Chapter 2 How to Load Documents
37
Area Not to Be Perforated
An error may occur when there are punched holes in the area
shaded in light blue in the figure below.
Use the flatbed to scan such documents.
Fig. 1
Conditions for Multifeed Detection
Multifeed is an error where two or more sheets are fed through
the ADF at once. Multifeed can be detected by enabling the
multifeed detection in the scanner driver.
The following conditions are required for an accurate multifeed
detection.
Paper weight: 52 to 127 g/m
2
(14.0 to 34.3 lb)
Do not punch holes within 80 mm (3.15 in.) over the center of the
document. See
Do not attach other documents within 80 mm (3.15 in.) over the
center of the document. See
.
Altitude: 0 to 2,000 m
When a document that weighs 100 g/m
2
(26.8 lb) or more is scanned
at a high altitude (higher than 2,000 m), it may be detected as a
multifeed.
ATTENTION
The above conditions apply when you align the center of a document
with the center of the roller part of the pick roller unit.
Center
Top
Reference point
Feed
direction
Front side
(Unit: mm)
Bottom
80
ATTENTION
The above conditions apply when you align the center of a document
with the center of the roller part of the pick roller unit.
Scanning a thick document always causes the wrong multifeed
detection. So, disable the multifeed detection in the scanner driver
when scanning such documents.
HINT
Accuracy of multifeed detection may drop with some documents.
Multifeed cannot be detected for the top 30 mm of a document.
