Konica Minolta Magicolor 2490 MF, Руководство по обслуживанию

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17. Fusing section Theory of operation ver. 1.0 July. 2006
64
magicolor 2490MF
Composition/Operation
A. Warm-up
• Control is provided until the heating roller temperature reaches 178
°
C.
• This control is performed when the power switch is turned ON, a malfunction or paper
misfeed is reset, the energy saver mode is canceled, or the door is opened and closed.
B. In standby
• The fusing temperature in the standby state is prevented from being dropped.
• The control temperature in the standby state after the warm-up cycle which was started
with the heating roller temperature 60
°
C or less is changed to that of the ordinary
standby after the lapse of a predetermined period of time.
*a: The fusing temperature in the standby state is changed if the standby state lasts for 20
min. or longer.
Machine interior temperature is less than 20
°
C: 170
°
C
Machine interior temperature is 20
°
C or more: 165
°
C
C. During print cycle
• To ensure good fusing performance, the set temperature of each roller is varied accord-
ing to the paper type and environment.
(1) Monochrome printing
• Temperature control is changed back to that listed under “ordinary environment” in the
table when the temperature/humidity sensor detects 20
°
C or more.
*a: The temperature is controlled at 159
°
C if the machine interior temperature is 20
°
C or
more and humidity is 40% or higher.
Standby state Temperature (
°
C)
Ordinary standby
180
*a
In standby state after the warm-up cycle started with the heating roller tem-
perature below 60
°
C
185
Media type
Ordinary
environment
(
°
C)
Temperature/humidity
sensor less than 20 °C
(
°
C)
Plain paper (plain paper, letterhead) 169 174
Plain paper (plain paper, letterhead) 257 mm or less 169 174
Thick stock (thick stock, postcards, labels) 169
OHP 169
Envelopes
194
*a
Glossy stock 169