Electrophotographic printer

Details Electrophotographic printer Electrophotographic printer

2008-12-24

2010-10-19

Porta, David P (Department: 2884)

Electrophotography

Having particular structure

Modular or displaceable

C399S107000, C399S116000, C399S117000

Reexamination Certificate

active

07817935

ABSTRACT:
An electrophotographic printer in which a photoconductor drum and a transfer drum can be supported in a simple component construction and in the makeup free from misalignment and development of thrust load. To this end, an electrophotographic printer comprising a photoconductor drum (1) and a transfer drum (2) is provided in which each of the photoconductor and transfer drums is fitted on a drum body (12, 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) supported on a main frame (F1) at the back side; the shaft at the front side of the drum body is supported by a movable bearing (17, 18) which comprises a shaft holding cylinder (24) axially extractable from the shaft and a housing (22, 23) supporting the shaft holding cylinder via a bearing (30); two such movable shafts are supported on a swingable frame (21) mounted so as to be swingable on a main frame (F2) at the front side; and 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 from the transfer drum so that angularly displacing the housings makes the transfer drum movable towards and away from the photoconductor drum.

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European Search Report dated Jul. 17, 2009, issued in corresponding European Patent Application No. 08163279.6.

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