Electrostatic recording apparatus and method

Details Electrostatic recording apparatus and method Electrostatic recording apparatus and method

1979-09-24

1981-03-24

Wolff, John H.

Recorders

Electric recording

Electrochemical

G03G 1504, G06K 1514

Patent

active

042583730

ABSTRACT:
The disclosure is of electrostatic recording apparatus including a plurality of groups of printing electrodes on one side of a sheet of printing paper and a plurality of base or counter electrodes on the other side of the paper. Corresponding electrodes in each group of printing electrodes are connected together to form sub-groups of printing electrodes. Data signals, to be printed, are connected to electrodes in all of the sub-groups of printing electrodes at the same time, and selected base electrodes are energized to select the associated printing electrodes which actually perform a printing operaion.
According to the invention, the counter electrodes are operated in pairs, with two adjacent counter electrodes being energized at any instant. However, the counter electrodes are not operated sequentially in pairs, buy they are paired randomly in the series, with favorable spacing being provided between sequentially operated pairs.

REFERENCES:
patent: 3564556 (1971-02-01), Tsukatani
patent: 3653065 (1972-03-01), Brown
patent: 3797021 (1974-03-01), Hida
patent: 3798609 (1974-03-01), Frohbach
patent: 3979760 (1976-09-01), Ta
patent: 4054885 (1977-10-01), Rothgo rdt

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