• The down level % is a value for the case where a typical paper (Normal paper: A4 or smaller
paper sizes) passes through the SEF at normal speed. There may be some differences
depending on paper size/paper thickness.
CPM down level
Mode Level
Normal CPM 100%
CPM down 1 80%
CPM down 2 50%
CPM down 3 30%
CPM down determination using a temperature sensor
The temperature sensor is checked at given intervals, and if the detection temperature is above a
threshold value, the CPM is decreased by 1 level.
Since the points at which temperature tends to increase depend on the paper size, the sensor used
is changed depending on the paper size.
Paper width (length) Check sensor
A3/DLT/B4 Pressure roller thermistor (edge)
LT/A4 Thermopile (edge)
B5/A5/B6/A6 Pressure roller thermistor (center)
CPM down determination using paper passage time
Depending on the paper size, it may not be possible to determine the points on the fusing sleeve
belt which tend to rise in temperature by a sensor.
Therefore, time conditions are also used to determine CPM down, and if continuous paper passage
time is above a threshold value, CPM is decreased by 1 level.
(When CPM down is performed by time conditions, CPM does not increase thereafter.)
Curl Correction Mechanism
This machine provides a curl reduction mechanism on the fusing exit.
7. Detailed Descriptions
1194
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