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AssigneeMAN Roland Druckmaschinen AG
InventorsHans Mamberer, Reinhard Zeller, Otto Spang
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To prevent printing of imperfect copy, by a printing machine having a lifter-type inker, which is caused by cyclically recurring rotary oscillations or vibrations, the braking torque introduced upon contact of a lifter roller (3) with the first milling and distribution roller (4) of the inker is prevented from propagating through the gearing drive of the respective inker rollers. To prevent such propagation, the first milling and distributing roller (4) is yieldingly driven at machine speed, for example by frictional drive, transmitted through an elastic surface (6) of a "soft" roller in frictional drive engagement with the first milling and distributing roller (4) as well as with a positively driven subsequent milling and distributing roller (7), or a circumferentially resilient yielding coupling (13) is interposed between the drive shaft element (8) for the first milling and distibuting roller and a positive gear drive (10, 11, 12). Preferably, the inertia of the first milling and distributing roller is high with respect to that of the lifter roller (3), and is, for example, enhanced by a fly-wheel (4 a).
Lifter-type inker, for a rotary printing machine driving certain rollers therein at a machine speed, having
Dependencies are inferred from the claim text.