Cleaning The Print Head - Epson colour 640 Printer Basics Manual

Maintenance
Maintenance

Cleaning the Print Head

If your printed image is unexpectedly light or faint, or dots are missing from the image,
you may need to clean the print head. This unclogs the print head nozzles so they can
deliver ink properly.
Cleaning the print head uses ink, so clean it only if print quality declines. You can use
either of the following to clean the print head:
The Head Cleaning utility in your printer software
The printer's control panel buttons
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Caution:
Don't use the cleaning sheets that may be included with your special
media; they may damage the printer.
Note:
To use the Head Cleaning utility, your printer must be connected to a
local port, not on a network.
Do not clean the print head while printing is in progress; otherwise your
printout may be marred.