A.5 Multifeed Detection Conditions - Fujitsu ScanSnap N1800 Operator's Manual

A.5 Multifeed Detection Conditions

There are three multifeed detection modes: document layer, document length, and both
document layer and length.
To detect multifeeds with document layer, document length, or both document layer and
length, specify [Ultrasonic], [Length], or [Both], in
Length)" (page
The following conditions must be satisfied in each of these detection modes.
Detection by Layer
Set sheets of the same thickness in the ADF paper chute for a series of scans.
Paper weight: 52 to 127 g/m
Punched holes are not allowed within 25 mm (0.98 in.) either side of the center of
paper.(*)
Do not glue on any other paper within 25 mm (0.98 in.) either side of the center of
paper.(*)
(*): Refer to Figure 1.
Detection by Length
Set sheets of the same length in the ADF paper chute for a series of scans.
Document length deviation: 1% or less
Punched holes are not allowed within 25 mm (0.98 in.) either side of the center of
paper.(*)
(*): Refer to Figure 1.
Detection by both Layer and Length
Set sheets of the same thickness and length in the ADF paper chute for a series of
scans.
Document thickness: 52 to 127 g/m
mm)
Document length deviation: 1% or less
Punched holes are not allowed within 25 mm (0.98 in.) either side of the center of
paper.(*)
Do not glue on any other paper within 25 mm (0.98 in.) either side of the center of
paper.(*)
(*): Refer to Figure 1.
392).
"6.9.19 Multifeed Detection (Layer and
2
(14 to 34 lb) (45 to 110 kg/ream) (0.06 to 0.15 mm)
2
(45 to 110 kg for 1,000 sheets) (0.065 to 0.15
478