OK, after a few final retries with the Jetyoung spongeless cartridges and after being contacted by Jetyoung with more instructions I think I can provide a verdict. The spongeless cartridge is a great idea. But its implementation from Jetyoung, though it has a great potential, it is not yet reliable.
Without a sponge in the outlet hole, the cartridge creates a puddle of ink that is secured by the outlet lips and the rubber pad which surrounds the metallic ink pickups on the printhead. This engineering works without problems in the first time. However, when one removes the cartridge, the puddled ink flows freely from the printhead nozzles and that creates a mess.
Secondly, the cartridges are not build with high quality standards. In many cases I had to apply force in order to place them in their right positions. The most notable reason for this is that one side of the spongeless cartridge is made up from a plastic membrane that is glued to the polyester casing. Small excesses of this membrane protrude and that causes the cartridge to be out of the proper size.
Thirdly, of the 20 cartridges I bought (4 for each color), I tried at least the half of them and I was never without problems. Despite prolonged cleaning and deep cleaning cycles, I never found myself at ease with the results. Either a color would not print at all, or there would be streaks and then I would remove the printhead to inspect it only to find puddles of ink at the nozzles... a huge constrast with the original BCIs which would "heal" the printhead of any adverse effects caused by the Jetyoungs.
Is there an issue of viscosity? Honestly, I don't think so. What I do know is that I tried these cartridges with the ink provided by Jetyoung and the results were far worse to what I experienced when I filled them with my own "unspecified, low quality" ink. And by the way, I also tried the Jetyoung ink on the normal Canon cartridges and it didn't work well either.
To be fair, I must say that I've had an excellent communication with Jetyoung. They accept paypal, and they were eager to accomodate with my special instructions about shipping. The package arrived in 4 days. And the prices are unbelievably low! I simply don't think that their spongeless cartridge, in its current design, is meant to be used as a reliable alternative.
Without a sponge in the outlet hole, the cartridge creates a puddle of ink that is secured by the outlet lips and the rubber pad which surrounds the metallic ink pickups on the printhead. This engineering works without problems in the first time. However, when one removes the cartridge, the puddled ink flows freely from the printhead nozzles and that creates a mess.
Secondly, the cartridges are not build with high quality standards. In many cases I had to apply force in order to place them in their right positions. The most notable reason for this is that one side of the spongeless cartridge is made up from a plastic membrane that is glued to the polyester casing. Small excesses of this membrane protrude and that causes the cartridge to be out of the proper size.
Thirdly, of the 20 cartridges I bought (4 for each color), I tried at least the half of them and I was never without problems. Despite prolonged cleaning and deep cleaning cycles, I never found myself at ease with the results. Either a color would not print at all, or there would be streaks and then I would remove the printhead to inspect it only to find puddles of ink at the nozzles... a huge constrast with the original BCIs which would "heal" the printhead of any adverse effects caused by the Jetyoungs.
Is there an issue of viscosity? Honestly, I don't think so. What I do know is that I tried these cartridges with the ink provided by Jetyoung and the results were far worse to what I experienced when I filled them with my own "unspecified, low quality" ink. And by the way, I also tried the Jetyoung ink on the normal Canon cartridges and it didn't work well either.
To be fair, I must say that I've had an excellent communication with Jetyoung. They accept paypal, and they were eager to accomodate with my special instructions about shipping. The package arrived in 4 days. And the prices are unbelievably low! I simply don't think that their spongeless cartridge, in its current design, is meant to be used as a reliable alternative.