GB1236998A - Charging unit for electrostatically operated writing and printing machines, for the application of charges to a charge carrier - Google Patents

Charging unit for electrostatically operated writing and printing machines, for the application of charges to a charge carrier

Info

Publication number
GB1236998A
GB1236998A GB3930068A GB3930068A GB1236998A GB 1236998 A GB1236998 A GB 1236998A GB 3930068 A GB3930068 A GB 3930068A GB 3930068 A GB3930068 A GB 3930068A GB 1236998 A GB1236998 A GB 1236998A
Authority
GB
United Kingdom
Prior art keywords
produce
plate
charges
aug
needle
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
GB3930068A
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.)
Olympia Werke AG
Original Assignee
Olympia Werke 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 Olympia Werke AG filed Critical Olympia Werke AG
Publication of GB1236998A publication Critical patent/GB1236998A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
    • B41J2/41—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for electrostatic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
    • B41J2/425—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for removing surface layer selectively from electro-sensitive material, e.g. metal coated paper

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Methods (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

1,236,998. Selective printing. OLYMPIA WERKE A.G. 16 Aug., 1968 [17 Aug. 1967], No. 39300/68. Heading B6F. [Also in Divisions G2-G3] An electrostatic charging apparatus for producing a uniform electrostatic charge on a photo-conductively coated surface comprises a needle 6 within a cylindrical body 4 of insulating plastics material and energized through a conductor 8a connected to an 8-10 kv. D.C. source (12), Fig. 1 (not shown). Corona discharge emitted by the needle 6 passes through a circular opening 9 in a removable closure plate 7 to produce on a photoconductively coated surface 10 a charged strip of the required height of a character to be produced. The charged strip is then subjected to profiled light beams to produce latent electrostatic charges in the form of characters. The opening 9 may be oval, star-shaped or square instead of circular. The plate 7 may have convex or concave faces to produce a desired field. An incorrectly recorded latent image can be corrected by pulsing the high tension voltage or by applying a control potential to electrodes on the plate 7 and/or the body 4.
GB3930068A 1967-08-17 1968-08-16 Charging unit for electrostatically operated writing and printing machines, for the application of charges to a charge carrier Expired GB1236998A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19671549826 DE1549826A1 (en) 1967-08-17 1967-08-17 Device for electrostatically writing and printing machines for applying charges to a charge carrier
DEO0012706 1967-08-17

Publications (1)

Publication Number Publication Date
GB1236998A true GB1236998A (en) 1971-06-23

Family

ID=25752912

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3930068A Expired GB1236998A (en) 1967-08-17 1968-08-16 Charging unit for electrostatically operated writing and printing machines, for the application of charges to a charge carrier

Country Status (4)

Country Link
CH (1) CH477715A (en)
DE (1) DE1549826A1 (en)
FR (1) FR1575297A (en)
GB (1) GB1236998A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133224A (en) * 1982-11-19 1984-07-18 Ensign Bickford Ind Inc Corona discharge device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH607624A5 (en) * 1976-05-14 1978-09-29 Walter Spengler Printer with electrostatic printing ink transfer onto a dielectric substrate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133224A (en) * 1982-11-19 1984-07-18 Ensign Bickford Ind Inc Corona discharge device
US4556795A (en) * 1982-11-19 1985-12-03 Ensign-Bickford Industries, Inc. Corona discharge device

Also Published As

Publication number Publication date
DE1549826A1 (en) 1971-04-01
CH477715A (en) 1969-08-31
FR1575297A (en) 1969-07-18

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