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Funny story comes to my mind, I bought my daughter Instax because I was pretty sure it is digital, i.e. has a printer inside. However, I had trouble finding the resolution of the printer there... When we got it, I understood this is real photography paper, not a printer at all!

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If you got a recent digital one it actually does print on the photography paper. I'm guessing it works like a line scanner but in reverse, using color LEDs to "print" light dots in high resolution on the paper.

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