Detect Double Feed; Feeding Speed; Single Color Dropout; Multiple Colors Dropout - Bell and Howell Tr?per Feature Manual

This function detects the feeding of more than one sheet at a time. Ultrasonic waves are aimed at the
document to detect double feed by the level at which the waves pass through the sheets. This function can
detect double feed even when sheets are superimposed exactly on top of each other, but it may not detect
properly with some paper thicknesses and when creasing and other factors are present. The default for
Detect Double Feed is ON.
If a double feed is detected, you can opt to be notified. The default setting for this function is Stop.
Note
•
When important documents are to be scanned, check the number of document sheets against the
number of scanned image sheets.
• When scanning a document containing paper in different sizes, double feed can be detected when
this function is selected.
There are two settings for the Feeding Speed; Slow and Normal. It is recommended that you select Slow
when scanning thin paper, badly creased paper, fragile paper, etc. In this mode, documents are fed at
about one-half of the speed as in the Normal mode. Scanning documents in Slow mode does not affect
image quality.
Note
•
At a resolution above 300 dpi, the paper is fed at the same speed as in the Normal mode, even if
the Slow mode has been specified.
• This function cannot be used with flatbed scanning.
For information on the Single Color Dropout property, refer to the Trūper Operator Manual.
For information on the Multiple Color Dropout property, refer to the Trūper Operator Manual.

2.3.2 Detect Double Feed

2.3.3 Feeding Speed

2.3.4 Single Color Dropout

2.3.5 Multiple Colors Dropout

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