Rewinding coil for rewinding e.g. label carrier band of label printer, has button that is coupled to movable parts of bases to move parts selectively between positions in which projection is positioned at points of another projection

摘要

The coil (100) has a resilient element e.g. spring, that provides biasing force to position a projection i.e. cam follower, at a maximum point of another projection i.e. another cam follower. A button (60) is coupled to movable parts of sliding bases to move the parts selectively between positions in which the former projection is positioned at minimum and maximum points of the latter projection to allow expansion and contraction of external case elements (40) with respect to the sliding bases, respectively to release a continuous support of the casing elements in a selective manner.