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    Fluidic dies with inlet and outlet channels
    82.
    发明授权
    Fluidic dies with inlet and outlet channels 有权

    公开(公告)号：US11225074B2

    公开(公告)日：2022-01-18

    申请号：US16500431

    申请日：2017-09-11

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

    Inventor： Michael W. Cumbie ,  Chien-Hua Chen

    IPC: B41J2/175 ,  B41J2/14 ,  B41J2/045

    Abstract: In one example in accordance with the present disclosure, a fluidic ejection die is described. The die includes an array of nozzles. Each nozzle includes an ejection chamber, an opening, and a fluid actuator disposed within the ejection chamber. Each nozzle also includes an inlet passage to deliver fluid into the ejection chamber and an outlet passage to deliver fluid out of the ejection chamber. The fluidic ejection die also includes an array of channels divided into inlet channels and outlet channels. Each inlet channel is fluidly connected to a respective plurality of inlet passages and each outlet channel is fluidly connected to a respective plurality of outlet passages.

    FLUIDIC DIE ASSEMBLIES WITH RIGID BENT SUBSTRATES
    84.
    发明申请
    FLUIDIC DIE ASSEMBLIES WITH RIGID BENT SUBSTRATES 有权

    公开(公告)号：US20210323312A1

    公开(公告)日：2021-10-21

    申请号：US17251263

    申请日：2018-11-14

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

    Inventor： Chien-Hua Chen ,  Michael W. Cumbie

    IPC: B41J2/175 ,  B41J2/16

    Abstract: In one example in accordance with the present disclosure, a fluidic die assembly is described. The fluidic die assembly includes a rigid substrate having a bend therein. A fluidic die is disposed on the rigid substrate. The fluidic die is to eject fluid from a reservoir fluidly coupled to the fluidic die. The fluidic die includes an array of ejection subassemblies. Each ejection subassembly includes an ejection chamber to hold a volume of fluid, an opening, and a fluid actuator to eject a portion of the volume of fluid through the opening. The fluidic die assembly also includes an electrical interface disposed on the rigid substrate to establish an electrical connection between the fluidic die and a controller. The fluidic die and the electrical interface are disposed on a same surface on opposite sides of the bend.

    FLUIDIC EJECTION DIES WITH ENCLOSED CROSS-CHANNELS
    86.
    发明申请
    FLUIDIC EJECTION DIES WITH ENCLOSED CROSS-CHANNELS 有权

    公开(公告)号：US20210291547A1

    公开(公告)日：2021-09-23

    申请号：US17340570

    申请日：2021-06-07

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

    Inventor： Si-Iam Choy ,  Michael W. Cumbie ,  Chien-Hua Chen ,  Jeffrey R. Pollard

    IPC: B41J2/18

    Abstract: In one example in accordance with the present disclosure, a fluidic ejection die is described. The die includes an array of nozzles. Each nozzle includes an ejection chamber and an opening. A fluid actuator is disposed within the ejection chamber. The fluidic ejection die also includes an array of passages, formed in a substrate, to deliver fluid to and from the ejection chamber. The fluidic ejection die also includes an array of enclosed cross-channels. Each enclosed cross-channel of the array of enclosed cross-channels is fluidly connected to a respective plurality of passages of the array of passages.

    Fluid property sensing with electrodes
    87.
    发明授权
    Fluid property sensing with electrodes 有权

    公开(公告)号：US11009383B2

    公开(公告)日：2021-05-18

    申请号：US16092572

    申请日：2016-04-21

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

    Inventor： Michael W. Cumbie ,  Chien-Hua Chen ,  Greg Scott Long

    IPC: G01F23/26 ,  B41J2/195 ,  B41J2/175 ,  G01N27/22 ,  G01N33/32 ,  G01F23/24

    Abstract: In one example in accordance with the present disclosure a fluid property sensing device is described. The fluid property sensing device includes a substrate having a trench formed therein. The trench includes a bottom surface and opposite side surfaces. A first electrode is disposed on a first side surface of the trench and a second electrode is disposed on a second side surface of the trench. The first electrode and second electrode form a capacitor to measure a complex impedance of a fluid that fills a space between the first electrode and the second electrode. This complex impedance indicates a property of the fluid. A fluid level sensing die, having a number of fluid level sensing components disposed thereon, may be attached to the substrate, preferably in such a way that the fluid level sensing die is surrounded by the trench. In this way the surface area of the electrodes provided in the trench can be increased. The number of level sensing components may be thermal sensing components.

    Liquid level sensing
    88.
    发明授权
    Liquid level sensing 有权

    公开(公告)号：US11009382B2

    公开(公告)日：2021-05-18

    申请号：US16092531

    申请日：2016-07-21

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

    Inventor： Chien-Hua Chen ,  Michael W. Cumbie ,  Robert N. K. Browning

    IPC: G01F23/24 ,  B41J2/175

    Abstract: In one example a liquid level sensor is described. The sensor includes a carrier and a liquid level sensing interface disposed on the carrier. The liquid level sensing interface includes a number of liquid level sensing devices disposed on an elongated strip. The number of liquid level sensing devices detect a liquid level in a liquid container. The liquid level sensing interface also includes a number of thermal isolation components formed on the elongated strip to thermally isolate adjacent liquid level sensing devices.

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