EPSON Scan is a utility designed to to scan using your device. To check the INK level, you can either go to Printers and Faxes in Control Panel or use its application from Start > All Programs > Epson. There should be a utility to check various settings related to your printing device. In Printers an Faxes, right click the printer and select Properties. Navigate through tabs until you see the ink tanks and their levels.
If the printer fails to scan, then you need to acquire the drivers for your operating system from Epson Support and download them. Additionally, check the cables so that the printer is connected and detects your computer.
Another solution is to restart the Print Spooler service (handles printing). To do this, go to Start > Run and type services.msc followed by Enter. Locate Print Spooler, right click it and select Restart. If the dependency services are working normally, the service will restart.