Printer printing black as green

[bellow]

I have a HP C5180 printer that even though there is black ink in it when printing pictures with black the black is green. is there a way to fix this?

[Geek-9pm]

Is this a new problem
Find a good photo to verify all the colors.
Notice which colors are missing.
The symptom is most often due to a clogged print head. But it can happen if the ink cartridge has been in storage for a long time and is now very old. These can break down with time. The colors can change or or the ink may not flow well.
Is this  the user guide?
http://h10032.www1.hp.com/ctg/Manual/c00737535
Have you read the use guide?

HP has a user forum.
https://h30434.www3.hp.com/t5/Inkjet-Printing/HP-Photosmart-C7280-Black-Ink-won-t-print/td-p/2157/page/17
The problem he has might be like your problem.
He explains that he had  to dip the ink cart into some alcohol to release dried ink on the bottom part. Do this at your own risk. It can be very messy.

Personal recommendation: If this printer is over a year old, go  buy one like it or almost like it. Some of these type of printers sell for under $100. I  think you wail save time and money with a new printer. 

[bellow]

it just started today. I had printed black and white picture fine before