Ultrasonic Sensor - Fujitsu iScanner fi-6010N Operator's Manual

Portrait orientation
A document with its long side vertical and its short side horizontal.
See also "Landscape orientation".
Postcard size
A standard paper size. (100 × 148mm / approximately 3.94 × 5.83inches)
Portrait orientation is used for this scanner.
Resolution
A measure of the fineness of details or grain of images. The customary metric of resolution
is dpi (dots per inch). For any given image, the higher the resolution, the more dots or pixels
that can be used, and the greater the resulting fineness of detail that can be expressed.
Simplex scan mode
A scan mode where only one side of each document sheet is scanned. See also "Duplex scan
mode".

Ultrasonic sensor

A type of sensor that uses ultrasonic sound waves, in this case to detect document multifeeds
by recognizing differences in how the sound penetrates single versus multiple sheets.
fi-6010N Network Scanner Operator's Guide
F
539