Canon LBP-2000 Manuel de service télécharger pdf (Page 53)

CHAPTER 2

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(2) Controlling to the target temperature

To ensure good fixing as soon as the power switch is turned on, a target temperature is set in

relation to the fixing temperature at power-on and the state of the Printer after power-on.

• If the fixing temperature is less than 80°C when the power switch is turned on,

When the /PRNT signal arrives in each mode, the target temperature is set higher than the control

temperature. Printing is started when the target temperature is reached, and the target tempera-

ture is lowered in steps over time while continuous printing takes place, thereby using a control

temperature specific to each mode.

If the /PRNT signal is absent, temperature control will be as in normal mode regardless of the

selected mode.

• If the fixing temperature is 80°C or higher when the power switch is turned on,

When the /PRNT signal arrives in each mode, the control temperature is used as the target tem-

perature. Printing is started when the target temperature is reached, and the target temperature

is lowered in steps over time while continuous printing takes place, thereby using the control

temperature specific to each mode.

If the /PRNT signal is absent, temperature control will be as in normal mode regardless of the

selected mode.

c . Controlling in sleep mode (power saving mode)

The fixing heater (H101) remains OFF while the Printer is in sleep state. The target temperature at

the end of sleep state is determined in relation to the fixing temperature and the state of the

Printer, as in the case of temperature control at time of power-on.

Note: 1. Sleep mode (user menu) is set to 15 min at time of shipment from the factory.

2. Recovery control in response to the opening/closing of the front cover is the same as in

sleep mode.

d. Down sequence

In continuous printing, the readings taken by the sub thermistor of the areas not in contact with

paper can indicate overheating. To prevent overheating, the Printer increases the distance be-

tween sheets under the following condition (II-C-4-a. ‘Thermistor (detecting overheating)’):

• Down sequence is started if the reading of the sub thermistor is 210°C or higher.

• Down sequence is ended at the end of continuous printing.

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Canon LBP-2000 Manuel de service Page 53