An inkjet printer that has a printer body, a printhead cartridge for installation in the printer body, and an ink cartridge for supplying the printhead cartridge with ink. The ink cartridge has external formations for engaging a first complementary formation on the printhead cartridge and a second complementary...http://www.google.com.au/patents/US8007089?utm_source=gb-gplus-sharePatent US8007089 - Printer with printhead cartridge and printer body that simultaneously engage an ink cartridge
