ELECTROPHOTOGRAPHIC PRINTER

摘要

PROBLEM TO BE SOLVED: To provide an electrophotographic printer in which a photoconductor drum and a transfer drum can be supported without causing misalignment and thrust load with a simple component configuration , and can easily be attached.

SOLUTION: The electrophotographic printer comprising the photoconductor drum 1 and the transfer drum 2 is provided in which each of the photoconductor and transfer drums is fitted on a drum body 12 or 13 so as to be extractable therefrom towards a front side, the shaft at a back side of the drum body being supported in a cantilever fashion by a bearing unit 16. The shaft at the front side of the drum body is supported by a movable bearing 17 or 18 which comprises a shaft holding cylinder 24 axially extractable from the shaft and a housing 22 or 23 supporting the shaft holding cylinder via a bearing 30. Two such movable bearings are supported on a swingable frame 21 mounted so as to be swingable on a frame F2at the front side. The housing 23 of the movable bearing for the transfer drum and the housing 31 of the bearing unit supporting the shaft at the back side of the drum body for the transfer drum are housings decentered so that angularly displacing both housings makes the transfer drum movable towards and away from the photoconductor drum.

COPYRIGHT: (C)2009,JPO&INPIT