Toshiba e-STUDIO2010AC Imaging Manual page 314

5.Scanning-specific Adjustments
(4) When scanning the original, press [Scan Setting] on the Control Panel. Press [Background
Adjustment]. Press [
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, perform other procedures.
(5) Select [05 ADJUSTMENT MODE]. Change the value for the code [8304] to change the JPEG
compression ratio.
Compression
[05] code
ratio
High quality
Standard 05-8304
Low quality
 Caution after 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
LOW
e-STUDIO2010AC/2510AC/2515AC/3015AC/3515AC/4515AC/5015AC
] to decrease the background density. Then select "High" from among the
Recommended
Subcode
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. 60%
5-8
Acceptable
value range value
0 to 255
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Default
128