Have you ever wondered what the inside of an Epson 4800 220ml inkjet cartridge looks like? Here I have a look at a used cartridge and muse on why Epson does not like re-use…
It was easy to open up one of these cartridges. I just slit the paper label around the shut line with a scalpel and prised the top off with a couple of wide screwdrivers. The whole lot is simply clipped together with twelve securing tabs, which you can see in the photo.
The result is shown in the photo below (and it was only while I was adjusting it in Lightroom that I noticed the letter heading “The Shame of Litter” in the newsprint…)

Inside is an aluminised plastic bladder with a valve (see close up photo of it below) for the ink to be drawn out into the printer. It slips out quite easily, being held in place by the neck of the valve. There is no connection between the ink container and the cartridge so there is no physical connection with the cartridge’s chip.

This lack of connection means that it would be pretty easy for Epson to re-use the cartridges by simply putting in a new ink bladder and resetting the chip. It would also be pretty easy for Epson to supply re-fills for users to put in themselves, but that would mean that Epson would have to sanction or sell a chip re-setter, which Epson seem dead set against. Epson’s recent aggressive defence of their intellectual property trying to put a stop to third party ink and cartridge suppliers indicates that this is far from their thoughts.
I am very happy to re-use the maintenance tank (see this link for my instructions on how I do that), but refilling a used bladder seems to be too much of a risk to me.
Epson seem pretty set against doing anything “green” that would challenge their current business model of selling a reasonably priced printer and making their money on the ink – of course that might upset us, the users, if we had to pay for Epson’s profit in the printer purchase price – we might not like the numbers that came out – but not re-using something that seems eminently designed to be re-used seems perverse in the current sustainability climate. Read more...
















