Canon scanner CanoScan LiDE 220 User Manual

							•The point clicked with  (White-point Dropper) will be the brightest point. You can also enter a
value (10 to 255).•
Click  (Dropper) for  Gray Balance  and click the area you want to adjust the color in the preview
image.
The clicked point will be set as the achromatic color reference, and the rest of the image is adjusted
accordingly. For instance, if snow in a photo appears bluish, click the bluish part to adjust the whole image and reproduce natural colors.
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							Adjusting Tone CurveYou can adjust the brightness of an image by selecting the type of graph (tone curve) showing the balance
of tone input and output, via 
 (Tone Curve Settings) in ScanGear (scanner driver)'s  Advanced Mode
tab.
Note
•
Click  Defaults  to reset all adjustments in the current window.
Channel Each dot of an image is a mixture of Red, Green, and Blue in various proportions (gradation). These
colors can be adjusted individually as a "channel."
Master Adjust the Red, Green, and Blue combined.
Red Adjust the Red channel.
Green Adjust the Green channel.
Blue Adjust the Blue channel.
Note
•
Only  Grayscale  will be displayed in  Channel when Color Mode  is Grayscale .
Reading Tone Curves With ScanGear, scanning images via a scanner is the input, and displaying to a monitor is the output.
"Tone Curve" shows the balance of tone input and output for each  Channel.
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							Adjusting Tone Curve
In  Select Tone Curve , select a tone curve from  No correction, Overexposure , Underexposure , High
contrast , Reverse the negative/positive image , and Edit custom curve .
No correction (No adjustment)
Overexposure (Convex curve)
The midtone data of the input side is stretched toward the highlight of the output side, resulting in a bright-
toned image when viewed on a monitor.
Underexposure (Concave curve)
The midtone data of the input side is stretched toward the shadow of the output side, resulting in a dark-
toned image when viewed on a monitor.
High contrast (S curve)
The highlight and shadow of the input side are enhanced, resulting in a high-contrast image.
Reverse the negative/positive image (Downward-sloping line)
The input and output sides are reversed, resulting in a negative-positive inverted image.
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							Edit custom curve
You can drag specific points on the Tone Curve to freely adjust the brightness of the corresponding areas.
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							Setting ThresholdYou can sharpen text in a document or reduce show-through in newspapers by adjusting the threshold level
via 
 (Threshold) in ScanGear (scanner driver)'s  Advanced Mode tab.
Note
•
This function is available when  Color Mode is Black and White .
•
Click Defaults  to reset all adjustments in the current window.
Adjusting Threshold The brightness of color and grayscale images is expressed in a value between 0 and 255. However, in
creating black and white images, all colors are mapped to either black (0) or white (255). "Threshold" is
the borderline value that determines a color as black or white.
Move 
 (Slider) to the right to increase the threshold value and thus increase the black areas. Move the
slider to the left to decrease the value and thus increase the white areas. You can also enter a value (0 to
255).
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							ScanGear (Scanner Driver) Screens
Basic Mode Tab
Advanced Mode Tab
Input Settings
Output Settings
Image Settings
Color Adjustment Buttons
Preferences Dialog Box
Scanner Tab
Preview Tab
Scan Tab
Color Settings  Tab
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							Basic Mode TabThis mode allows you to scan easily by following the on-screen steps.This section describes the settings and functions available on the  Basic Mode tab.
(1) Settings and Operation Buttons
(2) Toolbar
(3) Preview Area
Note
•
The displayed items vary by document type and view.
(1) Settings and Operation Buttons Select Source Photo (Color) Scan color photos.
Magazine (Color) Scan color magazines.
Document (Color) Scan documents in color.
Document (Grayscale) Scan documents in black and white.
Note
•
When you select a document type, the unsharp mask function will be active. The imageadjustment function which adjusts images based on the document type will also be active.
•
If you select  Magazine (Color) , the descreen function will be active.
Display Preview Image PreviewPerforms a trial scan.
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							Note
•
When using the machine for the first time, scanner calibration starts automatically. Wait a
while until the preview image appears.
Destination Select what you want to do with the scanned image.
Print Select this to print the scanned image on a printer.
Image display Select this to view the scanned image on a monitor.
OCR Select this to use the scanned image with OCR software.
"OCR software" is software that converts text scanned as an image into text data that can be edited in word processors and other programs.
Output Size Select an output size.
Output size options vary by the item selected in  Destination.
Flexible Allows you to freely adjust the cropping frames (scan areas).
In thumbnail view:
Drag the mouse over a thumbnail to display a cropping frame. When a cropping frame is
displayed, the portion within the cropping frame will be scanned. When no cropping frame is
displayed, each frame is scanned individually.
In whole image view:
When no cropping frame is displayed, the entire Preview area will be scanned. When a cropping
frame is displayed, the portion within the cropping frame will be scanned.
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							Paper Size (L, A4, etc.)Select an output paper size. The portion within the cropping frame will be scanned at the size ofthe selected paper size. You can drag the cropping frame to enlarge/reduce it while maintaining
the aspect ratio.
Monitor Size (1024 x 768 pixels, etc.) Select an output size in pixels. A cropping frame of the selected monitor size will be displayed
and the portion within the cropping frame will be scanned. You can drag the cropping frame to
enlarge/reduce it while maintaining the aspect ratio.
Add/Delete... Opens the  Add/Delete the Output Size  dialog box, in which you can specify custom output
sizes. You can select this option when  Destination is Print  or Image display .
In the Add/Delete the Output Size  dialog box, you can specify multiple output sizes and save
them at one time. Saved items will be registered to the  Output Size list and can be selected,
along with the predefined items.
Adding:
Enter  Output Size Name , Width , and Height , then click  Add. For  Unit, you can select  inches or
mm  when  Destination  is Print  but you can only select  pixels when  Destination  is Image
display . The name of the added size appears in  Output Size List. Click Save to save the items
listed in  Output Size List .
Deleting:
Select the output size you want to delete in  Output Size List, then click Delete. Click Save to
save the items listed in  Output Size List.
Important
•
You cannot delete predefined output sizes such as  A4 and  1024 x 768 pixels .
Note
•
Save up to 10 items.
•
An error message appears when you enter a value outside the setting range. Enter a value
within the setting range.
Note
•
For details on whether or how the cropping frame is initially displayed on a preview image, refer to  Cropping Frame on Previewed Images  in "
Preview Tab" (Preferences  dialog box).
 Invert aspect ratio
Available when  Output Size is set to anything but  Flexible.
Click this button to rotate the cropping frame. Click again to return it to the original orientation.
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							Adjust cropping framesYou can adjust the scan area within the Preview area.
If an area is not specified, the document will be scanned at the document size (Auto Crop). If an area
is specified, only the portion in the cropping frame will be scanned.
Adjusting Cropping Frames (ScanGear)
Image corrections Allows you to apply corrections to images.
Important
•
Apply Auto Document Fix  and Correct fading  are available when  Recommended is selected
on the  Color Settings  tab of the Preferences  dialog box.
Note
•
Available functions vary by the document type selected in  Select Source.
Apply Auto Document Fix Sharpens text in a document or magazine for better readability.
Important
•
Scanning may take longer than usual when this checkbox is selected.
•
The color tone may change from the source image due to corrections. In that case, deselect
the checkbox and scan.
•
Correction may not be applied properly if the scan area is too small.
Correct fading Corrects and scans photos that have faded with time or have a colorcast.
Reduce gutter shadow Corrects shadows that appear between pages when scanning open booklets.
Important
•
For precautions on using this function, refer to "Gutter Shadow Correction ."
Color Pattern... Allows you to adjust the image's overall color. You can correct colors that have faded due to
colorcast, etc. and reproduce natural colors while previewing color changes.
Adjusting Colors Using a Color Pattern
Important
•
This setting is not available when you select  Color Matching on the Color Settings  tab of
the  Preferences  dialog box.
Perform Scan Scan Starts scanning.
Note
•
When scanning starts, the progress will be displayed. Click  Cancel to cancel the scan.
Preferences... Opens the 
Preferences dialog box  in which you can make scan/preview settings.
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