中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

17 records (took 0.024 seconds)

    Fluid ejection device with printhead ink level sensor
    13.
    发明授权
    Fluid ejection device with printhead ink level sensor 有权

    公开(公告)号：US10155379B2

    公开(公告)日：2018-12-18

    申请号：US15519310

    申请日：2014-10-29

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

    Inventor： Boon Bing Ng ,  Hang Ru Goy ,  Patrick Leonard ,  Shane O'Brien

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

    Abstract: A fluid ejection device including a printhead die having a plurality of layers, including a single metal layer, and having an integrated ink level sensor. The ink level sensor includes an ink chamber above the metal layer, a metal plate of a sense capacitor disposed in the metal layer, and a clearing resistor circuit disposed in the metal layer including four clearing resistors arranged in a surround-4 configuration about the metal plate and electrically connected in parallel between a voltage potential and ground, wherein adjacent ends of at least two clearing resistors are not directly connected to one another so as to leave a gap between the adjacent ends in the metal layer. A metal lead in the metal layer extends through the gap to the metal plate.

    PRINTHEAD-INTEGRATED INK LEVEL SENSOR WITH CENTRAL CLEARING RESISTOR
    14.
    发明申请
    PRINTHEAD-INTEGRATED INK LEVEL SENSOR WITH CENTRAL CLEARING RESISTOR 审中-公开

    公开(公告)号：US20180354271A1

    公开(公告)日：2018-12-13

    申请号：US15761621

    申请日：2015-11-10

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

    Inventor： Boon Bing Ng ,  Patrick Leonard ,  Raymond Connolly

    IPC: B41J2/175 ,  G01F23/26

    Abstract: The present subject matter relates to printhead-integrated ink level sensor (PILS) system. In an example implementation, the PILS system includes a sense capacitor plate in a fluid sensing chamber to sense a level of fluid in the fluid sensing chamber. The fluid sensing chamber is in fluid communication with a fluid reservoir of the printhead to receive fluid from the fluid reservoir. The sense capacitor plate includes at least one slot. The PILS system further includes at least one central clearing resistor and at least one peripheral clearing resistor to clear the fluid sensing chamber of the fluid. The central clearing resistor is provided in the at least one slot of the sense capacitor plate. The at least one peripheral resistor is provided in the fluid sensing chamber surrounding the sense capacitor plate.

    FLUID EJECTION DEVICE WITH INTEGRATED INK LEVEL SENSORS
    17.
    发明申请
    FLUID EJECTION DEVICE WITH INTEGRATED INK LEVEL SENSORS 有权
    具有集成墨水量传感器的流体喷射装置

    公开(公告)号：US20170036452A1

    公开(公告)日：2017-02-09

    申请号：US15107420

    申请日：2014-01-03

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

    Inventor： Ning Ge ,  Patrick Leonard

    IPC: B41J2/175

    CPC classification number: B41J2/17566 ,  B41J2/04541 ,  B41J2/0458 ,  B41J2/14153 ,  B41J2002/14354

    Abstract: In an embodiment, a fluid ejection device includes a fluid feed slot formed in a printhead die and a plurality of printhead-integrated ink level sensors (PILS). A fluid ejection device may include a first PILS to sense an ink level of a first chamber in fluid communication with the fluid feed slot, the first PILS to detect an empty ink level of the first chamber when the fluid ejection device is at a first ink level state, and a second PILS to sense an ink level of a second chamber in fluid communication with the fluid feed slot, the second PILS to detect an empty ink level of the second chamber when the fluid ejection device is at a second ink level state, different than the first ink level state

    Abstract translation: 在一个实施例中，流体喷射装置包括形成在打印头芯片中的流体供给槽和多个打印头集成的油墨水平传感器（PILS）。 流体喷射装置可以包括用于感测与流体供给槽流体连通的第一室的油墨水平的第一PILS，当流体喷射装置处于第一油墨时，第一PILS检测第一室的空墨水平 以及第二PILS，用于感测与所述流体供给槽流体连通的第二室的墨水量，所述第二PILS在所述流体喷射装置处于第二墨水量状态时检测所述第二腔室的空墨水平 ，与第一墨水量状态不同

Patent Agency Ranking