Abstract: An electromagnetic drive mechanism for a pin in a matrix printing head has a first magnet with an articulated armature, wherein a free end of the armature acts on the pin and can be returned to a disengaaged position by a recovery mechanism. The recovery mechanism comprises another articulated-armature magnet with an armature identical with that of the first magnet but with a yoke mounted on a side of the armature that faces away from a yoke of the first magnet.

Abstract: Current-fed push-pull converter. In a current-fed push-pull converter that is composed of a step-down regulator and of a push-pull controlled transformer, the transformer is connected following the step-down regulator. The converter also has push-pull switches, a transformer unit and at least one DC voltage top circuit for a respective output DC voltage. The transformer unit is formed by an auto transformer.

Abstract: The invention relates to contact strip (16) for slipping over the edge (22) of a wall unit (14), whereby a longitudinal edge (20) of the contact strip is designed cliplike and the contact strip has contact areas (24) bent out of the plane of the strip. The contact areas are formed by a single row, spaced apart from each other, contact tongues (24), stamped and bent out of the plane of the contact strip and by the cliplike longitudinal edge formed with a row of individual clip elements (20) distributed over length of the strip and spaced apart from each other.

Abstract: A printing device is disclosed, consisting of a chassis (10), an abutment (40), and relative to the abutment in the direction of lines, an adjustable printing head (36) and a chassis fixed stop (16) for fixing the printing position of a print carrier (18), inserted between the printing head (36) and the abutment (40). The stop (16) is assigned a holding device (20) for holding the print carrier in its printing position, whereby the beam-shaped abutment (40) and the printing head (36) are carried on a pivoting frame (42), which on chassis (10) parallel to abutment (40) and a distance to an axis (44) is carried in a pivoted mode and by way of a pivoting drive (62-72) is adjustable.

Abstract: In a method for optically sensing markings on objects at a plurality detecting stations (10), at which the objects are transported by means of a transport apparatus through the sensing area of an optical sensing apparatus (20), an object upon non-regular sensing is automatically returned and again transported through the sensing area of the optical sensing apparatus (20) and then after a predetermined number of unsuccessful sensing attempts is automatically represented on a viewing device (30) at a central station (12) for identification of the object and/or a picture of the non-sensed object is stored in a memory (50).