Ink refilling cartridge

摘要: An ink refilling cartridge comprises an containing portion, exhaust hole, guiding channel, supply portion and air communicating channel. hole control valve are arranged on the communicates with external air, is in open state when pressure difference between reaches a preset value, otherwise closed state. The includes plurality of chambers, sequentially passes chambers via channel to be conveyed portion. communicated chamber firstly consumed normal printing used for exhausting inside filled into cartridge. solves technical problem incapability removing bubbles near multi-cavity existing