摘要 |
An ink cartridge ( 1 ) for supplying the ink in an ink reserving chamber ( 3 ) via an ink supply port ( 4 ) into a recording head ( 21 ) has a differential pressure valve mechanism ( 5 ) disposed between an ink flow port ( 7 ) and the ink supply port ( 4 ) in the ink reserving chamber ( 3 ), whereby the ink is supplied an adequate amount to the recording head ( 21 ) by opening or closing the differential pressure valve mechanism ( 5 ) in accordance with an ink pressure of the recording head ( 21 ). As a result, it is possible to supply the ink at a substantially constant pressure to the recording head without regard to the variation in the amount of ink or the movement of the carriage. |