To obtain the best quality, you should resize your image when you're scanning instead of enlarging it later in an image-editing program. It is possible to enlarge a scanned document or photo using Epson Scan by using the Target Size setting in Home or Professional Mode. You can select to enlarge it to a predefined size such as 4 x 6 inches, A4 or A3, a custom size based on percentage of size increase or you can input a specified size if required.
To start your scan make sure your device is connected to the computer and powered on, then do the following:
The example images used are using Windows Vista, however other operating systems will be similar.
Place the item you would like to scan on the scanner's document bed and close the scanner lid.
Open EPSON Scan.
Select Professional mode in the top-right corner of the screen and the below window appears.
Select the settings you require, such as Resolution and Document Type.
Click Preview to begin a preview scan; the preview panel will appear to the right of the EPSON Scan window showing your scanned image.
To enlarge this scan, click on the [+] plus (Windows) or arrow (Mac) button next to Target Size to expand the options (below).
To create a custom scan size click the drop-down menu to the right of Target Size and select Customise. In this window select the units you would like to use (Inches, Millimetres and Pixels) and enter the dimensions of the scan then click OK. If you are likely to be using this size again you can save this as a predefined size by entering a name and clicking Save, this will then show in the main list of sizes.
Scale will allow you to enlarge or reduce the scan size by a percentage entered into this field.
Trimming will turn the automatic image cropping tool on or off.
If you are going to scan your image to a particular size, such as 8 x 10 inches, you should select the Target Size setting after previewing it but before adjusting your scan area (indicated by the marquee). This sets the scan area to the correct proportions so your image will not be cropped unexpectedly.
Once you have selected your scan size, you can click and drag the marquee to the area in the image you want to scan.