A reservoir for an ink supply for an ink-jet printer is provided with a refill port through which it can be refilled. The reservoir may be coupled to a variable volume chamber via a check valve which allows the flow of ink from the reservoir to the chamber and limits the flow of ink from the chamber...http://www.google.de/patents/US6764169?utm_source=gb-gplus-sharePatent US6764169 - Method and apparatus for providing ink to an ink jet printing system
Method and apparatus for providing ink to an ink jet printing system
