Epson Pro Mac ES-1200C - Manual (Page 12)

5. From the File menu in Photoshop, choose Acquire. Then
choose ScanTastic. (Your menu may look slightly different
than shown below.)
The first time you run ScanTastic, you may be prompted for
your name, organization, and serial number. Enter this
information and click OK. You then see the following screen:
Space : 1.46 MB Units: