Arrangement in printing machines with adjustment m

专利名称：Arrangement in printing machines with

adjustment means for circumferential, axialand diagonal register

发明人：Winfried Hartung,Valentin Gensheimer申请号：US07/151986申请日：19880203公开号：US04785733A公开日：19881122

摘要：In a printing machine having means for adjusting the circumferential, axial anddiagonal register of a plurality of plate cylinders on which printing plates are secured,wherein each plate cylinder is mounted on a shaft for rotation and each printing plate hasregister markers disposed thereon outside of its respective printing and inking zone, theimprovement comprising: a register marker detection system comprising at least oneilluminating means disposed on one side of each plate for generating and projecting lightto illuminate said register markers; at least one photo-detecting means disposed on theother side of each plate for periodically detecting said light projecting through theregister markers as the cylinder rotates the printing plate and for generating

measurement signals in response thereto; and circuit means connected to said photo-detecting means for generating signals to control said cylinder register adjustmentmeans; said register markers comprising at least first and second accurate-registerapertures; and said illuminating means and said photo-detecting means being positionedsuch that the light generated by said illuminating means is detected by said photo-detecting means after passing through said apertures.

申请人：M.A.N.-ROLAND DRUCKMASCHINEN

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