An ink jet recording apparatus comprises a mounting portion on which an ink jet cartridge is detachably mounted, the cartridge having a connector and a recording head portion for discharging ink to perform image recording. The mounting portion has a body connector associated therewith for electrically...http://www.google.de/patents/US5550570?utm_source=gb-gplus-sharePatent US5550570 - Ink jet cartridge mounting device and method
