No, you can't make a copy of money, or a cheque, and for good reason.
Xerox isn't even allowed to allow a copier to do so.
It would be an absolute breeze to make a high res duplicate of a check and then cash the thing 2 or more times.
If you need a copy do so in BW and make it 150% or more, 75% or less the size and it might just work.