@ Remko
Ah sorry, did not really mean "same inkset" more "same ink generation". This should be quite similar. Or at least more similar compared from the inkset of the 3880 and 7500 or the P800 to the 7500.
USB and Airprint. The expert from Tecco/Ilford told me, that Macs tend to "change" from official driver to airprint by asking you "do you want to update your driver". Which seems to be not an driver update, its a change from Epson driver to AirPrint. Had exactly this issue already with a Brother label printer. Funny when you can not print your labels, because the AirPrint driver so not support the label formats. 🙈
Thx for the link, maybe this is and issue why my 3880 needs to be deleted and reconfigured after every OSX update due to wrong colors. 🤨 Have to check this!