mass that has to be moved on the other hand are concerned it should be realized that in fact contradictory requirements are to be met namely to impart upon an armature magnetic properties which require simply a particular amount of magnetizable material but on the other hand for reasons of rebounding prevention the mass of the armature is to be made as low as possible in addition it seems to be contradictory to provide the armature in the attenuating region with resilient or elastic properties such a compound body synthetic plus magentizable metal can be made in that the armature proper is comprised basically of a holder for the print needle parts of the print needle and the holder are surrounded by i e embedded in the synthetic which defines the aforementioned abutment surface against the attenuating disk a magnetic i e magnetically conductive armature shaft or better sleeve is then added on to this synthetic part preferably then the magnetically conductive part of the armature construction as a whole should have a minimum in mass the required accurate movement of the armature is in furtherance of the invention improved in that a flux ring or yoke ring surrounds the electromagnetic coil which penetrates the armature sleeve and a support and guiding ring is fastened to this flux or yoke ring whereby the center opening of the support and guiding ring guides the armature shaft this proposed construction is of advantage because a retraction spring can be provided between the armature and the support ring the spring bears against a synthetic shoulder of the armature as well as an axial face of the support and guiding ring the invention moreover permits a clear cut separation of functional groups namely an electromagnetic drive group generally.