| 摘要 |
PROBLEM TO BE SOLVED: To always obtain a good printing quality by adjusting the distance between a printing head and a platen corresponding to the thickness of a recording medium. SOLUTION: This device comprises a printing part including a printing head 13 and a platen 11, a first supply route for supplying a first recording medium, a second supply route for supplying a second recording medium thicker than the first recording medium, a gap adjusting mechanism E for adjusting the interval between the printing head 13 and the platen 11, and a driving means F for driving the gap adjusting mechanism. The second supply route is provided with a sensor 34 for sensing the supplied second recording medium. The driving means F drives a motor 35 according to a signal from the sensor 34 for rotating a gear 38 via gears 36, 37 so as to drive the gap adjusting mechanism E by rotating a guide shaft 16 by rotating an axis part 16b comprising the gap adjusting mechanism E and serving as the axis of the gear 38 so that the printing head 13 is moved vertically for adjusting the interval with respect to the platen 11.
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