UMAX Technologies Astra 2100U - Manual (Page 38)

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Table 2. Recommended Resolutions
Image Use Recommended Resolution
Printing 300 – 600*
Viewing on the Screen 72
Viewing on the Web 72
OCR, B/W 300
Pre-Press 600
Enlarging or reducing 600
* Depending on the resolution of your printer
Using Custom Resolution Settings
You can also specify custom resolution settings that you can use
when you scan. The maximum custom resolution setting you can
define is 2400 dpi. To define the custom resolution settings:
1. Choose the Custom… option from the Resolution drop down
menu. The Custom Resolution window opens.
2. Enter the desired resolution setting (between 50 and 2400 dpi)
in the Custom resolution #1 text box.
3. Repeat step 2 to define the Custom resolution #2 and Custom
resolution #3 settings.