Photocopying – Contact printing – Light boxes
Patent
1991-08-30
1993-07-20
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355212, 492 47, 492 58, 492 59, G03G 1500
Patent
active
052298132
ABSTRACT:
A backup roller assembly having a plurality of rollers for applying pressure to an inside surface of a photoreceptor web, and a process for making such backup rollers is disclosed wherein a thin walled tube is extruded from a metallic or polymeric material. After extrusion, the tubing is cut to a desired length and filled with a filler, preferably a urethane foam for providing support for the thin-walled tubing, for the adhesion of journals at each end of the tube and for grounding the photoreceptor web. After the journals are attached at each end of the tubing by the adhesion of the foam, the backup roller can be ground to a precise outer diameter. In a final step, the journals are machined to the proper specifications.
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Grimley A. T.
Ramirez Nestor R.
Xerox Corporation
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