Brother ADS-4300N Online User's Manual page 36

Home > Paper Handling
Multifeed Detection
Multifeed occurs when two or more sheets are fed through the ADF at the same time, or when different
document lengths are detected.
Multifeed detection checks for overlapping documents, the length of documents, or both. The following conditions
must be met to avoid triggering multifeed detection:
• ADS-4300N/ADS-4700W
- All pages in the document loaded in the ADF must be the same weight.
Paper weight must be between 40 g/㎡ and 200 g/㎡.
- The 80 mm area in the centre of the document must be free of perforations or holes, and must have no
other documents attached to it.
- The document must be placed in the centre of the Pick Up Roller.
- All pages in the document must be wider than 80 mm.
• ADS-4900W
- All pages in the document loaded in the ADF must be the same weight.
Paper weight must be between 35 g/㎡ and 413 g/㎡.
- The 45 mm area in the centre of the document must be free of perforations or holes, and must have no
other documents attached to it.
- The document must be placed in the centre of the Pick Up Roller.
• Scanning thick documents such as plastic cards may incorrectly result in multifeed errors. If this
happens, disable multifeed detection.
• A multifeed cannot be detected when the machine is set to
• If the document paper are too thin or the width of the documents is too narrow, the sensor may not be
able to detect a multifeed.
Related Information
• Unacceptable Documents
> Document Specifications > Unacceptable Documents
(Manual Single Mode).
> Multifeed Detection
31