| 摘要 |
For lubricating magnetically operated printing needles (4) guided in guide tubes (6), the tube extends from the magnetic system (2, 3, 5, 9) almost up to the needle opening (10). The tube rests in its central region on a porous pad (7) soaked in a lubricant, and the tube has, in this region, a wall which is perforated by bores (8). <IMAGE> |
