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TRANSFER BELT UNIT
24 February, 1999
[B]
[A]
[D]
[C]
A259D420.WMF
(3) Contact/release timing
The entrance seal [A] contacts the belt before the cleaning blade [B]. This prevents
toner from falling onto the paper. The inlet seal contact/release ever [C] controls
the contact and release timing of these components.
The lubricant brush [D] makes contact and releases at the same time as the blade.
(4) Dirty leading edge prevention
In 1C mode, the blade always contacts the transfer belt, so toner may build up on
the edge of the blade.
The belt cleaning mechanism performs two contact/release operations at the end
of a 1C-copy job to remove the toner accumulated at the edge of the blade. If toner
builds up on the blade, it will fall onto the belt when the blade contacts the transfer
belt. As a result of the timing of the mechanism, this toner appears at the leading
edge of the copy.
2-82
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