arcueid_brunestud jpeg_artifacts melty_blood michael_roa_valdamjong neko_arc nrvnqsr_chaos riesbyfe_stridberg sion_eltnam_atlasia takeuchi_takashi tsukihime type-moon

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Look at the hair of Neko Arc at the top. Do you see the grid-like pattern?

I'm assuming the pattern to the right side of the scan is just there, and not a scanning artifact.
Probably wiser to remove 'screening' and replace it with 'JPEG_artifacts' Something is wrong with the scan, and I can't quite put my finger on it.
Hmm, no, I don't really notice anything. Is it anywhere else?
I've swapped the fault tag over.