B209-a will not print black, but all other colors, including gray work very well

When I try to print, all the colors, including gray, print very well, but black does not print.  I tried two new cartridges which do not solve the problem.  Also, I rebooted the computer and the printer and clean the print head.  Printer has two years.  Any ideas for troubleshooting?  I'm on Mac OS X Lion (10.7.5) thank you.

He has not worked for me, but I thank you for your response.  Looks like it's maybe time for a new printer

Tags: HP Printers

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