GB999260A - Electrostatic printer - Google Patents

Electrostatic printer

Info

Publication number
GB999260A
GB999260A GB2713661A GB2713661A GB999260A GB 999260 A GB999260 A GB 999260A GB 2713661 A GB2713661 A GB 2713661A GB 2713661 A GB2713661 A GB 2713661A GB 999260 A GB999260 A GB 999260A
Authority
GB
United Kingdom
Prior art keywords
rings
coupling
electrodes
effected
pulse
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
GB2713661A
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.)
Xerox Ltd
Original Assignee
Rank Xerox Ltd
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 Rank Xerox Ltd filed Critical Rank Xerox Ltd
Priority to GB2713661A priority Critical patent/GB999260A/en
Publication of GB999260A publication Critical patent/GB999260A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/32—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head
    • G03G15/321—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by charge transfer onto the recording material in accordance with the image

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

999,260. Selective printing. RANK-XEROX Ltd. July 26, 1961, No. 27136/61. Heading B6F. An electrostatic printer in which printing is effected by the application of at least two pulses comprises, a rotatable cylinder 10, a number of character - bearing conductive rings 30 insulated from one another at 31, print electrodes 11 defining print gaps across which an electrical discharge is effected to apply an electrostatic charge to a record material fed through the gap, and coupling electrodes 33 closely spaced from the rings for coupling the outputs of electrical pulse generators to the rings 30. This arrangement overcomes the contradictory requirements of capacitors C1, 25, Fig. 2, in previous machines not using a coupling electrode 33. In the arrangement of the present invention, Fig. 4, a steady D.C. bias is applied from 34, a long pulse is applied to the electrode 33 from the pulse generators 17 and a short pulse is applied from input source 24 which is sufficient to increase the two previous potentials from 34 and 17 to effect static discharge to form an image on the web. In a modification (Fig. 6, not shown), small coupling electrodes 3C coact with smooth conductive shoulder areas 35 alongside the character rings 30. Specification 889,663 is referred to.
GB2713661A 1961-07-26 1961-07-26 Electrostatic printer Expired GB999260A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2713661A GB999260A (en) 1961-07-26 1961-07-26 Electrostatic printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2713661A GB999260A (en) 1961-07-26 1961-07-26 Electrostatic printer

Publications (1)

Publication Number Publication Date
GB999260A true GB999260A (en) 1965-07-21

Family

ID=10254811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2713661A Expired GB999260A (en) 1961-07-26 1961-07-26 Electrostatic printer

Country Status (1)

Country Link
GB (1) GB999260A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315079A1 (en) * 1975-06-17 1977-01-14 Cellophane Sa High speed electrographic paper recorder - feeds paper between conducting cylinder and cylinder built up from insulated discs
FR2589274A1 (en) * 1985-10-28 1987-04-30 Telephonie Ind Commerciale ELECTROSTATIC PRINTING HEAD

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315079A1 (en) * 1975-06-17 1977-01-14 Cellophane Sa High speed electrographic paper recorder - feeds paper between conducting cylinder and cylinder built up from insulated discs
FR2589274A1 (en) * 1985-10-28 1987-04-30 Telephonie Ind Commerciale ELECTROSTATIC PRINTING HEAD
EP0221453A1 (en) * 1985-10-28 1987-05-13 Alcatel Business Systems Electrostatic print head

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