Toner transfer system

Details Toner transfer system Toner transfer system

1976-10-28

1979-11-20

Lucas, Jay P.

Recorders

Magnetographic

118657, 346153, G03G 1900

Patent

active

041752651

ABSTRACT:
Apparatus for printing images on paper or other print medium by transferring toner on a magnetic tape onto the paper, using a voltage pulse applied between electrodes located respectively behind the tape and behind the paper. The electrode behind the tape is narrower than the tape, so that the opposite edge portions of the tape serve as insulators that prevent the formation of electric arcs between the electrodes. The voltage is applied in the form of a high voltage pulse on the order of 1500 volts lasting on the order of one millisecond, to transfer toner, and is followed by a sustained voltage on the order of 150 volts for preventing the toner particles from shifting position on the paper.

REFERENCES:
patent: 2771505 (1956-11-01), Avery et al.
patent: 2932278 (1960-04-01), Sims, Jr.
patent: 3182591 (1965-05-01), Carlson
patent: 3735416 (1973-05-01), Ott
patent: 3831178 (1974-08-01), Smith
patent: 3852525 (1974-12-01), Ichioka
patent: 3858514 (1975-01-01), Beebe
patent: 3861940 (1975-01-01), Forgo et al.
patent: 4025927 (1977-05-01), Nelson
patent: 4030105 (1977-06-01), Neukevmans
patent: 4046074 (1977-09-01), Hochberg

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