Crossword Genius

Kanji regularly written the wrong way round but paper never refused it (3)

Ross

I believe the answer is:

ink

I'm a little stuck... Click here to teach me more about this clue!

'kanji' is the definition.
Both the definition and answer are singular nouns.
Maybe there's an association between them I don't understand?

'regularly written the wrong way round but paper never refused it' is the wordplay.
I cannot really see how this works, but
'way' could be 'n' (Compass direction - North) and 'n' is found in the answer.
'paper' could be 'i' (UK newspaper) and 'i' is found in the answer.
A single letter 'k' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for ink that I've seen before include "See 9" , "It is ejected by cuttlefish" , "Pen fluid" , "Printer's medium" , "Cuttlefish defence" .)

I've seen this clue in The Irish Times.
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