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[5] OPERATIONAL DESCRIPTION
1. Paper feed section major parts
1
No.
Part name
1
Document length
sensor (L2)
2
Document length
sensor (L1)
3
Document length
sensor (W0)
4
Document width sensor
(W1, W2, W3)
5
Pickup roller
6
Paper feed roller
7
Paper entry sensor
(PAPER)
8
PS roller
9
PS follower roller
10
Transport roller
11
Transport follower roller
12
Paper exit follower roller
13
Paper exit roller
2. Brief descriptions of operations
1) Document set (Document set sensor ON)
2) Document size detection (The document width is detected
with document width sensors W1, W2, and W3, and the
document length is detected with document length sensors
L1 and L2.)
3) Copy start (Machine)
4) SPF motor ON
5) Pickup solenoid ON
6) Pickup roller rotation
7) Paper feed roller rotation
8) Paper entry sensor detects paper presence.
9) PS roller rotation
10) Copy operation (Machine)
11) Transport roller rotation
12) Paper exit roller rotation
13) Document exit
YES
14) Next document
NO
15) SPF motor OFF
2
3,4 5
6
7
8
12
11
10
13
9
Operation
Detects the document length on
the tray.
Detects the document length on
the tray.
Detects the presence of
document.
Detects the document width.
Picks up the document.
Feed and transport the
document.
Detects the document transport.
Makes synchronization between
the document lead edge and the
image lead edge.
Makes synchronization between
the document lead edge and the
image lead edge.
Transports the document.
Transports the document.
Discharges the document.
Discharges the document.
3. Document size detection
Document size detection by document set tray
When a document is set on the document set tray in the auto mode of
paper/copy magnification ratio selection, the document size is
detected to perform the auto selection function of paper and the copy
magnification ratio according to the detected document size.
When documents of different sizes are mixed and set on the tray, the
max. size is detected. The document width is detected by the docu-
ment width sensors (W1, W2, W3), and the document length is
detected by the document length sensors (L1, L2) to determine the
document size.
The document size judgment is made after a certain time from when
the document set sensor (W0) detects the document.
L2
Document size
and set direction
A5
B5
A5R
A4
AB
series
B5R
A4R
8.5" × 13"
B4
A3
8.5" × 5.5"
8.5" × 5.5"R
11" × 8.5"
Inch
11" × 8.5"R
series
8.5" × 13"
8.5" × 14"
11" × 17"
[Note] Sensor ON: F OFF: D
– 5 –
L1
W0
W1
W2
W3
Document width
Document
sensor
length sensor
W1
W2
W3
L1
F
D
D
D
F
F
D
D
D
D
D
D
F
F
F
D
D
D
D
F
F
D
D
F
F
D
D
F
F
D
D
F
F
F
F
F
F
D
D
D
D
D
D
D
F
F
F
D
F
D
D
F
F
D
D
F
F
D
D
F
F
F
F
F
L2
D
D
D
D
D
D
F
F
F
D
D
D
D
F
F
F
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