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发明公开
CN103596765A 打印头和喷墨打印装置 有权

打印头和喷墨打印装置
摘要：
一种打印头，包括：能量产生元件、用于容纳液体的腔室和用于从所述腔室喷射液体的喷射口，从所述能量产生元件对所述腔室中的液体施加能量以从所述喷射口喷射液体；其中所述喷射口包括至少两个突起和外边缘部，所述突起在与液体喷射方向垂直的剖面中凸出到喷射口的内部且相对于液体喷射方向具有锥角θ1，使得在液体喷射时其间形成液体的弯液面，所述外边缘部相对于液体喷射方向具有锥角θ2，其中，锥角θ1和锥角θ2被限定为符合公式0°≤θ1≤10°和公式θ2>θ1。
摘要（英）：

A print head includes an energy generating element, a chamber for accommodating liquid, and an ejection opening for ejecting liquid from the chamber, thus applying the energy to the liquid in the chamber from the energy generating element to eject the liquid from the ejection opening, wherein the ejection opening includes at least two projections convex to an inside of the ejection opening in a cross section perpendicular to a liquid ejecting direction and has a tapered angle [theta]1 in regard to the liquid ejecting direction, enabling a meniscus of the liquid to be formed therebetween at the liquid ejecting time, and an outer edge portion has a tapered angle [theta]2 in regard to the liquid ejecting direction, wherein the tapered angles [theta]1 and [theta]2 are defined to meet a formula of 0 DEG <= [theta]1 <= 10 DEG and a formula of [theta]2 >= [theta]1.

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