| 摘要 |
Drive roller (1) for X-Y plotters, cutters and the like for driving sheet material (4), pinched betweed said drive roller and at least one pinch roller (5), to be moved to and fro, provided with a number of blunted wedges which may be arranged in rows in parallel with the axis of said drive roller, said blunted wedges having a flat top surface which is preferably rectangular with the longest side of the rectangular extending in the direction of said axis of said drive roller. <IMAGE> |
