公开(公告)号：US20230230790A1

公开(公告)日：2023-07-20

申请号：US18123134

申请日：2023-03-17

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

Inventor： Vincent C. Korthuis ,  Huyen Pham ,  Tsuyoshi Yamashita

IPC: H01H85/02

CPC classification number: H01H85/0241 ,  H01H2085/0266 ,  H01H2085/0275 ,  H01H2085/0291

Abstract: In example implementations, a printhead die is provided. The printhead die includes a substrate, a chamber layer formed on the substrate, a plurality of printing fluid ejection chambers coupled to opposite sides of the chamber layer and along a length of the chamber layer, and a top hat layer formed on the chamber layer and the plurality of printing fluid ejection chambers. The chamber layer includes a void to store printing fluid. The top hat layer includes an initial unsupported top hat layer portion over the void, wherein the initial unsupported top hat layer portion comprises a first end that is narrower than a second end.

公开(公告)号：US20220184946A1

公开(公告)日：2022-06-16

申请号：US17414413

申请日：2019-09-06

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

Inventor： Vincent C. Korthuis ,  Huyen Pham ,  Tsuyoshi Yamashita

IPC: B41J2/14

Abstract: In example implementations, a printhead die is provided. The printhead die includes a substrate, a chamber layer formed on the substrate, a plurality of printing fluid ejection chambers coupled to opposite sides of the chamber layer and along a length of the chamber layer, and a top hat layer formed on the chamber layer and the plurality of printing fluid ejection chambers. The chamber layer includes a void to store printing fluid. The top hat layer includes an initial unsupported top hat layer portion over the void, wherein the initial unsupported top hat layer portion comprises a first end that is narrower than a second end.

公开(公告)号：US11318737B2

公开(公告)日：2022-05-03

申请号：US17052923

申请日：2018-07-02

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

Inventor： Vincent C. Korthuis ,  Rodrigo N. Henriquez ,  Eric T. Martin

IPC: B41J2/045

Abstract: A fluidic die includes primitives arranged to form a number of primitive zones, each primitive zone including a memory to store adjustment data, and at least one signal adjuster to receive a fire signal, and to adjust the received fire signal based on the stored adjustment data to provide an adjusted fire signal to each primitive of the primitive zone. The fluidic die includes an address bus and a set of data lines, each data line corresponding to a different one of the primitives. Mode circuitry directs address data from the address bus to each primitive and print data from each data line to the corresponding primitive when a mode signal has a first value, and directs data representing adjustment data from one of the address bus and the set of data lines to at least one of the memories when the mode signal has a second value.

公开(公告)号：US20220118763A1

公开(公告)日：2022-04-21

申请号：US17417819

申请日：2019-07-03

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

Inventor： Vincent C. Korthuis ,  Stanley Jonathan Wang

IPC: B41J2/16 ,  B41J2/14 ,  C07F7/02

Abstract: Example implementations relate to fluid feed holes. For example, a method of forming a fluid feed hole can include forming a via of a threshold size in a plurality of thin films of a fluid ejection die by removing a portion of the plurality of thin films, forming a fluid-attack-resistant material on the plurality of thin films and in the via, planarizing the fluid-attack-resistant material using chemical mechanical planarization (CMP), and forming the fluid feed hole by removing a portion of the planarized fluid-attack-resistant material in the via.

公开(公告)号：US20210229427A1

公开(公告)日：2021-07-29

申请号：US17052923

申请日：2018-07-02

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

Inventor： Vincent C. Korthuis ,  Rodrigo N. Henriquez ,  Eric T. Martin

IPC: B41J2/045

Abstract: A fluidic die includes primitives arranged to form a number of primitive zones, each primitive zone including a memory to store adjustment data, and at least one signal adjuster to receive a fire signal, and to adjust the received fire signal based on the stored adjustment data to provide an adjusted fire signal to each primitive of the primitive zone. The fluidic die includes an address bus and a set of data lines, each data line corresponding to a different one of the primitives. Mode circuitry directs address data from the address bus to each primitive and print data from each data line to the corresponding primitive when a mode signal has a first value, and directs data representing adjustment data from one of the address bus and the set of data lines to at least one of the memories when the mode signal has a second value.

公开(公告)号：US12240237B2

公开(公告)日：2025-03-04

申请号：US18123134

申请日：2023-03-17

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

Inventor： Vincent C. Korthuis ,  Huyen Pham ,  Tsuyoshi Yamashita

IPC: B41J2/14 ,  H01H85/02

Abstract: In example implementations, a printhead die is provided. The printhead die includes a substrate, a chamber layer formed on the substrate, a plurality of printing fluid ejection chambers coupled to opposite sides of the chamber layer and along a length of the chamber layer, and a top hat layer formed on the chamber layer and the plurality of printing fluid ejection chambers. The chamber layer includes a void to store printing fluid. The top hat layer includes an initial unsupported top hat layer portion over the void, wherein the initial unsupported top hat layer portion comprises a first end that is narrower than a second end.

公开(公告)号：US20200247116A1

公开(公告)日：2020-08-06

申请号：US16857403

申请日：2020-04-24

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

Inventor： Eric Martin ,  Vincent C. Korthuis

IPC: B41J2/045 ,  B41J2/18

Abstract: In some examples, a fluid ejection device includes a nozzle to dispense fluid, and a recirculation controller to control recirculating of the nozzle. The recirculation controller is to receive, from a fluid ejection controller, an indication corresponding to a start of a sampling time interval, determine, during the sampling time interval, whether a firing event corresponding to firing of the nozzle has occurred, and in response to determining that the firing event has not occurred, cause activation of a recirculation pump to recirculate fluid through a chamber of the nozzle.

公开(公告)号：US10688785B2

公开(公告)日：2020-06-23

申请号：US16284108

申请日：2019-02-25

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

Inventor： Vincent C. Korthuis ,  Eric T. Martin ,  Michael W. Cumbie ,  Scott A. Linn

IPC: B41J2/14 ,  B41J2/175

Abstract: According to an example, a printing system may include a drop ejecting element and a fluid circulating element corresponding to the drop ejecting element. The printing system may also include a logic device that is to receive a data stream addressed to the drop ejecting element, determine whether the data stream indicates that the drop ejecting element is to be energized, and in response to a determination that the data stream does not indicate that the drop ejecting element is to be energized, energize the fluid circulating element.

公开(公告)号：US20190184704A1

公开(公告)日：2019-06-20

申请号：US16284108

申请日：2019-02-25

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

Inventor： Vincent C. Korthuis ,  Eric T. Martin ,  Michael W. Cumbie ,  Scott A. Linn

IPC: B41J2/14 ,  B41J2/175

Abstract: According to an example, a printing system may include a drop ejecting element and a fluid circulating element corresponding to the drop ejecting element. The printing system may also include a logic device that is to receive a data stream addressed to the drop ejecting element, determine whether the data stream indicates that the drop ejecting element is to be energized, and in response to a determination that the data stream does not indicate that the drop ejecting element is to be energized, energize the fluid circulating element.

公开(公告)号：US10245830B2

公开(公告)日：2019-04-02

申请号：US15748285

申请日：2015-10-30

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

Inventor： Vincent C. Korthuis ,  Eric T. Martin ,  Michael W. Cumbie ,  Scott A. Linn

IPC: B41J2/14 ,  B41J2/175

Abstract: According to an example, a printing system may include a drop ejecting element and a fluid circulating element corresponding to the drop ejecting element. The printing system may also include a logic device that is to receive a data stream addressed to the drop ejecting element, determine whether the data stream indicates that the drop ejecting element is to be energized, and in response to a determination that the data stream does not indicate that the drop ejecting element is to be energized, energize the fluid circulating element.