Read Sharp AL-1456 (serv.man20) User Guide / Operation Manual online
INDEX
CONTENTS
31
4
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.
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?
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 "Custom Settings" screen.
Reference:
Scanning an Image from a TWAIN-
Compliant Application
CHECK4
Have you adjusted the brightness and
contrast suitably?
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 Brightness/Contrast Adjustment"
setting on the "Main" tab of the
"Custom Settings"
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 setings, and then click the "Scanning"
button to scan the image.
Poor Scanning Result
Click on the first or last page to see other AL-1456 (serv.man20) service manuals if exist.