MOZAIEK-NAALDDRUKKOP ONDER TOEPASSING VAN MAGNEETINRICHTINGEN MET MET DRUKNAALDEN VERBONDEN PLUNJERVORMIGE ANKERS.

摘要

A magnetically actuated printing needle of the type used in mosaic needle printing heads having printing needles moved by an axially movable armature connected to the needle is disclosed wherein the needle is provided with an armature received portion having a varying surface configuration locked into a bore in the armature by cold press forming of the armature after the needle is inserted thereinto.