After having an older ink jet printer that I was able to keep running with refilling the cartridges myself, I’ve had to replace it. Now I have an Epsom with individual cartridges that I’m looking ahead for refilling...I’ve found quite a few instructions on resetting the chips on them but many of them seem to be a little suspect if they really work or not. In many cases there are Resetters available that you hold the pins against, and an LED on top lights green when it has “reset”. I think there might be two rows of four pins if I recall correctly...what is going on with this process? I’m guessing a small battery charge in the Resetter is sent to certain pins? From what I gather, the Reset involves possibly some kind of identifier but mainly tells the printer that the full number of printer sheets available has been reset, meaning it’s now full of ink.