Corona charging apparatus and method

Details Corona charging apparatus and method Corona charging apparatus and method

1976-10-12

1978-05-09

Dixon, Harold A.

Radiant energy

Corona irradiation

Charging of moving object

H01T 1904

Patent

active

040888924

ABSTRACT:
Disclosed are apparatus and method for electrostatically charging a moving electrophotographic film to a predetermined charge potential over wide variations in film movement speed. The apparatus comprises a corona discharge electrode, high voltage potential means for producing corona current flowing from the corona discharge electrode to the film, an electrically conductive control electrode extending parallel to and across the width of the film at a position less than 1/4 inch from the film and in the direction of film movement from the corona discharge electrode, and biasing means for biasing the control electrode at a potential proportional to the film predetermined charge potential for limiting the charge on the film to the predetermined charge potential.

REFERENCES:
patent: 2777957 (1957-01-01), Walkup
patent: 2778946 (1957-01-01), Mayo
patent: 2856533 (1958-10-01), Rosenthal
patent: 2890343 (1959-06-01), Bolton
patent: 3527941 (1970-09-01), Culhane et al.

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