Canon CanoScan FB 630U User Manual - Page 59

Threshold, Descreen, Test Scanner, Calibration

Get Canon CanoScan FB 630U PDF manuals and user guides View all Canon CanoScan FB 630U manuals
Add to My Manuals
Save this manual to your list of manuals

Page 59 highlights

chapter 5 What is on the ScanGear CS Main Window? Top Page Glossary Contents Index Threshold Threshold determines whether portions of an original are scanned as black or white. Drag the slider right to make the document lighter or drag it left to make the document darker. You can also enter the values directly into the entry box (range: 0~255). This feature is enabled only when the Scan Mode on the Main sheet has been set for Black and White. Otherwise, this slidebar is dimmed and disabled. Descreen Click this check box if you want ScanGear CS to conduct moiré reduction to improve the overall image quality. Moiré patterns are dot-like 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. 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 to inform you of the results. If a problem is reported after the test, use your scanner manual 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. 59

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
Top
Page
Glossary
Contents
Index
59
chapter 5
What is on
the ScanGear CS
Main Window?
Threshold
Threshold determines whether portions of an original are scanned
as black or white. Drag the slider right to make the document
lighter or drag it left to make the document darker.
You can also
enter the values directly into the entry box (range: 0~255). This
feature is enabled only when the Scan Mode on the Main sheet
has been set for Black and White. Otherwise, this slidebar is
dimmed and disabled.
Descreen
Click this check box if you want ScanGear CS to conduct moiré
reduction to improve the overall image quality.
Moiré patterns
are dot-like 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.
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 to
inform you of the results. If a problem is reported after the test,
use your scanner manual 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.