How to Refill an Rx620 Ink Cartridge

Epson's RX620 printers use the TO48 brand of cartridges, which are single-color ink cartridges containing yellow, cyan, magenta or black ink. With only one shade to deal with per cartridge, refilling one is quite simple. The more difficult step is dealing with the chip attached to the cartridge that reads the ink level. When the cartridge's ink level is empty, the chip gets tripped and the cartridge won't work in the printer any more. This means you will need to refill the cartridge and reset or replace the chip if you want to avoid buying another whole new cartridge.

Difficulty: Moderate

Instructions

Things You'll Need:

• Syringe bottle
• Refill ink
• Chip reset device

1. Remove the rubber stopper that seals the filling hole on the cartridge. This is the stopper closest to the flat tab extending out of the cartridge. The ink must go through this hole, but you can open the other stopper as well to allow air into the cartridge. This might be needed on a second refill or later.

2. Fill your syringe bottle with 5 ml of the single-color ink the cartridge holds. Use a syringe included with a kit designed for refilling Epson cartridges, if possible (see Resources below).

3. Insert the syringe needle as deep into the cartridge as you can through the filing hole and inject the ink. It's best to do this without actually depressing the syringe plunger. Raise it instead to draw 5 ml of air into the bottle. Let go of the plunger and the ink should flow into the cartridge.

4. Repeat the above procedure three or four times to fill the cartridge (it should hold 20 to 25 ml of ink). Replace the stopper(s) once the cartridge is filled.

5. Replace or reset the cartridge chip if it was tripped. The vendor you purchased the Epson refill kit from will likely have a device that can reset the chip when pressed against it. This may be easier than locating a computer vendor that can replace the chip completely.

6. Open the cartridge air hole by removing the second stopper before you place the cartridge in the printer.

Tips & Warnings

• Refilling the cartridge before it runs completely out of ink may help prevent the chip from tripping. A remanufactured cartridge designed like the RX620 may be easier to refill and reuse than a stock cartridge.
• Rinse out and dry the syringe after filling a cartridge, even if there are no more to immediately refill.

Resources

• Epson remanufactured cartridges, refill kits and chip resetters