Abstract: A print cylinder having a first header, a second header and a hollow cylinder body is internally piped. The first header includes an air inlet and an air outlet. The air outlet is sealingly connected to a central conduit which is sealingly attached to a disk, the disk being sealed about its perimeter to the cylinder body. The second header includes an air inlet and at least one air outlet, the air outlet being connected to a perimeter groove defined about the outer surface of the second header. Apertures are defined within the print cylinder immediately above the perimeter groove whereby an air flow continuum is created from the air inlet of the first header, through the central conduit, through the second header inlet and outlet, through the perimeter groove and through the cylinder apertures. Secondary apertures are defined within the cylinder body, each connected in an air flow continuum to the central conduit by means of secondary conduits.

Abstract: A print cylinder having a first header, a second header and a hollow cylinder body is internally piped. The first header includes an air inlet and an air outlet. The air outlet is sealingly connected to a central conduit which is sealingly attached to a disk, the disk being sealed about its perimeter to the cylinder body. The second header includes an air inlet and at least one air outlet, the air outlet being connected to a perimeter groove defined about the outer surface of the second header. Apertures are defined within the print cylinder immediately above the perimeter groove whereby an air flow continuum is created from the air inlet of the first header, through the central conduit, through the second header inlet and outlet, through the perimeter groove and through the cylinder apertures. Secondary apertures are defined within the cylinder body, each connected in an air flow continuum to the central conduit by means of secondary conduits.

Abstract: An apparatus for supporting an air actuated plate cylinder to facilitate installation or removal of a print sleeve includes a support frame supporting the first end of the plate cylinder, a gantry mounted on the support frame, first and second carriages mounted for selective movement along the gantry and including first and second air cylinders which are operable to move their respective rams along a predetermined path of travel, and a support member engageable with the second end of the plate cylinder and which is further engageable by one of the rams made integral with one of the carriages, and wherein the print sleeve to be installed or removed is telescopingly received on the support member and wherein the respective rams are selectively moved into and out of respective supporting relationship relative to the second end of the plate cylinder thereby facilitating the installation of the print sleeve.