Printing – Printing members – Rolling contact
Patent
1997-09-29
1998-10-13
Hilten, John S.
Printing
Printing members
Rolling contact
101375, B41F 1316
Patent
active
058196579
ABSTRACT:
A cylindrical spacer sleeve is interposed between a printing sleeve, which carries printing matrices, and a printing cylinder. The spacer sleeve has an innermost core member that is expandable by interposition of air pressure between the inner surface of the core member and the outer surface of the printing cylinder. In an alternative embodiment, the core member is not expandable. The outer surface of the spacer sleeve torsionally rigidly supports by an interference fit, the printing sleeve. A rigid bridge layer is disposed between the outer surface and the core member. The spacer sleeve has a plurality of air channels through which pressurized air is supplied from within the bridge layer to the outer surface. In one embodiment, the bridge layer includes a pair of axially spaced apart spacer rings. Pressurized air flowing through the channels assists in expanding the diameter of the innermost surface of the printing sleeve for alternatively mounting the printing sleeve onto the spacer sleeve and dismounting the printing sleeve from the spacer sleeve.
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Colilla Daniel J.
Ermino Rossini, spa
Hilten John S.
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