HP Officejet 6500 All-In-One 709n Won't print black

Question

I am using a 6500 wireless printer.  The printer has been in storage for 5 months.  The cartridges were removed and placed in my refrigerator.  Upon reinstalling the cartridges the printer seemed to print; but there was no ink on the paper.  I cleaned the print heads several times.  The level of the color cartridges went down significantly; but the black cartridge did not.  I replaced the black cartridge with a newly purchased one.  The problem persists.   Test pages show all the color but no black.  The Copy/Black button gives the same results.  That is: the printer appears to print each line but no ink gets to the paper.  It is blank.

Answer 1

I too suddenly cannot print with black ink.  i replaced the colored and black cartridges.  I am getting colored ink.  I have tried numerous solutions offered on the internet including, wiping the print head, saoking the print head, running multiple printhead cleaning cycles via my hp6500 officejet all inone printer.  i have now spent better than a half day on this issue and consumed nearly all of the new colored ink!  on occasion i would test the black ink and get one short email to print in black.  the subsequent test minutes later only a blank page or text so faint it could not be read.
several months ago i had an issue with no printing...cleaned the print head and it seeems to have worked fine until now.
what options are left?  i have spare new colored cartridges i hate to throw away if i need to buy a new printer.  my printer is 4 yrs old though only used for the last 3 as it was in storage for nearly a year.
are there new hp printers using the 920 cartridges?