HP Officejet Pro 8500 Wireless. Has worked flawlessly for several years. Today after printing a large volume of pages the unit the print started to fade. The cartridges were very low and the warning of low in ink came. As I had another hundred pages to print I changed all four with new fresh HP cartridges. What it does now is print about two pages and then the printing starts to fade so much the next page is next to unreadable. I run all the checks twice and then the align and it failed that. Did it twice.
The weird thing is I can print at least one and maybe two pages individual but not any more than.