Sharp AR-PN4 (serv.man2) Service Manual ▷ View online
2-13
CHAPTER 2 FINISHER UNIT BASIC OPERATION
c.
Stapling
The finisher stacks copies arriving from its host machine on the stapling tray. Then, it staples
and delivers the copies to the appropriate tray.
Tray
Copies
Staple
Staple
Swing guide
Delivery roller
Stapling
tray
tray
Stopper
Feed roller 1
Figure 2-207
Front diagonal stapling
Rear diagonal stapling
2-point stapling
Paper width/2
Rear 1-point stapling
Figure 2-208
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CHAPTER 2 FINISHER UNIT BASIC OPERATION
2.
Saddle Stitch Delivery (Saddle Finisher)
A copy arriving in the finisher from the host machine is routed to the saddle stitch by the paper
deflecting plate. The saddle stitch executes stitching and saddling operations on the copy and then
delivers it to the saddle stitch tray.
delivers it to the saddle stitch tray.
For discussions of stacks in the saddle stitch, see Chapter 3.
To saddle stitch
Figure 2-209
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CHAPTER 2 FINISHER UNIT BASIC OPERATION
B.
Type of Delivery Paths
The finisher has three different paper paths for delivery, each selected to suit paper size and
delivery mode.
1.
Straight Path
When stacking copies shown in Table 2-201, the copies pass under the buffer roller.
Copy size
The paper length is less than 182mm, or the paper width is less than
182mm, or the paper length is 251mm or more.
182mm, or the paper length is 251mm or more.
Typical copy examples
A3, A3-wide, B4, A4-R, B5-R, A5-R, LD, LG, LT-R, ST-R, Postcard, thick paper
Table 2-201
Delivery roller
Buffer roller
Figure 2-210
2.
Buffer Paper Path 1
When stacking copies shown in Table 2-202, the copies pass over the buffer roller, increasing
the distance between copies.
Copy size
The paper length is 182mm or more, and the paper width is 182mm or
more, and the paper length is 250mm or less.
more, and the paper length is 250mm or less.
Typical copy examples
A4, B5, LT (excluding thick paper)
Table 2-202
Buffer roller
Feed roller 2
Delivery roller
Figure 2-211
F15/F16
F15/F16
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CHAPTER 2 FINISHER UNIT BASIC OPERATION
3.
Buffer Paper Path 2
This is the paper path when copy sizes shown in Table 2-203 are stacked. A maximum of three
copies (three originals or more in the staple mode) are wrapped round the buffer roller, during
which job offset and stapling are performed on the stapling tray.
which job offset and stapling are performed on the stapling tray.
Copy size
Length 182 to 232mm, and width 182 to 297mm
Typical copy examples
A4, B5, LT, (excluding transparencies and thick stock)
Table 2-203
The following shows paper delivery operation in the case of three originals in the staple mode.
1) The first copy is moved in the direction of the buffer roller.
Buffer roller
First copy
Figure 2-212
2) The first copy wraps around the buffer roller and, at the same time, the second copy arrives
from the host machine.
First copy
Second copy
Figure 2-213
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