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US 6,484,632 B2Granted
Rubber cylinder sleeve, especially for web-fed rotary offset printing machines
AssigneeMAN Roland Druckmaschinen AG
InventorsEduard Hoffmann, Peter Knauer
Life of this patent
Estimating the term…
Abstract
A rubber cylinder sleeve for web-fed rotary offset printing machines has a covering layer which is a finite layer having a joint location, the joint location being filled with a compressible material.
Claims11
A rubber cylinder sleeve for fitting to the transfer cylinder of a printing press, said sleeve comprising
- an inner carrier sleeve which is expandable by means of air,
- at least one compressible layer over said carrier sleeve, and
- a covering layer over said compressible layer, said covering layer being a finite layer having a joint location, said joint location being filled with a compressible material.
A printing unit comprising
- a plate cylinder having a clamping channel, and
- a transfer cylinder arranged for rolling contact with said plate cylinder, said plate cylinder having a rubber cylinder sleeve fitted thereto, said rubber cylinder sleeve comprising an inner carrier sleeve which is expandable by means of air, at least one compressible layer over said carrier sleeve, and a covering layer over said compressible layer, said covering layer being a finite layer having a joint location, said joint location being filled with a compressible material, said transfer cylinder being registered with said plate cylinder so that said joint location lies opposite said clamping channel during rolling.
A printing unit comprising
- a plate cylinder having a printing plate clamped thereon, said printing plate having a print-free area, and
- a transfer cylinder arranged for rolling contact with said plate cylinder, said plate cylinder having a rubber cylinder sleeve fitted thereto, said rubber cylinder sleeve comprising an inner carrier sleeve which is expandable by means of air, at least one compressible layer over said carrier sleeve, and a covering layer over said compressible layer, said covering layer being a finite layer having a joint location, said joint location being filled with a compressible material, said transfer cylinder being registered with said plate cylinder so that said joint location lies opposite said print-free area during rolling.
Dependencies are inferred from the claim text.