Abstract: A matrix printer comprising a printing head which is pivotable, under the influence of the braking effect of a magnetic field, about an axis which is perpendicular to the line direction and to the surface of the paper to be printed. The different printing positions of the printing head realized by said pivoting motion are utilized for printing characters with a comparatively good recognizability at a comparatively low printing speed or, as desired, for printing characters which are less rapidly recognizable at a comparatively high printing speed.Matrix printers of this kind are used, for example, in text editing systems.

Abstract: A matrix printer with a printing head which is displaceable along a paper guide in the line direction and which has a number of printing elements which have a first printing position for printing from left to right and a second printing position for printing from right to left. The printing head with its printing elements is automatically moved from the one printing position to the other printing position by variation of the impulse of movement of the printing head upon each movement reversal of the printing head by means of a position changer which is displaceable with respect to the printing head.

Abstract: A guide for directing a printing head parallel to a printing direction in a printing device, the said printing head being displaceable along two parallel, round guide rods which are maintained at a fixed distance from each other by sheet-metal clamps which extend transversely of the longitudinal direction of the rods and which are provided with bearing apertures in which the guide rods are clamped. The guide offers a comparatively high resistance against bending, so that a constant distance is maintained between printing head and record carrier.

Abstract: A guide for limiting displacement of a printing head parallel to the printing direction in a printing device. The printing head is displaceable along two parallel guide rods which are detachably connected on a supporting beam which extends parallel to the guide rods. The supporting beam is detachably connected to two side plates which extend transversely of the beam and which are provided with projections which fit in recesses provided at each of the end faces of the beam. The guide provides a mechanically stable construction that is readily detachable.