Ink and dampener form roll interruption for cleaning purposes

Claim 1

In a lithographic printing press having a rotatable plate cylinder, means for applying ink to a plate on said plate cylinder comprising a first plurality of rolls forming an ink distribution system, means for applying a dampening solution to said plate comprising a second plurality of rolls forming a dampening solution distribution system, said first plurality of rolls including at least one ink form roll having a direct inktransferring cooperative engagement with said plate during printing and shiftable therefrom to a thrown-off position, means for shifting said direct ink form roll from said ink-transferring cooperative engagement with said plate to said thrown-off position and from said thrown-off position into direct inktransferring engagement with the plate, said second plurality of rolls including a dampener form roll and a dampener fluidtransmitting roll, said dampener form roll having a direct cooperative fluid-transmitting engagEment with said plate and with said dampener fluid-transmitting roll during printing, said dampener form roll being spaced from said first plurality of rolls when said dampener form roll is in direct cooperative engagement with said plate and said dampener fluid-transmitting roll during printing, and means for shifting said dampener form roll from direct cooperative engagement with the plate and said dampener fluid-transmitting roll into direct cooperative fluidtransmitting engagement with said ink form roll when said ink form roll is in said thrown-off position.