Non-contact magnetic toner transfer system

Details Non-contact magnetic toner transfer system Non-contact magnetic toner transfer system

1978-03-03

1979-03-27

Lucas, Jay P.

Recorders

Magnetographic

118653, 427 14, G03G 1900

Patent

active

041468988

ABSTRACT:
Apparatus for printing images on paper or other print medium, including a recording head which records magnetic images on a record tape, means for applying magnetically-attracted toner to the images, transports which hold the record tape and paper a small distance apart to leave an air gap of about 4 thousandths inch between them, a pair of electrodes located so that the toner on the record tape and the paper are sandwiched between the electrodes, and a high voltage source which applies a brief pulse of high voltage of a duration on the order of one millisecond between the electrodes, to form an electric field that propels the toner particles across the air gap from the record tape to the paper.

REFERENCES:
patent: 2857290 (1958-10-01), Bolton
patent: 2954006 (1960-09-01), Lawrence
patent: 3292171 (1966-12-01), Wilson
patent: 3400213 (1968-09-01), Hell
patent: 3735416 (1973-05-01), Ott
patent: 3754963 (1973-08-01), Chang
patent: 3941084 (1976-03-01), Kurita
patent: 3956523 (1976-05-01), Cantarano
patent: 4036175 (1977-07-01), Phillips

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