An ink tank holding member for holding ink tanks containing ink is made freely attachable and detachable, at the same time, having ink lead-out members for leading out ink from ink supply ports provided for the ink tanks. For this ink tank holding member, gap complementary members are made mountable...http://www.google.ca/patents/US6631978?utm_source=gb-gplus-sharePatent US6631978 - Ink tank holding member and ink jet cartridge provided with such holding member
