Blue ink not printing or only partially printing

[LucaBru]

When I print the test page, alignment page, etc. every seems fine, but then with pictures or graphics containing blue, there are stripes of blue missing. The first pass of the printer i s correct, but the following ones miss growing sections of blue.

Any suggestion?

Example of missing blue sectionsTestAlignmentquality test

[Nal_NR]

Hi @LucaBru

Welcome to the HP Support Community. 

I'd like to help!

Please perform the steps from this document and see how it goes. 

Update the firmware

Hope this helps! Keep me posted for further assistance.
Please click “Accepted 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!

[Nal_NR]

Hi @LucaBru,

Hope I was able to fix the issue. If you need further assistance, feel free to reach out to us. 

Give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers and did reply to you!

[LucaBru]

Hi Elohi, and thank you for replying to my post.

Unfortunately, the situation did not improve, on the contrary it is worsening.

Here is the framework:

I have an IMac M1 with MacOs Ventura 13.1 and a HP Officejet Pro 6960 printer.

The printer seems totally unable to print with the cyan ink. The scanner cannot even recognize the alignment page as it is missing the blue sections. The proposed solutions do not work:

- I am receiving no error message when I print, but the quality is absolutely unacceptable

- Reinstalling the driver applies to Windows computers, not Macs

- Cleaning the printheads did not help

- Manually cleaning them did not help

- There are no print smears on the rear of printouts

- I am using official InstantInk cartridges and appropriate paper

The suggestion of installing the Smart application does not seem acceptable, given the extremely bad reviews of this app on the Apple Store.

Unplugging the printer did not help.

Would you or anybody else in the forum have any idea of the possible reasons for the malfunctioning and - more important - of the possible solutions?

Many thanks!

AlignmentTest page

[Nal_NR]

Hi @LucaBru

You are welcome. 

Well if you are still facing issues after trying the recommended steps then, This might require one on one interaction to fix the issue.

I've sent you a private message with further instructions. In order to access your private messages, click the private message icon on the upper right corner of your HP Support Community profile, next to your profile Name or simply click on this link.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!