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Title: Printer doesn't recognize this ink
Review: These cartridges do not work in my Canon Pixma iP4000 printer. I've used other non-OEM ink with no problem but these don't work at all. The printer doesn't even recognize the Black, Yellow or Magenta at all. And the Cyan doesn't print consistently. I tried cleaning the heads, deep cleaning, taking cartridges out and putting back in, nothing works.
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