Toner recovery device
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United States of America Patent
Stats
-
Dec 8, 1987
Grant Date -
N/A
app pub date -
Oct 16, 1986
filing date -
Oct 21, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A toner fill sensor for a toner recovery device with a recovery box into which residual toner is scraped from the latent image carrying member with a cleaning means, has a window comprising a transparent or translucent housing projecting upwardly through said recovery box; an optical sensor having a light emitting and receiving elements arranged across said projected housing; a flat float member vertically movable on top of the toner recovered in the recovery box; and a light shielding flag erected on said float member at the position corresponding to the projected housing so that as the level of toner recovered rises, the light shield of the float member blocks the light path of the optical sensor, providing a toner fill signal.
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