Recorders – Magnetographic
Patent
1981-04-13
1983-10-18
Braun, Fred L.
Recorders
Magnetographic
355 3TR, 355 14TR, G01D 1512, G03G 1516
Patent
active
044108966
ABSTRACT:
A magnetographic copier system in which images recorded on a magnetic tape are developed by toner with magnetic properties and where the toner particles are also electrostatically charged. A piece of paper is brought into contact with the tape at a toner transfer station and a first momentary electric field of the proper polarity and orientation is then used to transfer the developed toner images from the tape to paper. The paper and tape segments with the images are then separated and are moved away from the toner transfer station. An electrode external to the transfer station is then used to apply another electric field of the same polarity to the developed toner images on the paper to prevent the toner from being disturbed by the next occurrence of the first electric field for subsequent toner images being transferred to the paper.
REFERENCES:
patent: 3647292 (1972-03-01), Weikel
patent: 3830589 (1974-08-01), Allen
patent: 3976370 (1976-08-01), Goel et al.
patent: 3996466 (1976-12-01), Davis
patent: 4140962 (1979-02-01), Quinn
patent: 4175265 (1979-11-01), Nelson et al.
patent: 4217819 (1980-08-01), Tluck et al.
Nelson Alfred M.
Rasekhi Houshang
Braun Fred L.
Funk Joseph F.
Shanahan Michael H.
Wang Laboratories, Inc.
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