Heat fixing roll for copying machine, method of producing...

Details Heat fixing roll for copying machine, method of producing... Heat fixing roll for copying machine, method of producing...

H - Electricity

05

B

314/38.5

H05B 3/00 (2006.01) G03G 15/20 (2006.01)

Patent

CA 2017365

ABSTRACT OF THE DISCLOSURE A heat fixing roll for a copying machine comprises an insulating layer formed on the surface of a hollow tube, a heating resistor layer formed on the surface of the insulating layer by uniformly thermal spray coating a resistor material, a screw-like heating resistor formed by forming a helical groove having a depth reaching the surface of the insulating layer by using a laser irradiation head connected to an electric resistance compensator, and an antisticking layer formed on the surface of the resistor and the groove by coating. The present invention also provides a method of producing the heat fixing roll and an electronic copying machine provided with the roll.

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