Canon PC300 Instruction Manual - Page 83

Contrast, Back side Brightness/contrast, Front side Back side color drop-out

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Hint When using bleed-through reduction, adjust the bleed-through reduction level to match the type of document. Contrast Chapter 5 Operating Procedures The color drop-out function has a "drop-out" effect that leaves out a specified color (red, blue, or green) while scanning, and a "color enhancement" effect that emphasizes a specified color. You can set each of these effects for the front side and back side. IMPORTANT The color drop-out settings are disabled when the scanning mode is set to [Color]. Auto Color Detection Settings Adjust the contrast for the images to scan. Back side Brightness/contrast This is enabled when you scan both sides of a document and should be used when the document has front and back sides of different density. Select [Use back side brightness (contrast)] to change the settings for the brightness and contrast of the front and back sides of the document. Front side (Back side) color drop-out This is enabled when Auto Color Detection is selected, and allows you to configure the following detection settings for determining whether to scan a document in color or black and white. • Mode in case of binary Specify the scanning mode to use when a black and white document is detected. • Threshold intensity to judge the document as color Adjust the sensitivity to colors in a document. • Aresize to judge the document as color Specify the ratio of colored regions in a document. IMPORTANT • The [Auto Color Detection] function cannot be used simultaneously with the color drop-out or prescan function. • The scanning speed may be reduced when the Auto Color Detection function is used. 5-31

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5-31
Chapter 5
Operating Procedures
Hint
When using bleed-through reduction, adjust the bleed-through
reduction level to match the type of document.
Contrast
Adjust the contrast for the images to scan.
Back side Brightness/contrast
This is enabled when you scan both sides of a document
and should be used when the document has front and back
sides of different density. Select [Use back side brightness
(contrast)] to change the settings for the brightness and
contrast of the front and back sides of the document.
Front side (Back side) color drop-out
The color drop-out function has a “drop-out” effect that
leaves out a specified color (red, blue, or green) while
scanning, and a “color enhancement” effect that
emphasizes a specified color. You can set each of these
effects for the front side and back side.
IMPORTANT
The color drop-out settings are disabled when the scanning
mode is set to [Color].
Auto Color Detection Settings
This is enabled when Auto Color Detection is selected, and
allows you to configure the following detection settings
for determining whether to scan a document in color or
black and white.
• Mode in case of binary
Specify the scanning mode to use when a black and white
document is detected.
• Threshold intensity to judge the document as color
Adjust the sensitivity to colors in a document.
• Aresize to judge the document as color
Specify the ratio of colored regions in a document.
IMPORTANT
•
The [Auto Color Detection] function cannot be used
simultaneously with the color drop-out or prescan function.
•
The scanning speed may be reduced when the Auto Color
Detection function is used.