Canon DR-4580U Instructions Manual page 22

Setting up the scanner
Number, mode and
default display
08 Back side contrast
0 8 . B . C o n t r a s t
L – – – – + – – – – H
09 Back side halftone
0 9 . B . H a l f t o n e
10 Noise reduction
1 0 . N o i s e R e d u c t .
+ – – – – – –
11 Black line removal
1 1 . B L K L i n e
R e m o v e
12 Scanning mode
1 2 . S c a n n i n g
13 Double feed detection
1 3 . D o u b l e
20
Sets the contrast for the back side of document pages.
L4
H o s t
Pressing
Sets the gradation for the back side of document pages.
Host
H o s t
Halftone dot 32
(Dynamic Th.)
"Dynamic Threshold" does not appear if expansion memory (DIMM) is
not installed. To use "Dynamic Threshold", contact your service
representative for installation of expansion memory (DIMM).
Sets the rate of noise reduction (speckling) in scanned document
image.
H o s t
Host
B4 4
W3 3
B1 1~B6
W1 1~W6
When enabled removes the black lines that appear at the top and
bottoms of scanned images.
H o s t
Host
Sets scanning for actual document size or reduced.
Host
M o d e
H o s t
Actual scans at 100% actual page size. Some data on page edges may
be lost.
Fit to Page shrinks image to fit scanned page.
Switches automatic double feed detection off and on.
Host
F e e d
H o s t
When set to Detect, the scanner buzzes an alert and the power lamp
flashes red if double feeding is detected. Even if set to OFF for Setting
the Buzzer, it will still buzz an alert.
When scanning important documents, confirm that the number of
scanned pages displayed on the LCD matches the number of actual
pages.
Double feed detection will not work if paper is less than 210 mm in length.
When documents of differing thicknesses are loaded, double feed
detection does not work.
Content
L3 L2 L1 Norm
Host
or with Host displayed, changes the display to Norm.
Binary Bayer dither 64
Halftone dot 64
None B1 1 B2 2
B5 5 B6 6 W1 1
W4 4 W5 5 W6 6
6 : Scanner reduces a black dot.
6 : Scanner reduces a White dot.
Disable Enable
Fit to Page Actual
Not detect Detect
H1 H2 H3 H4
Bayer dither 16
Error diffusion
B3 3
W2 2