| 摘要 |
<p>A thermal transfer printer comprising a printhead for transferring ink from an ink-carrying tape to a substrate on which printing is to be effected and a tape drive comprising two motors, at least one of which is a stepper motor, two tape spool supports on which spools of tape may be mounted, each spool being drivable by a respective one of the said motors and a controller for controlling energisation of the motors. The controller is operative to energise the motors such that tape may be transported in at least one direction between spools mounted on the spool supports and past said printhead, and to energise both motors to drive the spools of tape in the direction of tape transport, to energise the motors to drive the spools of tape to position an area of tape adjacent to the printhead such that ink is removed from the area of the tape onto the substrate to effect printing, to monitor tension in tape being transported between spools of tape mounted on the spool supports, and to energise at least one of the motors to maintain tension in the tape at an acceptable level.</p> |
