| 摘要 |
The device comprises an original reel (1) of a thermal ink ribbon (2), a rewind reel (5), traction means and at least one marking head. The device ensures that all segments of the ribbon between markings are used. The device is characterized in that it comprises a movable support (6) in which the ribbon is guided (2) in such a way that it carries out an additional run (16). It also comprises braking means (10, 11, 12, 14) of the original reel (1) so that it forces the support (6) to move by overcoming the action of an elastic element (13) thereby reducing the additional run (16) when the ribbon is pulled (2) and the original reel is locked by the braking means. After a marking (a-b), the ribbon, and, hence, the support (6), are rewound by the action of the elastic element (13) to make the next marking (b-d) right after the previous marking. The braking means are actuated by the support (6) in such a way that they are released after one or several markings. A certain amount of ribbon (2) is then unwound from the original reel (2), the reel is then stopped once again by the braking means and the process is repeated. The invention is used in markings with thermal heads.
|
