How do I fix blurry printing, already tried all the basic diagnostics?
HP Officejet Pro 8600Plus printing is blurry and light for all colors but blue. Was printing fine with refilled cartridges until a few weeks ago. Black ink got low and replaced with brand new HP black ink. Here's what I've tried multiple times that didn't help. What else can I try please?
-Reset printer by unplugging several minutes
-Printing test page: blue boxes look fine. Yellow, red and blackall have vertical lines and faded colors. Black text is blurry and faded. Test pattern lines do not connect fully.
-Printing 20 black text pages to see if problem "resolved itself" as HP site says!!