Patent ID: 9421757
Filing Date: 2016-08-23
CPC Classification: B41F,B41P

Claim Text:
1. A cleaning apparatus for cleaning a printing press, comprising: a moveable frame for traversing a path parallel to the axis of an engraved roller or a blanket roller; means for positioning the moveable frame proximate one of the rollers for performing one cleaning operation on the one roller and means for placing the moveable frame proximate the other roller for performing another cleaning operation on the other roller; at least one unwind spindle rotatably attached to the frame, the unwind spindle having an axis of rotation substantially parallel to the pair or rollers, the unwind spindle holding a rolled web of dry absorbent cleaning material for absorbing wet ink and for turning to dispense new dry cleaning material; at least one rewind spindle for turning to roll up the web of cleaning material, the rewind spindle being rotatably attached to the frame and having an axis of rotation substantially parallel to the pair or rollers; a spindle motor attached to the frame and coupled to one or both spindles to turn the spindles and thereby dispense new dry cleaning material and rewind used cleaning material; a multiposition motor carried by the frame, the motor including a first rod having a retracted position, a first extended position and second extended position; a backing plate secured to an exterior end of the first piston rod and movable with said first piston rod; and a cleaning pad disposed in front of the backing plate, engaging the web of cleaning material, and pressing the web against the blanket roller at a first pressure when the piston is in the first extended position to dry wipe the blanket roller while the frame traverses the blanket roller and for engaging the web of cleaning material and pressing the web against the engraved roller at a second pressure when the piston is in the second extended position to wet wipe the engraved roller while the frame traverses the engraved roller.