Hi John. Welcome to justanswer.
Probably the one of the colored ink cartridges has malfunctioned.
Take out one at a time and then check by printing (colored ones) to see which one has become faulty. Just replace the bad one and you will be good to go.
Hi, just checking in. How did things turn out?
Great. Is there anything else I can help you with?
Please rate the chat positively by clicking the 5 stars present on the upper panel so that I can get credited for my services. Thanks