4.5 PAPER TRANSPORT MECHANISM
The transport belt [A] is driven by an independent motor called the belt drive
motor [B] (a dc stepper motor). The belt drive motor starts rotating soon after
the copier sends an original feed-in signal.
Inside the transport belt are four pressure roller shafts, which achieve the
proper amount of pressure between the belt and the original. The pressure
roller shaft [C] closest to the left original scale is made of rubber for the
stronger pressure that is required when in the thick original mode (this is the
mode used for normal paper). The other rollers are sponge rollers.
Since the copier’s original alignment position is at the left rear corner (not in
the center), the originals fed from the DF must also be at this position. But if
the original was to be fed along the rear scale, unnecessary original skew,
jam or wrinkling may occur.
To prevent such problems, the original transfer position is set to 3.5 mm
away from the rear scale as shown. The correction for this 3.5 mm gap is
compensated for by the position of the lens unit. (Also see "Horizontal Lens
Positioning" in the Optics section of the manual for the copier main body.)
[A]
[C]
[B]
Left Scale
Rear Scale
Original
3.5 mm
AUTO REVERSE
DOCUMENT
FEEDER A548
STM 3-9 A156/A160/A162
To Next Page
Loading...
