Photocopying – Contact printing – Light boxes
Patent
1993-06-29
1994-04-19
Pendegrass, Joan H.
Photocopying
Contact printing
Light boxes
355315, 271310, G03G 2100
Patent
active
053050673
ABSTRACT:
A device for cleaning a surface of a photosensitive drum used in electrocopying machines utilizing a xerography, laser printers, and facsimiles using normal sheets. The cleaning device includes a filter unit having a suction fan and a duct connected to the suction fan at its one end, for sucking waste toner powder, the filter unit being disposed between the discharge plate and the blade, in place of a conventional separation pole, a roller disposed between the filter unit and the blade and adapted to be supplied with a cleaning agent via a cleaning agent supplying member, the roller having, at its circumferential portion, radially extending removal fibers with a predetermined length, a contact portion provided at the other end of the duct to have the same width as the duct and adapted to separate a copied sheet from the photosensitive drum, so that a double cleaning for the drum surface is carried out.
REFERENCES:
patent: 4060235 (1977-11-01), Weikel, Jr.
patent: 4295734 (1981-10-01), Tsuda et al.
patent: 5066983 (1991-11-01), Tonomoto
Hyundai Electronics Industries Co,. Ltd.
Pendegrass Joan H.
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