Toner filter arrangement
AssigneeXerox Corporation
InventorJohn S. Bernhard
Life of this patent
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Abstract
A toner filter arrangement adapted for use in a cleaning station of a xerographic reproduction machine whereby foreign matter and other contaminants are removed from residual toner prior to its collection in a disposable or re-use container or return to the developer station. The filter arrangement comprises a housing having an input opening through which removed toner enters and an output opening through which filtered toner exits by gravity fed. The housing includes a spiral brush mounted for rotation on a shaft centrally located within the housing and a stationary open mesh screen coaxially located with respect to the shaft. Rotation of the brush operates to sift toner through the screen to the outlet of the filter housing.
Claims6
An electrophotographic reproduction machine comprising a cleaning station for removing residual toner particles remaining on an imaging surface after completion of a copy cycle, a toner filter including a housing having a first opening through which said residual toner enters from said cleaning station, a helically wound fiber brush mounted for rotation in said housing, an open mesh screen supported intermediate said housing and said brush, the interior of said screen being in communication with said first opening, a second opening in said housing located to gravity feed toner exiting said housing, whereby rotation of said brush causes toner to sift through the openings in said screen and fall by gravity through said second opening.
Dependencies are inferred from the claim text.