Toner image fixing apparatus

Details Toner image fixing apparatus Toner image fixing apparatus

1987-05-07

1989-03-21

Beck, Shrive

Coating apparatus

With heat exchange, drying, or non-coating gas or vapor...

With solid heat exchange means contacting work

118101, 219216, 219469, 355 3FU, 355 14FU, 432 60, G03G 1520

Patent

active

048133728

ABSTRACT:
A thermal roller for fixing a powdered toner image onto an image receiving sheet is provided with a sub-surface resistive heat generating layer adjacent the outer surface of the roller. The thickness of the heat generating layer or the materials that constitute the layer are controlled so that the resistance per unit length of the thermal roller increases gradually in the axial direction from the center portion thereof toward and to both ends. Electrical energy passed through the heat generating layer generates a desired temperature distribution profile along the roller to provide appropriate fixing temperatures, without excessively increasing the temperature at both ends of the roller.

REFERENCES:
patent: 3437032 (1969-04-01), Manghirmalani et al.
patent: 4050886 (1977-09-01), Moser
patent: 4109135 (1978-08-01), Minden et al.
patent: 4266115 (1981-05-01), Dannatt
patent: 4297562 (1981-10-01), Kamogawa et al.
patent: 4301359 (1981-11-01), Ito et al.
patent: 4395109 (1983-07-01), Nakajima et al.
patent: 4628183 (1986-12-01), Satomura
patent: 4724305 (1988-02-01), Iimura et al.
Albert G. Guy, "Elements of Physical Metallurgy", 1959, pp. 256-257.

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