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HP OfficeJet Pro 6970 All-in-One Printer
Microsoft Windows 10 (64-bit)

Hi, I am finding that the cyan is not printing correctly.
I have tried cleaning the printheads, as well as some of the other suggestions of on the forums like changing the ink cartridges.
Sometimes it is fine, but other times it just stops printing. For example on the diagnostics page pattern 2 was fine, but then in pattern 3 the green bars are streaked green and yellow. On a different diagnostics bar the top half of the blue blocks are fine, but the bottom half goes streaky on both the blue and the black (the black turns a kind of pink).

If anyone has any suggestions how to fix this it would be greatly appreciated.

Thanks in advance.

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