| 摘要 |
A conventional dual type thermal printer has only one drive roller and one motor, and the guide portion of its paper feed mechanism is fixed, and thus, there is a problem that the width of paper to be printed is fixed and the print speed has to be the same with regard to two systems. Two platen rollers (2a, 2b) positioned coaxially and rotatably supported independently of each other are provided in parallel with one opposing thermal head (3), and, there are provided paper feed means (9a, 9b) for separately transporting heat sensitive paper inserted between these platen rollers and the thermal head, respectively, and a movable frame (20) for holding the thermal head, having regulating pieces (24a, 24b) at both ends thereof for regulating end portions of the heat sensitive paper and slidably attached in the axial direction of the platen rollers. <IMAGE> |
