Canon CanoScan N650U User Manual - Page 51

The Halftone Sheet, Halftoning, Threshold

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chapter 4 What is on the Screen? Top Page Glossary Contents 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. • If you selected Text Enhanced(OCR), you cannot make any changes on this sheet. Note • 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. 51

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51
chapter 4
What is on the
Screen?
Top
Page
Glossary
Contents
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.