Toshiba e-Studio 2040c Imaging Manual page 279

5. Scanning-specific Adjustments
(4) When scanning the original, press the [SCAN SETTING] button on the Control Panel. Press the
[BACKGROUND ADJUSTMENT] button. Press the [ ] button to decrease the background density. Then
select "HIGH" from among the compression rate options.
* This adjustment will be effective, only if the original with a color background, such as a newspaper and
color paper, is scanned.
* This adjustment will have an effect only on the image scanned in the Full color mode (including the Auto
color mode) or the Gray scale mode.
After decreasing the background density and changing the compression rate, scan the original and check the
scanned-in image quality.
With the background density set to the minimum, if further image quality adjustments are still necessary, use
other procedures.
(5) Enter the setting mode [08]. Change the value for the code [8304] to change the JPEG compression ratio.
Compression
[08] code
ratio
High quality
Standard 08-8304
Low quality
Precautions after the completion of the adjustment
• The table below shows you the correlation between the adjustment and file size. (The ratio of the file size may
vary, depending on the type of original. Therefore, use the table below just for your reference.)
• Correlation between the resolution and the file size (procedure (1))
* The file size in a resolution of 200 dpi is 100%.
Resolution
200 dpi
150 dpi
100 dpi
• Correlation between the original mode and the file size (procedure (2))
* The file size in the Photo mode is 100%.
Original mode
Photo
Text
• Correlation between the compression rate and the file size (procedure (3))
* The file size is 100%, with [MID] selected.
Compression rate
MID
HIGH
e-STUDIO2040C/2540C/3040C/3540C/4540C
Recommended
Subcode
value
Set a value smaller
0
than 128 for higher
compression ratio.
1
Set a value larger
than 128 for lower
2
compression ratio.
File size ratio
100%
Approx. 60%
Approx. 30%
File size ratio
100%
Approx. 20%
File size ratio
100%
Approx. 80%
© 2011 TOSHIBA TEC CORPORATION All rights reserved
5 - 8
Acceptable
Default
range value
0 to 255 128