| 摘要 |
An image forming device includes a device main body (1), a drum unit (50), a stud (16) which is fixed to a frame of the device main body, and a drum drive transmitting gear (17) which is supported by the stud in a manner that the drum drive transmitting gear can axially rotate. The drum unit includes a unit frame (51), and a photoconductive drum (5) which is supported on the unit frame in a manner that the photoconductive drum can axially rotate, and which has a driven transmission gear (522) at one end. When the drum unit is inserted into the device main body, the drum drive transmitting gear and the driven transmission gear are engaged with each other, and an end portion of the stud can be inserted into and received by an engaging hole of the unit frame.
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