My Photosmart 7510 C311a is randoming skipping lines, apparently only when I print something from the internet. So far, it seems that when I print documents I have created, it works fine.
When I printed out a Print Quality Diagnostic Report, the black line on the right side of each series of colored vertical lines was not all black but blue in the middle. I installed a new black ink cartridge even though the old one was still about 1/3 filled but that didn't help. Am using Windows 8 if that matters.
I live a long distance from the nearest repair facility and I really hope to be able to correct this on my own. Please help.