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GB1344392A - Corona discharge device for electrophotography - Google Patents

Corona discharge device for electrophotography

Info

Publication number
GB1344392A
GB1344392A GB191072A GB191072A GB1344392A GB 1344392 A GB1344392 A GB 1344392A GB 191072 A GB191072 A GB 191072A GB 191072 A GB191072 A GB 191072A GB 1344392 A GB1344392 A GB 1344392A
Authority
GB
United Kingdom
Prior art keywords
plates
photo
wind
opening
corona discharge
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
GB191072A
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Publication of GB1344392A publication Critical patent/GB1344392A/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
    • G03G15/0258—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices provided with means for the maintenance of the charging apparatus, e.g. cleaning devices, ozone removing devices G03G15/0225, G03G15/0291 takes precedence

Landscapes

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

Abstract

1344392 Charging photo-conductive members KONISHIROKU PHOTO INDUSTRY CO Ltd 14 Jan 1972 [16 Jan 1971] 1910/72 Heading G2H [Also in Division H1] A corona discharge device for electro-photography comprising corona discharge electrodes 34 confined by plates 31, 32a, 32b on three sides so as to form a first opening 35 for charging photo-sensitive paper 1, is provided with at least one second opening 36a, b and means to control the direction of flow of ion wind so as to exhaust the wind through said second opening and prevent blowing of the wind against the photo-sensitive paper. The said means in the arrangement shown consists in locating the electrodes 34 nearer to the plate 31 than to the paper 1 so that the electric field is greater in the direction towards the openings 36a, b and providing conductive side plates 38a, b, with projections 39a, b and 40a, b, which prevent the ion wind streams A from joining the air streams B. The conductive side plates 38a, b are separated from the plates 32a, b, by insulating plates which have notches to expose parts of the plates 38a, b, to the discharge so that they acquire a potential and attract dust which is thus diverted from the discharge wires 34. In an alternative embodiment Fig. 4, (not shown) the side plates 38a, b are provided with single central proportions which may be extended Fig. 5, (not shown) and bent to form a duct containing a suction fan to assist the flow of ion wind.
GB191072A 1971-01-16 1972-01-14 Corona discharge device for electrophotography Expired GB1344392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46000758A JPS5110785B1 (en) 1971-01-16 1971-01-16

Publications (1)

Publication Number Publication Date
GB1344392A true GB1344392A (en) 1974-01-23

Family

ID=11482576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191072A Expired GB1344392A (en) 1971-01-16 1972-01-14 Corona discharge device for electrophotography

Country Status (5)

Country Link
US (1) US3777158A (en)
JP (1) JPS5110785B1 (en)
CA (1) CA947815A (en)
DE (1) DE2201701C3 (en)
GB (1) GB1344392A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH549823A (en) * 1972-10-16 1974-05-31 Turlabor Ag ELECTROGRAPHIC COPYING PROCESS AND DEVICE FOR CARRYING OUT THIS PROCESS.
US3873835A (en) * 1973-11-02 1975-03-25 Vladimir Ignatjev Ionizer
JPS5738900B2 (en) * 1974-09-20 1982-08-18
CA1085446A (en) * 1974-11-30 1980-09-09 Shunji Yamamoto Electrophotographic copying apparatus
US4178092A (en) * 1974-11-30 1979-12-11 Minolta Camera Kabushiki Kaisha Electrophotographic copying apparatus with gas evacuating means
DE2760143C2 (en) * 1976-06-02 1986-07-24 Mita Industrial Co., Ltd., Osaka Stirrer for a magnetic brush developing device
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
EP0110164B1 (en) * 1982-10-30 1987-05-20 Fuji Photo Film Co., Ltd. Device for charging electrophotographic apparatus
JP2661055B2 (en) * 1987-08-21 1997-10-08 ミノルタ株式会社 Corona discharge transfer device for electrophotography
US5018045A (en) * 1989-04-14 1991-05-21 Minolta Camera Kabushiki Kaisha Corona discharger for use in electrophotographic copying machine
US5005050A (en) * 1989-06-15 1991-04-02 Eastman Kodak Company Control of toner particle charge
JPH03192285A (en) * 1989-12-21 1991-08-22 Minolta Camera Co Ltd Image forming device
JP2921912B2 (en) * 1990-04-10 1999-07-19 旭光学工業株式会社 Photosensitive drum exposure prevention structure
EP0778502A1 (en) * 1995-12-07 1997-06-11 Konica Corporation Charging device
CA2332972A1 (en) * 1998-05-24 1999-12-02 Indigo N.V. Printing system
WO2001034397A1 (en) 1999-11-07 2001-05-17 Indigo N.V. Tandem printing system with fine paper-position correction
US6912952B1 (en) 1998-05-24 2005-07-05 Hewlett-Packard Indigo B.V. Duplex printing system
US6851672B1 (en) 2000-04-18 2005-02-08 Hewlett-Packard Indigo B.V. Sheet transport position and jam monitor
US7339778B1 (en) * 2003-06-11 2008-03-04 Ion Systems Corona discharge static neutralizing apparatus
US7483255B2 (en) * 2003-06-11 2009-01-27 Ion Systems Ionizing electrode structure and apparatus
JP4676550B2 (en) * 2009-10-01 2011-04-27 シャープ株式会社 Charging device and image forming apparatus
WO2018233825A1 (en) 2017-06-21 2018-12-27 Hp Indigo B.V. Vacuum tables

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777957A (en) * 1950-04-06 1957-01-15 Haloid Co Corona discharge device
US3062956A (en) * 1960-04-04 1962-11-06 Xerox Corp Xerographic charging apparatus
US3541329A (en) * 1966-12-01 1970-11-17 Xerox Corp Negative corona device with means for producing a repelling electrostatic field

Also Published As

Publication number Publication date
JPS5110785B1 (en) 1976-04-06
US3777158A (en) 1973-12-04
DE2201701C3 (en) 1985-07-18
DE2201701A1 (en) 1972-08-10
CA947815A (en) 1974-05-21
DE2201701B2 (en) 1978-06-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee