HP Photosmart C4740 Black Not Printing

[JS_SC]

My HP Photosmart C4740 does not print BLACK, only COLOR.  When I try to print a document, with COLOR specified in the Printer settings, the paper comes out GRAY not BLACK.  When I try printing GRAY-SCALE only, nothing prints.  Both ink cartridges are almost new and authentic genuine HP 60 origins.  I've tried multiple things, cleaning and aligning the print cartridges, and even reloading the print drivers, to no avail.  Help me solve this problem.  Thanks

[KrazyToad]

@JS_SC

Welcome to HP Support Community

I appreciate all your efforts and expertise in troubleshooting this issue

At this point I suggest you contact HP Support for Service Options

1) Click on this link - www.hp.com/contacthp/ 
2) Select your product type below.
3) Enter the serial of your device. 
4) Select the country from the drop-down. 
5) Select the chat or get phone number options based on your preferences. 
6) Fill the web-form and proceed further.

You can refer to this Link: https://support.hp.com/us-en/product/hp-photosmart-c4700-all-in-one-printer-series/3794613/model/383...

Thank you 😊