This invention provides a liquid container capable of stably supplying a liquid contained therein, a liquid using device, a printing apparatus, and a method of manufacturing the liquid container. In one preferred embodiment of this invention, a one-way valve used in an ink tank is constructed of a flexible...http://www.google.de/patents/US20040196341?utm_source=gb-gplus-sharePatent US20040196341 - Liquid container, liquid using device, printing apparatus, and method of manufacturing liquid container
