| 摘要 |
An ink-jet recording head of the present invention has two kinds of nozzles discharging different volumes of ink-drops. Large nozzles discharging the larger ink-drops and small nozzles discharging the smaller ink-drops are disposed alternately along a side of a common liquid chamber. The opening area of the large nozzles is larger than that of the small nozzles. Flow paths communicating with the small nozzles are shorter than those communicating with the other nozzles. Since the smaller ink-drops are discharged at higher frequency than the larger ink-drops, printing speed in high-quality recording using mainly the smaller ink-drops is improved.
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