HP Printer C4700 will not print the black text in word documents?

My printer has suddenly decided to stop printing black text in Word. I had to print of some papers for school and I kept getting pages that had only colored text printed. In order to have these papers by tomorrow I just changed the text all red, and then it printed. I tried reinstalling it, but no luck. Someone... show more My printer has suddenly decided to stop printing black text in Word. I had to print of some papers for school and I kept getting pages that had only colored text printed. In order to have these papers by tomorrow I just changed the text all red, and then it printed. I tried reinstalling it, but no luck.
Someone please help me! I really need to print black text papers for school.
Update: The ink levels also say that both are full
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