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My HP 711 black ink is smudging and is not waterproof.

HP Recommended
HP DesignJet T520 24in
Microsoft Windows 10 (64-bit)

My HP 711 black ink is smudging and is not waterproof. The 711 colours are all stable. But the black smudges. As we produce posters that are used in the classroom where small fingers are sometime sweaty, this is a serious problem.

Any suggestions as to solutions, including alternative, waterproof black inks will be welcome.

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634 609 35 85
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HP Recommended



This printer will not supported with WaterProof type ink but you may use PaperProof paper and try to print best mode with PhotoTyp Paper. There no options...




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