Electrostatic imaging apparatus

Details Electrostatic imaging apparatus Electrostatic imaging apparatus

1975-11-10

1977-08-02

Coven, Edward M.

Printing

Embossing or penetrating

Special-article machines

101122, G01D 1506

Patent

active

040389162

ABSTRACT:
An apparatus for forming solid character charge patterns on a dielectric surface in a non-impact printing system. The apparatus comprises a corona source of ions and a rotatable stencil drum surrounding the corona source to shape the ions generated by the corona source and accelerated therefrom by electrostatic forces into solid patterns of charge. A coaxial stationary shield is provided surrounding the stencil drum to capture the solid patterns of charge. A series of grid covered openings are longitudinally disposed along the shield to form a print station. Means are provided to electrically bias the individual grids covering the openings in the shield at a potential which either blocks the passage or enhances the transmission of patterns of charge through the shield onto an adjacent dielectric surface.

REFERENCES:
patent: 2930847 (1960-03-01), Metzger
patent: 2944147 (1960-07-01), Bolton
patent: 3234904 (1966-02-01), Von Wagner
patent: 3261284 (1966-07-01), Lynott et al.
patent: 3277818 (1966-10-01), Cone
patent: 3314360 (1967-04-01), Foster
patent: 3321768 (1967-05-01), Byrd
patent: 3647291 (1972-03-01), Pressman et al.
patent: 3779166 (1973-12-01), Pressman et al.

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