Printer Cartridges are surprisingly costly. As an alternative, you can get it refilled at a store. The cheapest and effective alternative though is to refill it yourself. All it takes is a bottle of printer-ink and a syringe.
There is a black spot on the white-sticker covering the top-cover of the cartridge. Underneath the black spot is a hole through which ink can be injected into the cartridge. You can peel off the sticker to locate the hole. Or simply pierce the black spot with a needle.
Draw ink into the syringe slowly and inject it into the hole. That's it!
Some important tips:
The needle size is very small. If you draw ink into the syringe too quickly, you can create air-gaps. Air gaps can block your ink cartridge. So make sure that there are no air bubbles before you inject ink through the hole.
Refilling is a messy job. Make sure you have a piece of paper/waste cloth. The image has a clean background only to make it look good!
I was advised to fill the cartridge to near-capacity and not full. i.e., my cartridge's capacity is 19ml. So I filled it to about 13ml. Probably this is to prevent leakage.
Once, the cartridge is filled, it should be allowed to set for a few hours. This lets the ink to settle at the bottom of the sponge. The sponge is located inside the cartridge & cannot be seen.
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