Fuser apparatus with release agent delivery system

Details Fuser apparatus with release agent delivery system Fuser apparatus with release agent delivery system

1989-04-07

1991-09-03

Braun, Fred L.

Photocopying

Contact printing

Light boxes

355300, G03G 1520, G03G 2100

Patent

active

050458906

ABSTRACT:
Fuser apparatus for heat fusing toner images to a print substrate has a fuser roll and a pressure roll forming a fusing nip therebetween, a system to deliver liquid release agent to the fuser roll including a movable web having a first side and a second side supported between a web supply roll and a web take-up roll, a housing supporting the supply roll and take-up roll such that one of the supply and take-up rolls is on one side of the fuser roll and the other is on the other side of the fuser roll and the first side of the movable web is in contact with the fuser roll along a path parallel to its longitudinal axis. The movable web is impregnated with a liquid release agent and the movable web, supply roll and take-up roll are reversibly mounted in the housing to deliver liquid release agent to the fuser roll initally from the first side of the movable web followed by reversing the location of the supply roll and take-up roll in the support housing so that the second side of the impregnated web is in contact with the fuser roll to deliver release agent. The movable web is urged into delivery engagement with the fuser roll by an open celled foam pinch roll impregnated with liquid release agent.

REFERENCES:
patent: 3526457 (1970-09-01), Dimond et al.
patent: 3672764 (1972-06-01), Hartwig et al.
patent: 3740864 (1973-06-01), Ito et al.
patent: 3941558 (1976-03-01), Takiguchi
patent: 4056706 (1977-11-01), Strella
patent: 4393804 (1983-07-01), Nygard et al.
patent: 4498757 (1985-02-01), Lance et al.
patent: 4557588 (1985-12-01), Tomosada
patent: 4716435 (1987-12-01), Wilson
patent: 4939552 (1990-07-01), Nakanishi
patent: 4945381 (1990-07-01), Yamagata et al.

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