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    PRINTHEAD DIES MOLDED WITH NOZZLE HEALTH SENSOR
    51.
    发明申请
    PRINTHEAD DIES MOLDED WITH NOZZLE HEALTH SENSOR 有权
    带喷头健康传感器的头部模具

    公开(公告)号：US20160339695A1

    公开(公告)日：2016-11-24

    申请号：US15111878

    申请日：2014-01-30

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Chien-Hua CHEN ,  Michael W. Cumbie ,  Brett E. Dahlgren

    IPC: B41J2/14 ,  B41J2/16

    CPC classification number: B41J2/165 ,  B41J2/14032 ,  B41J2/1404 ,  B41J2/1433 ,  B41J2/145 ,  B41J2/1603 ,  B41J2/1637 ,  B41J2/16579 ,  B41J2002/14354

    Abstract: In an implementation, a printhead includes a printhead die molded into a molding. The die has a front surface exposed outside the molding to dispense fluid drops through nozzles and an opposing back surface covered by the molding except at a channel in the molding through which fluid may pass directly to the back surface. The die also has a nozzle health sensor molded into the molding to detect defective nozzles in the printhead die.

    Abstract translation: 在一个实施方案中，打印头包括模制成模制品的打印头模具。 模具具有暴露在模制件外部的前表面，以通过喷嘴分配液滴，以及由模制物覆盖的相对后表面，除了模制品中的通道之外，流体可以通过该通道直接通过背面。 模具还具有模制到模制件中的喷嘴健康传感器，以检测打印头芯片中的有缺陷的喷嘴。

    Fluid ejection apparatuses including a substrate with a bulk layer and a epitaxial layer
    52.
    发明授权
    Fluid ejection apparatuses including a substrate with a bulk layer and a epitaxial layer 有权
    流体喷射装置包括具有本体层和外延层的衬底

    公开(公告)号：US09457571B2

    公开(公告)日：2016-10-04

    申请号：US14890551

    申请日：2013-06-28

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Ning Ge ,  Chaw Sing Ho ,  Adam L. Ghozeil ,  Michael W. Cumbie

    IPC: B41J2/145 ,  B41J2/16 ,  B41J2/14

    CPC classification number: B41J2/145 ,  B41J2/14 ,  B41J2/14016 ,  B41J2/14129 ,  B41J2/1603 ,  B41J2/162 ,  B41J2/1626 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2202/13

    Abstract: Examples of fluid ejection apparatuses and methods for making fluid ejection apparatuses are described. An example method may include forming a fluid feed slot in a bulk layer of a substrate, forming a plurality of ink feed channels in at least an epitaxial layer of the substrate, each of the ink feed channels fluidically coupled to the fluid feed slot, and forming a plurality of drop generators over the substrate such that the epitaxial layer of the substrate is between the plurality of drop generators and the bulk layer and such that the each of the drop generators is fluidically coupled to the fluid feed slot by at least one of the ink feed channels.

    Abstract translation: 对流体喷射装置和制造流体喷射装置的方法进行说明。 一个示例性方法可以包括在衬底的本体层中形成流体馈送槽，在衬底的至少外延层中形成多个供墨通道，每个供墨通道流体耦合到流体供给槽，以及 在所述衬底上形成多个液滴发生器，使得所述衬底的所述外延层位于所述多个液滴发生器和所述主体层之间，并且使得所述液滴发生器中的每一个通过以下中的至少一个流体耦合到所述流体供给槽 供墨通道。

    Molded structures with channels
    56.
    发明授权
    Molded structures with channels 有权

    公开(公告)号：US12134274B2

    公开(公告)日：2024-11-05

    申请号：US18454771

    申请日：2023-08-23

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Chien-Hua Chen ,  Michael W. Cumbie ,  Michael G. Groh

    IPC: B41J2/16 ,  B41J2/14 ,  B41J2/18

    Abstract: An example device may comprise a molded structure and a dependent device coupled to the molded structure. The molded structure comprises thermo-electric traces and channels. The channels are between ten μm and two hundred μm, or less in one dimension. The dependent device comprises apertures corresponding to the channels and through which fluids, electromagnetic radiation, or a combination thereof is to travel. The dependent device also comprises contacts corresponding to the thermo-electric traces of the molded structure.

    OVERFILL-TOLERANT MICROFLUIDIC STRUCTURES
    58.
    发明公开
    OVERFILL-TOLERANT MICROFLUIDIC STRUCTURES 审中-公开

    公开(公告)号：US20240226878A1

    公开(公告)日：2024-07-11

    申请号：US18559496

    申请日：2021-05-07

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Michael W. Cumbie ,  Viktor Shkolnikov ,  Brian J. Keefe

    IPC: B01L3/00 ,  B01L7/00

    CPC classification number: B01L3/502707 ,  B01L7/52 ,  B01L2200/0684 ,  B01L2300/048 ,  B01L2300/0838

    Abstract: An example overfill-tolerant microfluidic structure can include an inlet microfluidic channel. A sample chamber can be connected to the inlet microfluidic channel to receive liquid from the inlet microfluidic channel. A gas-permeable liquid barrier can be connected to the sample chamber and positioned to allow gas to flow out of the sample chamber. An overflow chamber can be connected to the inlet microfluidic channel. A capillary break can be positioned between the inlet microfluidic channel and the overflow chamber. The capillary break can include a narrowed opening with a smaller width than a width of the inlet microfluidic channel. In some examples, the gas-permeable liquid barrier can allow gas to flow out of the sample chamber at a pressure lower than the break pressure, and prevent liquid from flowing out of the sample chamber at the break pressure.

    FLUID EJECTION DEVICE WITH BREAK(S) IN COVER LAYER
    59.
    发明公开
    FLUID EJECTION DEVICE WITH BREAK(S) IN COVER LAYER 审中-公开

    公开(公告)号：US20230356527A1

    公开(公告)日：2023-11-09

    申请号：US18222369

    申请日：2023-07-14

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Michael W. Cumbie ,  Anthony M. Fuller ,  Chien-Hua Chen

    IPC: B41J2/14 ,  B41J2/16

    CPC classification number: B41J2/1433 ,  B41J2/162 ,  B41J2/1637

    Abstract: In various examples, a fluid ejection device may include a fluid ejection die formed with a first material and that includes a bondpad and a plurality of fluid ejectors, and a cover layer adjacent the fluid ejection die. The cover may be formed with a second material that is different than the first material and may include a first region that overlays the bondpad and a second region that overlays the plurality of fluid ejectors. In various examples, the first and second regions are separated by a break in the cover layer. The break may be filled with a third material that is different than one or both of the first and second material.

    ACCESSING REGISTERS OF FLUID EJECTION DEVICES
    60.
    发明公开
    ACCESSING REGISTERS OF FLUID EJECTION DEVICES 审中-公开

    公开(公告)号：US20230356525A1

    公开(公告)日：2023-11-09

    申请号：US18225023

    申请日：2023-07-21

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Scott A. Linn ,  James Michael Gardner ,  Michael W. Cumbie

    IPC: B41J2/045

    CPC classification number: B41J2/04541 ,  B41J2/04586

    Abstract: An integrated circuit to drive a plurality of fluid actuation devices includes a status register, a plurality of interfaces, and control logic. The plurality of interfaces include a mode interface, a data interface, and a fire interface. The control logic enables reading of the status register in response to a signal on the mode interface transitioning to logic high with a logic high signal on the data interface, and transitioning a signal on the fire interface to logic high with the signal on the single data interface floating.

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