GB1267535A - Electrophotographic process and apparatus - Google Patents

Electrophotographic process and apparatus

Info

Publication number
GB1267535A
GB1267535A GB03994/69A GB1399469A GB1267535A GB 1267535 A GB1267535 A GB 1267535A GB 03994/69 A GB03994/69 A GB 03994/69A GB 1399469 A GB1399469 A GB 1399469A GB 1267535 A GB1267535 A GB 1267535A
Authority
GB
United Kingdom
Prior art keywords
dielectric
sheet
field
rollers
charge
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
GB03994/69A
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.)
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
Original Assignee
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
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 JP4674268A external-priority patent/JPS5144409B1/ja
Priority claimed from JP6837968U external-priority patent/JPS4741481Y1/ja
Application filed by Iwatsu Electric Co Ltd, Iwasaki Tsushinki KK filed Critical Iwatsu Electric Co Ltd
Publication of GB1267535A publication Critical patent/GB1267535A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • 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
    • G03G15/0208—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus
    • G03G15/0216—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers
    • 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
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/1665—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
    • G03G15/167—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer
    • 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
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/001—Electric or magnetic imagery, e.g., xerography, electrography, magnetography, etc. Process, composition, or product
    • Y10S430/102—Electrically charging radiation-conductive surface

Landscapes

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

Abstract

1,267,535. Electrographic process. IWASAKI TSUSHINKI K. K. March 17, 1969 [March 19, 1968; July 4, 1968; Aug. 9, 1968], No. 13994/69. Heading G2H. [Also in Division B6] A sheet to be electrostatically charged, or superimposed sheets between which a developed image is to be transferred, is or are placed between a dielectric covered first conductor and a second conductor, a field is applied between the conductors, and undesired charge is removed from the dielectric. As shown in Fig. 2 a battery 8 applies a field between rollers 5 and 6 to charge a sheet 7 and a battery 10 is connected to a roller 9 to remove charge from dielectric 5b. Similar systems are described with reference to Figs. 4, 7, 9 (not shown). As shown in Fig. 5, an A. C. source 17 is connected between rollers 5 and 6 to apply a field in one direction when a sheet is present and to apply a field in the opposite direction when a sheet is absent to remove charge from the dielectric 56. Similar systems are described with reference to Figs. 8, 10, 11 (not shown). Instead of using an A, C, source, rollers 5, 6 may be switched between two D.C. sources. Instead of roller electrodes, an endless dielectric band around two conductors Fig. 7 (not shown) or a pair of plates one of which reciprocates Fig. 8 (not shown) may be used.
GB03994/69A 1968-03-19 1969-03-17 Electrophotographic process and apparatus Expired GB1267535A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1772268 1968-03-19
JP4674268A JPS5144409B1 (en) 1968-07-04 1968-07-04
JP6837968U JPS4741481Y1 (en) 1968-08-09 1968-08-09

Publications (1)

Publication Number Publication Date
GB1267535A true GB1267535A (en) 1972-03-22

Family

ID=27281940

Family Applications (1)

Application Number Title Priority Date Filing Date
GB03994/69A Expired GB1267535A (en) 1968-03-19 1969-03-17 Electrophotographic process and apparatus

Country Status (3)

Country Link
US (1) US3626260A (en)
FR (1) FR2002962A1 (en)
GB (1) GB1267535A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2152501B2 (en) * 1971-10-21 1980-02-14 Agfa-Gevaert Ag, 5090 Leverkusen Device for the transfer of powdery toner images
US3876917A (en) * 1973-03-26 1975-04-08 Bell & Howell Co Electrostatic charging apparatus
DE2422660C2 (en) * 1973-05-11 1986-02-13 ElectroPrint, Inc., Cupertino, Calif. ELECTROSTATIC PRINTER
US3866572A (en) * 1973-05-29 1975-02-18 Xerox Corp Foraminous electrostatographic transfer system
US3879121A (en) * 1973-12-13 1975-04-22 Ibm Transfer system
US4159172A (en) * 1974-10-26 1979-06-26 Ricoh Company, Ltd. Transfer sheet separator for use with electrophotographic copying machine
US4195991A (en) * 1977-10-21 1980-04-01 James River Graphics Inc. Electrographic recording method of applying an electric field opposite the charge retaining layer
US4340656A (en) * 1978-04-07 1982-07-20 Minolta Camera Kabushiki Kaisha Electrophotographic copying method with residual charge erasing step
CA1150816A (en) * 1979-07-06 1983-07-26 Ronald Else Method and apparatus for implanting a charge in an electret foil
DE3101678C2 (en) * 1980-01-25 1983-07-07 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Means for uniformly charging an electrophotographic recording material continuously moved through a charging zone
DE3164262D1 (en) * 1980-03-10 1984-07-26 Tokyo Shibaura Electric Co Charging device
FR2584560B1 (en) * 1985-07-03 1990-05-11 Telephonie Ind Commerciale ELECTROSTATIC CHARGE ERASER
US4727453A (en) * 1986-12-22 1988-02-23 Xerox Corporation Alternating current inductive charging of a photoreceptor
EP0308185B1 (en) * 1987-09-14 1993-11-24 Canon Kabushiki Kaisha A charging device
JPH0830915B2 (en) * 1988-02-19 1996-03-27 キヤノン株式会社 Charging member, charging device using the same, and electrophotographic apparatus
US5321472A (en) * 1990-01-24 1994-06-14 Canon Kabushiki Kaisha Charging member with a bridging electrode structure and charging device using same in an image forming apparatus
JPH03240076A (en) * 1990-02-17 1991-10-25 Canon Inc Electrostatic charging device
US5420677A (en) * 1991-11-08 1995-05-30 Xerox Corporation Method and apparatus for extending material life in a bias transfer roll
EP0795796A1 (en) * 1996-03-08 1997-09-17 COMPUPRINT S.p.A. An electrophotographic printing device with a charging roller
JPH10274865A (en) * 1996-12-28 1998-10-13 Fuji Photo Film Co Ltd Production of lithographic printing plate

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980834A (en) * 1956-04-26 1961-04-18 Bruning Charles Co Inc Charging of photo-conductive insulating material
US3172024A (en) * 1960-03-17 1965-03-02 Xerox Corp Charge induction
US3195362A (en) * 1960-10-05 1965-07-20 United Gas Corp Unidirectional step clutch
US3521126A (en) * 1967-07-28 1970-07-21 Addressograph Multigraph Roller charging apparatus

Also Published As

Publication number Publication date
DE1914036A1 (en) 1969-09-25
FR2002962A1 (en) 1969-11-07
US3626260A (en) 1971-12-07
DE1914036B2 (en) 1972-11-16

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Legal Events

Date Code Title Description
48R Reference inserted (sect. 8/1949)
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees