14 June, 2002
PRINTER
6-33
D
e
tailed
D
escr
iptions
When the fusing temperature reaches 170
°
C, the 1st fusing temperature is used as
the target temperature for fusing temperature control.
When t1 has elapsed after reaching the start temperature for printing, the 2nd
fusing temperature becomes the target temperature. Next, after t2 has elapsed, the
3rd fusing temperature becomes the target temperature. The 1st, 2nd, and 3rd
fusing temperatures, and the amount of time to maintain the 1st and 2nd fusing
temperatures, are determined by the paper size.
SIZE
DLT
LT LEF
LG
LT SEF A4 LEF
A4 SEF
A3
T2 (Control Temp.)
195
°
C 185
°
C 185
°
C 185
°
C 180
°
C 185
°
C 195
°
C
T3 (Control Temp.)
190
°
C 185
°
C 180
°
C 185
°
C 180
°
C 175
°
C 190
°
C
T4 (Control Temp.)
180
°
C 170
°
C 170
°
C 170
°
C 170
°
C 160
°
C 170
°
C
t1
*1
30 s
80 s
40 s
80 s
80 s
40 s
80 s
t2
*2
130 s
80 s
40 s
80 s
80 s
40 s
80 s
Cooling Fan Control
The cooling fan has three operation modes controlled by the temperature of the
fusing unit. The threshold temperature for control of the fan differs depending on
whether the temperature is rising or falling.
When the temperature is rising:
•
At 110
°
C the fan switches on and starts rotating at low speed. (At low speed the
fan continues to rotate non-stop for at least 5 minutes.)
•
At 170
°
C the fan starts rotating at high speed. (The fan always runs at high
speed while the machine is operating.)
When the temperature is falling:
•
At 160
°
C the fan, rotating at high speed, starts rotating at low speed.
•
At 100
°
C the fan, rotating at low speed, switches off.