Air flow control for cleaning system for reproduction apparatus

Details Air flow control for cleaning system for reproduction apparatus Air flow control for cleaning system for reproduction apparatus

1997-06-30

1999-05-04

Lee, S.

Electrophotography

Internal machine environment

Forced air circulation

399 92, G03G 2120

Patent

active

058996001

ABSTRACT:
A cleaning system for an electrostatographic reproduction apparatus for air flow control for maintaining optimum cleaning efficiency. The cleaning system includes a fan for producing an air flow to entrain residual marking particles and other debris. The fan has a filter and a variable speed blower associated therewith. A pressure transducer is associated with the filter for measuring the pressure drop across the filter, and generates a signal corresponding to the pressure drop measured by the pressure transducer. Responsive to the signal from the pressure transducer, the speed of the blower is regulated to maintain a desired optimum efficiency air flow through the filter. Of course, the speed of the blower can be quantified such that at a certain threshold speed an appropriate warning may be provided that the filter is no longer operating efficiently and needs to be cleaned or replaced.

REFERENCES:
patent: 3501899 (1970-03-01), Allen
patent: 4093369 (1978-06-01), Hewitt
patent: 4099861 (1978-07-01), Abel
patent: 5028959 (1991-07-01), Gooray
patent: 5087943 (1992-02-01), Creveling
patent: 5117262 (1992-05-01), Yamaguchi
patent: 5505763 (1996-04-01), Reighhard et al.
patent: 5689766 (1997-11-01), Hollar et al.

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