The invention provides a ink cartridge for supplying ink, including an ink pack formed from a flexible bag to seal liquid ink therein, a cartridge body having an ink pack housing therein, an extraction opening having a rubber plate into which a hollow ink extracting needle is inserted, an upper supporting...http://www.google.se/patents/US20010040612?utm_source=gb-gplus-sharePatent US20010040612 - INK CARTRIDGE
