an electromagnetic printing hammer device including a permanent magnet having a pair of electromagnetic pole - faces spaced apart from each other by a gap . a hammering element formed of a permanent magnet at least in one portion thereof is located in the gap for movement in a plane parallel to the pole - faces . the hammering element exerts a force of impact on the back of a type as a thrust is applied thereon when a pulse current is passed to the electromagnet and supported by bearings for linear movement in a direction in which it exerts a force of impact . the features of the hammer device include any one of the followings : a spring providing an initial force to urge the hammering element in a direction in which a thrust is applied thereto ; a rear end of the permanent magnet passing through the gap at least immediately before the exertion of the force of impact by the hammering element is finished ; the yokes constituting the electromagnetic poles extending from electromagnetic coils in the same direction as the direction of movement of the hammering element ; the permanent magnet and the pole - faces differing from each other in height ; the permanent magnet being formed of a plastic magnet ; a rear end of the permanent magnet and that of the pole - faces being spaced apart from each other by a spacing interval of uneven distance ; and a stopper to halt the spring force before type face impact .