11.Press the H ink button. The printer begins charging the ink delivery system.
The green P power light and red H ink lights flash and the printer makes noise. Charging takes about 90 seconds. When it’s finished, the green P power light stops flashing and stays on. The red H ink light and the light(s) above the cartridge(s) go out.
Caution: Never turn off the printer while the green P power light is flashing, unless the printer hasn’t moved or made noise for more than 5 minutes.
Aligning the Print Head
If your printouts contain misaligned vertical lines, or you see light or dark horizontal banding, you may need to align the print head. You can have the printer automatically check and align the print head or you can check and adjust the alignment yourself.
Automatically Aligning the Print Head
1.Turn on the printer.
2.Load plain,
3.Do one of the following:
Windows: 
icon on your taskbar (in the lower right corner of your screen). Select Print Head Alignment.
Mac OS X: Open the Applications folder and select EPSON Printer Utility. Select SP R1800, click OK, and select Print Head Alignment.
You see a screen like this:
4.Click the Automatic button, if necessary, then click OK.
5.On the next screen, click Start. The printer then prints and checks an alignment pattern. It then prints and checks two more patterns.
84 Maintaining Your Printer