| 摘要 |
A printer of the present invention includes at least a first and a second drum unit each including a respective print drum. Angular position sensing device each are assigned to the respective print drum. A main motor included in drum drive mechanism is controlled on the basis of the output of a first or a second drum unlock key such that the print drum of the first or second drum unit is brought to a preselected home position. The printer has a compact configuration and promotes easy, efficient manipulation without resorting to conventional top-bottom movement adjustment mechanism including top-bottom moving device.
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