A replaceable ink reservoir for a printing system using pigmented ink. The ink reservoir includes a containment vessel, a body of reservoir material disposed in the vessel, a fluid interconnect opening formed in the vessel, and a screen disposed in the containment vessel and across the interconnect opening....http://www.google.de/patents/US6644796?utm_source=gb-gplus-sharePatent US6644796 - Fluid interconnect in a replaceable ink reservoir for pigmented ink
