What causes fine black lines across paper?
I'm using an Epson Stylus Photo 1280 printer and have been getting fine black lines across the paper, sometimes all the way,sometimes not. It occurs on a sporadic basis. There may be one line or hundreds. I notice it most on photo prints 8.5 x 11 or larger, although it's sometimes on plain paper.
I've tried head cleaning and changing cartridges, without relief.
Any ideas what might be causing this problem?