Blade for electrophotographic device with elastic rubber member constituted by edge/nip and base portions of different materials
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United States of America Patent
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Sep 25, 2012
Grant Date -
Jan 14, 2010
app pub date -
Jan 16, 2008
filing date -
Jan 29, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A blade for an electro-photographic device includes an elastic rubber member constituted by an edge portion and a base portion which are in contact with each other and are constituted by different materials, wherein the edge portion includes an edge subject to frictional wear in use and is made of ester polyurethane, and the base portion is adapted to be bonded to a support and is made of ether polyurethane. The blade undergoes minimal permanent deformation and offers excellent mechanical strength, wear resistance and compliance to the use environment.
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