| 摘要 |
A printhead comprises a first ink chamber having an inlet port, to which ink from an ink supply source is supplied, a second ink chamber, to which the ink from the first ink chamber is supplied, a discharge orifice discharging ink from the second ink chamber, a first outlet port discharging fluid from the first ink chamber, a second outlet port discharging fluid from the second ink chamber, and an air-liquid separation unit which restricts liquid ejection and is provided at least either or both place between the first ink chamber and the first outlet port, or/and a place between the second ink chamber and the second outlet port, wherein flow resistance from the inlet port to the first outlet port is smaller than flow resistance from the inlet port to the second outlet port.
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