An ink supply unit including at least one ink storage chamber for holding ink for supply to a portable ink jet printing arrangement, the ink supply unit including a series of spaced apart baffles configured so as to reduce the acceleration of the ink within the unit as may be induced by movement of the...http://www.google.de/patents/US6508546?utm_source=gb-gplus-sharePatent US6508546 - Ink supply arrangement for a portable ink jet printer
