Konica Minolta bizhub PRO 1050 Service Manual page 559

12. ADJUSTMENT FOR POD
3. Reverse the paper set direction in the tray. Set
paper so that the curling direction of paper
becomes concave on the conveyance section.
When the curling is convex, the leading edge of
paper hits against the entrance guide plate and
this may be apt to cause a transfer jitter.
(4) Approx. 138 to 103 mm from the trailing
edge
1. Strengthen the nip pressure of the pre-transfer
roller. (See P.511)
Note
• If the nip pressure is strengthened it is pos-
sible that transfer jitter 40 mm from the
trailing edge may occur. In this instance
select whichever image is best. (before
pressure increase or after)
• If transfer jitter occurs at around 140 mm
from the trailing edge, it may be impossible
to determine if the jitter is caused by the
registration roller (145 mm) or by the fusing
unit (138 mm). In this instance cut 20 mm
off the trailing edge of an A3 sheet and
print a test pattern to the cut paper. If the
position of the jitter changes in relation to
the leading edge the cause can be deter-
mined to be the registration roller.
2.
Remove the 2 suction covers provided under
the conveyance belts on both sides of the con-
veyance section.
Note
• If the transfer suction ability is increased it
is possible that transfer jitter may occur
145 mm from the trailing edge. Select
whichever image is best. (before adjust-
ment or after)
3.
Reverse the paper set direction in the tray. Set
paper so that the curling direction of paper
become concave on the conveyance section.
When the curling is convex, the leading edge of
paper hits against the entrance guide plate and
this may be apt to cause a transfer jitter.
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Field Service Ver3.0 Nov.2006
(5) Approx. 40 mm from the trailing edge
1.
Remove 2 pressure springs of the pre-transfer
roller.
(See P.511)
(6) Random occurrence
1. Remove the 2 suction covers provided under
the conveyance belts on both sides of the con-
veyance section.
Note
• If the transfer jitter is due to the speed dif-
ference between the registration roller and
the conveyance belt, the transfer jitter
occurs more easily. Select whichever
image is best. (before adjustment or after)