Toshiba 6520c User Manual

Page of 288
 
e-STUDIO5520C/6520C/6530C 
© 2008 TOSHIBA TEC CORPORATION All rights reserved 
5-2 
5. Scanning-specific Adjustments 
(2)  When scanning the original, press the [COMMON SETTING] button on the Control Panel.  Select a higher 
resolution in the resolution option. 
* "200 (dpi)" is selected from among the resolution options by default.  If noise occurs in a resolution of 200 
dpi, select a higher resolution (300 dpi, 400 dpi or 600 dpi). 
 
 
After changing the resolution, scan the original and check the scanned-in image quality. 
 
If further image quality adjustments are still necessary, use procedure (1). 
 
(3)  Enter the setting mode [08]. Change the value for the code [8304] to change the JPEG compression ratio. 
Compression 
ratio 
[08] code  Subcode
Recommended 
value 
Acceptable 
range value 
Default 
High quality 
Standard 1 
Low quality 
08-8304 
Set a value smaller 
than 128 for higher 
compression ratio. 
 
Set a value larger 
than 128 for lower 
compression ratio. 
0 to 255 
128 
 
 
‰
 Caution after the adjustment 
• The adjustment of the compression rate or resolution may possibly increase the size of the file to be stored.  
Therefore, carefully perform the adjustment, while checking the scanned-in image quality.  The table below 
shows you the correlation between a resolution 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.) 
* The file size in a resolution of 200 dpi is 1. 
Resolution 
File size ratio 
200 dpi 
300 dpi 
Approx. 
× 2 
400 dpi 
Approx. 
× 3 
600 dpi 
Approx. 
× 8 
 
• If the resolution selected in procedure (2) is too high, moiré may possibly occur in the scanned-in image.  
Therefore, carefully adjust the resolution, while checking the scanned-in image. 
 
 
‰
 Remarks 
Use the following steps to change the default compression rate and resolution options: 
(a) Press the [USER FUNCTIONS] button on the Control Panel to enter the "User Functions" menu. 
(b) Press the [USER] tab. 
(c) Press the [SCAN] button. 
(d) In the " COMPRESS" or "RESOLUTION" option, press the button corresponding to the desired 
compression rate or resolution option. 
 
* The default resolution can be selected on a color mode basis: Full color mode (including the Auto color 
mode), Gray scale mode and Black mode. 
• The following resolution options are available as the default: 
• Full color mode (including the Auto color mode):  600 / 400 / 300 / 200 / 150 / 100 (dpi) 
• Gray scale mode: 
600 / 400 / 300 / 200 / 150 / 100 (dpi) 
• Black mode: 
600 / 400 / 300 / 200 / 150 / 100 (dpi)