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e-STUDIO281c/351c/451c
(2) When scanning the original, press the [EDIT] button on the Control Panel. In the "RESOLUTION" option,
select a higher resolution.
* In the "RESOLUTION" option, "200 (dpi)" is selected 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 adjustments are required, use procedure (1).
Cautions after the completion of the adjustment
• The adjustment of the JPEG 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 1
300 dpi
Approx. × 2
400 dpi
Approx. × 4
600 dpi
Approx. × 10
• 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 "JPEG COMPRESS" and "RESOLUTION" options:
(a) Press the [USER FUNCTIONS] button on the Control Panel to enter the "User Functions" menu.
(b) Press the [USER] button.
(c) Press the [SCAN] button.
(d) In the "JPEG COMPRESS" or "RESOLUTION" option, press the desired button to change the default
setting.
* The default resolution can be selected on a color mode basis: Full color mode (including Auto color mode),
Gray scale mode and Black mode. But, remember that some of the resolution options cannot be selected as
the default. (The resolution options available vary, depending on whether the optional GC-1181 and GC-
1230 expansion memories are installed or not.)
• The following resolution options are available as the default:
• Full color mode (including Auto color mode): 300 / 200 / 150 / 100 (dpi)
• Gray scale mode: 400 / 300 / 200 / 150 / 100 (dpi)
• Black mode: 600 / 400 / 300 / 200 / 150 (dpi)
5. Scanning-specific Adjustments
5.1