Thank you for posting on the HP Support Community.
Don't worry as I'll be glad to help,
I understand that your HP OfficeJet 6958 All-in-One Printer is unable to print in black color and color print is not printing correctly. To provide you with an accurate solution, I'll need a few more details:
- Is the copy working fine?
Let's try these steps to resolve the issue:
Download and run HP Print and Scan Doctor: Follow steps from the link: Click here
Please check if you've performed all the steps from this document: Black or Color Ink Not Printing, Other Print Quality Issues
Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.