| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a platen gap adjustment mechanism having a simple configuration, which is capable of keeping the gap between the printhead and print medium constant while holding the printhead in the same posture. <P>SOLUTION: The platen gap adjustment mechanism 25 includes a carriage guide shaft 22, a carriage drive 30 that is supported on the carriage guide shaft 22 pivotably around the axis L1 of the carriage guide shaft 22, and a main carriage 31 that carries the printhead 13 and is supported on the carriage drive 30 pivotably around a parallel axis L2 that is parallel to the carriage guide shaft 22. When the main carriage 31 moves up tracking the thickness of the print medium 101 conveyed over a platen roller 14 in a direction where the main carriage 31 is away from the platen roller 14, the carriage drive 30 pivots up around the axis L1 in a second direction D2, and the main carriage 31 pivots down around the parallel axis L2 in a third direction D3, to keep the posture of the printhead 13. <P>COPYRIGHT: (C)2013,JPO&INPIT |
