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AssigneeBando Chemical Industries, Ltd.
InventorsHarushi Nagami, Hiroshi Sanda, Takayuki Nagase, Sadaharu Nakamura
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An object of the present invention is to provide a liquid developing electrographic device roller suppressed in volumetric variation caused by a carrier. As a means for solving the problems, the present invention provides a liquid developing electrophotographic device roller including a shaft and an elastic material layer provided around the outer peripheral side of the shaft, wherein the elastic material layer is formed by using a polyurethane obtained by reacting a polyester polyol with a difunctional isocyanate.
A liquid developing electrophotographic device roller comprising a shaft and an elastic material layer provided around the outer peripheral side of the shaft, wherein said elastic material layer is formed by using a polyurethane obtained by reacting a polyester polyol with a difunctional isocyanate.
A liquid developing electrophotographic device using a liquid developer produced by dispersing a toner in a carrier and provided with a liquid developing electrophotographic device roller comprising a shaft and an elastic material layer provided around the outer peripheral side of the shaft, wherein said elastic material layer is formed by using a polyurethane obtained by reacting a polyester polyol with a difunctional isocyanate.
Dependencies are inferred from the claim text.