Ink cartridge has ink, but wont print.

[lemonadeprinter]

My HPEnvy 5660 printer has full color and black and white cartridges.  Everything is clean and aligned.  The color ink is light.  The black won't print at all.  I am trying to print documents from my Mac.  

[Bob_Headrick · Accepted solution]

The troubleshooting steps in the document here may help resolve black and color not printing properly on your Envy 5660 

[lemonadeprinter]

I needed to clean the cartridges several times for the black ink to work.  I have been told if I don't use my printer for a few months the ink dries up.  What a waste with almost new cartridges.  Luckily, I think i brought the cartridges back to life.  It's not perfect, but acceptable for now.  Thanks for the tip.

[Bob_Headrick]

Cartridges can sit in the printer unused for a long time, but only under the right conditions.  The following are important for proper storage:

• Make sure the printer is properly turned off from its power switch.  Do not unplug the printer until the printer has had a chance to properly park the printheads.  This may take perhaps thirty seconds.  After turning off the printer wait until all noise from the printer stops before unplugging the printer.
• Do not store the printer in a location prone to temperature extremes.  Examples of places not to put the printer would be near a window where it could be hit with direct sunlight, or near a heating or cooling vent.