Epson Ultra Hi-Definition Photo Printer R260 - Manual (Page 50)

50 Maintaining Your Printer
8. Remove the yellow tape from the bottom of the ink cartridge.
Caution:
You must remove the yellow tape from the cartridge before you install it;
otherwise, print quality may decline or you may not be able to print.
If you have installed an ink cartridge without removing the yellow tape, take the
cartridge out of the printer, remove the yellow tape, and then reinstall it.
Do not remove the transparent seal from the bottom of the cartridge; otherwise,
the cartridge may become unusable.
Do not remove or tear the label on the cartridge; otherwise, ink will leak.
9. Lower the cartridge into the holder, with the green circuit board facing the
front. Then gently push the cartridge down until it clicks into place.