Apparatus including a conductive wick for applying liquid releas

Details Apparatus including a conductive wick for applying liquid releas Apparatus including a conductive wick for applying liquid releas

1987-05-12

1988-06-14

Grimley, A. T.

Photocopying

Including fiber optics

118 60, 118260, 118268, 219216, 361212, 361221, 430 99, G03G 1520

Patent

active

047515481

ABSTRACT:
A heat and pressure fuser for fixing a toner image to a copy sheet in a xerographic copier has a heated fuser roll cooperating with a backup roll to form a nip through which the copy sheets are passed for fusing. In order to prevent toner offset the fuser roll is provided with a coating of silicone rubber or Viton (trademark) and the outer surface is supplied with a film of liquid release agent. The release agent is contained in a sump and fed to an applicator having a wick bearing against the fuser roll. Static buildup on the fuser roll is avoided because the wick is electrically conductive and is connected to earth potential via the copier frame providing a charge leakage path for the fuser roll. In a preferred form, the wick comprises a woven fabric in which the weft threads are electrically conductive, each such conductive thread comprising one or more stainless steel fibers entwined with a plurality of heat-resistive nylon, e.g. Nomex (trademark), fibers.

REFERENCES:
patent: 3288175 (1966-11-01), Valko
patent: 3745972 (1973-07-01), Thettu
patent: 3839135 (1974-10-01), Lowry et al.
patent: 3846151 (1974-11-01), Roteman et al.
patent: 3952696 (1976-04-01), Saupe
patent: 4083322 (1978-04-01), Beckman, Jr.
patent: 4182263 (1980-01-01), Naeser et al.
patent: 4309957 (1982-01-01), Swift
patent: 4536076 (1985-08-01), Bickerstaff et al.

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