A method and apparatus for a promotional printer for use within a cashless enabled gaming machine or vending machine are disclosed. A promotional printer includes a coupon database describing a stack of coupons that are specified using a template based couponing printer language. A coupon is selected...http://www.google.com.tw/patents/US7812992?utm_source=gb-gplus-share專利 US7812992 - Method and apparatus for gaming promotional printer
