In an ink jet printer, a recording unit in which an ink cartridge is detachably mounted has a cartridge removal preventing member so that the ink cartridge is prevented from being carelessly removed therefrom, and a moving mechanism is provided which, when the recording unit is mounted on the carriage,...http://www.google.fr/patents/US6170940?utm_source=gb-gplus-shareBrevet US6170940 - Ink jet type recording unit, and printer with it
