Epson STYLUS COLOR 680 Manual page 131

4. Push back the release tabs and lift up the ink cartridge clamp
as far as it will go. The cartridge rises partly out of the
cartridge holder.
The illustration shows color ink
cartridge replacement. To
replace the black ink cartridge,
lift up only the smaller clamp on
the left.
5. Lift the cartridge out of the printer and dispose of it properly.
Do not take the used cartridge apart or try to refill it.
Replacing Ink Cartridges
7-5