公开(公告)号：US11059291B2

公开(公告)日：2021-07-13

申请号：US16629366

申请日：2017-07-31

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

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

IPC: B41J2/14 ,  B41J2/21 ,  B41J2/175 ,  B41J2/16

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 army of passages, formed in a substrate, to deliver fluid to and from the ejection chamber. The fluidic ejection die also includes an army of enclosed cross-channels. Each enclosed cross-channel of the army of enclosed cross-channels is fluidly connected to a respective plurality of passages of the array of passages.

公开(公告)号：US20210129536A1

公开(公告)日：2021-05-06

申请号：US16640751

申请日：2017-10-10

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

Inventor： Si-lam Choy ,  Michael W. Cumbie

IPC: B41J2/165

Abstract: A fluid ejection device includes a fluid ejection assembly including a fluid ejection die, and a service assembly to be slid relative to the fluid ejection assembly between a service position for service of the fluid ejection die and a retracted position nested with the fluid ejection assembly.

公开(公告)号：US20200290365A1

公开(公告)日：2020-09-17

申请号：US16761273

申请日：2017-12-02

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

Inventor： Si-lam Choy ,  Michael W. Cumbie ,  Chien-Hua Chen

IPC: B41J2/18

Abstract: A fluid circulation and ejection system may include a microfluidic die, a single orifice fluid ejector having a drive chamber in the microfluidic die and a pressurized fluid source remote from the microfluidic die to create a pressure gradient across the drive chamber to circulate fluid across the drive chamber.

公开(公告)号：US20190119723A1

公开(公告)日：2019-04-25

申请号：US16094360

申请日：2016-07-22

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

Inventor： Michael W. Cumbie ,  Devin Alexander Mourey ,  Si-lam Choy

IPC: C12Q1/6806 ,  C12Q1/686 ,  B01L3/00 ,  B01L3/02

Abstract: A method of preparing a sample may include depositing an aqueous solution comprising copies of a primer into a layer of hydrophobic liquid on a substrate with a thermal inkjet device. A sample may include: a substrate; a layer of hydrophobic liquid on the substrate, the layer of hydrophobic liquid comprising a plurality of droplets of aqueous solution distributed in the layer, wherein the plurality of droplets contain: primers; a polymerase enzyme; deoxynucleotide triphosphates (dNTPs); and a target sequence for replication; and a cover, the cover contacting and covering the layer of hydrophobic liquid.