| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thermal printer which has improved positioning accuracy in heading operation by avoiding deterioration in the positioning accuracy in the heading operation caused by deterioration in resolution of a rotation angle detection part due to a change in a ribbon diameter. <P>SOLUTION: The thermal printer performs printing-conveying operation in which an object to be transferred of the ribbon Rb is thermally transferred to paper Pa by energizing a thermal head 1 while conveying the ribbon Rb together with the paper Pa. The thermal printer includes a resolution determination part 73 that measures detection signals Ps output from the respective rotation angle detection parts 6a and 6b during the period of time that the ribbon Rb and the paper Pa are conveyed by a predetermined distance through the printing-conveying operation in predetermined determination timing, compares the respective measured results, and determines one of the two rotation angle detection parts 6a and 6b, which has higher resolution than the other. The subsequent heading operation is performed by using the rotation angle detection part 6a (6b) that is determined to have the higher resolution by the resolution determination part 73. <P>COPYRIGHT: (C)2012,JPO&INPIT |
