CISS (Continuous Ink Supply System) Canon PIXMA IP4840, 4850, 4940, MG8140, MG6140, MG5240, MG5140, iX6540, MX884
For cartridges PGI-425Bk, CLI-426Bk, CLI-426C, CLI-426M, CLI-426Y.
Remove a chip from an original cartridge and transfer it to special place on the refillable cartridge.
1. Buy Continuous Ink System and an ink set for it.
2. Fill tanks and pump over tubes and cartridges.
3. Install your CISS to the printer.
4. Clean the printhead.
5. Watch the level of ink in tanks.