Cleaning unit including a cleaning roller and a separator plate

Details Cleaning unit including a cleaning roller and a separator plate Cleaning unit including a cleaning roller and a separator plate

1995-03-06

1997-04-01

Lee, Shuk Yin

Electrophotography

Cleaning of imaging surface

Plural diverse

399350, 399357, 399358, G03G 2100

Patent

active

056171943

ABSTRACT:
There is provided a cleaning unit for removing residual toner present on the periphery of a photoconductive drum after toner image transfer, which includes: a main blade for scraping the toner from the surface of the photoconductive drum; and a cleaning roller disposed below the main blade and abutting against the periphery of the photoconductive drum. The inner space of the cleaning housing is divided into a cleaning chamber and a toner storage by a separator plate. A spacing between the lower end of the separator plate and the periphery of the cleaning roller is adjusted to preferably 1 mm to 2 mm, more preferably 1.3 mm to 1.5 mm. By thus adjusting the spacing, the toner is compressed when passing through the spacing and, hence, the toner transportation pressure is increased.

REFERENCES:
patent: 3838472 (1974-10-01), Oriel
patent: 4739370 (1988-04-01), Yoshida et al.
patent: 4975748 (1990-12-01), Koinuma et al.
patent: 5138394 (1992-08-01), Watanabe et al.
patent: 5249025 (1993-09-01), Nakazawa et al.

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