Needle printing mechanism

A needle printing mechanism with two or more groups of printing needles for simultaneous printing of two or more rows of symbols on a registering medium. Each group A, B of printing needles 40, 41 is manoeuvred by a corresponding group of manoeuvring magnets, which have essentially straight cores, forming a right angle with the printing needles. Each core is configured as a metal sheet 10, 11, which at its end away from the needle group A or B is joined to the similarly situated core or cores in the other group or groups by means of a yoke 12, constructed as a single piece with the corresponding core plate 10, 11.