Try searching for "till-roll printer" or "PoS printer" (ie Point-of-Sale)

eg, I found: http://www.pos.epson.co.uk/pos-printer/index.htm

I think that Citizen are also popular in this market?

If that's not the kind of printer you want, then give a fuller description of your requirement!

Again, the clearer amd more complete you make your posts, the more likely you are to get useful responses!