| 摘要 |
There is provided an aligning device for a printing member in a printer in which it is presupposed to use a printer of a one-end supporting structure, the printing member (thermal transfer ribbon 3) can be used by selecting one of center alignment and one-end alignment, and the compatibility of printing data is taken into account. Focusing on provision of a rack and pinion structure within a cylindrical shaft 22, there are provide a pinion 16 rotatably provided within the cylindrical shaft 22 on a center line C across a width direction of the transfer path and a pair of racks 17 and 18, a push-in projection 19 configured to push the rack 17 toward the push-in end 22B of the cylindrical shaft 22, a positioning projection 20 configured to detachably engage with any of a plurality of positioning engagement holes 26 defined in the cylindrical shaft 22 along an axial direction. The push-in projection 19 drives the racks 17 and 18 and the pinion 16 by the pushing of the core tube 21 into the cylindrical shaft 22, and the positioning projection 20 engages with one of the positioning engagement holes 26 in the cylindrical shaft 22, and whereby the core tube 21 is positioned at the central position across the width direction. |
