An inkjet printing system having a replaceable set of ink-related components which are installed together and replaced together as a single ink delivery system for each different color of ink. The set includes an ink printhead cartridge with an inlet port, an ink supply module, and a printhead service...http://www.google.de/patents/US6139135?utm_source=gb-gplus-sharePatent US6139135 - Inkjet printing with replaceable set of ink-related components (printhead/service module/ink supply) for each color of ink
