A non-refillable ink jet cartridge is rendered user refillable in a convenient manner. Hewlett-Packard ink jet cartridge #51626A is modified by sealing the vent hole at the base of the cartridge with a pressure sensitive adhesive tape, and removing the air tight ink fill plug at the top of the cartridge....http://www.google.fr/patents/US5329294?utm_source=gb-gplus-shareBrevet US5329294 - User refillable ink jet cartridge and method for making said cartridge
User refillable ink jet cartridge and method for making said cartridge
