A baffle plate 28 prevents Ultraviolet light from reaching the photo-conductive surface 14 of the recording element 16. The screens 26 and 30 preferably have an optical transmission of less than 50%. In a further embodiment, Fig. 3, the electrode 72 is held on rods 76 between two foraminous screens 62 and 70 having an optical transmission of between 20% and 50%, the screens being either made of or coated with the catalytic material. Certain catalytic materials e.g. barium monoxide and silver peroxide may be held in foraminous screen containers 84. A fan 86 is arranged to draw any ozone through the catalytic material 82.
GB1473672A 1971-04-02 1972-03-29 Corona discharge device Expired GB1336821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13064471A 1971-04-02 1971-04-02

Publications (1)

Publication Number Publication Date
GB1336821A true GB1336821A (en) 1973-11-14

Family

ID=22445655

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1473672A Expired GB1336821A (en) 1971-04-02 1972-03-29 Corona discharge device

Country Status (11)

Country Link
US (1) US3675096A (en)
JP (1) JPS521670B1 (en)
BE (1) BE781534A (en)
CA (1) CA947816A (en)
CH (1) CH549233A (en)
DE (1) DE2215110C3 (en)
FR (1) FR2136121A5 (en)
GB (1) GB1336821A (en)
IT (1) IT947803B (en)
NL (1) NL7204339A (en)
SE (1) SE366597B (en)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850519A (en) * 1973-01-12 1974-11-26 Xerox Corp Xerographic image transfer apparatus
US3880514A (en) * 1973-09-14 1975-04-29 Coulter Information Systems Ion producing source for electrostatic recording apparatus
GB1454409A (en) * 1973-12-21 1976-11-03 Xerox Corp Corona generating devices
US3983393A (en) * 1975-06-11 1976-09-28 Xerox Corporation Corona device with reduced ozone emission
JPS5856865B2 (en) * 1975-10-15 1983-12-16 キヤノン株式会社 electrophotography
JPS52133894A (en) * 1976-05-06 1977-11-09 Fuji Xerox Co Ltd Ozone decomposition catalysts
JPS5379550A (en) * 1976-12-24 1978-07-14 Olympus Optical Co Ltd Ozone pemoval device
US4143118A (en) * 1977-08-08 1979-03-06 Xerox Corporation Apparatus and method for ozone reduction in electrostatographic reproduction equipment
US4156266A (en) * 1978-03-03 1979-05-22 Static Inc. Light free static neutralizer
US4188530A (en) * 1978-11-14 1980-02-12 The Simco Company, Inc. Light-shielded extended-range static eliminator
JPS5614248A (en) * 1979-07-16 1981-02-12 Canon Inc Image forming apparatus
US4388274A (en) * 1980-06-02 1983-06-14 Xerox Corporation Ozone collection and filtration system
JPS6015653A (en) * 1983-07-08 1985-01-26 Toshiba Corp Electrophotographic method
US4762997A (en) * 1983-11-30 1988-08-09 Xerox Corporation Fluid jet assisted ion projection charging method
US4585322A (en) * 1984-12-12 1986-04-29 Xerox Corporation Corona generating device
US4646196A (en) * 1985-07-01 1987-02-24 Xerox Corporation Corona generating device
DE3620666A1 (en) * 1986-06-20 1988-03-31 Hoelter Heinz Multiply active, bactericidal-fungicidal chemisorption filter with integrated ozonisation and ionisation
DE3620168A1 (en) * 1986-06-14 1987-12-17 Hoelter Heinrich Dipl Ing Chemisorption filter for treating breathing air for allergic people
US4725731A (en) * 1986-07-02 1988-02-16 Xerox Corporation Photoreceptor deletion control by utilization of corona wind
DE3624803A1 (en) * 1986-07-23 1988-01-28 Hoelter Heinz Apparatus and method for improving the efficiency of bactericidal and fungicidal chemisorption filters and corresponding room air filters and motor vehicle cabin air filters with the aid of electrical charges or discharges
US4939543A (en) * 1988-09-12 1990-07-03 Xerox Corporation Ionographic ozone filtering system
US4837658A (en) * 1988-12-14 1989-06-06 Xerox Corporation Long life corona charging device
US4853719A (en) * 1988-12-14 1989-08-01 Xerox Corporation Coated ion projection printing head
US5142328A (en) * 1989-08-31 1992-08-25 Mita Industrial Co., Ltd. Coating material for eliminating ozone and electronic image processing apparatus having the same
JPH03240076A (en) * 1990-02-17 1991-10-25 Canon Inc Electrostatic charging device
DE4017892A1 (en) * 1990-06-02 1991-12-05 Solvay Umweltchemie Gmbh METAL FILM SUPPORT CATALYST
JP2568006B2 (en) * 1990-08-23 1996-12-25 インターナショナル・ビジネス・マシーンズ・コーポレイション Method for discharging electric charge from an object by ionized air and apparatus therefor
FR2690302A1 (en) * 1992-04-17 1993-10-22 Kodak Pathe Cleaning device for strip of unexposed photosensitive product.
JPH06118774A (en) * 1992-09-28 1994-04-28 Xerox Corp Corona generating device having heating shield
US5549795A (en) * 1994-08-25 1996-08-27 Hughes Aircraft Company Corona source for producing corona discharge and fluid waste treatment with corona discharge
US5785932A (en) * 1996-02-22 1998-07-28 Environmental Elements Corp. Catalytic reactor for oxidizing mercury vapor
US6504308B1 (en) 1998-10-16 2003-01-07 Kronos Air Technologies, Inc. Electrostatic fluid accelerator
US6664741B1 (en) 2002-06-21 2003-12-16 Igor A. Krichtafovitch Method of and apparatus for electrostatic fluid acceleration control of a fluid flow
US6963479B2 (en) * 2002-06-21 2005-11-08 Kronos Advanced Technologies, Inc. Method of and apparatus for electrostatic fluid acceleration control of a fluid flow
US6727657B2 (en) 2002-07-03 2004-04-27 Kronos Advanced Technologies, Inc. Electrostatic fluid accelerator for and a method of controlling fluid flow
US6937455B2 (en) 2002-07-03 2005-08-30 Kronos Advanced Technologies, Inc. Spark management method and device
US7122070B1 (en) 2002-06-21 2006-10-17 Kronos Advanced Technologies, Inc. Method of and apparatus for electrostatic fluid acceleration control of a fluid flow
US7053565B2 (en) 2002-07-03 2006-05-30 Kronos Advanced Technologies, Inc. Electrostatic fluid accelerator for and a method of controlling fluid flow
US7150780B2 (en) * 2004-01-08 2006-12-19 Kronos Advanced Technology, Inc. Electrostatic air cleaning device
US7157704B2 (en) 2003-12-02 2007-01-02 Kronos Advanced Technologies, Inc. Corona discharge electrode and method of operating the same
US7410532B2 (en) 2005-04-04 2008-08-12 Krichtafovitch Igor A Method of controlling a fluid flow

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470417A (en) * 1966-10-03 1969-09-30 Eastman Kodak Co Method of altering electrostatic charge on an insulating material
US3566108A (en) * 1967-01-27 1971-02-23 Xerox Corp Corona generating electrode structure for use in a xerographic charging method
US3557367A (en) * 1967-09-01 1971-01-19 Xerox Corp Method and apparatus for increasing the efficiency of corona charging of a photoconductor

Also Published As

Publication number Publication date
CA947816A (en) 1974-05-21
CH549233A (en) 1974-05-15
US3675096A (en) 1972-07-04
IT947803B (en) 1973-05-30
DE2215110B2 (en) 1978-01-19
SE366597B (en) 1974-04-29
JPS521670B1 (en) 1977-01-17
FR2136121A5 (en) 1972-12-22
NL7204339A (en) 1972-10-04
BE781534A (en) 1972-07-13
DE2215110A1 (en) 1972-10-12
DE2215110C3 (en) 1978-09-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees