I print on DVD platters.
The printer is a...
"Epson Stylus Photo R290"
It's been going well for years but recently I have been using Internet
cheap inks, like this....
https://www.inkstation.com.au/
....which work, though the blacks are not as intense.
Now the printing has become faint and yellowish.
I have done all the nozzle cleaning/maintenance possible but the
problem remains.
Can this be some printer hardware problem? Does anyone have similar
vicissitudes?