Fujitsu fi-4860C Operator's Manual page 268

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 and the conditions of document and the conditions
sometimes cause the double-feed detection rate to drop.
HINT
●AP-3