Canon 3624B002 User Manual - Page 15

Detection Functions, Image Processing, Double-Feed Detection by Document Length

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Detection Functions ● Auto Image Type Detection The scanner automatically detects whether documents are in black and white or color. ● Auto Paper Size Detection The document page size is detected before scanning. Fixed-Size Scanning Auto-Size Detection Scanning ● Skew Detection The scanner stops feeding when a skewed document is detected as it touches the edge of the feeder inlet. (See "Skew Detection" on p. 4-6.) ● Staple Detection The scanner stops feeding when it detects the presence of stapled documents. (See "Staple Detection" on p. 4-6.) ● 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. (See "Double-Feed Detection" on p. 4-5.) * A non-detection zone can be specified to avoid doublefeed detection in areas such as those containing adhesive labels. ● Double-Feed Detection by Document Length The scanner stops feeding when a double feed is detected by comparing document lengths. (See "Double-Feed Detection" on p. 4-5.) * Using the length of the first document page as a reference, the scanner detects a double feed when a page of a different length is fed. Chapter 1 Before You Start Using the Scanner ● Prescan At the start of scanning, this function prescans the first page of a document and pauses so that you can use the first image to adjust the brightness and contrast before resuming scanning. ● Verify Scan While scanning, the count of document pages scanned is verified against a pre-specified count or the count obtained from Count-Only Mode. (See "Verify Scan" on p. 4-4.) ● 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. Feeding Direction The text orientation is detected and the image is rotated 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. ● Image Rotation The scanner can rotate scanned images in 90° increments, or detect the text orientation and rotate the image in 90° increments to correct its orientation. 1-7

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1-7
Chapter 1
Before You Start Using the Scanner
Detection Functions
●
Auto Image Type Detection
The scanner automatically detects whether documents
are in black and white or color.
●
Auto Paper Size Detection
The document page size is detected before scanning.
●
Skew Detection
The scanner stops feeding when a skewed document is
detected as it touches the edge of the feeder inlet.
(See
“Skew Detection” on p. 4-6.)
●
Staple Detection
The scanner stops feeding when it detects the presence
of stapled documents.
(See “Staple Detection” on
p. 4-6.)
●
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.
(See “Double-Feed Detection” on
p. 4-5.)
*
A non-detection zone can be specified to avoid double-
feed detection in areas such as those containing adhesive
labels.
●
Double-Feed Detection by Document Length
The scanner stops feeding when a double feed is
detected by comparing document lengths.
(See
“Double-Feed Detection” on p. 4-5.)
*
Using the length of the first document page as a reference,
the scanner detects a double feed when a page of a
different length is fed.
●
Prescan
At the start of scanning, this function prescans the first
page of a document and pauses so that you can use the
first image to adjust the brightness and contrast before
resuming scanning.
●
Verify Scan
While scanning, the count of document pages scanned
is verified against a pre-specified count or the count
obtained from Count-Only Mode.
(See “Verify Scan”
on p. 4-4.)
●
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.
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.
●
Image Rotation
The scanner can rotate scanned images in 90°
increments, or detect the text orientation and rotate the
image in 90° increments to correct its orientation.
Fixed-Size Scanning
Auto-Size Detection
Scanning
Feeding Direction
The text orientation is
detected and the image is
rotated