Reddish tint in prints

I’m getting a reddish tint in my prints. Ten months ago I made the first tests on a 9900 printer, it has been sitting idle since then. I’m doing some prints now but they come out a lot more red than before.
In the tests I got a beautiful brown warm tone, not anymore.
Can the inks go old ? Is it too warm in the printer room ?
Any ideas ?
You can see in the photo. Same settings, same paper ( one in sheet, one in roll ).
Different images but you can still see the difference.

All Best

Sitting for 10 months? YES!. You need to agitate your inks every week or so and run regular nozzles checks and cleanings.


Sorry ! I’m a very bad person. I will try to better myself.
What can I do now, will I have to change to new cartridges or should I top them up and shake them, ( they are about half-full now ) ?

Shake the carts well, let settle for a few hrs, then prime them, and run a few power cleanings on all channels. This should get it back.


Thanks again Walker.
I’m loosing count of have many times you have saved my back.

Best Regards,