Patent ID: 6176181
Filing Date: 2001-01-23
Classification: B41F

Abstract:
A printing press comprising:a frame,a central impression cylinder having an axis and being rotatable mounted on the frame for rotation about its axis, the central impression cylinder having an outer surface for contacting a web to be printed,a first roll support assembly movably mounted on the frame for movement toward and away from the central impression cylinder,a first roll having an axis and being rotatably mounted on the first roll support assembly for rotation about its axis, the axis of the first roll extending parallel to the axis of the central impression cylinder, the first roll being engageable with a web on the central impression cylinder,a second roll support assembly movably mounted on the frame for movement toward and away from the first roll,a second roll having an axis and being rotatably mounted on the second roll support assembly for rotation about its axis, the axis of the second roll extending parallel to the axis of the first roll, the second roll being engageable with the first roll,a first rotatable screw extending in a first direction from the first roll support assembly to the frame for moving the first roll support assembly toward and away from the central impression cylinder, the first screw having an axis which substantially intersects the axes of the first and second rolls,a second rotatable screw extending in a second direction which is opposite to said first direction from the second roll support assembly to the frame for moving the second roll support assembly toward and away from the first roll, the second screw having an axis which substantially intersects the axes of the first and second rolls and which is aligned with the axis of the first screw, andupper and lower rails mounted on the frame, the axes of the first and second rolls extending perpendicularly to the rails and being positioned between the rails, the first and second roll support assemblies being movably mounted the rails, the first and second screws being positioned between the rails.