Fujitsu fi-4220C Operator's Manual page 172

I I I I
Detection by Document Thickness and Length
Sheets of the same thickness and length shall be set in the
ADF at a time.
•
Document length: 0.065 to 0.15mm
•
Document length deviation: 1% or less
•
Printed area: 12% or less
•
No black printed areas are allowed at the center area
(26 x 10mm) at the leading edge of the document.
•
Punched holes are not allowed within 35mm of the vertical
center line of the document.
•
The deviation in the amount of the light transmitted through
background areas must not be less than 10%.
The type of document and document conditions
HINT
sometimes cause the double-feed detection
rate to drop.
8.5 Double-feed Detection Conditions
8
143