Settings - Epson PERFECTION 1640 SU Reference Manual

Settings

Click the Settings button on the Manual mode window to view
the following dialog box. You can view all the settings for the
current preview image in this dialog box. Also, you can apply any
custom settings you have saved.
To save the currently selected settings, type a new name in the
User defined settings field, then click Save.
To delete a setting, select the setting name in the list, then click
Delete.
To scan a single image with several different settings, make and
save each group of settings as described above. Then hold down
the Shift key while clicking the custom settings you want to select
in the User defined settings list. After selecting all the settings
you want to use when scanning, click Batch Scan. The scanner
scans the image once for each group of settings you have selected.
To apply saved settings, select a setting name from the list, then
click OK. The preview image will reflect the settings you saved.
To restore the previous settings, click Cancel.
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Understanding EPSON TWAIN Features