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GB1453474A - Method of electrically charging an electrographic layer - Google Patents

Method of electrically charging an electrographic layer

Info

Publication number
GB1453474A
GB1453474A GB4795473A GB4795473A GB1453474A GB 1453474 A GB1453474 A GB 1453474A GB 4795473 A GB4795473 A GB 4795473A GB 4795473 A GB4795473 A GB 4795473A GB 1453474 A GB1453474 A GB 1453474A
Authority
GB
United Kingdom
Prior art keywords
layer
voltage
electrically charging
electrographic
saturation voltage
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
GB4795473A
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.)
Turlabor AG
Original Assignee
Turlabor AG
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 Turlabor AG filed Critical Turlabor AG
Publication of GB1453474A publication Critical patent/GB1453474A/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

Landscapes

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

Abstract

1453474 Electro-photography TURLABOR AG 15 Oct 1974 [16 Oct 1972] 47954/73 Heading G2H [Also in Division H1] Prior to use, an electrographic layer is corona charged to a voltage less than the value at which the secondary corona current occurring is at most 10% of the total current flowing to the layer. Preferably the voltage is less than half of the saturation voltage of the layer in its unused state, and is progressively reduced in proportion to the saturation voltage as the saturation voltage falls with use.
GB4795473A 1972-10-16 1973-10-15 Method of electrically charging an electrographic layer Expired GB1453474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1508172A CH549823A (en) 1972-10-16 1972-10-16 ELECTROGRAPHIC COPYING PROCESS AND DEVICE FOR CARRYING OUT THIS PROCESS.

Publications (1)

Publication Number Publication Date
GB1453474A true GB1453474A (en) 1976-10-20

Family

ID=4406172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4795473A Expired GB1453474A (en) 1972-10-16 1973-10-15 Method of electrically charging an electrographic layer

Country Status (5)

Country Link
US (1) US3900776A (en)
CA (1) CA995297A (en)
CH (1) CH549823A (en)
DE (1) DE2339745B2 (en)
GB (1) GB1453474A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5511255A (en) * 1978-07-11 1980-01-26 Ricoh Co Ltd Corona discharge device
NL7902539A (en) * 1979-04-02 1980-10-06 Oce Nederland Bv REVERSE DEVELOPMENT METHOD.
JPS60254160A (en) * 1984-05-31 1985-12-14 Mita Ind Co Ltd Electrophotographic method
JPS62135848A (en) * 1985-12-09 1987-06-18 Sharp Corp Photoconductor drive control method
JP2677729B2 (en) * 1991-12-03 1997-11-17 シャープ株式会社 Image forming method
JPH0844143A (en) * 1993-06-29 1996-02-16 Toshiba Corp Charging device and image forming apparatus equipped with the charging device

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
US3527941A (en) * 1968-07-22 1970-09-08 Eastman Kodak Co Charging system for placing a uniform charge on a photoconductive surface
JPS5110785B1 (en) * 1971-01-16 1976-04-06

Also Published As

Publication number Publication date
DE2339745A1 (en) 1974-05-02
CA995297A (en) 1976-08-17
US3900776A (en) 1975-08-19
CH549823A (en) 1974-05-31
DE2339745B2 (en) 1976-01-29

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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