DPI - dots per inch.
This means how many dots are in one inch. The higher the number - the more dots per inch - the better the resolution.
I'm assuming you mean outdoor durable vinyl printed banners such as the ones we offer at www.gobigbanners.com. If this is the case, then these are printed on a wide-format solvent ink or UV based ink...
Right if anyone is asking this question beware beaware your parents could kill you. I realy don't have a clue how to solve your qujestion!!
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