Black ink is printed grey, but why???

[MIIIN]

The black ink pf my printer is printed grey, not black. You can't read the Text, because it is very light. The tank is full of black ink, so it can't be to little. I already clean the printer via hp smart app. Why is it like that?

What can I do????? 

[Jay_G24]

Hi @MIIIN,

 I'd like to help!

To better assist you - 

1) Does the copy print out the same way? 

2) What's the application you are trying to print from? Have you tried printing from a different application or devices? 

While you respond to that, let's print a Print Quality Diagnostic page 

On the printer control panel, press the Resume and Color Copy buttons at the same time.

Post the Print Quality Diagnostic page here so we can help you further. 

You may also refer to this document with steps to fix " Print Quality Issues" issue applicable for your printer -  Print Quality Issues

 Also, try updating the printer's firmware - HP Printers - Updating or Upgrading Printer Firmware 

Hope this helps! Keep me posted. 

And, Welcome to the HP Support Community

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!