| 摘要 |
<p>The drive has a motor (30) with a rotatable output shaft (31) for driving a roller at which a sheet is wounded. A brake mechanism (40) comprises a brake element i.e. disk brake, that is mounted on the shaft and rotated with the shaft, and another brake element i.e. brake disc, that is movable along a direction. A spring presses the latter brake element on the former brake element. A electro magnet moves the latter brake element in outer contact with the former brake element against compressive force of the spring. The mechanism has an end plate mounted at an opening of a housing (41).</p> |
