| 摘要 |
<p>A printing apparatus comprising a housing (1), a printhead (4) mounted on a printhead support assembly which is displaceable relative to the housing in a direction parallel to a print ribbon path, a first drive mechanism for displacing the printhead support relative to the housing, a peel off roller (33) mounted on the printhead support assembly and displaceable with the printhead in the said parallel direction, and a second drive mechanism for displacing the printhead relative to the printhead support assembly and the peel off roller between a ready to print position adjacent the print ribbon path and a printing position in which the printhead would contact a print ribbon on the path. A cam mechanism (53) is provided which is engaged as a result of displacement of the printhead support assembly to a predetermined position and when engaged causes retraction of the printhead away from the ready to print position to a position spaced from the peel off roller and the print ribbon path.</p> |
