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Fusing Section Main Unit Theory of Operation
2-110
II Composition/Operation
16.3.9 Post-print control
• To prevent the fusing temperature from rising after the print cycle has been run, a step-
wise control is provided using an intermediate temperature between the print tempera-
ture and the wait temperature.
A. Control start timing
• There is no new print request received when the trailing edge of the last sheet of media
has moved past the Exit Roller.
B. Control termination timing
• A predetermined period of time elapses after the post-print cycle control has been
started.
• A print request is received.
• A door is opened, or an error or malfunction occurs.
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 160°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 140°C.
3. The Fusing Pressure Roller and Fusing Belt are stopped after the lapse of a predeter-
mined period of time after the post-print cycle control has been started.
4. The control proceeds to “wait control” after the lapse of another predetermined period
of time after the post-print cycle control has been started.
5. The control proceeds to “print control” if a print request is received during the post-print
cycle control.
6. The control proceeds to “heater OFF control” if a malfunction or media misfeed occurs
during the post-print cycle control.
16.3.10 Heater OFF control
• Heater control is suspended when a malfunction or media misfeed occurs or a Power
Save mode signal is received.
A. Control start timing
• A door is opened or an error or malfunction occurs.
• A Power Save mode signal is received.
B. Control termination timing
• All of the following events are reset: an open door, an error or malfunction that has
occurred, a Power Save mode signal that has been received.
C. Control operation details
1. A request for heater forced turning OFF control is made for heater control.
2. A request is made for stopping rotation of the Fusing Pressure Roller and Fusing Belt.
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