The Jackie Chan Adventures toon had similar papers in use occasionally... and (at least in theory) that's an American production focusing on Chinese culture. Not Japanese. Anyway, there was only one ep I can remember where they refered to them as anything, and the label they used was 'scroll'. As in, an immortal wandering around shooting pieces of paper out of his sleeves, shouting, "Energy scroll," and blasting gangsters, wherupon the scroll curls up and goes back up his sleeve.
Sadly, that's the limit of my experience... but JCA had some coool scrolls.