Oki ML420 Maintenance Manual page 39

(1) Cut sheet and continuous sheet switching mechanism (See Figure 2-7.)
Three different paper paths can be selected and set by the change lever.
(a) TOP (for cut sheet)
When the cut sheet is used in the manual mode or fed by the CSF (option), set the
change lever at the position marked TOP.
[Operation]
The driving force of the platen gear (R) is transmitted to the idle gear by setting the
change lever to the TOP position. However, this causes the idle gear to be disen-
gaged from the change gear, leaving it free.
At this time, the pressure rollers (at the rear and the front) are pressed securely to
the platen to feed the cut sheet. At the same time, the switch lever positions between
the rear switch and bottom switch, to confirm to the control board that you are in the
cut sheet mode.
In the cut sheet mode, the control board automatically feeds the sheet up to the print
start position after pausing for the wait time stored in the menu.
(b) REAR (Continuous sheet from push tractor)
When the change lever is set to REAR position, the change gear is engaged with
the idle gear and the tractor gear to transmit the rotation of the platen to the push
tractor shaft, and the continuous sheet is fed from the push tractor.
At the same time, the switch lever turns on the rear switch, to confirm to the control
board that you are in the continuous sheet mode.
(c) BOTTOM (Continuous sheet from bottom feeder) (option)
When the change lever is set in the BOTTOM position, the rotation of the platen
is transmitted to the drive gear of the bottom tractor feed unit through the idle gear
to feed the sheet which has been set in the bottom tractor feed.
At the same time, the switch lever turns on the bottom switch, to confirm to the control
board that you are in the continuous sheet mode.
Correlation in Mechanism
Mechanism
Lever
Position
TOP
REAR
BOTTOM
42113901TH01 Rev.3
Rear Bottom
Switch Switch Gear
OFF OFF Rotate
ON OFF Rotate
OFF ON Rotate
Idle Change Tractor
Gear Gear
Stop Stop
Rotate Rotate
Rotate Stop
Oki Data CONFIDENTIAL
Sheet
Insertion
Manual/
automatic
CSF:
Operation SW
or instruction
Operation
•
SW
or
instruction
•
Operation
•
SW
or
instruction
•
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