The Epson Scan 2 (scanner driver) feature allows you to adjust the image quality when scanning. When you are using Document Capture Pro, you can open the Epson Scan 2 window by clicking the Detailed Settings button on the scan settings screen.
You can adjust the image quality of the scanned images using the features on the Advanced Settings tab. For more details on each feature, see the help on the screen displayed.
Some items may not be available depending on other settings you made.