Self-scanning electrostatic print head for a dot matrix printer

Details Self-scanning electrostatic print head for a dot matrix printer Self-scanning electrostatic print head for a dot matrix printer

1974-11-27

1976-07-27

Rader, Ralph T.

Textiles: fiber preparation

101DIG13, 313217, B41J 318

Patent

active

039714659

ABSTRACT:
An electrostatic dot matrix printer includes a print head utilizing a self-scanning ion charge transfer system to reduce the number of dot drivers and the operating potential required for electrostatic printing. In the print head, ionization is transferred from a set of scanning anodes to a set of apertured cathodes in a cyclical aperture-by-aperture fashion. In synchronism with the cylical transfer a selected pattern of ionization is transferred from the apertured cathodes, to a set of printing anodes. The selected pattern of ionization is further transferred to a portion of electrostatic paper by a planar electrode, thereby depositing a selectively determined charge pattern on the electrostatic paper.

REFERENCES:
patent: 2944147 (1960-07-01), Bolton
patent: 3411932 (1968-11-01), Malone et al.
patent: 3545378 (1970-12-01), Childress
patent: 3648093 (1972-03-01), Kupsky
patent: 3673461 (1972-06-01), Eisenberg
patent: 3683364 (1972-08-01), Holz et al.
patent: 3699376 (1972-10-01), Caras
patent: 3821586 (1974-06-01), Ogle
patent: 3846669 (1974-11-01), Glaser et al.

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