Roll fuser apparatus and release agent metering system therefor

Details Roll fuser apparatus and release agent metering system therefor Roll fuser apparatus and release agent metering system therefor

1978-06-28

1980-07-29

Kendall, Ralph S.

Coating apparatus

With heat exchange, drying, or non-coating gas or vapor...

With solid heat exchange means contacting work

118117, 432 60, 432228, 430 99, G03C 1320

Patent

active

042145490

ABSTRACT:
A heat and pressure roll fusing apparatus for fixing toner images to copy substrates, the toner comprising a thermoplastic resin. The apparatus includes an internally heated, fuser roll cooperating with a backup or pressure roll to form a nip through which the copy substrates pass with the images contacting the heated roll. The heated fuser roll is characterized by an outer layer or surface which by way of example is fabricated from a silicon rubber or Viton material to which a low viscosity polymeric release fluid is applied. Release fluid is contained in a sump from which it is dispensed by means of a metering roll and a donor roll, the former of which contacts the release fluid in the sump and the latter of which contacts the surface of the heated fuser roll.

REFERENCES:
patent: 3878818 (1975-04-01), Thettu et al.
patent: 3880577 (1975-04-01), Tomono et al.
patent: 3929094 (1975-12-01), Thettu
patent: 3964431 (1976-06-01), Namiki
patent: 4079229 (1978-03-01), Takiguchi

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