Epson DS-510 Scanner cannot be added under Printers and Scanners

I would like to add my 'new' scanner to the Printers and Scanners so that I can see it under a third party application called DEVONthink Pro Office.

When I go to Printers and Scanners, I click the "Scan" tab, then hit the "+" to add the scanner. It only shows me the HP Printer.

I should say that I can use the EPSON Scan application and scan however the third party application I use requires the scanner to show up under Printers and Scanners. Any help is greatly appreciated.

Thank you!

Gilbert