Not printing Paper became stuck in printer.  Removed paper and printed some pages.  Then stopped printing except for red.  Then dragging line across page.  Then nothing printed.  Checked for any paper fragments and removed them.  Cleaned head and checked nozzle.  Ink does not need replacing.  Paper flows easily through printer.  Sounds as if printing but nothing on paper.  Epson Stylus CX6400.  Thanks

You probably have paper debris stuck to the underside of the print head.

While you are printing, pull the lead from the back of the printer leaving the head free floating and unlocked so you can slide it back & fore. Get a piece of kitchen roll and fold it until it's the size of the track beneath the print head slide the head to the left, place the folded kitchen roll flat down in the print track, slide the head over the folded kitchen roll until it appears on both sides of the head. Grab both ends of the roll and lift it toward the head. Slide the roll sideways left and right to physically clean the bottom of the print head. Try not to tear it as it will trap under the head. let go of one end and slide the head away until you can pull the roll out. It should have a lot of ink and gunk on it. Plug the printer in and the head will reset itself.

Now because printing has been non existant, you'll need to "Prime" the heads. Use the maintenance software and click head cleaning, when finished do not allow the nozzle check pattern to print. Carry out 3 more head cleans cancelling the nozzle check after each one by clicking [Finish] until 4 cleans have been completed. Then allow the nozzle check pattern to print and it should be back to normal. If not perfect, carry out another "Prime" as above.

Hope this helped.

Nigel
The INK Store
http://www.the-inkstore.co.uk