Formation of electrostatic charge patterns

Details Formation of electrostatic charge patterns Formation of electrostatic charge patterns

1973-11-30

1976-01-13

Lawrence, James W.

Radiant energy

Source with charged plate-type detector

250324, 346 74EB, 346 74ES, G01d 1506

Patent

active

039327515

ABSTRACT:
A method of recording an electrostatic charge image or pattern representing information to be recorded, such discharge pattern being generated in the interior of an envelope or chamber comprising as a portion of its wall a dielectric target towards which the charges are projected, characterised in that a corresponding electrostatic charge image is produced externally of the envelope on the exterior surface of the dielectric target by projecting such charges against the target while the exterior surface of the target is electrostatically charged with charges of a polarity opposite to the interior charge pattern or is being exposed to such opposite charging from an external charging source. Optionally, a separate dielectric material is arranged outside the chamber in contact with the exterior target surface and the external charge pattern is produced on the separate dielectric material which can be removed.

REFERENCES:
patent: 2965481 (1960-12-01), Gundlach
patent: 3001849 (1961-09-01), Walkup
patent: 3041611 (1962-06-01), Moss
patent: 3508477 (1970-04-01), Groo
patent: 3576583 (1971-04-01), Uno
patent: 3757351 (1973-09-01), Simms
patent: 3774029 (1973-11-01), Muntz et al.

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