Canon LBP-2000, Руководство по обслуживанию

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CHAPTER 2
2 - 14
(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.
N o t e : 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.