Register correction for sheet offset printing machine form plates - has mutually adjustable printing work register systems, and auxiliary measuring device for distances from register mark

摘要

The machine has several forme cylinders, each supporting a forme plate, while its printing works has register systems. The forme plate has motifs, register marks and stamped holes for alignment pins. The alignment system is allocated to a forme a plate clamp in the forme cylinder groove. The register systems of the printing works are mutually adjustable. Prior to a first print, a measuring device scans the distances from the register from the register mark, or motif detail to the alignment system. The measured distances are compared with preset register data and the differences are equalised by appropriate adjustment. ADVANTAGE - Register fault correction without any waste paper.