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公开(公告)号：US5389956A
公开(公告)日：1995-02-14
申请号：US931804
申请日：1992-08-18
CPC分类号： B41J2/14008
摘要： Techniques for improving droplet uniformity in acoustic ink printing. Row to row variations in an average droplet characteristic are reduced by controlling the electric power applied to the droplet ejectors of the individual rows. By applying the proper power to each row, the average droplet characteristic from the individual rows are made substantially. Another technique varies the efficiency of the individual droplet ejectors by physically trimming (such as with a laser) one or more of its components. Trimming may be performed on a droplet ejector's transducer, varactor, one or more associated resistors, or one or more capacitors. Yet another technique controls droplet ejector efficiency by electrically controlling the capacitance of a varactor associated with each droplet ejector, and thus each droplet ejector's efficiency. The voltage applied to each varactor may be controlled as a function of its column (to improve column to column uniformity), row (to improve row to row uniformity) or as a function of its column and row (to control the efficiency of the individual droplet ejector).
摘要翻译： 提高声墨印刷液滴均匀性的技术。 通过控制施加到各行的液滴喷射器的电力来减小平均液滴特性中的行排列变化。 通过对每行施加适当的功率，基本上实现来自各行的平均液滴特性。 另一种技术通过物理地修整（例如用激光）其一个或多个组件来改变各个液滴喷射器的效率。 可以在液滴喷射器的换能器，变容二极管，一个或多个相关联的电阻器或一个或多个电容器上执行修整。 另一种技术通过电控制与每个液滴喷射器相关联的变容二极管的电容以及因此每个液滴喷射器的效率来控制液滴喷射器的效率。 施加到每个变容二极管的电压可以作为其列的函数来控制（以提高列到列的均匀性），行（以提高行到行均匀性）或者作为其列和行的函数（以控制个体的效率 液滴喷射器）。
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2.发明授权Surface ripple wave diffusion in apertured free ink surface level controllers for acoustic ink printers 失效表面波纹扩散在无孔墨水表面液位控制器的声学墨水打印机
公开(公告)号：US5216451A
公开(公告)日：1993-06-01
申请号：US815002
申请日：1992-12-27
申请人： Eric G. Rawson , Scott A. Elrod , Babur B. Hadimioglu , Calvin F. Quate , Butrus T. Khuri-Yakub
发明人： Eric G. Rawson , Scott A. Elrod , Babur B. Hadimioglu , Calvin F. Quate , Butrus T. Khuri-Yakub
IPC分类号： B41J2/14
CPC分类号： B41J2/14008
摘要： The free ink surface levels of acoustic ink printers are controlled by cap structures that have substantially non-retroreflective aperture configurations. The non-retroreflective configurations of the apertures of these cap structures cause diffusive scattering or directional deflection of the reflected surface ripple waves, thereby significantly reducing the time that is required for the oscillatory perturbations, which are caused by reflection of the surface ripple waves that are generated during the droplet ejection process, to dissipate to a negligibly low amplitude in the critical local areas of the ejection sites. This, in turn, increases the droplet ejection rates at which printers having such cap structures can be operated asynchronously.
摘要翻译： 声学墨水打印机的自由墨水表面水平由具有基本上非回射孔径配置的盖结构控制。 这些盖结构的孔的非回射结构引起反射表面纹波的漫射散射或方向偏转，从而显着减少振荡扰动所需的时间，这是由表面波纹波的反射引起的 在液滴喷射过程中产生，以在喷射位置的关键局部区域中消散到可忽略的低振幅。 这又增加了具有这种帽结构的打印机可以异步操作的液滴喷射速率。
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公开(公告)号：US5028937A
公开(公告)日：1991-07-02
申请号：US358752
申请日：1989-05-30
申请人： Butrus T. Khuri-Yakub , Scott A. Elrod , Calvin F. Quate , Eric G. Rawson , Babur B. Hadimioglu
发明人： Butrus T. Khuri-Yakub , Scott A. Elrod , Calvin F. Quate , Eric G. Rawson , Babur B. Hadimioglu
CPC分类号： B41J2/14008 , B41J2002/14322
摘要： In accordance with the present invention, an acoustic ink printer comprises a pool of liquid ink having a free surface in intimate contact with the inner face of a perforated membrane. The printer addresses all pixel positions within its image field via substantially uniform, relatively large diameter apertures which extend through the membrane on centers that are aligned with respective ones of the pixel positions. In operation, one or more focused acoustic beams selectively eject individual droplets of ink from the ink menisci that extend across the apertures. Accordingly, the membrane is positioned and the bias pressure that is applied to the ink is selected so that the menisci essentially remain within the focal plane of such beam or beams.
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公开(公告)号：US5339101A
公开(公告)日：1994-08-16
申请号：US815730
申请日：1991-12-30
CPC分类号： B41J2/14008 , B41J2002/14322
摘要： A printhead for an acoustic ink printer has a piezoelectric transducer on one surface of a substrate. A layer of a dielectric material is provided on the surface of the transducer away from the substrate. A Fresnel lens is formed in the surface of the dielectric layer away from the transducer, for focusing sound energy near the surface of a body of ink adjacent the dielectric layer. Thus the transducer and lens are both on the same side of the substrate. A pit may be formed in the substrate under the transducer. The transducer may be a body of piezoelectric material sandwiched between a pair of electrodes, the lower electrode of which has a thickness that is a quarter wave at the excitation frequency of the transducer. An anti-reflective coating may be provided on the lower surface of the substrate, with a body of an absorptive material abutting the anti-reflective layer, or an absorptive material having an acoustic impedance approximately matching that of the substrate may be coated on the lower surface of the substrate.
摘要翻译： 用于声学墨水打印机的打印头在基板的一个表面上具有压电换能器。 介电材料层设置在远离基板的换能器表面上。 在电介质层的表面上形成菲涅尔透镜，远离换能器，用于将声能聚焦在靠近电介质层的墨体表面附近。 因此，传感器和透镜都在基板的相同侧上。 可以在换能器下方的基板中形成凹坑。 换能器可以是夹在一对电极之间的压电材料体，其下电极具有在换能器的激发频率下的四分之一波长的厚度。 可以在基板的下表面上设置抗反射涂层，吸收材料的主体邻接抗反射层，或者具有与基板大致匹配的声阻抗的吸收材料可以涂覆在下部 基板的表面。
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公开(公告)号：US5268610A
公开(公告)日：1993-12-07
申请号：US815731
申请日：1991-12-30
CPC分类号： B06B1/067 , B41J2/14008
摘要： An acoustic ink printer transducer comprising a piezoelectric layer positioned between two suitable electrode materials. Also, a method for obtaining second harmonic operations from an acoustic ink printer transducer to enable ejection of a number of different ink droplet sizes from the acoustic ink printer thereby facilitating grey scale printing.
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6.发明授权Multi-discrete-phase Fresnel acoustic lenses and their application to acoustic ink printing 失效多分散相菲涅尔声透镜及其在声学油墨印刷中的应用
公开(公告)号：US5041849A
公开(公告)日：1991-08-20
申请号：US456409
申请日：1989-12-26
CPC分类号： B41J2/14008 , G10K11/30 , B41J2002/14322
摘要： Acoustic radiators which are focused diffractively by multi-discrete-phase binary Fresnel lenses are provided for applications, such as acoustic ink printing. Standard semiconductor integrated circuit techniques are available for fabricating such lenses in compliance with design specifications having relatively tight tolerances, including specifications for integrated lens arrays demanding substantial precision in the relative spatial positioning of several lenses. The diffractive performance of these lenses simulate concave refractive lenses, even though the lenses preferably have generally flat geometries. To that end, the lenses advantageously are defined by patterning acoustically flat surfaces, such as an acoustically flat face of a substrate or, better yet, an acoustically flat face of a layer of etchable material which is grown or otherwise deposited on an acoustically flat surface of an etch resistant substrate.
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公开(公告)号：US5565113A
公开(公告)日：1996-10-15
申请号：US245323
申请日：1994-05-18
CPC分类号： B41J2/14008 , B41J2/145 , B41J2002/14387 , B41J2002/14483
摘要： A material deposition head having lithographically defined ejector units. Beneficially, each ejector unit includes a plurality of lithographically defined droplet ejectors. Furthermore, methods of fabricating such lithographically defined material deposition heads are also described.
摘要翻译： 具有光刻定义的喷射器单元的材料沉积头。 有利地，每个喷射器单元包括多个光刻定义的液滴喷射器。 此外，还描述了制造这种光刻定影材料沉积头的方法。
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公开(公告)号：US5436444A
公开(公告)日：1995-07-25
申请号：US53687
申请日：1993-04-29
申请人： Eric G. Rawson
发明人： Eric G. Rawson
CPC分类号： A61B5/6892 , A61B5/1126 , A61B5/113 , A61B5/7415 , G01P13/00
摘要： A motion monitor which produces audible sound representative of motions of a subject or object being monitored, including a carrier, an optical fiber carried by the carrier, a laser source for injecting a laser beam in the optical fiber to produce a speckle light pattern at the output of the optical fiber, a photodetector for producing an output signal representative of modal noise developed in the optical fiber due to physical movement of the fiber, an amplifier for amplifying the output of the photodetector, and a loudspeaker which converts the amplified signals to audible sound representative of the modal noise at the fiber output. Optionally, the signals produced by the photodetector are shifted to a higher frequency range, e.g., the 500-700 Hz range, thereby to enable use of conventional inexpensive electronics and efficient loudspeakers. In one embodiment involving monitoring of a person, the frequency shifted output of the photodetector is transmitted to a remote location for remote monitoring of movements of the person. In another embodiment, the loudspeaker is mounted on the carrier and produces sound mimicking movement of the subject or object to which the carrier is attached.
摘要翻译： 一种运动监视器，其产生表示被监视对象或物体的运动的声音，包括载体，由载体承载的光纤，用于在光纤中注入激光束以在该光纤中产生斑点光图案的激光源 光纤的输出，用于产生表示由于光纤的物理移动而在光纤中产生的模式噪声的输出信号的光电检测器，用于放大光电检测器的输出的放大器和将放大的信号转换成可听见的扬声器 声音代表了光纤输出的模态噪声。 可选地，由光电检测器产生的信号被转移到更高的频率范围，例如500-700Hz的范围，从而能够使用传统廉价的电子设备和有效的扬声器。 在涉及人的监视的一个实施例中，光电检测器的频移输出被传送到远程位置，用于远程监视人的移动。 在另一个实施例中，扬声器安装在载体上并且产生模仿运动员所附着的被摄体或物体的声音。
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9.发明授权
公开(公告)号：US4155620A
公开(公告)日：1979-05-22
申请号：US833781
申请日：1977-09-15
申请人： Eric G. Rawson
发明人： Eric G. Rawson
CPC分类号： G02B26/12 , G02B26/0816
摘要： An optical scanning system in which a focused light beam is scanned across an image plane by a rotating or reciprocating scan mirror and wherein the field curvature of the focused light beam is substantially reduced by moving the point of intersection between the optic axis of the scanning light beam and the scan mirror as a function of the rotation or reciprocation of the scan mirror and wherein movement of that point of intersection is controlled by having the distance R between the mirror and its point of rotation or reciprocation and the distance h between the image plane and the point of intersection of the optic axis of the scanning beam and the scan mirror approximate the relationship R=2.sqroot.2h. In the case of the scan mirror having a reciprocating movement, the optical scanning system compensates for non-linearity in the sweep of the scanning light beam across the image plane by utilizing a non-linear lever system to reciprocate the scan mirror.
摘要翻译： 一种光学扫描系统，其中聚焦光束通过旋转或往复扫描反射镜在图像平面上扫描，并且其中聚焦光束的场曲率通过移动扫描光的光轴之间的交点而大大减小 光束和扫描镜作为扫描镜的旋转或往复运动的函数，并且其中通过使反射镜与其旋转点或往复运动之间的距离R和像面之间的距离h来控制该交点点的运动 并且扫描光束和扫描镜的光轴的交点与R = 2 2ROOT 2h的关系近似。 在扫描反射镜具有往复运动的情况下，光学扫描系统通过利用非线性的杠杆系统使扫描镜往复运动来补偿扫描光束跨越图像平面的扫描的非线性。
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公开(公告)号：US4687284A
公开(公告)日：1987-08-18
申请号：US646548
申请日：1984-09-04
IPC分类号： G02B6/28
CPC分类号： G02B6/2856
摘要： A biconically tapered passive star optical coupler has mutually exclusive input and output optical fibers, so that optical power injected into any one of the input fibers is relatively uniformally distributed to all of the output fibers.
摘要翻译： 双锥形无源星形光耦合器具有相互排斥的输入和输出光纤，使得注入任何一个输入光纤的光功率相对均匀地分布到所有输出光纤。
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