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1.发明授权Liquid ejector which uses a high-order ultrasonic wave to eject ink droplets and printing apparatus using same 失效使用高阶超声波喷射墨滴的液体喷射器和使用其的打印装置
公开(公告)号：US6155671A
公开(公告)日：2000-12-05
申请号：US958981
申请日：1997-10-28
CPC分类号： B41J2/14008
摘要： The particle diameter of droplets is controlled without improvements on a nozzle plate. An ultrasonic wave causes a radiation pressure to be intermittently applied to an opening in a cycle having a period shorter than the fundamental vibration period of a liquid surface in the opening. A high-order standing wave is then generated at the liquid surface in the opening to cause a plurality of droplets to be emitted simultaneously. Since the plurality of droplets are simultaneously emitted from a plurality of mounds of the high-order standing wave, the droplets have a diameter smaller than the diameter of the opening and are emitted vertically upwardly. The diameter of the droplets is controlled by the order of the high-order standing wave to be generated. The order of the standing wave is increased by shortening the period for which the radiation pressure is applied to the opening.
摘要翻译： 在喷嘴板上没有改进地控制液滴的粒径。 超声波使得在比开口中的液面的基本振动周期短的周期内，对开口间歇地施加放射线压力。 然后在开口中的液面处产生高阶驻波，以使多个液滴同时发射。 由于多个液滴同时从高阶驻波的多个丘发射，所以液滴的直径小于开口的直径，并且垂直向上发射。 液滴的直径由要产生的高阶驻波的顺序控制。 通过缩短对开口施加辐射压力的周期来增加驻波的顺序。
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2.发明授权
公开(公告)号：US6154235A
公开(公告)日：2000-11-28
申请号：US44792
申请日：1998-03-20
CPC分类号： B41J2/14 , B41J2/14008
摘要： A liquid ejector increases the density of acoustic energy to eject droplets efficiently. Acoustic waves are introduced in generally planar form from a piezoelectric transducer into a liquid ink in a reservoir and are reflected from a reflecting wall of the reservoir. The reflecting wall defines a parabola in cross section. An ejection opening is located near a focal point of the parabola, opposite the transducer. The acoustic waves focus at the ejection opening, increasing the density of the acoustic energy in the ink at the ejection opening. Thus, ink droplets are ejected efficiently from the ejection opening.
摘要翻译： 液体喷射器增加声能的密度以有效地喷射液滴。 声波以大致平面形式从压电换能器引入到储存器中的液体墨水中，并从储存器的反射壁反射。 反射壁在横截面上形成抛物线。 喷射口位于抛物线的焦点附近，与换能器相对。 声波在喷射口处聚焦，增加喷射口处油墨中声能的密度。 因此，墨滴从喷射口有效地喷出。
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公开(公告)号：US4730998A
公开(公告)日：1988-03-15
申请号：US908636
申请日：1986-09-18
申请人： Masayuki Kakuda , Etsuo Morishita , Hiromu Narumiya , Masahiro Sugihara , Tsutomu Inaba , Tadashi Kimura
发明人： Masayuki Kakuda , Etsuo Morishita , Hiromu Narumiya , Masahiro Sugihara , Tsutomu Inaba , Tadashi Kimura
摘要： A scroll-type apparatus having a main journal bearing which journals the drive shaft of the apparatus and is capable of pivoting by small angles with two degrees of freedom. The main journal bearing comprises three or more arcuate pads whose inner surfaces journal the drive shaft and which are pivotably supported by a stationary main bearing housing. In a preferred embodiment, each of the pads has a spherical protrusion and two rotation-preventing pins secured to its back surface. The protrusions contact the inner surface of the main bearing housing and pivotably support the pads, while the rotation-preventing pins are inserted into grooves formed on the inner surface of the main bearing housing. When a load is applied to the drive shaft causing it to tilt, the pads of the main journal bearing can tilt along with the drive shaft by pivoting about the points of contact between the spherical protrusions and the inner surface of the main bearing housing, thereby preventing edge loading of the main journal bearing.
摘要翻译： 一种涡旋式装置，具有主轴颈轴承，该主轴颈轴承可以使装置的驱动轴伸缩并且能够以两个自由度的小角度摆动。 主轴颈轴承包括三个或更多个弧形垫，其内表面以驱动轴为中心，并由固定的主轴承壳体可枢转地支撑。 在优选实施例中，每个垫具有球形突起和固定到其后表面的两个防旋转销。 突起接触主轴承壳体的内表面并可枢转地支撑垫，同时将防旋转销插入形成在主轴承壳体的内表面上的槽中。 当驱动轴施加负载使其倾斜时，主轴颈轴承的垫可以通过围绕球形突起与主轴承壳体的内表面之间的接触点枢转而与驱动轴一起倾斜，由此 防止主轴颈轴承的边缘加载。
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