| 摘要 |
A continuous paper web-moving mechanism has a supply roll on which the paper is wound and pulled from the supply roll by a drive roll that engages the paper on its surface by a pressure exerted against the paper at that point. In this preferred embodiment the pressure is exerted by a thermal printhead resiliently mounted to force the paper against the drive roll. A leaf spring is mounted at one end of the drive roll, bearing against the edge of the wound paper, providing a friction drag on the drive roll. Also, the drive roll is kept in a fixed lateral position by the force of the leaf spring, aiding in aligning the paper. The tension between the supply roll and the drive roll is such that the paper is stiffened, providing a contact with the surface of the drive roller in a tangential line.
|
