HP Officejet 6500A Plus black ink smears
We purchased a new HP Officejet 6500A Plus e-All-in-One Printer (E710n) printer 5-6 years ago.
For a few years, the printer has had an issue printing using black ink.
We only use standard A4 paper.
We've tried the Clean Printhead and Align Printhead Tools on the printer itself.