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    Canon Pixma mx870 print head unclogging

    Thanks very much for your help! The gaskets of the print head cartridge male fittings look good. My printer is only 2-3 years old and not used much. Nor have I seen any signs of leakage from those fittings. I do not know how to test the purge unit for operation by flooding the parking pad...
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    Canon Pixma mx870 print head unclogging

    I got my "new, original Canon" carts and stuck them in my print head, which I had soaked for almost a week in straight original Windex. Initial testing shows that black and magenta are a little streaky and maybe not as dark as they should be--I'm not sure. In the very first test, a tiny bit of...
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    Canon Pixma mx870 print head unclogging

    How do I know if the Windex is getting all the way inside the print head? The Windex doesn't seem to go through the membranes on top of the print head nozzles. I have the print head soaking in Windex with the print head jets facing down. Does the Windex get all the way up inside the jets and...
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    Canon Pixma mx870 print head unclogging

    I ordered a new set of "Genuine Original OEM Canon ... Cartridges," which will take a week or more to get here. In the meantime, I am soaking my print head in about 1/4" Original Windex in a flat, plastic container with a fairly airtight lid on top and some tissue on the bottom under the print...
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    Canon Pixma mx870 print head unclogging

    Thanks very much for your help. Sorry for the delay. I tried to upload a nozzle check, but it wouldn't work so I put it on my website at http://kye20121.net/prntrnozchk.jpg. I am surprised that some magenta shows on this nozzle check. Usually there's just black and no colors at all. The...
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    Canon Pixma mx870 print head unclogging

    As I said before, Magic Inkjet Flush (MIF) claims that their product does a great job of unclogging print heads, but not if you try Windex first. I tried heated water with Windex once, but that didn't solve the problem. I can keep trying water and Windex, but some people, including MIF, don't...
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    Canon Pixma mx870 print head unclogging

    This problem seems to have begun when I started using River Styx bulk (water-based, dye) ink, but I don't think the ink is the problem because I read that dye ink has no particles to clog print heads. Cutting to the chase, is there any solution, such as propylene glycol ether (PGE), which will...
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