Method to eliminate cross coupling between blackness points at p

Details Method to eliminate cross coupling between blackness points at p Method to eliminate cross coupling between blackness points at p

1991-01-03

1992-06-09

Miller, Jr., George H.

Recorders

Electric recording

Electrochemical

346155, G01D 1506

Patent

active

051211440

ABSTRACT:
Method and device to improve the printing quality and thereby the readability of the print of electrographic printers. An information carrier is brought into electric cooperation with at least one screen grid shaped electrode matrix, which by control in accordnace to the configuration desired pattern at least partly opens and closes passages through the matrix by galvanic connection to this to at at least one voltage source. Through thus opened passages electrical fields are exposed for attraction of pigment particles against the information carrier. This is locateable between said electrode matrix and a background electrode. This contains counter electrodes (8,8') in the form of galvanically separated sections, which are suibstantially symmetrically located above respective line of passages in the electrode matrix.

REFERENCES:
patent: 4990942 (1991-02-01), Therrien et al.
patent: 5006869 (1991-04-01), Buchan et al.
patent: 5036341 (1991-07-01), Larsson

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