Voltage control bar for electrophotography
AssigneeInternational Business Machines Corporation
InventorsGary S. Beardsley, Michael H. Lee
Life of this patent
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Abstract
An electrophotographic apparatus is provided with an electrically conductive voltage control bar between the photoconductor drum or belt and the developer or developer/cleaner roll. The voltage control bar prevents toner filming on said cleaning roll, and makes it possible for that roll to be made of an insulating material such as molded plastic.
Claims5
An electrophotographic apparatus comprising a photoconductor drum or belt and a developer or developer/cleaner roll in a fixed position so that a space is provided between said drum or belt and said roll, a developer mix of toner and carrier in the form of chains provided in the space between said drum and said roll, said space being chosen so that said chains do not simultaneously contact both said drum and said roll, said apparatus characterized by the improvement that an electrically conductive voltage control bar is inserted into said space between said photoconductor drum or belt and said roll whereby toner buildup on said roll is minimized.
Dependencies are inferred from the claim text.