Magnetic toner transfer method and apparatus

Details Magnetic toner transfer method and apparatus Magnetic toner transfer method and apparatus

G - Physics

03

G

32/12, 117/3.5

G03G 13/16 (2006.01) G03G 15/16 (2006.01) G03G 19/00 (2006.01)

Patent

CA 1166901

Magnetic Toner Transfer Method And Apparatus Abstract In magnetographic printing, method and apparatus are disclosed for providing letter-quality, relatively high speed transfer of toner particles from a magnetic tape to paper. A pretransfer force (f1) holding the toner to the tape is established which may be magnetic, or both magnetic and electrostatic in nature. The transfer operation comprises effecting relatively high speed approaching movement of the tape toward the paper in a controlled manner such that forces (f2) exerted on the toner particles due to the rapidely closing movement are collectively less than the toner-holding force (f1) for any instantaneous separation between the tape and paper. The operation may include the use of a bias voltage to generate a component of the electrostatic holding force.

394225

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