Image forming apparatus having detection electrode outside developing thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 31, 2002
Grant Date -
Sep 6, 2001
app pub date -
Jan 11, 2001
filing date -
Jan 13, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An image forming apparatus includes an image bearer bearing a static image and an exchangeable type developing apparatus for developing the static image on the image bearer. The developing apparatus includes a developing chamber having a developing roller in an opening opposite to the image bearer, and a containing chamber containing a developer to be supplied to the developing chamber. A detection electrode is disposed outside the developing device and in which a voltage is induced. A detection device detects an amount of the developer in the containing chamber on the basis of an induced voltage in the detection electrode.
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