My HP 560C DeskJet printer has a thin white line thru the black text, horizontally, throughout the entire document. I have run the alignment test, installed a brand new cartridge, and just about everything else that I can think to do to the thing. I'm working under a deadline to finish a school project and I just don't just know what more to do with this thing. I've tried going to HPs web site, but it's 99% useless as far as getting any tech support via the web is concerned. Does anyone out there have any idea what might be causing this problem, and how to correct this. The color cartridge prints perfectly fine. I have also loaded the latest printer download onto my system, so I'm pretty sure that is not the problem. With my somewhat limited knowlege of desktop support, I am at a complete loss as of this moment as to how to correct this problem. Plese, could someone help me out with this. Thanks a million......