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    PRINTER JETTING MECHANISM AND PRINTER EMPLOYING THE PRINTER JETTING MECHANISM
    3.
    发明申请
    PRINTER JETTING MECHANISM AND PRINTER EMPLOYING THE PRINTER JETTING MECHANISM 有权

    公开(公告)号：US20230098918A1

    公开(公告)日：2023-03-30

    申请号：US17448997

    申请日：2021-09-27

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

    Inventor： David K. Biegelsen ,  Robert Anthony Street

    IPC: B22D23/00 ,  B33Y30/00

    Abstract: A three-dimensional (“3D”) printer. The 3D printer comprises: a feeder mechanism for advancing a print material; a plurality of ejector conduits arranged in an array, each ejector conduit comprising a first end positioned to accept the print material from the feeder mechanism, a second end comprising an ejector nozzle, and a passageway defined by an inner surface of the ejector conduit for allowing the print material to pass through the ejector conduit from the first end to the second end, the ejector nozzle comprising a first electrode and a second electrode, at least one surface of the first electrode being exposed in the passageway and at least one surface of the second electrode being exposed in the passageway; a current pulse generating system in electrical contact with the ejector nozzle of each of the plurality of ejector conduits, the current pulse generating system being configured to flow an electrical current between the first electrode and the second electrode to provide sufficient thermal expansion so as to eject an electrically conductive print material in the event the electrically conductive print material is positioned in the ejector nozzle; and a positioning system for controlling the relative position of the array with respect to a print substrate in a manner that would allow the print substrate to receive print material jettable from the ejector nozzle of each of the plurality of ejector conduits during operation of the 3D printer.

    Micro assembler with fine angle control
    4.
    发明授权
    Micro assembler with fine angle control 有权

    公开(公告)号：US11615976B2

    公开(公告)日：2023-03-28

    申请号：US17690485

    申请日：2022-03-09

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

    Inventor： JengPing Lu ,  Eugene M. Chow ,  David K. Biegelsen

    IPC: H01L21/68 ,  H01L21/683

    Abstract: First and second chiplets are positioned along a surface to respectively cover first and second electrodes. The first electrode is activated to cause an attraction force between the first electrode and the first chiplet. The second electrode is deactivated allowing the second chiplet to rotate on the surface. While the first electrode is activated and the second electrode is deactivated, a rotation field is applied to cause the second chiplet to be oriented at a desired orientation angle, the first chiplet being prevented from rotating by the attraction force.

    Fountain jet image formation on charged image surface
    6.
    发明授权
    Fountain jet image formation on charged image surface 有权

    公开(公告)号：US11340535B1

    公开(公告)日：2022-05-24

    申请号：US17201583

    申请日：2021-03-15

    Applicant: Palo Alto Research Center Incorporated

    Inventor： David K. Biegelsen ,  JengPing Lu

    IPC: G03G15/10 ,  G03G15/02

    Abstract: A system and method for creating a fountain solution pattern for digital imaging, can include a charge image bearing surface bearing a charge image, an array of insulated channels, wherein a fountain solution can enter and fills the array of insulated channels by capillary action to a ledge region of the insulated channels in the array of insulated channels, and a scorotron that charges a surface of the fountain solution in the array of insulated channels. The array of insulated channels can be moved into proximity with the charge image on the charge image bearing surface of a digital printer, such that a fountain solution pattern can be developed on the charge image bearing surface with a measured amount of the fountain solution.

    Electrostatic polymer aerosol deposition and fusing of solid particles for three-dimensional printing
    7.
    发明授权
    Electrostatic polymer aerosol deposition and fusing of solid particles for three-dimensional printing 有权

    公开(公告)号：US10919215B2

    公开(公告)日：2021-02-16

    申请号：US15683531

    申请日：2017-08-22

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

    Inventor： David Mathew Johnson ,  Scott A. Elrod ,  David K. Biegelsen ,  Victor Alfred Beck

    IPC: B29C64/141 ,  B33Y10/00 ,  B29C64/205 ,  B33Y30/00 ,  B29C64/209 ,  B05D1/04

    Abstract: An additive manufacturing system has an aerosol generator to aerosolize a powder, a deposition surface, a surface charging element to apply a blanket charge to the deposition surface, a charging print head to selectively remove portions of the blanket charge from the deposition surface, and a transport system to transport the aerosol powder from the aerosol generator to the deposition surface, the transport system having an aerosol charging element to apply charge opposite of the blanket charge to the aerosol powder. An additive manufacturing process includes creating an aerosol from a powder at a spray generator, charging the aerosol to produce a charged aerosol having a first charge, forming a blanket charge on a deposition surface having a second charge of an opposite polarity from the first charge, selectively removing regions of the blanket charge, and transporting the charged aerosol to the charged regions to form structures on the charged regions from the charged aerosol.

    Transparent optical coupler active matrix array
    8.
    发明授权
    Transparent optical coupler active matrix array 有权

    公开(公告)号：US10397529B2

    公开(公告)日：2019-08-27

    申请号：US15582296

    申请日：2017-04-28

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

    Inventor： Jengping Lu ,  Patrick Y. Maeda ,  Sourobh Raychaudhuri ,  David K. Biegelsen ,  Eugene M. Chow

    IPC: H01L27/12 ,  H04N5/33 ,  H04N9/04 ,  H01L31/112 ,  G02B27/14 ,  G01N21/88 ,  G02B27/60

    Abstract: A backplane has an array of output terminals arranged on an output surface of the backplane, and an array of solid state optical switches, each optical switch corresponding to one of the output terminals, wherein the solid state optical switches are responsive to light of a control wavelength and are transparent to light of a sensing wavelength, wherein the backplane is of a material transparent to light of a sensing wavelength different from the control wavelength. An optical system includes a backplane having an array of optocouplers, a projector to generate light of a control wavelength to which the optocouplers are responsive, optics to direct the control light onto the array of optocouplers on a backplane, an imaging system responsive to light of a sensing wavelength, wherein the backplane is at least partially transparent to the sensing wavelength.

    Imaging system with electrophotographic patterning of an image definition material and methods therefor
    10.
    发明授权
    Imaging system with electrophotographic patterning of an image definition material and methods therefor 有权
    具有图像定义材料的电子照相图案的成像系统及其方法

    公开(公告)号：US09551934B2

    公开(公告)日：2017-01-24

    申请号：US15048930

    申请日：2016-02-19

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

    Inventor： Janos Veres ,  David K. Biegelsen ,  Chu-heng Liu

    IPC: G03F7/20 ,  B41F7/24 ,  G03G17/02

    CPC classification number: G03F7/20 ,  B41F7/24 ,  G03G17/02

    Abstract: A system comprises an electrophotographic subsystem, a transfer subsystem, an imaging member, and an inking subsystem. The electrophotographic subsystem comprises a photoreceptor, a charging subsystem, an exposure subsystem, and a development subsystem. In operation, the photoreceptor is charged areawise. An exposure pattern is formed by the exposure subsystem on the surface of the charged photoreceptor to thereby write a latent charge image onto the photoreceptor surface. The image is developed with an image definition material, such as a dampening fluid. The image definition material forms a positive pattern of the image to be printed. The image pattern is then transferred to the reimageable surface. The transferred pattern is then developed by selectively applying an ink over regions of image definition material. The inked image may be transferred to a substrate.

    Abstract translation: 系统包括电子照相子系统，传输子系统，成像构件和着墨子系统。 电子照相子系统包括感光体，充电子系统，曝光子系统和开发子系统。 在操作中，感光体面积充电。 通过曝光子系统在带电感光体的表面上形成曝光图案，从而将潜像写入感光体表面。 图像用诸如润版液的图像定义材料显影。 图像定义材料形成要打印的图像的正图案。 然后将图像图案转移到可再成像的表面。 然后通过在图像定义材料的区域上选择性地施加墨水来显影转印图案。 着墨的图像可以被转印到基底上。

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