Device for heat-fixing a toner image

Details Device for heat-fixing a toner image Device for heat-fixing a toner image

1982-12-20

1984-10-02

Moses, Richard L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3FU, 219216, 219388, G03G 1520

Patent

active

044744560

ABSTRACT:
A heat-fixing device includes a heat plate along which a transfer medium bearing thereon a toner image is advanced during which the toner image becomes fixed to the transfer medium by fusing, the heat plate including a plurality of heating sections arranged along the direction of advancement of said transfer medium each of the heating sections being provided with at least one electrical heater. The device also includes a control circuit for controlling the operation of the heaters such that, under a non-steady-condition, only selected ones of the heaters are set in operation thereby only the corresponding heating sections are positively heated; whereas, under a steady-state condition, all of the heaters are operated at the same time thereby maintaining all of the heating sections at a predetermined temperature.

REFERENCES:
patent: 4059394 (1977-11-01), Ariyama et al.
patent: 4315136 (1982-02-01), Block et al.
patent: 4434353 (1984-02-01), Marsh et al.

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