Patent ID: 8850975

Claim:
A variable cutoff printing unit comprising: a plate cylinder; a plate cylinder support removably supporting the plate cylinder; a blanket cylinder; a blanket cylinder support removably supporting the blanket cylinder, the blanket cylinder support including a bottom face and a top face that define a blanket cylinder support slot in the blanket cylinder support, the blanket cylinder support movable between an on printing position and an off printing position; an arm; a sliding element coupled to the arm and the arm coupled to the blanket cylinder support for moving the blanket cylinder support toward and away from the plate cylinder support, the arm extending into the blanket cylinder support slot such that, in the on printing position, the arm contacts the bottom face of the blanket support slot and does not contact the top face of the blanket cylinder support slot, and in the off printing position, the arm contacts the top face of the blanket support slot and does not contact the bottom face of the blanket cylinder support slot; and a stopping device for stopping movement of the sliding element to limit the movement of the blanket cylinder toward and away from the plate cylinder to a defined range.