Till these day I am still looking for spongeless cartridges or cartridges with lesser sponge.
I had tried some spongeless for CLI-8 series, those that had similar design as Epson are bad to be used on canon. They starve the supply of ink to the printhead.
I had posted quite a long while but haven't seen any response. (
http://www.nifty-stuff.com/forum/viewtopic.php?id=4204)
Anyone had access to these cartridges. This is more commonly found in Europe. I wonder if anyone from Europe happen to see anyone sell these as used empty cartridges, or if they are sold off cheaply because the seller are replacing/ditching their canon printer and had no used of these compatible cartridge, would be kind to drop me an email/pm when you happened to see them. As I wishes to experiment on these cartridges.
And mapsy,
I would love to experiment on your little sponge cartridges as well. Any of your customers who had problem with these cartridges return these cartridges back to you for refund. And if I could buy them at a fraction to experiment? If not, it's okay.
At post#10, you were saying that some of your users of your cartridge had refilling without capping the ink flow hole. I would not think this is the cause of the problem. In fact, the ink flow hole should be open when refilling as the air coming from the sponge compartment must goes into the empty compartment to exchange ink as the sponge gets absorb with ink. This is similar concept to the canon original cartridge. When you first refill canon original cartridge, you leave the top inlet air hole above the sponge open (the top hole where the maze area is), and inject the ink into the empty compartment, as the sponge gets absorb with ink at about 3/4 or 70-75%, you would use your finger to close the inlet air hole so as to minimize too much ink gets further absorb into the sponge causing it to overfilled. If you notice canon CLI-8 sponge beside the outlet port small filter sponge, it as 2 pieces (top and bottom) . The top part do not gets overfilled with ink.
At this moment as I don't have physical hold of your cartridges to look at it close up, I would think the likely cause to the problem with the design of your cart could be the design of the passage of the hole where inks flow to the sponge area. Too small a hole could cause problem with the speed of the flow of the air and ink exchange causing the sponge to absorb ink at a slower speed to meet the demand during printing or when the printer perform waste ink cycle. This would cause ink starvation (bearing in mind that canon printhead works by capillary action). Too big a hole either would cause leaking or the sponge absorb too much ink such that too much pressure and causing ink leak inside the printhead.
Another problem would be quality control during production. Some pieces cartridges might have poorly made that might not be noticeable when it leaves the production plant. I had tried skyhorse cartridges before sometime one of the cartridge outlet port filter does not touches the printhead well while all the other cartridges do not have the problem. So it's a hit or misses.
Does all this mean that canon printer cannot use spongeless cartridge? No. Because if we recap this thread (
http://www.nifty-stuff.com/forum/viewtopic.php?pid=18754), the PGI-9 cartridges are actually spongeless. I would say it all depend on the design of the cartridge. But a sponge one works better on canon.