| 摘要 |
A present invention provides a print head improving an ink refill speed to reduce the time from the end of ejection of ink droplets until the beginning of next ejection of ink droplets and maintaining the high quality of images obtained by printing. An ink jet print head has an ejection port portion 10 including a first ejection port portion 16 communicating with atmosphere, and a second ejection port portion 17 having a cross section which extends in a direction orthogonal to an ejecting direction and which is larger than that of the first ejection port portion 16; the second ejection port portion 17 is formed between a bubbling chamber 9 and the first ejection port portion 16. In the ink jet print head, the ejection port portion first axis 12 is located away from the ejection port portion second axis 14.
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