Developing apparatus and a developing method of an electrostatic

Details Developing apparatus and a developing method of an electrostatic Developing apparatus and a developing method of an electrostatic

1982-06-22

1984-11-06

Prescott, Arthur C.

Photocopying

Including fiber optics

355 14D, 118621, G03G 1508

Patent

active

044809115

ABSTRACT:
In an electrostatic copying apparatus of the type in which a magnetic toner is applied to an image holder such as a drum from a developing roller which in turn receives the toner from a supply roller, a source of relative positive and negative voltages is alternately applied to the developing roller. This produces electric fields which move the toner from the supply roller to the developing roller and then to the image holder with the desired relative polarities.

REFERENCES:
patent: 4265197 (1981-05-01), Toyono et al.
patent: 4292387 (1981-09-01), Kanbe et al.
patent: 4378158 (1983-03-01), Kanbe
patent: 4383497 (1983-05-01), Tajima

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