ThrillaMozilla
Printer Master
- Joined
- Jan 18, 2011
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Sorry about the diversion from the purty pictures. Fortunately, this thread is almost done.
Mikling once mentioned that at one point Canon added a little groove at the bottom of the opening to prevent the air lock. The only cartridges I have that I know that do this are an older design. Maybe the new ones are better? Not sure. They don't have windows.
Good question, Wayne. The air has to flow in one direction through a small hole, the ink in another. I don't know why, but sometimes air gets stuck in there and blocks ink flow -- or vice-versa. At least I think that's happening. The print head runs dry, then you remove the cartridge and give it a tap, and you can see a lot of ink flow into the sponge, that seems like a pretty good indication, don't you think?In order to deliver ink from the ink chamber, how else does air get into the sealed ink chamber except by drawing through the vent, through the sponge, and through the ink delivery slot, WITHOUT creating a bubble at that location?
Mikling once mentioned that at one point Canon added a little groove at the bottom of the opening to prevent the air lock. The only cartridges I have that I know that do this are an older design. Maybe the new ones are better? Not sure. They don't have windows.