GB1224477A - Improvements in or relating to electromagnetic non-percussive printing and/or display apparatus - Google Patents

Improvements in or relating to electromagnetic non-percussive printing and/or display apparatus

Info

Publication number
GB1224477A
GB1224477A GB5332867A GB5332867A GB1224477A GB 1224477 A GB1224477 A GB 1224477A GB 5332867 A GB5332867 A GB 5332867A GB 5332867 A GB5332867 A GB 5332867A GB 1224477 A GB1224477 A GB 1224477A
Authority
GB
United Kingdom
Prior art keywords
powder
rotatable
printing
percussive
relating
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
GB5332867A
Inventor
Robert James Hodges
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 GB5332867A priority Critical patent/GB1224477A/en
Priority to FR1592488D priority patent/FR1592488A/fr
Priority to NL6816613A priority patent/NL6816613A/xx
Priority to DE19681810326 priority patent/DE1810326A1/en
Priority to BE729098D priority patent/BE729098A/xx
Priority to US00084947A priority patent/US3834350A/en
Publication of GB1224477A publication Critical patent/GB1224477A/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
    • G03G19/00—Processes using magnetic patterns; Apparatus therefor, i.e. magnetography
    • 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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0808—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer supplying means, e.g. structure of developer supply roller

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

1,224,477. Selective printing. STANDARD TELEPHONES & CABLES Ltd. 21 Nov., 1968 [23 Nov., 1967; 8 March, 1968], Nos. 53328/67 and 11415/68. Heading B6F. In an electromagnetic printing apparatus, a latent magnetic image on a drum 4 is developed with powder 6 by means of a magnetized rotatable cylinder 1 or the like. A plurality of rotatable cylinders (1, 1A, 1B), Fig. 2, not shown, may transfer the powder to the image-. bearing surface. The rotatable cylinder may be replaced by a band, or by a frusto-conical member (Fig. 4, not shown) for developing images on a vertical surface. The powder may be deposited on the rotatable cylinder by impeller means in the form of a rotatable longitudinally grooved roller (27), Figs. 5, 6, not shown, partially immersed in powder, or a helically fluted roller housed in a slotted sleeve (Fig. 7, not shown).
GB5332867A 1967-11-23 1967-11-23 Improvements in or relating to electromagnetic non-percussive printing and/or display apparatus Expired GB1224477A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB5332867A GB1224477A (en) 1967-11-23 1967-11-23 Improvements in or relating to electromagnetic non-percussive printing and/or display apparatus
FR1592488D FR1592488A (en) 1967-11-23 1968-11-21
NL6816613A NL6816613A (en) 1967-11-23 1968-11-21
DE19681810326 DE1810326A1 (en) 1967-11-23 1968-11-22 Arrangement for uniformly colored powder supply to the latent image memory of a printing or display device
BE729098D BE729098A (en) 1967-11-23 1969-02-28
US00084947A US3834350A (en) 1967-11-23 1970-10-28 Electrographic apparatus for magnetic printing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5332867A GB1224477A (en) 1967-11-23 1967-11-23 Improvements in or relating to electromagnetic non-percussive printing and/or display apparatus

Publications (1)

Publication Number Publication Date
GB1224477A true GB1224477A (en) 1971-03-10

Family

ID=10467398

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5332867A Expired GB1224477A (en) 1967-11-23 1967-11-23 Improvements in or relating to electromagnetic non-percussive printing and/or display apparatus

Country Status (1)

Country Link
GB (1) GB1224477A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee