Roll fuser apparatus and system therefor

Details Roll fuser apparatus and system therefor Roll fuser apparatus and system therefor

G - Physics

03

G

314/38.5

G03G 15/20 (2006.01)

Patent

CA 1132182

ROLL FUSER APPARATUS AND SYSTEM THEREFOR ABSTRACT A heat and pressure roll fusing apparatus for fixing toner images to copy substrates, the toner comprising thermoplastic resin. The apparatus includes a heated fuser roll cooperating with a backup or pressure roll to form a nip through which the copy substrates pass at relatively high (i.e. 12-20 in./sec speeds with the images contacting the heated roll. The heated fuser roll is characterized by a relatively thick (i.e. 10 mils or greater) outer layer or surface which by way of example is fabricated from a highly insulative material such as silicone rubber or Viton to which a low viscosity polymeric release fluid is applied. Elevating the temperature of the heated roll during a standby or warm-up is accomplished by an internally disposed heating element and the operating temperature thereof during the run mode of operation is effected by an external heater.

328066

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