A printer system for printing upon labels mounted on a web of release material, includes a stationary reel support upon which a supply reel and a take up reel are mounted for free rotation thereon. A printer is mounted adjacent a supply path extending from the supply reel to the take up reel, and a web...http://www.google.com.tw/patents/US4351690?utm_source=gb-gplus-share專利 US4351690 - Label printer system
