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(11) | EP 0 936 070 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Liquid ejecting method and liquid ejecting head |
| (57) A liquid ejecting method using a liquid ejecting head having electrothermal transducer
elements for generating thermal energy sufficient to create bubbles in liquid and
ejection outlets disposed opposed to the electrothermal transducer elements which
are arranged at a density not less than 300 per 25.4mm in a line, the liquid ejection
head also having liquid flow paths in fluid communication with the ejection outlets,
respectively, wherein the bubble generated by the thermal energy generated by the
electrothermal transducer element is brought into communication with ambience while
an internal pressure of the bubble is less than an ambient pressure, and wherein droplets
having volumes not more than 15x10-15m3 are ejected at a frequency not less than 7kHz, said method includes the improvement
wherein the liquid flow path of the liquid ejecting head has a height not less than
6µm, and a distance between an upper surface and a lower surface of the ejection outlet
is not more than one half of a minimum opening distance through a center of the ejection
outlet. |