Blade for electrophotographic device with elastic rubber member constituted by edge/nip and base portions of different materials
AssigneeBando Chemical Industries, Ltd.
InventorsYasuhiro Sako, Ken Hirotomi, Nariaki Iwasaki
Life of this patent
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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.
Claims17
A blade for an electro-photographic device comprising 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.
A blade for an electro-photographic device comprising an elastic rubber member constituted by a nip portion and a base portion which are in contact with each other and are constituted by different materials, wherein the nip portion includes a nip 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.
Dependencies are inferred from the claim text.