Patent ID: 6024017
Filing Date: 2000-02-15
Classification: B41F

Abstract:
A printing apparatus having ink feeders for selectively feeding inks to a plurality of image areas on a plate or plates mounted on a plate cylinder, comprising:a plate cylinder for supporting, peripherally thereof, plate means having a plurality of image areas;a plurality of cams rotatable synchronously with said plate cylinder, said cams being arranged in positions laterally of said plate cylinder corresponding to said image areas;a plurality of ink rollers arranged circumferentially of said plate cylinder for contacting a surface of said plate means to feed ink to said image areas;a plurality of ink roller support arms for rotatably supporting said ink rollers, respectively; andan ink roller support arm moving mechanism including cam followers for contacting said cams to move said ink roller support arms successively, with rotation of said cams, between an ink feeding position in which said ink rollers contact said surface of said plate means and a retracted position in which said ink rollers are separated from said surface of said plate means.