INDEX
CONTENTS
30
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If you get poor quality as a result of scanning a job, and you cannot improve the quality by changing preferences, refer
to the check list shown below.
CHECK1 Is the original clean?
Check your original before scanning. If any dust
sticks to the original, you cannot obtain a clean
result. In addition, make sure that the original table
is also clean.
CHECK2 Have you specified a suitable resolution?
Make sure that the value for the "Resolution" setting
in the scanner driver satisfies the requirement of the
set original.
Reference: Scanning an Image from a TWAIN-
Compliant Application,
Scanning an Image from a WIA-Compliant
Application (Windows XP),
Scanning an Image from the "Scanner and
Camera Wizard" (Windows XP),
CHECK3
Have you specified a suitable value for the "B/
W Threshold" setting?
If you are scanning with a TWAIN-compliant
application and are using "Mono 2 gradation (no
Green)","Mono 2 gradation (no Red)" or "Mono 2
gradation (no Blue)" mode, make sure that a
suitable value is specified for the "B/W Threshold"
setting. A larger threshold value makes your output
darker, whilst a small threshold value makes it
lighter. To adjust the threshold automatically, click
the "Auto Threshold" button on the "Image" tab of
the "Professional" screen.
Reference: Scanning an Image from a TWAIN-
Compliant Application
CHECK4 Have you adjusted the brightness and
contrast suitably?
If you are scanning with a TWAIN-compliant
application and the resulting image has unsuitable
brightness or contrast (for example it is too bright),
activate the "Auto Contrast/Brightness Adjustment"
setting on the "Main" tab of the "Professional"
screen. Click the "Brightness/Contrast" button to
adjust the brightness and the contrast viewing the
scanned output image on the screen.
If you are scanning with a WIA-compliant
application or the "Scanner and Camera Wizard",
click "Adjust the quality of the scanned picture" or
the "Custom settings" button, and adjust the
brightness and contrast in the screen that appears.
If part of the image from the back side of the original
appears in the preview scan.
If you are using a TWAIN-compliant application and the
back side of the original appears faintly in the preview
image, try adjusting the Brightness and Contrast settings.
Click the "Brightness/Contrast" button in the Preview
screen to change to the Brightness/Contrast screen, and
adjust the "Brightness" and "Contrast" values. A preview
of the image using the new values appears under "After".
When the image of the back side disappears and you can
get only the needed image, click the "Apply" button to
apply the new settings, and then click the "Scanning"
button to scan the image.