Transfer device

Details Transfer device Transfer device

1988-12-06

1990-02-20

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355276, G03G 1516, G03G 1514

Patent

active

049030817

ABSTRACT:
A transfer device is provided with a cleaning unit having a magnetic brush roller and functions to electrostatically transfer a toner image on an image carrier to a transfer material held on a dielectric body. The device has a transfer charger for applying DC electric field to the portion of the dielectric body opposite to the image carrier during transfer so that the toner image on the image carrier is transferred to the transfer material. The device also has means for applying AC voltage to the transfer charger within a given time during non-transfer, and a DC charger for applying DC electric field with the same polarity as that of the toner particles frictionally electrified to the surface of the dielectric body at least within a given time.

REFERENCES:
patent: 3847478 (1974-11-01), Young
patent: 4415256 (1983-11-01), Inoue et al.

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