Canon imageFORMULA DR-G2140 User Manual page 25

Detection Functions
● Auto Color Detection
Automatically detects whether scanned documents are color,
grayscale, or black and white.
● Paper Size Detection
Detects the document page size before scanning.
Fixed-size scan
● Skew Detection
The scanner stops feeding when a skewed document is detected as
it touches the edges of the feeder inlet.
● Staple Detection
The scanner stops feeding when it detects the presence of stapled
documents. "Staple Detection" (See p. 68)
● Dust Detection
Detects dust in the scanning unit and performs error processing as
needed. "Dust Detection" (See p. 69)
● Ultrasonic Double Feed Detection
The scanner stops feeding when the ultrasonic sensor detects that
two or more document pages are feeding at the same time.
Feed" (See p. 67)
* A non-detection area can be specified to avoid double-feed
detection in areas such as those containing adhesive labels.
Auto-size-detection
scan
"Double
● Double feed detection by length
The scanner stops feeding when a double feed is detected by
comparing document page lengths.
* Based on the length of the first document page, the scanner
detects a double feed when fed a different-length page.
● Prescan
At the start of scanning, this function prescans the first page and
pauses so that you can adjust brightness and contrast before
resuming scanning.
● Verify Scan
While scanning, the scanned page count is verified against a pre-
specified count or that obtained from Count-Only Mode.
Scan" (See p. 57)
● Text Orientation Detection
The text orientation on each page is detected, and the scanned
image is rotated in 90-degree increments as necessary for
normalization.
Orientation of
document
Image Processing
● Prevent Bleed Through/Remove Background
Prevents the background or original image on the reverse side of
thin originals from appearing in scanned images.
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"Double Feed" (See p. 67)
"Verify
Image rotated by text
orientation detection