Konica Minolta 5430 DL 5440 DL 5450 - Manual (Page 145)

Fusing Section Main Unit Theory of Operation
2-108
II Comp
osition
/O
p
eration
16.3.6 Post-warm-up control
• After the warm-up cycle has been completed, the Fusing Pressure Roller and Fusing
Belt are turned to achieve a uniform temperature.
• If the Heating Roller and the Fusing Pressure Roller have reached their respective
required temperatures, the machine considers that the Fusing Unit rollers and belt have
reached the specified temperatures. It then terminates the post-warm-up control
sequence.
A. Control start timing
• At the end of the warm-up control (no post-warm-up control sequences are performed if
a print request is received)
B. Control termination timing
• A predetermined period of time elapses after the post-warm-up control has been started.
• The temperature of the Heating Roller reaches 170°C + correction value and that of the
Fusing Pressure Roller reaches 150°C or more.
• A Power Save mode signal is received.
C. Control operation timing
1.
The Fusing Pressure Roller and Fusing Belt are turned at the specified speed.
2. The “ripple prediction temperature adjustment” is started with the target temperature of
the Heating Roller Heater Lamp set at 170°C + correction value. At the same time, the
“ripple prediction temperature adjustment” is started with the target temperature of the
Fusing Pressure Roller Heater Lamp set at 150°C.
3. Rotation is stopped after the lapse of a predetermined period of time after the post-
warm-up control has been started and the control proceeds to “wait control.” Or, if the
temperatures of the Fusing Pressure Roller and Fusing Belt have reached the specified
levels, rotation is stopped and the control proceeds to “wait control.”
4. If a print request is received during the control, the control proceeds to “print control.”
5. If a malfunction or media misfeed occurs during control, the control proceeds to “heater
OFF control.”
16.3.7 Wait control
• Control is provided to ensure that the temperatures at different parts of the Fusing Unit
reach a constant level during the wait state.
A. Control start timing
• At the end of the post-warm-up control
• At the end of the post-print cycle control (print start control)
B. Control termination timing
• A print request is received.
• A malfunction or media misfeed occurs.
• A Power Save mode signal is received.
C. Control operation timing
1.
The “hysteresis temperature adjustment” is started with the target temperature of the
Heating Roller Heater Lamp set at 170°C + correction value. At the same time, the
“hysteresis temperature adjustment” is started with the target temperature of the Fus-
ing Pressure Roller Heater Lamp set at 150°C.
2. If a print request is received during the wait state, the control proceeds to “print control.”
3. If a malfunction or media misfeed occurs or a Power Save request is made during the
wait state, the control proceeds to “heater OFF control.”
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