Method and apparatus of charging for transfer in electrophotogra

Details Method and apparatus of charging for transfer in electrophotogra Method and apparatus of charging for transfer in electrophotogra

1987-02-26

1989-08-15

Grimley, A. T.

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G03G 1500

Patent

active

048579599

ABSTRACT:
A charging method for transfer in an electrograph device having a phtosensitive drum uses a high voltage pulse train applied to a displaceable transferring sheet to effect transfer to the sheet of an image on the photosensitive drum. A detector for detecting the speed of feed of the sheet controls the frequency of the voltage pulse train so that the number of pulses per unit displacement of the sheet is independent of the speed at which the sheet moves.

REFERENCES:
patent: 3496351 (1970-02-01), Cunningham, Jr.
patent: 3564239 (1971-02-01), Kushima
patent: 4239373 (1980-12-01), Weikel, Jr.
patent: 4348100 (1982-09-01), Snelling
patent: 4565436 (1986-01-01), Okada et al.
Abstract of the above cited Japanese Publication for "Charging Method" by Touichi Matsumura, published Mar. 28, 1980--pp. 144 E 13.

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