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PTM 2-6 B070/B071
2.1.6 ORIGINAL TRANSPORT
The transport belt [A] is driven by the transport belt motor [B]. The transport belt motor
starts when the copier sends an original feed-in signal.
The pressure rollers inside the transport belt maintain the correct pressure between
belt and original. The pressure roller [C] closest to the left original scale is made of
rubber for the stronger pressure needed for thick originals. The other rollers are
sponge rollers.
Normally, originals are manually placed at the left rear corner, so an original [D] fed
from the ADF must also be at this position. But if the original touches the rear scale [E]
as it feeds, 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 3.5 mm gap is compensated for by changing the starting
position of the main scan for when the image is exposed on the drum.
B070D923.WMF
B070D924.WMF
[C]
[E]
[B]
[A]
3.5 mm
[D]