13.4.5Temperature detection section

To maintain the stable temperature of the fuser belt, the thermistor detects the temperature and con- trols ON/OFF of the IH coil. Output from the thermistors is used to detect the abnormality.

(1)Relation between the thermistor output voltage and surface temperature of the fuser belt

Output voltages of thermistors [V]	Surface temperatures of fuser belt [oC]
Approx. 0.5	40

Approx. 2.0	100

Approx. 3.5	160

Approx. 4.0	200

(2)Control of the surface temperature of the fuser belt

°C

200

Temperature of fuser roller

Warmng-up

Ready (200°C)

Durng prntng (200°C)

IH col ON OFF ON OFF ON OFF ON

OFF ON OFF ON

Fig. 13-404

(3)Temperature control for the both ends of the fuser roller

During the continuous printing, the temperature of the both ends of the fuser belt (areas where the paper does not pass on) generally tend to be higher than that of the other areas (areas where the paper passes on). The temperature of the ends are detected by the front edge thermistor, and when it reaches 280°C, the heater is automatically turned OFF regardless of the temperature of the area where the paper passes on.

e-STUDIO350/352/353/450/452/453	13 - © 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved
FUSER UNIT / PAPER EXIT SECTION

350, 353, 453, 452 specifications

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