Hollow fuser roll with variable taper

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

1979-04-09

1981-03-03

Dixon, William R.

Presses

Concurrent pressing and conveying

Roll type

29117, 29122, 100 93RP, 219216, 428 36, B30B 300, B02C 1108, B60B 900, B21B 702

Patent

active

042533929

ABSTRACT:
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.

REFERENCES:
patent: 3883293 (1975-05-01), McCarroll
patent: 3884623 (1975-05-01), Slack
patent: 3999038 (1976-12-01), Sikes, Jr. et al.
patent: 4042804 (1977-08-01), Moser
Fathergill et al., "IBM Technical Disclosure Bulletin", vol. 16, #3, Aug. 1973.

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