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    Canon pixma MP780 vs MX850 -which is best for ink refill + durability?

    My Canon MP780 has gotten more trouble than it's worth (likely to have purge unit issues as I found out in a reply to my last post, and then "Wrong Cartridge" a few days ago) so I went on the hunt for a "new" used one. Last time I looked around for one I couldn't find any, and now I found so...
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    Canon MP780 only prints black - have cleaned printhead - what else?

    Hi! My Canon MP780 had some streaks in all colors expect the black 3eBK, and after a little while, the colors stopped printing altogether. I did several cleaning/deep cleaning/printhead refreshing, all to no avail. I then tried to clean the printhead with Windex (soak for 5 hours and dry...
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    Problems refilling HP Officejet J4580 - black prints grey

    I am new to this forum. I really hope you guys can help me. When I refill the ink in my HP J4580 it seems to print OK, but it only seems to work for 1 or 2 refills. After that, the black cartridge prints grey, despite doing 3 or 4 or more cleaning cycles. I complained to HP and they sent me...
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