Fusing Unit Drive
Fusing/exit motor [A] > timing belt [B] > gear coupling [C] > fusing unit
Inserting the fusing unit engages the coupling [C].
The pressure roller [D] is driven by friction between the pressure roller and the hot roller [E].
The fusing unit exit rollers [F] are driven through some gears.
CPM Down Mode
CPM (Copies Per Minute) Down Control adjusts the copy speed automatically when printing OHP (trans-
parencies) or extremely thick paper.
Slowing down the paper as it goes through the fusing unit makes the paper spend more time in the fusing
unit. This compensates for the loss of temperature caused by the demand on the hot roller.
When feeding special paper such as tab paper or thick paper, the copy speed can be adjusted with
SP1901 (CPM Down Setting for Special Paper). A slower speed selection ensures better fusing. Adjusting
SP1901 does not affect fusing temperature control.
Fusing Temperature Control
This machine uses either on/off control or phase control to control the temperature of the hot roller. Before
shipping, the machine is set for on/off control.
Generally, phase control is used only if the customer has a problem with electrical noise or interference on
the power line. Phase control can be selected with SP1104-001 (Fusing Temperature Control).
6. Details
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