Magnetic display unit

Details Magnetic display unit Magnetic display unit

1987-08-31

1988-06-07

Evans, Arthur G.

Recorders

Magnetographic

346 745, G01D 1510

Patent

active

047500034

ABSTRACT:
A magnetic display unit in which a magnetic panel encloses a colored liquid in which magnetic particles are dispersed. A recording head moves over the panel and has a plurality of electromagnets arranged with at least three electromagnets on each of parallel lines inclined to the direction of movement of the recording heads with all the electromagnets being arranged on equal pitch perpendicular to this movement direction. The electromagnets are selectively actuated as the recording head moves to write a dot pattern.

REFERENCES:
patent: 3947879 (1976-03-01), Stauffer
patent: 4414554 (1983-11-01), Springer

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