Importance

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Abstract

An ion flow electrostatic recording process and apparatus utilizes an ion flow record head comprising an insulating layer, one surface of which is formed with a plurality of record electrodes, with ion flow openings formed so as to extend through the electrodes and the insulating layer. A source of corona ions is disposed on one side of the record head on which the record electrodes are disposed. An electrostatic record paper comprises a dielectric record layer on a conductive record layer, and is disposed in superimposed relationship with the insulating layer of the head. A record signal is applied across the conductive support layer and the record electrode to create an electric field within the opening which is effective to control the passage of a corona ion flow from the source through the opening, thus producing a record on the electrostatic record paper. A hermetically sealed chamber is defined by the ion flow head and a support frame therefor, and pressurized air is introduced into the chamber to prevent a plugging of the openings while the record paper is maintained in abutment against the head.

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First Claim