2WA/2NJ/2RK
3-109
Tri-folding
1. The paper in the folding unit is conveyed to the center-folding position by drive of the BF adjusting motor
1/2 as well as the center-folding operation.
2. After the paper side registration, the BF blade (a) pushes up the paper and have it pinched between the
BF right roller (b) and BF left roller (c).
3. The BF feed-shift solenoid (d) activates the BF feed-shift guide (e) it switches the paper conveying path
for the paper from the BF right/left roller to convey it to the relief section (f).
Figure 3-101
4. When the paper stops at the relief section, the paper loop generated at the space is pinched between the
BF right roller (a) and upper BF roller (b). Then, the paper is folded inside.
Figure 3-102
a
b
c
f
d
e
b
a
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