GB1169510A - An Electrographic Printing Apparatus. - Google Patents

An Electrographic Printing Apparatus.

Info

Publication number
GB1169510A
GB1169510A GB2977268A GB2977268A GB1169510A GB 1169510 A GB1169510 A GB 1169510A GB 2977268 A GB2977268 A GB 2977268A GB 2977268 A GB2977268 A GB 2977268A GB 1169510 A GB1169510 A GB 1169510A
Authority
GB
United Kingdom
Prior art keywords
magnetic field
drum
record
magnetic
printing
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
GB2977268A
Inventor
Charles Cecil Eaglesfield
Anthony Edward Mounter
Arthur Edward Brewster
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2977268A priority Critical patent/GB1169510A/en
Publication of GB1169510A publication Critical patent/GB1169510A/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
    • G03G15/14—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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G19/00—Processes using magnetic patterns; Apparatus therefor, i.e. magnetography

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)

Abstract

1,169,510. Selective printing; magnetic printing. STANDARD TELEPHONES & CABLES Ltd. 21 June, 1968, No. 29772/68. Headings B6C and B6F. Electromagnetic printing.-An electromagnetic printer comprises a recording head 3 selectively magnetizing a drum 10 or belt (13), Fig. 2, not shown, a powder applicator 2, and a transporting magnetic field which transfers the ink from the drum 10 to a record 7 and the ink is bonded to the record at 5 whilst under the influence of the magnetic field. The magnetic field is supplied by transfer roller 4 (or by the belt 13) which is permanently magnetized in a manner such that the emergent magnetic flux at the surface 10 is radial from the centre of the roller. The roller has a knurled surface and is positioned so that the record sheet 8 passes in close proximity to, but does not touch, the drum 6. If they touch the pressure must be less than that necessary to cause a pressure transfer. Inking arrangements.-The magnetic particles (e.g. of ferromagnetic powder) are coated in a thermal fixing agent (e.g. resin or wax) coloured to provide a contrast to the record sheet 6. Visible display.-The matter printed may be viewed upright through a mirror 9 if the initial recording at 3 is inverted. Illuminating devices.-The drum may be illuminated. Series printing.-If a series of copies of a particular magnetic recording are required without continually re-applying the input signal, the magnetic field of roller 4 or tape (13) is less than the magnetic field to create the record.
GB2977268A 1968-06-21 1968-06-21 An Electrographic Printing Apparatus. Expired GB1169510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2977268A GB1169510A (en) 1968-06-21 1968-06-21 An Electrographic Printing Apparatus.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2977268A GB1169510A (en) 1968-06-21 1968-06-21 An Electrographic Printing Apparatus.

Publications (1)

Publication Number Publication Date
GB1169510A true GB1169510A (en) 1969-11-05

Family

ID=10296945

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2977268A Expired GB1169510A (en) 1968-06-21 1968-06-21 An Electrographic Printing Apparatus.

Country Status (1)

Country Link
GB (1) GB1169510A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969114A (en) * 1973-07-26 1976-07-13 Xerox Corporation Method for monitoring copy quality
EP0000409A1 (en) * 1977-07-07 1979-01-24 Océ-Nederland B.V. Process for magnetically transferring a powder image
EP0000408A1 (en) * 1977-07-07 1979-01-24 Océ-Nederland B.V. Process for magnetically transferring a powder image

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969114A (en) * 1973-07-26 1976-07-13 Xerox Corporation Method for monitoring copy quality
EP0000409A1 (en) * 1977-07-07 1979-01-24 Océ-Nederland B.V. Process for magnetically transferring a powder image
EP0000408A1 (en) * 1977-07-07 1979-01-24 Océ-Nederland B.V. Process for magnetically transferring a powder image
US4207101A (en) * 1977-07-07 1980-06-10 Oce-Van Der Grinten N.V. Process for magnetically transferring a powder image

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