USPatentGranted
I4

Transfer of magnetic toner particles with a directed magnetic field

Granted 4 Apr 1978 · no office action yet

Current assignee: General Electric Company · originally General Electric

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Inventors: Raymond E. Skoda, Joseph A. Lahut · Examiner: · AU 235 · TC 2300

Application
788292
filed 18 Apr 1977
Publication
Not published
not published
Patent· this page
US T969009
granted 4 Apr 1978

Life of the patent

3 dated events
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Abstract

magnetic toner images are transferred from a latent magnetic image on a magnetic recording surface to hard copy medium, which may be paper, by (1) disposing the hard copy medium in contact with a toner image; and (2) applying a transfer magnetic field in the region of contact. The transfer magnetic field is directed tangential to the recording surface and has a gradient directed from the recording surface to the copy medium. The intensity of the magnetic transfer field may be greater or less than the intensity which is necessary to erase the latent magnetic image in the magnetic recording surface.

Classifications

3 codes
IPC · International Patent Classification
Section G — Physics
  • G03G19/00
USPC · US Patent Classification
346/74.1118/644

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