There is only one way in, so the exit must be the same......unless printers deal in the fourth dimension....ala Twilight Zone...just kidding.
The pressures we are dealing with are small and so is the volume, you would not be able to hear any air release.
Since I supplied you with these carts I will tell you that there are accumulator/damper chambers and labyrinths for the air intake path. Those rectangular empty parts in the middle are actually functional. they are not fillers. To a degree, these will provide some protection but they are not there for that reason. The last save your butt feature is that the exit position of the air intake is at the top corner but is next to your proposed refill position. Now if the carts did not have both these save your butt features, then you could have a mess on your hands one day as time went along. These features are not failsafe but "good enough" to use within the context of useable refillables.
I cannot comment on other vendors products. It would be wrong of me. It is best that they be contacted to explain the engineering behind their products.
My safe recommendation is to refill these outside of the printer and replace the yellow air intake cap before doing so. You can always do otherwise but be aware of the reasoning of what you need to avoid when doing so. Recently I had a customer who had his labyrinth clog with dried up ink over the years....that channel would not print...he thought he had a clogged printhead ...(similar to a Canon cart with the air intake clogged). ....until he changed the cartridge. So getting ink into that small diameter labyrinth path is not a good thing at all. The yellow plug prevents that as best as practically possible and it should only be removed just before reinserting into the printer.
I think this discussion will present some light on the engineering differences between an OEM product and an aftermarket refillable product. For Epson, foolproof engineering is high on the priority....the bag will never fail and the pump system is engineered very simply and never expects to see incoming ink. In the aftermarket, the onus is on refillable, inexpensive and foolproof comes thereafter.
The pressures we are dealing with are small and so is the volume, you would not be able to hear any air release.
Since I supplied you with these carts I will tell you that there are accumulator/damper chambers and labyrinths for the air intake path. Those rectangular empty parts in the middle are actually functional. they are not fillers. To a degree, these will provide some protection but they are not there for that reason. The last save your butt feature is that the exit position of the air intake is at the top corner but is next to your proposed refill position. Now if the carts did not have both these save your butt features, then you could have a mess on your hands one day as time went along. These features are not failsafe but "good enough" to use within the context of useable refillables.
I cannot comment on other vendors products. It would be wrong of me. It is best that they be contacted to explain the engineering behind their products.
My safe recommendation is to refill these outside of the printer and replace the yellow air intake cap before doing so. You can always do otherwise but be aware of the reasoning of what you need to avoid when doing so. Recently I had a customer who had his labyrinth clog with dried up ink over the years....that channel would not print...he thought he had a clogged printhead ...(similar to a Canon cart with the air intake clogged). ....until he changed the cartridge. So getting ink into that small diameter labyrinth path is not a good thing at all. The yellow plug prevents that as best as practically possible and it should only be removed just before reinserting into the printer.
I think this discussion will present some light on the engineering differences between an OEM product and an aftermarket refillable product. For Epson, foolproof engineering is high on the priority....the bag will never fail and the pump system is engineered very simply and never expects to see incoming ink. In the aftermarket, the onus is on refillable, inexpensive and foolproof comes thereafter.
