PROBLEM TO BE SOLVED: To enhance ink ejection performance by an arrangement wherein a specified relation is satisfied between the time required for a generated bubble to have a maximum volume and the time to be elapsed before the bubble having maximum volume disappears within a range where ink moves through process of generation, growth, contraction and extinction of bubble. ;SOLUTION: A bubble 20 generated at a heater section grows and contracts in the direction of arrow A after maximum volume is reached. Consequently, meniscus retracts as shown by arrow B on the orifice side. Besides, ink 10 moves in the direction of arrow C from the ink supply side on the right through action incident to contraction of the bubble 20. Movement of the meniscus or the ink 10 depends significantly on the contraction rate of the bubble 20. Generation and contraction rate of the bubble 20 is regulated such that a relation, 1≤td/ti≤3 is satisfied between the time ti required for the bubble 20 to have a maximum volume after generation and the time td to be elapsed before the bubble having maximum volume disappears.;COPYRIGHT: (C)1999,JPO
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机译：解决的问题：通过在产生墨水的气泡达到最大体积所需的时间与在墨水最大范围内的气泡消失之前所经过的时间之间满足规定的关系的结构，来提高墨水的喷射性能。通过泡沫的产生，增长，收缩和消失的过程。 ;解决方案：达到最大体积后，在加热器部分产生的气泡20会沿箭头A的方向生长和收缩。因此，弯液面如孔口侧的箭头B所示缩回。此外，墨水10通过入射到气泡20的收缩的动作而从右侧的墨水供应侧沿箭头C的方向移动。弯液面或墨水10的运动很大程度上取决于气泡20的收缩率。气泡20的收缩率被调节，使得在时间t i 之间满足1≤t d / t i ≤3气泡20产生后需要最大的体积以及气泡消失之前要经过的时间t d 所需的时间。COPYRIGHT：（C）1999，JPO
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