Cleaning device for toner detecting sensor

Details Cleaning device for toner detecting sensor Cleaning device for toner detecting sensor

1990-02-09

1990-10-16

Braun, Fred L.

Photocopying

Contact printing

Light boxes

118691, 355246, 355299, G03G 2100

Patent

active

049639293

ABSTRACT:
A toner cleaning device for a toner detecting sensor for cleaning toner without scratching the surface of area to be detected. Two sheets of blades in two different length, one being shorter than the other, are atached to a rotating shaft for cleaning toner. A first blade does not reach the surface of the sensor but removes most of the toner accumulated on the surface to be detected except the toner in the area closely contacted with the surface, while a second blade contacts slidably and softly with the surface to be detected thereby removeing the toner accumulated thereon.

REFERENCES:
patent: 3778146 (1973-12-01), Knapp
patent: 3859691 (1975-01-01), Katayama et al.
patent: 3940282 (1976-02-01), Hwa
patent: 4134673 (1979-01-01), Fisher
patent: 4202437 (1980-05-01), Gordon
patent: 4361922 (1982-12-01), Karal
patent: 4621386 (1986-11-01), Hill
patent: 4711551 (1987-12-01), Fujio et al.
patent: 4768062 (1988-08-01), Tanzawa et al.

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