My Epson B1100 (Workforce) with CISS prints magenta instead of red

[Kristofer]

Hello everyone, I have an Epson B1100 (Workforce) with a pigment ink CISS.

Since a while back it does not print clear red well but instead a deeper magenta / rosé tone.

Print head cleaning and nozzled check cleared without problem (yes, the yellow ink is working fine as well).

Kindly asking someone with knowledge in this field for advice!

Thanks in advance