Printing – Printing members – Rolling contact
Patent
1988-08-09
1990-04-03
Eickholt, Eugene H.
Printing
Printing members
Rolling contact
1013821, 1014011, 291132, B41F 1310
Patent
active
049130510
ABSTRACT:
A roll which can be used in conjunction with the printing cylinder in a rotary printing press to define a nip for the running web of paper or other material which is to be provided with printed matter has a shaft which is surrounded by a deformable hollow cylindrical shell. The ends of the shell are mounted on antifriction bearings which surround the shaft, and the intermediate portions of the shell can be deformed, to conform to the outlines of adjacent portions of the printing cylinder, by inflatable plenum chambers which are installed in sleeves surrounding the shaft so that each plenum chamber bears against the shaft and urges the respective sleeve radially of the shell. Additional antifriction bearings are installed between the internal surface of the shell and the ends of the sleeves which flank a larger-diameter central portion of the shaft. The shaft has a metallic tube with a set of longitudinally extending internal reinforcing ribs. The shell can be made of one or more layers of plastic material which is reinforced by fibers, such as carbon filaments.
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Componenti Grafici s.r.l.
Eickholt Eugene H.
Kontler Peter K.
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