Oki ML490 Maintenance Manual page 47

(7) Paper clamp mechanism (See Figure 2-13.)
When setting the change lever to the BOTTOM , TOP or REAR position, the operation
of the front release gear arm changes according to the position of the release cam. And
at the same time, the position of the cam installed to the front release gear shaft changes,
and the open and close of the pressure roller.
42114101 Rev.1
Position of Open or close of
change lever front pressure roller
BOTTOM
TOP
REAR
Open or close of
rear pressure roller
OPEN OPEN
CLOSE CLOSE
OPEN OPEN
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