A.5 Multifeed Detection Conditions

There are three multifeed detection modes: document layer, document length, and both document layer and length. The following conditions must be satisfied in each of these detection modes. The type of document and document conditions can cause the multifeed detection rate to drop.

A.5.1 Detection by Layer

If [Ultrasonic] is selected in "6.9.17 Multifeed Detection (Layer and Length)" (page 399), muli- feeds are detected by layer.

In this case, set sheets of the same thickness in the ADF at any one time.

zDocument thickness: 0.065 to 0.15mm

zPunched holes are not allowed within 17.5mm (0.7in) either side of the center of paper.

zDo not glue on any other paper within 17.5mm (0.7in) either side of the center of paper.

A.5.2 Detection by Length

If [Length] is selected in "6.9.17 Multifeed Detection (Layer and Length)" (page 399), multifeeds are detected by length

In this case, set sheets of the same length in the ADF at any one time.

zDocument length deviation: 1% or less

zPunched holes are not allowed within 17.5mm (0.7in) either side of the center of paper.

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