Hollow fuser roll with variable taper

Details Hollow fuser roll with variable taper Hollow fuser roll with variable taper

G - Physics

03

G

314/38.5

G03G 15/20 (2006.01) B30B 3/00 (2006.01) B65H 27/00 (2006.01)

Patent

CA 1119243

HOLLOW FUSER ROLL WITH VARIABLE TAPER Abstract of the Disclosure An electrophotographic copier machine with a roll fuser where one of the mating rolls is comprised of a thin outer shell which takes a variable taper so that a concave shape is produced under high humidity conditions and a relatively straight roller is produced under low humidity conditions. Means for changing the support at the roll ends is provided to produce the variable taper. End plugs can be moved axially inward at high humidity to provide support for the end portions of the normally concave roll and can be moved axially outwardly under low humidity such that no support is provided until the roll ends are flattened under the pressure of a mating roll. B0978031

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