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Main Unit Theory of Operation Fusing Section
2-109
II Composition/Operation
16.3.8 Print control
• To ensure a good fixing level and light transmission performance of the OHP film, the
fusing speed, Fusing Pressure Roller temperature, and Fusing Belt temperature are
controlled.
A. Control start timing
• A print request is received.
B. Control termination timing
• A malfunction or media misfeed occurs.
C. Control operation timing
1. The Fusing Pressure Roller and Fusing Belt are turned at the specified speed.
2. The “single reference 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
“single reference temperature adjustment” is started with the target temperature of the
Fusing Pressure Roller Heater Lamp set at 150°C.
3. If the temperature of the Heating Roller reaches the target value, the control of the
Heating Roller Heater Lamp proceeds to the “hysteresis temperature adjustment.” If the
temperature of the Fusing Pressure Roller reaches the target value, the control of the
Fusing Pressure Roller Heater Lamp proceeds to the “ripple prediction temperature
adjustment.”
4. When the leading edge of the first sheet of media moves past the Synchronizing Roller,
the Fusing Pressure Roller and Fusing Belt are turned at the specified speed corre-
sponding to the type of the media.
5. If there is another sheet of media to be printed when the trailing edge of the preceding
sheet of media moves past the Fusing Pressure Roller/Fusing Belt, the Heating Roller
Heater Lamp temperature, Fusing Pressure Roller Heater Lamp temperature, and the
fusing speed are changed to the settings that correspond to that particular piece of
media.
6. After the trailing edge of the last sheet of media moves past the Exit Roller, the control
proceeds to “post-print cycle control.”
7. If a malfunction or media misfeed occurs during a print cycle, the control proceeds to
“heater OFF control.”
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