Apparatus for making a recording of an electrostatic charge patt

Details Apparatus for making a recording of an electrostatic charge patt Apparatus for making a recording of an electrostatic charge patt

1975-07-10

1977-01-25

Lucas, Jay P.

Recorders

Electric recording

Electrochemical

340173R, G11C 1140, G03G 15056

Patent

active

040054365

ABSTRACT:
An electrostatic charge pattern is developed into a visual image with the aid of a current-sensitive recording element that is disposed against one face of an array of a plurality of field-effect devices. The charge pattern, on an electrically insulating film, is disposed against an opposite face of the array. An electrical circuit, connected to source and drain regions of the field-effect devices, causes current to flow in each of the devices in accordance with the intensity of each elemental portion of the charge pattern adjacent a respective channel region in each of the devices. The electrical current causes a color change in the recording element in accordance with the intensity of the current flowing therethrough.

REFERENCES:
patent: 3074066 (1963-01-01), Conerly
patent: 3233244 (1966-02-01), Winterhalter
patent: 3786441 (1974-01-01), Engeler
patent: 3875567 (1974-04-01), Yamazaki
patent: 3886530 (1975-05-01), Huber

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