Wait Control; Print Control - Konica Minolta magicolor 4690MF Service Manual

21. Fusing section
C. Control start decision
• Either of the following two control start decisions is made according to the temperature
detected by the temperature/humidity sensor (TEM/HUMS). The fusing temperature dur-
ing the print cycle varies depending on the type of start control, whether low temperature
start control or ordinary start control.
• If the information provided by the temperature/humidity sensor is less than a predeter-
mined value
• If the information provided by the temperature/humidity sensor is equal to, or more than,
the predetermined value
• If the information provided by the temperature/humidity sensor is the predetermined
value or more, the ordinary start control is provided.
21.3.4

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 warm-up control
• At the end of the post-print cycle control (print start control)
B. Control termination timing
• The front cover is opened and closed.
• A malfunction or media misfeed occurs.
21.3.5

Print control

• To ensure a good fixing level and light transmission performance of the OHP transparen-
cies, the fusing speed and fusing roller temperature are controlled.
A. Control start timing
• A print request is received.
B. Control termination timing
• A malfunction or media misfeed occurs.
C. Print control temperatures
• The fusing roller temperature is set according to the type of media, main body interior
temperature (as measured by the temperature/humidity sensor), and warm-up start deci-
sion.
• For types of media other than plain paper, the fusing speed is controlled at the 1/2
speed.
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Theory of operation Ver. 1.0 May 2008