Have an HP 2512 which had been working fine but now prints a blank page when sending a document from the computer. The copy button on the top also prints a blank page. Printing a diagnostic report from within the Printer Assistant prints a page just fine. Computer is running Windows 8.
UPDATE: Now working. Downloaded HP Doctor and ran it. Everything said ok. Replaced the black cartridge even though it said there was ink left. After aligning the printer it now prints.