Xerographic printing machine with an improved transfer unit

Details Xerographic printing machine with an improved transfer unit Xerographic printing machine with an improved transfer unit

1991-11-29

1993-01-26

Grimley, A. T.

Photocopying

Contact printing

Light boxes

250325, 361225, G03G 1516

Patent

active

051826054

ABSTRACT:
A xerographic printing machine with at least two rollers disposed so that their axes are arranged parallel to each other. An endless belt, supported by the rollers, has a volume resistance within the range of 10.sup.9 to 10.sup.14 .OMEGA.cm. A photoreceptor is disposed adjacent to the endless belt. An endless belt charging device is disposed opposed to the photoreceptor in such a way that the endless belt is located between the endless belt charging device and the photoreceptor. An electrostatically charged toner supported on the surface of the photoreceptor is transferred to a print media. A guide member is disposed between the photoreceptor and the roller located upstream of the endless belt as viewed in the advancing direction of the endless belt. The guide device guides the advancing print media to bring the print media into contact with the endless belt.

REFERENCES:
patent: 3966199 (1976-06-01), Silverberg
patent: 4114536 (1978-09-01), Kaneko et al.
patent: 4849795 (1989-07-01), Spehrley, Jr. et al.
patent: 5027159 (1991-06-01), Oda et al.
patent: 5061967 (1991-10-01), Isobe

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