Adjust Print Quality : Align the Print Head

Align the Print Head
If your printouts become grainy or blurry, or you see dark or light bands across them, you may need to align the print head.
It’s best to run the automatic alignment utility first to let the printer check and align the print head, if necessary. If you still notice alignment problems, you can align the print head manually.
Banding may also occur if your print head nozzles need cleaning.
Load a few sheets of Epson Presentation Paper Matte (or the photo paper you have on hand) in the sheet feeder. It’s best to use matte or photo paper for the most accurate alignment.
Windows: Right-click the  icon in the bottom right corner of your screen (the taskbar) and select Print Head Alignment.
Macintosh: Open the Applications folder, open the Epson Software folder, open the Epson Printer Utility 4, and click OK. If you have more than one printer, click Printer List and select your product. Then select Print Head Alignment.
To have the printer check and align the print head automatically, click Automatic, then click OK. Follow the on-screen instructions to print the alignment check patterns and align the print head as necessary.
To align the print head manually, click the Manual button, click OK, and continue with the rest of the steps here.
Do not press the  paper button to cancel a print job when the alignment sheet is printing.
If no patterns are aligned, choose the closest one and click Realignment. Then print another alignment sheet and check it.