Temperature controller with shape memory alloy in a fixing devic

Details Temperature controller with shape memory alloy in a fixing devic Temperature controller with shape memory alloy in a fixing devic

1983-11-10

1987-08-18

Grimley, A. T.

Photocopying

Including fiber optics

355 14FU, G03G 2100

Patent

active

046873155

ABSTRACT:
An electrophotographic copying machine comprises a device for controlling the temperature of a heating roller which presses a copy paper carrying a toner image thereon together with a fixing roller. The device comprises a switch and an actuator. The actuator comprises a shape memory alloy spring, an ordinary spring, a washer, and a shaft. The shaft is pressed in accordance with the movement of the washer. The washer moves according to the force balance between the shape memory alloy spring and the ordinary spring as the temperature of the heating roller varies.

REFERENCES:
patent: 3465122 (1964-09-01), Kolless
patent: 3469077 (1964-09-01), Petersen et al.
patent: 3594674 (1971-07-01), Wiltson
patent: 3881085 (1975-04-01), Traister
patent: 4385826 (1983-05-01), Itoh

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