Electrostatic transfer process and apparatus for carrying out th

Details Electrostatic transfer process and apparatus for carrying out th Electrostatic transfer process and apparatus for carrying out th

1977-12-12

1979-01-30

Lucas, Jay P.

Recorders

Electric recording

Electrochemical

346153, G03G 15052

Patent

active

041375378

ABSTRACT:
An electrostatic transfer process and apparatus for transferring an image comprised of letters, symbols and patterns onto a sheet of plain recording paper from an electrostatic latent image forming material comprised of a conductive substrate and an insulating layer formed on the substrate. The insulating layer surface of the electrostatic latent image forming material is uniformly charged with electrostatic charges. The charges of only image forming areas of the insulating layer surface are subsequently erased so that an electrostatic latent image is formed in the image forming areas. Thereafter, the electrostatic latent image forming material moves past a developing electrode to which is applied a voltage of the same polarity as that of the charges applied to the insulating layer of the electrostatic latent image forming material. Simultaneously, a developer having a charge of the same polarity as that of the voltage applied to the developing electrode is supplied to the image forming areas of the insulating layer surface to allow the developer to adhere to the area wherein the charges have been removed or diminished. Thus, the latent image is visualized. The resultant visualized image is transferred onto a sheet of plain paper for obtaining a clear recorded image.

REFERENCES:
patent: 3045587 (1962-07-01), Schwertz
patent: 3178718 (1965-04-01), Baron
patent: 3484792 (1969-12-01), Gold
patent: 3582206 (1971-06-01), Burdige
patent: 3930257 (1975-12-01), Quang et al.
patent: 3946401 (1976-03-01), Young
patent: 4016813 (1977-04-01), Pressman

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