Patent ID: 8206046

Claim:
A recording device comprising: a first recording unit that comprises: a first recording head for recording images on one side of a recording medium, and a first platen roller disposed opposite the first recording head, and conveys the recording medium by rotation of the first platen roller; a second recording unit that is located on the downstream side in the recording medium transportation direction from the first recording unit, comprising: a second recording head for recording images on the other side of the recording medium, and a second platen roller disposed opposite the second recording head, and conveys the recording medium by rotation of the second platen roller; and a roller drive unit comprising: a motor with a motor gear; an additional gear connected to the motor gear; at least one first intermediate gear connecting the additional gear to a gear of the first platen roller; and a plurality of second intermediate gears, comprising: a clutch gear, comprising: an inside clutch gear that engages the additional gear; an outside clutch gear; and a coil spring; and a further gear connecting the outside clutch gear to a gear of the second platen roller; wherein gear ratios of the gears are such that an angular velocity of the second platen roller is higher than an angular velocity of the first platen roller.