164
v Drum Drive Section
chap.4
Item
Advances
the stop position
Sets back
the stop position
Master
set/removal
position edge
Open/close lever
Open/close arm
+
-
0.5 mm
+
-
(2)
Adjusting the Master Set/Removal Position
¡For removal of operation.
1. Master set position
¡The correct position for stopping of the drum
(position for master removal) is when the
center axis of the master clump open/close arm
and the center axis of the master clump open/
close lever are aligned in a straight line. Adjust
so that the offset of the alignment of these two
center axes is ±0.5mm
(gauge this value visually).
Adjustment procedure
1) Access HELP mode H-09, the drum position
check mode.
2) Press the PRINT key several times, to move
the drum and stop it in the position where the
master set/removal sensor senses that the shade
plate's master removal position edge.
3) Adjust the offset in the alignment of the center
axis of the master clump open/close arm and the
center axis of the master clump open/close lever.
NOTE :
4) Loosen the screws indicated, turn the master
set/removal sensor shade plate a little in the
direction of the arrows, and provisionally tighten
the screws.
5) Repeat step 2), and check the center axis
alignment offset.
6) If necessary, repeat steps 2) through 5) until the
center axis alignment offset is within ±1mm.
7) Properly tighten the screws, and check 6) again.
2. Master removal position
¡Perform set of master removal position at the
same time as that of master set position. Adjust
both positions to an accuracy of ± 0.5mm.
Standard value
Offset in alignment of center
axes of master clump
open/close arm and master
clump open/close lever
± 0.5 mm
\See page 77
HELP mode H-09 \ see p.231
Master set position
Open/clos
e arm
Open/close lever
Master removal
position
440128
440126
440129
+
-
0.5mm
Master set/removal position sensor
440125
Screw
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