FUJITSU IMAGE SCANNER FI-486PRRE - Manual (Page 265)

● AP-2
APPENDIX 2 DOUBLE-FEED
DETECTION CONDITIONS
There are three double-feed detection modes: document thickness, document length, and both
document thickness and length. The following conditions must be satisfied in each of these
detection modes.
Detection by Document Thickness
Sheets of the same thickness shall be set in the ADF at a time.
- Document thickness: 0.065 to 0.15mm
- 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%.
Detection by Document Length
Sheets of the same length shall be set in the ADF at a time.
- 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 enter line of the
document.
- The deviation in the amount of the light transmitted through background areas
must not be less than 10%.