Canon scanner CanoScan N656U User Manual

							51 chapter 4
What is on the
Screen?
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Glossary
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Index
The Halftone Sheet
The Halftone sheet is displayed only when Black and White or Text
Enhanced(OCR) has been selected for the Color Mode on the Advanced
Mode Main window.
Note
•If you selected Text Enhanced(OCR), you cannot make
any changes on this sheet.
•You can set only Threshold in this sheet.
Halftoning
Threshold
Threshold determines whether portions of an original are scanned as
black or white. Drag the slider left to make the image lighter or drag
it right to make the image darker. Or you can also enter a value ( 0 -
255) directly into the entry box to the right of the slider. 
						

							52 chapter 4
What is on the
Screen?
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Glossary
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Index
The Scanner Sheet
When you click on the Scanner tab (N650U/N656U or N1220U) the
Scanner sheet opens. 
						

							53 chapter 4
What is on the
Screen?
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Index
Paper Size
Specifies from the drop-down list the paper size of the image to be
scanned.
•Business Card
•Statement
•B5
•Executive
•Letter
•A4
•Full Platen
Note
Changing the Paper Size clears the Preview area and
clears all settings you have performed with the Toolbar
or the buttons on the Tone sheet buttons.
Descreen
Click this check box if you want ScanGear CS-U to conduct moiré
reduction to improve the overall image quality.  Moiré are dot patterns
that interfere with processing images for professional use and are usually
caused by poor dithering resulting from scanning images from
newspapers, books, magazines, etc.
Unsharp Mask
Click this check box to switch the Unsharp Mask feature on and off.
Sharpens an image, like a photograph that is slightly out of focus, by
emphasizing the contrast to make outlines more clear.
Note
•When the image would not be improved with
Descreen on, try to switch the Unsharp Mask
function off.
•The effects by Descreen and Unsharp Mask will not
be affected in the Preview area. 
						

							54 chapter 4
What is on the
Screen?
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Index
Test Scanner
Click this button to open the Scanner Diagnostics dialog box. Click the
Start button in the Scanner Diagnostics dialog box to test your Scanner.
After the test is complete, a message is displayed here to inform you of
the results. If a problem is reported after the test, use your scanner
instructions to troubleshoot the problem. During the test, do not open
the document cover of the scanner.
Calibration
Click this button to start calibration. Calibration is the adjustment of
color processing for input and output devices so the colors in the
scanned image match the colors you see on the computer screen and in
the printed image. During calibration, do not open the document cover
of the scanner. 
						

							55
Top  Page
Glossary
Contents
Index chapter
5
Scanning an Original
Preparing for the Scanning Job
Quick Start
Previewing and Scanning an Original 
						

							56 chapter 5
Scanning an
Original
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Glossary
Contents
Index
Preparing for the Scanning Job
These are some points you should check before you start scanning: 
•If you have not yet installed the parent software application you
intend to use with the scanner and ScanGear CS-U, install the
application.
•Before you start scanning, make sure the scanner is connected
correctly.
•Always position the original squarely on the scanner platen with
the image side down.
•ScanGear CS-U lets you correct many undesirable features in
scanned images, but you will save time and effort by starting with
the best possible original. If you are scanning a photograph, for
example, make sure the original is in the sharpest possible focus.
•If you are scanning text, make sure the printed text is sharp and
clean. 
						

							57 chapter 5
Scanning an
Original
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Glossary
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Index
Quick Start
Follow the procedure below if you want to get started scanning right
away.
The referenced page numbers provide more details about the steps
below. If you need more information about a procedure, go to that page
number.
1.Install ScanGear CS-U. (
p.12)
2.Start ScanGear CS-U.  (
p.59, 64)
3.Set the original.
4.Select the desired Simple or Advanced mode and set the desired
settings (resolution, etc.) (
p.31, 36)
Simple ModeAdvanced Mode 
						

							58 chapter 5
Scanning an
Original
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Index
5.Preview the original. (
p.62, 66)
6.Adjust image as required. (
p.63, 67)
7.Set the scanning area. (
p.63, 67)
8.Scan the document. (
p.63, 67)
9.The image is processed. (For details, 
 the application manual) 
						

							59 chapter 5
Scanning an
Original
Top  Page
Glossary
Contents
Index
Previewing and Scanning an
Original
You can preview and scan an image in either the Simple Mode or the
Advanced Mode. This section describes both procedures.
Scanning in the Simple Mode
This is a brief overview of the general procedure for previewing and
scanning an original in the Simple Mode.
1.Place the original on the scanner.
Note
For details about positioning the original on the
scanner, see your scanner users manual.
2.Start the software application you are going to use. (for example
PhotoStudio 2000)
3.Pull down the File menu and select the Select Source command or
its equivalent.
In the Select Source dialog box select the name of the scanner
(CanoScan N650U/N656U or CanoScan N1220U) from the list and
click the OK button. 
						

							60 chapter 5
Scanning an
Original
Top  Page
Glossary
Contents
Index4.
Start ScanGear CS-U as a TWAIN driver. (TWAIN 
p.97)
Refer to your software application users manual for details about
acquiring an image with a scanner. For example, click the File menu and
select Acquire or Scan.
5.The ScanGear CS-U main window opens.
If the Advanced Mode main window appears, click the Simple Mode
button.
Note
If you see an image in the Preview Area this means one
of the preview settings has been switched on with the
Preferences sheet.  Otherwise, the Preview Area is
empty.