Thermal fixing apparatus

Details Thermal fixing apparatus Thermal fixing apparatus

1984-05-25

1986-12-09

Moses, R. L.

Heating

Advancing structure flexing, looping or coiling sheet, web...

Internally heated roll

355 3FU, 219216, G03G 1520

Patent

active

046278133

ABSTRACT:
A thermal fixing apparatus for use with a copying machine or electronic printer in which an operating temperature of the apparatus after energization is quickly reached. A pair of fixing rolls is provided, at least one of which in heated. The outer surface of the other is covered with an elastically deformable outer layer. The two rolls are pressed into abutment with one another to form a nip therebetween of the predetermined width. A plate-shaped heater element is disposed prior to the nip adjacent the path of conveyance of toner-image-bearing paper sheets to be fixed. The plane of the heater element is preferably parallel to the plane of the paper. The surface temperature of the heater element has a temperature higher at central portions than at widthwise ends thereof to provide uniform fixing conditions.

REFERENCES:
patent: 3861863 (1975-01-01), Kudsi
patent: 4075455 (1978-02-01), Kitamura et al.
patent: 4163892 (1979-08-01), Komatsu et al.
patent: 4223203 (1980-09-01), Elter
patent: 4474456 (1984-10-01), Kobayashi et al.

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