Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1979-07-16
1981-02-24
Moses, Richard L.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
1525652, 118652, G03G 2100
Patent
active
042524350
ABSTRACT:
To clean toner, particularly magnetic toner, from a photoreceptor, an improved cleaning subsystem includes a foam roll cleaner in contact with and mounted to rotate in a tangential direction opposite to that of the photoreceptor. The foam roll cleaner is mounted within a housing, and a baffle extends upwardly at an angle from the housing into the pre-nip zone between the photoreceptor and the cleaner in extremely close proximity to both the photoreceptor and to where the cleaner initially contacts the photoreceptor during rotation of the cleaner. This arrangement generates a positive pressure within the housing and to relieve this positive pressure without expelling any toner from the housing, filtered openings are provided in the housing. To discharge or release toner from the foam roll cleaner during operation of the cleaning subsystem, the cleaner is vibrated. Any magnetic toner accumulating on the interior surfaces of the housing are moved or conveyed downwardly into the bottom portion of the housing by magnetic conveyors located on the exterior of the housing.
REFERENCES:
patent: 3942889 (1976-03-01), Kurita et al.
patent: 3955235 (1976-05-01), Meyer
patent: 4181425 (1980-01-01), Higaya et al.
Moses Richard L.
Reichert Earl T.
Xerox Corporation
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