Image forming apparatus with toner supplying roller
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United States of America Patent
Stats
-
Dec 28, 2010
Grant Date -
Dec 13, 2007
app pub date -
Jun 13, 2007
filing date -
Jun 13, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A developing device has a developer bearing member, a housing adapted to accommodate a developer, and a supply roller adapted to supply the developer within the housing for the developer bearing member. The supply roller has an outer circumferencial foam layer made of resin or rubber. The foam layer has an air permeability of 150-200 ml/cm.sup.2/s, a hardness of 50-200 N, and an average cell density of 20-40 per 25 mm width.
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Cited Art Landscape
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