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    BYPASS FLUID CIRCULATION IN FLUID EJECTION DEVICES
    1.
    发明申请
    BYPASS FLUID CIRCULATION IN FLUID EJECTION DEVICES 有权
    流体喷射装置中的旁路流体循环

    公开(公告)号：US20130293641A1

    公开(公告)日：2013-11-07

    申请号：US13793416

    申请日：2013-03-11

    Applicant: FUJIFILM CORPORATION

    Inventor： Kevin von Essen ,  Paul A. Hoisington

    IPC: B41J2/18

    CPC classification number: B41J2/18 ,  B41J2/14145 ,  B41J2/14201 ,  B41J2/175 ,  B41J2002/14419 ,  B41J2202/08 ,  B41J2202/12

    Abstract: A fluid ejection device includes a fluid manifold, a substrate coupled to the fluid manifold, and a fluid distribution structure disposed between the fluid manifold and the substrate. The fluid manifold includes a fluid supply chamber and a fluid return chamber. The substrate defines a flow path including a flow path inlet for receiving fluid, a nozzle for ejecting fluid droplets, and a flow path outlet for channeling away un-ejected fluid. The fluid distribution structure includes a fluid supply channel including a supply inlet fluidically coupled to the fluid supply chamber and a supply outlet fluidically coupled to the flow path. The fluid distribution structure also includes a fluid bypass channel including a bypass inlet fluidically coupled to the fluid supply chamber, a bypass outlet fluidically coupled to the fluid return chamber, and a flow inhibitor between the bypass inlet and the bypass outlet providing a supplemental flow resistance to the fluid bypass channel. The flow inhibitor includes a convergent-divergent throat section.

    Abstract translation: 流体喷射装置包括流体歧管，连接到流体歧管的基底以及设置在流体歧管和基底之间的流体分布结构。 流体歧管包括流体供应室和流体返回室。 衬底限定了包括用于接收流体的流路入口，用于喷射流体液滴的喷嘴和用于引导未喷射流体的流路出口的流路。 流体分配结构包括流体供应通道，其包括流体地联接到流体供应室的供应入口和与流动路径流体连接的供应出口。 流体分配结构还包括流体旁路通道，其包括流体耦合到流体供应室的旁路入口，流体耦合到流体返回室的旁路出口，以及旁路入口和旁路出口之间的流动抑制器，其提供补充流动阻力 到流体旁路通道。 流动抑制器包括会聚发散的喉部。

    Apparatus for fluid droplet ejection having a recirculation passage
    2.
    发明授权
    Apparatus for fluid droplet ejection having a recirculation passage 有权
    具有再循环通道的液滴喷射装置

    公开(公告)号：US08820899B2

    公开(公告)日：2014-09-02

    申请号：US13955834

    申请日：2013-07-31

    Applicant: FUJIFILM Corporation

    Inventor： Paul A. Hoisington ,  Mats G. Ottosson ,  Tadashi Kyoso ,  Kanji Nagashima

    IPC: B41J2/17

    CPC classification number: B41J2/14 ,  B41J2/14233 ,  B41J2002/14241 ,  B41J2002/14266 ,  B41J2002/14459 ,  B41J2002/14491 ,  B41J2202/11 ,  B41J2202/12

    Abstract: A system for ejecting droplets of a fluid is described. The system includes a substrate having a flow path body that includes a fluid pumping chamber, a descender fluidically connected to the fluid pumping chamber, and a nozzle fluidically connected to the descender. The nozzle is arranged to eject droplets of fluid through an outlet formed in an outer substrate surface. The flow path body also includes a recirculation passage fluidically connected to the descender. The system for ejecting droplets of a fluid also includes a fluid supply tank fluidically connected to the fluid pumping chamber, a fluid return tank fluidically connected to the recirculation passage, and a pump fluidically connecting the fluid return tank and the fluid supply tank. In some implementations, a flow of fluid through the flow path body is at a flow rate sufficient to force air bubbles or contaminants through the flow path body.

    Abstract translation: 描述了用于喷射液体的液滴的系统。 该系统包括具有流路主体的基板，该流路主体包括流体泵送室，与流体泵送室流体连接的下降器以及与下降器流体连接的喷嘴。 喷嘴被布置成通过形成在外部基板表面中的出口喷射流体液滴。 流路主体还包括与下降器流体连接的再循环通道。 用于喷射流体液滴的系统还包括流体连接到流体泵送室的流体供应罐，流体连接到再循环通道的流体回流罐和流体连接流体回流罐和流体供应罐的泵。 在一些实施方式中，通过流路主体的流体流是足以迫使气泡或污染物通过流路主体的流速。

    NOZZLE PLATE MAINTENANCE FOR FLUID EJECTION DEVICES
    3.
    发明申请
    NOZZLE PLATE MAINTENANCE FOR FLUID EJECTION DEVICES 有权
    喷嘴板维护流体喷射装置

    公开(公告)号：US20140111575A1

    公开(公告)日：2014-04-24

    申请号：US13657669

    申请日：2012-10-22

    Applicant: FUJIFILM Corporation

    Inventor： Paul A. Hoisington ,  Andreas Bibl ,  Jeffrey Birkmeyer ,  Mats G. Ottosson ,  Arman Hajati

    IPC: B41J2/165

    CPC classification number: B41J2/16505 ,  B41J2/1433 ,  B41J2/16552 ,  B41J2002/16502 ,  B41J2002/16582 ,  B41J2202/12

    Abstract: An ink jet printhead includes: a nozzle plate having an underside and including one or more nozzles in the underside configured to dispense drops of fluid in a dispensing direction; and a multi-level maintenance structure coupled to the nozzle plate such that a gap exists between a portion of the maintenance structure and the underside of the nozzle plate. The maintenance structure includes: a first portion having a first upper surface suspended at a first distance from the underside of the nozzle plate; and a second portion that is coupled to the first portion, the second portion having a second upper surface suspended at a second distance from the underside of the nozzle plate, which is greater than the first distance, the second upper surface laterally displaced relative to the first upper surface.

    Abstract translation: 一种喷墨打印头包括：喷嘴板，其具有下侧，并且在下侧中包括一个或多个喷嘴，其构造成在分配方向上分配流体液滴; 以及耦合到喷嘴板的多级维护结构，使得在维护结构的一部分和喷嘴板的下侧之间存在间隙。 所述维护结构包括：第一部分，其具有悬挂在距所述喷嘴板的下侧第一距离处的第一上表面; 以及第二部分，其联接到所述第一部分，所述第二部分具有悬挂在距所述喷嘴板的下侧的第二距离处的第二上表面，所述第二上表面大于所述第一距离，所述第二上表面相对于所述第一部分横向移位 第一上表面。

    Moisture protection of fluid ejector
    4.
    发明授权
    Moisture protection of fluid ejector 有权
    液体喷射器的防潮

    公开(公告)号：US09067228B2

    公开(公告)日：2015-06-30

    申请号：US13891827

    申请日：2013-05-10

    Applicant: FUJIFILM Corporation

    Inventor： Christoph Menzel ,  Andreas Bibl ,  Paul A. Hoisington

    IPC: B05B17/06 ,  B41J2/14

    CPC classification number: B05B17/0653 ,  B41J2/14233 ,  B41J2002/14491 ,  B41J2202/03

    Abstract: A fluid ejection apparatus includes a substrate having a plurality of fluid passages for fluid flow and a plurality of nozzles fluidically connected to the fluid passages, a plurality of actuators positioned on top of the substrate to cause fluid in the plurality of fluid passages to be ejected from the plurality of nozzles, and a protective layer formed over at least a portion of the plurality of actuators, the protective layer having an intrinsic permeability to moisture less than 2.5×10−3 g/m·day.

    Abstract translation: 流体喷射装置包括具有多个用于流体流动的流体通道的基板和与流体通道流体连接的多个喷嘴;位于基板顶部的多个致动器，以使多个流体通道中的流体被弹出 从所述多个喷嘴形成的保护层和形成在所述多个致动器的至少一部分上的保护层，所述保护层对于小于2.5×10-3g / m·天的水分的固有渗透性。

    Ring electrode for fluid ejection
    7.
    发明授权
    Ring electrode for fluid ejection 有权
    用于流体喷射的环形电极

    公开(公告)号：US08727471B2

    公开(公告)日：2014-05-20

    申请号：US13801836

    申请日：2013-03-13

    Applicant: FUJIFILM Corporation

    Inventor： Mats G. Ottosson ,  Christoph Menzel ,  Paul A. Hoisington

    IPC: B41J29/38 ,  B41J2/045

    CPC classification number: B41J2/04588 ,  B41J2/14233 ,  B41J2202/12 ,  H01L41/047

    Abstract: Methods, systems, and apparatus for drive a pumping chamber of a fluid ejection system are disclosed. In one implementation, the actuator for drive the pumping chamber includes a continuous piezoelectric layer between a pair of drive electrodes and a continuous reference electrode. The pair of drive electrodes includes an inner electrode and an outer electrode surrounding the inner electrode. The actuator is further coupled to a controller which, during a fluid ejection cycle, applies a negative voltage pulse differential to the outer electrode to expand the pumping chamber for a first time period, then applies another negative voltage pulse differential to the inner electrode during a second time period after the first time period to contract the pumping chamber to eject a fluid drop.

    Abstract translation: 公开了用于驱动流体喷射系统的泵送室的方法，系统和装置。 在一个实施方案中，用于驱动泵送室的致动器包括在一对驱动电极和连续参考电极之间的连续压电层。 一对驱动电极包括内电极和围绕内电极的外电极。 致动器还耦合到控制器，控制器在流体喷射循环期间向外电极施加负电压脉冲差分以使泵室膨胀第一时间段，然后在第一时间期间向内电极施加另一负电压脉冲差分 在第一时间段之后的第二时间段以收缩泵送室以喷射液滴。

    FLUID RECIRCULATION IN DROPLET EJECTION DEVICES
    8.
    发明申请
    FLUID RECIRCULATION IN DROPLET EJECTION DEVICES 有权
    流体喷射装置中的流体回收

    公开(公告)号：US20140043404A1

    公开(公告)日：2014-02-13

    申请号：US14057180

    申请日：2013-10-18

    Applicant: FUJIFILM Corporation

    Inventor： Paul A. Hoisington ,  Christoph Menzel ,  Mats G. Ottosson ,  Kevin von Essen

    IPC: B41J2/175

    CPC classification number: B41J2/175 ,  B41J2/14233 ,  B41J2002/14419 ,  B41J2002/14459 ,  B41J2202/12

    Abstract: A fluid ejection apparatus includes a fluid distribution layer between a fluid manifold and a substrate. The fluid distribution layer includes fluid supply channels and fluid return channels. Each fluid supply channel receives fluid from the fluid supply chamber and circulates a fraction of the received fluid back to the fluid return chamber through a return-side bypass. The substrate include a plurality of flow paths, each flow path includes a nozzle for ejecting fluid droplets. Each flow path receives fluid from a respective fluid supply channel, and channel un-ejected fluid into a respective fluid return channel. Each fluid return channel can collect the un-ejected fluid from one or more flow paths and a supply-side bypass, and return the collected fluid back to the fluid supply chamber.

    Abstract translation: 流体喷射装置包括在流体歧管和基底之间的流体分配层。 流体分配层包括流体供应通道和流体返回通道。 每个流体供应通道从流体供应室接收流体，并通过返回侧旁路将一部分接收的流体循环回流体返回室。 基板包括多个流路，每个流路包括用于喷射流体液滴的喷嘴。 每个流动路径从相应的流体供应通道接收流体，并将未喷射的流体通道流入相应的流体返回通道。 每个流体返回通道可以从一个或多个流动路径和供给侧旁路收集未排出的流体，并将收集的流体返回到流体供应室。

    Nozzle plate maintenance for fluid ejection devices
    9.
    发明授权
    Nozzle plate maintenance for fluid ejection devices 有权
    流体喷射装置的喷嘴板维护

    公开(公告)号：US08870341B2

    公开(公告)日：2014-10-28

    申请号：US13657669

    申请日：2012-10-22

    Applicant: FUJIFILM Corporation

    Inventor： Paul A. Hoisington ,  Andreas Bibl ,  Jeffrey Birkmeyer ,  Mats G. Ottosson ,  Arman Hajati

    IPC: B41J2/165 ,  B41J2/14

    CPC classification number: B41J2/16505 ,  B41J2/1433 ,  B41J2/16552 ,  B41J2002/16502 ,  B41J2002/16582 ,  B41J2202/12

    Abstract: An ink jet printhead includes: a nozzle plate having an underside and including one or more nozzles in the underside configured to dispense drops of fluid in a dispensing direction; and a multi-level maintenance structure coupled to the nozzle plate such that a gap exists between a portion of the maintenance structure and the underside of the nozzle plate. The maintenance structure includes: a first portion having a first upper surface suspended at a first distance from the underside of the nozzle plate; and a second portion that is coupled to the first portion, the second portion having a second upper surface suspended at a second distance from the underside of the nozzle plate, which is greater than the first distance, the second upper surface laterally displaced relative to the first upper surface.

    Abstract translation: 一种喷墨打印头包括：喷嘴板，其具有下侧，并且在下侧中包括一个或多个喷嘴，其构造成在分配方向上分配流体液滴; 以及耦合到喷嘴板的多级维护结构，使得在维护结构的一部分和喷嘴板的下侧之间存在间隙。 所述维护结构包括：第一部分，其具有悬挂在距所述喷嘴板的下侧第一距离处的第一上表面; 以及第二部分，其联接到所述第一部分，所述第二部分具有悬挂在距所述喷嘴板的下侧的第二距离处的第二上表面，所述第二上表面大于所述第一距离，所述第二上表面相对于所述第一部分横向移位 第一上表面。

    Fluid recirculation in droplet ejection devices
    10.
    发明授权
    Fluid recirculation in droplet ejection devices 有权
    液滴喷射装置中的液体再循环

    公开(公告)号：US08807719B2

    公开(公告)日：2014-08-19

    申请号：US14057180

    申请日：2013-10-18

    Applicant: FUJIFILM Corporation

    Inventor： Paul A. Hoisington ,  Christoph Menzel ,  Mats G. Ottosson ,  Kevin von Essen

    IPC: B41J2/175

    CPC classification number: B41J2/175 ,  B41J2/14233 ,  B41J2002/14419 ,  B41J2002/14459 ,  B41J2202/12

    Abstract: A fluid ejection apparatus includes a fluid distribution layer between a fluid manifold and a substrate. The fluid distribution layer includes fluid supply channels and fluid return channels. Each fluid supply channel receives fluid from the fluid supply chamber and circulates a fraction of the received fluid back to the fluid return chamber through a return-side bypass. The substrate include a plurality of flow paths, each flow path includes a nozzle for ejecting fluid droplets. Each flow path receives fluid from a respective fluid supply channel, and channel un-ejected fluid into a respective fluid return channel. Each fluid return channel can collect the un-ejected fluid from one or more flow paths and a supply-side bypass, and return the collected fluid back to the fluid supply chamber.

    Abstract translation: 流体喷射装置包括在流体歧管和基底之间的流体分配层。 流体分配层包括流体供应通道和流体返回通道。 每个流体供应通道从流体供应室接收流体，并通过返回侧旁路将一部分接收的流体循环回流体返回室。 基板包括多个流路，每个流路包括用于喷射流体液滴的喷嘴。 每个流动路径从相应的流体供应通道接收流体，并将未喷射的流体通道流入相应的流体返回通道。 每个流体返回通道可以从一个或多个流动路径和供给侧旁路收集未排出的流体，并将收集的流体返回到流体供应室。

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