NewFEIMAS
Refer to Revision Record on page 2.
T.Anzai
Nov. 20, 2008
K.Okada
Rev
04
03
PAGE
43
/
138
PFU LIMITED
P1PA03334-B30X/6
Refer to Revision Record on page 2.
T.Anzai
July 7, 2008
K.Okada
Refer to Revision Record on page 2.
K.Okada
K.Okada
DESCRIPTION
CHECK
DATE
T.Anzai
APPR.
K.Okada
K.Okada
Aug.19, 2005
DESIG
N
DESIG
.
CUST.
I.Fujioka
I.Fujioka
T.Anzai
CHECK
fi-5530C/fi-5530C2
IMAGE SCANNER
MAINTENANCE MANUAL
APPR.
TITLE
DRAW.
No.
Feb.23, 2007
05
Section 3-2-1
(Continued)
Error display
No.
Scanner
display
TWAIN display
Error detection algorithm and action to recover
2
U2
“Multi feed error”
Multi feed
Two methods are used to detect this error, either/both of which can be selected
by the driver setting. Both methods are set to OFF as default.
1)
Multi feed detection by paper length
Using the Sensor TOP, the scanner measures the length of the document
transported for the first time. The measured length is used as a standard length
to be compared with the length of subsequent documents.
The scanner detects a multi feed when the detected paper length is larger or
smaller than the standard value (one out of
±
10mm,
±
15mm or
±
20mm, which
is specified by the driver. If the subsequent document is shorter than the first
one, it means the multi feed occurred at the first document.
Immediately after a multi feed error is detected, the feeding operation stops.
2)
Multi feed detection by paper overlapping
US sensor detects the overlapping of the document ultrasonic technology.
The any punched holes are not allowed in the vertical center of 35 mm width
area as shown below.
Note: When the overlapping check is specified, the papers which contact
closely each other, such as glued paper or electro-statically charged
paper, can result in the miss-detection of multi feed.
How to recover:
Remove the document and close the ADF. When the error frequently occurs,
refer to
Section 3-3-13
.
L – paper length >
±
10,
±
15,
±
20
(selectable)
Overlapping detection area
C
ente
r l
ine
35 mm
(1.4 in.)
US sensor
(Emitter)
US sensor
(Detector)
L
Feeding
direction
Sensor TOP
