8.5 Double feed detection conditions

To obtain a correct monitoring and preventing miss detections of doublefeeds, the documents have to meet the following conditions.

Check overlapping

Paper weight : 41 g/m2 - 203 g/m2 (10.9 lb to 53.9 lb)

Punched holes are not allowed within 35 mm (1.4 in.) of the vertical centerline of the document.

Other paper shall not be glued within 35 mm (1.4 in.) of the vertical centerline of the document.

Check length

Document length deviation : 1 % or less

Punched holes are not allowed within 35 mm (1.4 in.) of the vertical centerline of the document.

Check overlapping and length

Paper weight : 41 g/m2 - 203 g/m2 (10.9 lb to 53.9 lb)

Document length deviation : 1 % or less

Punched holes are not allowed within 35 mm (1.4 in.) of the vertical centerline of the document.

Other paper shall not be glued within 35 mm (1.4 in.) of the vertical centerline of the document.

HINT

When the overlapping check is specified, the papers which contact closely each other, such as glued paper or electro-statically charged paper, can result in the miss-detection of double-feed.

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