5.Scanning-specific Adjustments
e-STUDIO2010AC/2510AC/2515AC/3015AC/3515AC/4515AC/5015AC © 2018 TOSHIBA TEC CORPORATION All rights reserved
5-8
(4) When scanning the original, press [Scan Setting] on the Control Panel. Press [Background
Adjustment]. Press [ ] 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, perform other procedures.
(5) Select [05 ADJUSTMENT MODE]. Change the value for the code [8304] to change the JPEG
compression ratio.
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%.
• Correlation between the original mode and the file size (procedure (2))
The file size in the Photo mode is 100%.
• Correlation between the compression rate and the file size (procedure (3))
The file size is 100%, with [Mid] selected.
Compression
ratio
[05] code Subcode
Recommended
value
Acceptable
range value
Default
High quality
05-8304
0
Set a value smaller
than 128 for higher
compression ratio.
Set a value larger
than 128 for lower
compression ratio.
0 to 255 128Standard 1
Low quality 2
Resolution File size ratio
200 dpi 100%
150 dpi Approx. 60%
100 dpi Approx. 30%
Original mode File size ratio
Photo 100%
Text Approx. 20%
Compression rate File size ratio
MID 100%
LOW Approx. 60%
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