Heat roll fixing device for electrophotographic copying machine

Details Heat roll fixing device for electrophotographic copying machine Heat roll fixing device for electrophotographic copying machine

1977-05-31

1978-09-12

Albritton, C. L.

Electric heating

Heating devices

Combined with diverse-type art device

219388, 219469, 432 60, H05B 100

Patent

active

041140214

ABSTRACT:
A heated roll fixing device for electrophotographic copying machines, wherein said device is provided with a first roll 4 which is coated on the surface with a heat-resistant releasing agent 2 , said first roll being adapted to contact toner images 6 on a supporting body 7 . A second roll 5 cooperating with said first roll 4 for pressure-heat-fixing the toner images to said supporting body 7 . The fixing device is characterized in that either said first roll 4 or second roll 5 but at least said first roll 4 is provided with an inner heating means 3, and an outer heating means 13 with small heat capacity is provided in a manner to surround said first roll 4 as illustrated in FIG. 4 of the drawings.

REFERENCES:
patent: 3356831 (1967-12-01), Andrus et al.
patent: 3811821 (1974-05-01), Ariyama et al.
patent: 4001546 (1977-01-01), Johnson, Jr. et al.

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