Apparatus for lithography or intaglio printing

摘要

The embodiment of a lithography or intaglio printing apparatus described herein include a plate cylinder, an impression cylinder adapted to be periodically pressed against the plate cylinder for rotation therewith at the same speed as that of said plate cylinder, and inking rollers in contact with the surface of a plate. The length of a printing plate mounted on the plate cylinder is less than a half of the peripheral length of the plate cylinder and is also less than the peripheral distance between the contact points of inking rollers with the surface of the printing plate and of the objects to be printed with the surface of the printing plate. The impression cylinder is moved intermittently toward said printing plate to urge sheet material into contact therewith and the periods during which the inking rollers and the sheet material are maintained in contact with the printing plate may be changed independently.