Area not to be perforated, Conditions for multifeed detection, Contents index – Fujitsu Ricoh Fujitsu fi-7280 Color Duplex Document Scanner User Manual
Page 49: Appendix glossary introduction top
Chapter 2 How to Load Documents
49
Area Not to be Perforated
An error may occur when there are punched holes in the area
shaded in light blue in the following figure. Such documents
can be scanned by using the flatbed (fi-7260/fi-7280).
Conditions for Multifeed Detection
Multifeed is an error where two or more sheets are fed through
the ADF at once. It is also called a multifeed when a different
document length is detected.
Multifeed detection is performed by either checking the
overlapping of documents, length of the documents, or the
combination of both. The following conditions are required for
an accurate detection.
Detection by overlapping
z
Load documents of the same paper weight in the ADF paper chute
(feeder).
z
Paper weight: 27 to 413 g/m
2
(7.2 to 110 lb)
z
Do not punch holes within 35 mm (1.38 in.) over the center of the
document. See Fig.1.
z
Do not attach other documents within 35 mm (1.38 in.) over the
center of the document. See Fig.1.
Detection by length
z
Load documents of the same length in the ADF paper chute (feeder).
z
Variance in document lengths: 1% or less
z
Do not punch holes within 35 mm (1.38 in.) over the center of the
document. See Fig.1.
Detection by overlapping and length
z
Load documents of the same paper weight and length in the ADF
paper chute (feeder).
z
Paper weight: 27 to 413 g/m
2
(7.2 to 110 lb)
z
Variance in document lengths: 1% or less
z
Do not punch holes within 35 mm (1.38 in.) over the center of the
document. See Fig.1.
z
Do not attach other documents within 35 mm (1.38 in.) over the
center of the document. See Fig.1.
ATTENTION
The above condition applies when the document is set to the center of
the pick roller width.
HINT
If there are any holes in the 35 mm-wide central column, you can move
the document to the left or right to avoid an error.
( Unit: mm)
Top
Reference point
Front side
Feed
direction
Bottom
35
Center