WO2022066158A1 - Distribution de fluide microfluidique numérique - Google Patents

Distribution de fluide microfluidique numérique Download PDF

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Publication number
WO2022066158A1
WO2022066158A1 PCT/US2020/052564 US2020052564W WO2022066158A1 WO 2022066158 A1 WO2022066158 A1 WO 2022066158A1 US 2020052564 W US2020052564 W US 2020052564W WO 2022066158 A1 WO2022066158 A1 WO 2022066158A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
printing
reservoir
ejection chamber
array
Prior art date
Application number
PCT/US2020/052564
Other languages
English (en)
Inventor
Michael W. Cumbie
Chien-Hua Chen
Viktor Shkolnikov
Original Assignee
Hewlett-Packard Development Company, L.P.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett-Packard Development Company, L.P. filed Critical Hewlett-Packard Development Company, L.P.
Priority to PCT/US2020/052564 priority Critical patent/WO2022066158A1/fr
Publication of WO2022066158A1 publication Critical patent/WO2022066158A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/08—Ducts, containers, supply or metering devices with ink ejecting means, e.g. pumps, nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L27/00—Inking arrangements or devices
    • B41L27/04—Ducts, containers, or supply devices or ink-level control devices

Definitions

  • printing fluids may contain solids that may be used for a number of different purposes.
  • colorants in the printing fluids may be used to form text, images, and/or objects on print media, such as in the form of colors on a page of paper.
  • the solids may include components to provide a layer of protection on a print medium, such as polymers within a clear coat to provide a layer of protection on print media.
  • the solids may include binder particles capable of absorbing electromagnetic radiation of desired wavelengths (e.g., ultraviolet (UV) light) and causing build material to bind together.
  • the solids may include particles that make up agents or reagents to be used in the context of a biomedical test.
  • the printing fluids may be ejected from the printing device via fluid ejection chambers, such as including nozzles and fluid actuators, to form droplets of printing fluid to be deposited on a medium or materials.
  • Printing devices may use, among other things, pressurized fluid lines and capillary forces of porous media to move printing fluids from reservoirs to the ejection chambers.
  • Figure 1 illustrates a block diagram illustrating an example fluid device to deliver fluids to a fluid ejection chamber
  • Figures 2A-2B illustrate an example linear electrode to move fluids
  • Figure 3 illustrates an example array to move fluid to a fluid ejection chamber
  • Figure 4 illustrates a schematic cross-sectional diagram of an example fluid device to deliver fluids to a fluid ejection chamber
  • Figures 5A-5D illustrates an example fluid device for intermixing printing fluids
  • FIG. 6 illustrates an example digital microfluidics (DMF) device
  • Figure 7 illustrates a flow diagram of a process to deliver fluid in a fluid device, according to another example.
  • printing fluid may be transferred to fluid ejection chambers of the printing devices using pressurized fluid lines and capillary forces in porous media.
  • air may be introduced into the fluid ejection chambers, such as via the pressurized fluid lines or the porous media.
  • the presence of air in the fluid ejection chambers may lead to failure of the fluid actuators upon activation.
  • solids in the printing fluid may settle in the fluid lines, the porous media, and/or the fluid ejection chambers.
  • fluid delivery systems including pressurized fluid lines may introduce complexity and cost into the print system, such as using pumps, valves, and the like. There may be a desire, therefore, for alternative approaches for moving printing fluid from reservoirs towards ejection chambers.
  • a digital microfluidic (DMF) system may be employed for moving printing fluid from reservoirs towards ejection chambers.
  • DMF systems may enable packets of fluid to be moved from reservoirs toward the bottom of a feed hole next to the ejection chamber by activating a voltage to electrodes adjacent to a droplet and deactivating a voltage to an electrode under the droplet. The droplet may then move from the deactivated electrode it is currently on to the activated, adjacent electrode. By continuously varying the voltages of the electrodes, individual droplets may be maneuvered along a line of electrodes.
  • DMF systems may move printing fluid from the reservoirs towards ejection chambers without the use of pressure regulators, pumps, valves, and the like which may reduce the cost and complexity of implementing the fluid delivery system without compromising the performance of the system.
  • the use of a DMF system may provide increased flexibility and precision in how the fluids are delivered. As discuss above, fluid delivery systems that use pressure to move the printing fluids may result in pockets of air being pushed into the ejection chambers, creating failure of the fluid actuators upon activation. DMF systems, on the other hand, enable the fluid to be pulled toward the ejection chambers using voltage variations. The voltage variations may allow the fluid to be moved.
  • DMF systems may enable an entire droplet of printing fluid (e.g., ink) to be moved along the line of electrodes at the time of printing. Therefore, different composites of the printing fluid are not separated in a fluid line (e.g., separation of solid and liquid) which may maintain the integrity of the fluid composition and prevent clogging due to a buildup of fluid residues.
  • printing fluid e.g., ink
  • a fluid line e.g., separation of solid and liquid
  • Examples described herein provide a fluid device comprising a fluid reservoir arranged to deliver printing fluid to a fluid ejection chamber.
  • the fluid device may include a substrate including an array of microfluidic electrodes.
  • electrical interconnects may be included in the fluid device to receive control signals which enable the delivery of printing fluid from the reservoir to a fluid port.
  • a method of operating a fluid device may include receiving, by electrical interconnects, control signals to enable delivery of a first printing fluid from a first reservoir to a fluid port of a fluid ejection chamber.
  • the method may also include directing, by a first microfluidic electrode from a substrate including an array of microfluidic electrodes, a first transmission of the first printing fluid from the first fluid reservoir to the fluid port of the fluid ejection chamber.
  • the method also includes receiving, by the electrical interconnects, control signals to enable delivery of a second printing fluid from a second reservoir to the fluid port of the fluid ejection chamber and directing, by a second microfluidic electrode from the substrate including the array of microfluidic electrodes, a second transmission of the second printing fluid from the second fluid reservoir to the fluid port of the fluid ejection chamber.
  • a DMF device comprises a capping fluid reservoir arranged to deliver capping fluid to a fluid ejection chamber.
  • the fluid device may include a substrate including an array of microfluidic electrodes.
  • electrical interconnects to may be included in the DMF device to receive control signals to enable delivery of the capping fluid from the reservoir to a feedhole of the fluid ejection chamber.
  • an implementation, one case, an example, and/or the like means that a particular feature, structure, characteristic, and/or the like described in relation to a particular implementation, case, and/or example is included in an implementation, case, and/or example of claimed subject matter.
  • appearances of such phrases, for example, in various places throughout this specification are not necessarily intended to refer to the same implementation, case, and/or example or to any one particular implementation, case, and/or example.
  • particular features, structures, characteristics, and/or the like described are capable of being combined in various ways in different implementations, cases, and/or examples and, therefore, are within intended claim scope.
  • Figure 1 a block diagram of an example fluid device for moving fluids to a fluid ejection is illustrated as a block diagram.
  • Figure 1 shows an example fluid device 100 which includes fluid reservoir 102, electrical interconnects 104, substrate 106, microelectrode array 108, and fluid ejection chamber 110.
  • Fluid device 100 may comprise a device capable of transferring fluids to a fluid ejection device, such as discussed above. It should be noted that fluid device 100 may include or be in communication with components of an electronic device, such as a processor, a memory, and a controller to enable functionality of fluid device 100. Examples of fluid device 100 may a include printing device, such as a two-dimensional (2D) printer and/or a three-dimensional (3D) printer. In some examples, fluid device 100 may refer to a fluid ejection device, such as an inkjet print module or printhead cartridge. [0019] Fluid reservoir 102 may include a container capable of storing printing fluid and mechanism for transferring of printing fluid toward microelectrode array 108.
  • the printing fluid may include any fluid capable of being dispensed by fluid ejection chamber 110 onto a media, such as paper, a layer of powder-based build material, reactive devices (such as iab-on-a-chip device), etc.
  • the printing fluid may include a material for printing, such as ink, toner, powders, colorants, varnishes, finishes, gloss enhancers, binders, fusing agents, inhibiting agents, and/or other such materials which may be utilized in the printing process.
  • printing fluids may include fluid colorants, such as pigments.
  • the printing fluid comprises an ink solvent replenishment fluid.
  • Electrical interconnects 104 allow fluid device 100 to exchange control signaling with an electronic device, such as a controller or processor which enables fluid device 100 to deliver fluid to fluid ejection chamber 110.
  • electrical interconnects 104 may exchange control signaling that indicates a voltage for a microelectrode in microelectrode array 108. The voltage may enable the fluid to be moved across microelectrode array 108 by attracting the fluid from one pad to another pad on microelectrode array 108.
  • the electronic device may be external to fluid device 100 and may communicate the control signaling using wireless signaling or wireline signaling. In other examples, the electronic device may be incorporated physically with fluid device 100.
  • substrate 106 may include a semiconductor material, which enables electrical interconnects 104 to transfer control signaling for fluid device 100 to deliver fluid to fluid ejection chamber 110.
  • Substrate 106 includes various elements, such as microelectrode array 108. Although not shown for clarity, substrate 106 may include various other resources to enable fluid device 100 to perform particular functions, described herein.
  • Fluid ejection chamber 110 may be a device capable of receiving fluid from fluid reservoir 102 by electrical interconnects 104 and ejecting printing fluids.
  • fluid ejection chamber 110 may include an enclosure into which printing fluid may be propagated for storing and ejecting.
  • the enclosure may include an actuator and an orifice.
  • current pulses may cause the printing fluid to heat.
  • a portion of the fluid may then be vaporized which in turn, causes droplets of the fluid to be ejected via the orifices.
  • fluid ejection chamber 110 may refer to a thermal inkjet (Tl J) or piezo inkjet (PI J ), by way of non-limiting example.
  • Tl J thermal inkjet
  • PI J piezo inkjet
  • a fluid device of a 3D printer may be used to eject an agent that may cause a build material to fuse together as part of an additive printing process.
  • the agent may or may not include colorants, such as pigments. Instead, the agent may include an additive agent to be used in the formation of a 3D mold.
  • electrical interconnects 104 may receive control signaling from an electronic device in communication with fluid device 100.
  • the control signaling indicates a microelectrode of microelectrode array 108 through which a current is to be pulsed across. By pulsing the current across one of the microelectrodes, an electrical potential is to be formed. The electrical potential attracts a droplet of printing fluid. Based on this attraction, the droplet of printing fluid is moved from fluid reservoir 102 to the microelectrode of microelectrode array 108.
  • Electrical interconnects 104 may then receive additional control signaling from the electronic device in communication with fluid device 100 indicating additional microelectrodes of microelectrode array 108 that are to receive the current pulses.
  • the additional control signaling may also indicate that certain microelectrode(s) (e.g., microelectrode(s) already receiving the current pulses) are to cease to receive current pulses.
  • the control signaling may pass a second current across a second microelectrode of microelectrode array 108. This second current would form an electric potential across the surface of the second microelectrode.
  • the first droplet of fluid would now be attracted to the second microelectrode and therefore, move from the first microelectrode to the second microelectrode in microelectrode array 108.
  • fluid device 100 may enable the provision of multiple fluids to ejection chamber 110, such as responsive to received signals.
  • fluid reservoir 102 may include a first fluid reservoir and a second fluid reservoir (or more, in some cases).
  • fluid device 100 may direct, by a microfluidic electrode of microelectrode array 108, a transfer of a first printing fluid from the first fluid reservoir to fluid ejection chamber 110.
  • a second printing fluid of the second fluid reservoir may also be transferred to fluid ejection chamber 110.
  • the first fluid from the first fluid reservoir and the second fluid from the second fluid reservoir may be mixed on an electric pad prior to the transmission to in the fluid port of fluid ejection chamber 110.
  • the control signals enable the transfer of a first fluid of the first fluid reservoir but block the transfer of a second fluid of the second fluid reservoir.
  • substrate 106 including microelectrode array 108 may be coated with a low contact angle hysteresis layer and/or a dielectric layer. This may enable selected microelectrodes of microelectrode array 108 to be hydrophobic, which may therefore affect the electrowetting. In some scenarios, movement of droplets of fluids across microelectrode array 108 may maintain a solid component of the printing fluid in suspension.
  • the printing fluid may include a capping fluid.
  • printing fluids may contain dissolved and/or suspended polymers (e.g., in addition to solids) that may also tend to settle. For example, as liquid evaporates concentration of the dissolved and/or suspended polymers may increase leading to increased viscosity. Thus, the quality of a printed item is decreased when fluid device 100 is uncapped for a period of time. Therefore, propagating a capping fluid may be propagated toward fluid ejection chamber 110 allows fluid ejection chamber 110 to remain in a “capped” state while not in use.
  • the operation of fluid device 100 described herein may enable the printing fluid to be micro-recirculated.
  • components of fluid ejection chamber 110 e.g., fluidic dies of a thermal inkjet device
  • recirculation may be of interest to dissipate thermal buildup at portions of fluid ejection chamber 110.
  • droplets of printing fluid may be recirculated through channels of fluid ejection chamber 110. This dissipated the thermal buildup of fluid ejection chamber 110.
  • microelectrode array 108 performs a cooling process for the printing fluid.
  • the microelectrode array 108 may micro-recirculate the printing fluid through the fluid port of the fluid ejection chamber.
  • the printing fluid comprises an ink solvent replenishment fluid.
  • the control signals may enable delivery of the ink solvent replenishment fluid from the fluid reservoir to the fluid port of the fluid ejection chamber.
  • FIGS 2A-2B illustrate an example linear electrode to move fluids, according to an example.
  • linear electrode 200 may include feedhole region 202 and substrate 204.
  • substrate 204 includes electric pads, such as electric pad 206.
  • Further feedhole region 202 includes feedholes, such as feedhole 212.
  • Figures 2A and 2B also include printing fluid reservoir 208.
  • linear electrode 200 includes a ground electrode and a driving electrode (illustrated in Figure 4). The surface of the ground electrode and driving electrode may be hydrophobic to prevent printing fluid from wetting the surfaces of the ground electrode and the driving electrode until activated.
  • the printing fluid may be stored in fluid reservoir 208, as illustrated in Figure 2A.
  • multiple reservoirs or fluid sources may be able to provide printing fluid to linear electrode 200.
  • a voltage may be applied to electric pad 206 on the driving electrode to generate an electric potential between the ground electrode and the driving electrode. This electric potential activates printing fluid in fluid reservoir 208 to move onto electric pad 206.
  • the voltage applied to electric pad 206 may be deactivated on electric pad 206 and applied to a next electric pad along linear electrode 200.
  • the electrowetting is affected and the printing fluid is moved along linear electrode 200.
  • the printing fluid may then be driven to the bottom of a feedhole, such as feedhole 212 next to a fluid ejection chamber, such as fluid ejection chamber 110 of Figure 1 (illustrated further in Figure 3).
  • printing fluid 210 is pulled from fluid reservoir 208 to the bottom of feedhole 212 next to the ejection chamber over linear electrode 200, instead of pushed to the ejection chamber using back pressure from a pressure regulator.
  • the use of DMF techniques to move the printing fluid to feedhole for an ejection chamber allows more precision in the amount of fluid that is moved toward the ejection chamber.
  • the substitution of the pressure regulator to move the printing fluid decreases the air moved to the fluid ejection chamber which maintains the performance of the fluid device and lowers the cost and complexity of the fluid device.
  • FIG. 3 illustrates an example DMF array.
  • DMF array 300 may be an example of microelectrode array 108.
  • DMF array 300 is comprised of multiple linear electrodes, such as linear electrode 304.
  • DMF array 300 also includes feedhole region 302 and multiple fluid reservoirs, such as fluid reservoir 308.
  • fluid droplets are moved from fluid reservoir 308 to linear electrode 304 using DMF techniques.
  • a voltage is applied to a portion of linear electrode 304.
  • the voltage may be applied to an electric pad included in linear electrode 304.
  • the applied voltage then generates an electrical potential between a driving electrode and a ground electrode. This electric potential draws a droplet of fluid, such as fluid droplet 312, onto linear electrode 304.
  • additional droplets of fluid are pulled from fluid reservoir 308 and are moved across linear electrode 304.
  • the droplets of fluid are move toward feedhole region 302.
  • a voltage is applied to a portion of the linear electrode adjacent to linear electrode 304.
  • an electric potential is created which draws fluid droplet 312 from linear electrode 304 to the adjacent linear electrode.
  • the electric potentials are then continuously varied until fluid droplet 312 moves across DMF array 300 to feedhole region 302. Once fluid droplet 312 reaches feedhole region 302, fluid droplet is moved to the bottom of a feedhole and into a fluid ejection chamber.
  • Figure 4 illustrates a schematic cross-sectional diagram of an example fluid device to deliver fluids to a fluid ejection chamber.
  • Fluid device 400 includes ground electrode 402, array of microelectrodes 404, fluid channels 406A and 406B, feedhole 408, and fluid ejection chamber 410.
  • Figure 4 may include different components of fluid device 400 in different examples.
  • Fluid device 400 may be similar in structure and/or operation to fluid device 100 in Figure 1.
  • Ground electrode 402 may be used in conjunction with array of microelectrodes 404 to vary voltages of specified microelectrodes an enable the printing fluid to travel along array of microelectrodes 404 toward feedhole 408.
  • Fluid channels 406A and 406B may carry printing fluids towards and/or away from a fluid reservoir (not shown for simplicity).
  • Array of microelectrodes 404 may be supported by a substrate and may include an array of electric pads/electrical interconnects, as described previously. Electrical interconnects may exchange control signals to enable the delivery of the printing fluid toward fluid ejection chamber 410 via feedhole 408.
  • the droplet of fluid may be drawn into feedhole 408 by capillary action. For example, a surface tension created in feedhole 408 may cause the droplet of fluid to be drawn from the electric pad located below feedhole 408. Likewise, once the droplet of fluid has been drawn into feedhole 408, the fluid may continue to move toward fluid ejection chamber 410 due to the capillary action force. Once in fluid ejection chamber 410, the droplet of fluid may then be ejected and caused to deposit on an external surface, such as a print medium.
  • a controlled amount of fluid or droplets of fluid may be drawn into feedhole 408 at a time. This provides more control of the amount of fluid which is drawn into feedhole 408, unlike previous techniques where a feedhole would draw all of the fluid pushed through the fluid channels toward the feedhole.
  • Figures 5A-5D illustrate a fluid device to continuously mix printing fluids, according to an example. More specifically, Figure 5 provides an example of how printing fluids, such as a pharmaceutical fluid, may be continuously mixed in slots of an array of microelectrodes.
  • a first pharmaceutical fluid from part A and a second pharmaceutical fluid from part B enter an array of microelectrodes.
  • the first pharmaceutical fluid from part A and the second pharmaceutical fluid from part B are shifted along electronic pads of the microelectronic array by varying the voltages of each of the electronic pads (e.g., the first pharmaceutical fluid is moving down onto lower electronic pads and the second pharmaceutical fluid is moving up onto higher electronic pads).
  • the first pharmaceutical fluid from part A and the second pharmaceutical fluid from part B are merged on the array of microelectrodes.
  • the droplets are continuously merged to provide a steady flow of mixed pharmaceutical droplets.
  • the continuous mixing of the pharmaceutical fluids allows the pharmaceutical fluids to be mixed in real-time at the location of the fluid dispensing. Maintaining a constant flow of a precisely mixed fluid can dramatically affect the quality of the content resulting from the dispense fluid.
  • other types of printing fluids could be similarly mixed prior to being conveyed to an ejection chamber, consistent with the present disclosure.
  • DMF device 600 may be a fluid device, such as fluid device 100.
  • the fluid-ejection device 600 may be an inkjetprinting device.
  • the device 600 can include other components as well, such as media trays, rollers, processing hardware, communication hardware to communicate with host computing devices or removable data storage media, and so on.
  • the printhead 104 may selectively eject ink onto media like sheets of paper to form images on the media.
  • DMF device 600 includes fluid reservoir 602.
  • fluid reservoir 602 is arranged to deliver a capping fluid to a fluid ejection chamber.
  • DMF device 600 also includes substrate 604 including an array of microfluidic electrodes.
  • DMF device 600 also includes electrical interconnects 606 to receive control signals to enable delivery of capping fluid from the fluid reservoir to a feedhole of the ejection chamber, in the example of capping fluid delivery.
  • electrical interconnects 606 to receive control signals to enable delivery of capping fluid from the fluid reservoir to a feedhole of the ejection chamber, in the example of capping fluid delivery.
  • other implementations of DMF device 600 are also contemplated, such as delivery of printing fluids.
  • Figure 7 illustrates a method for operating a fluid device, according to another example.
  • Method 700 may be used by a fluid device, such as fluid device 100.
  • Method 700 may include receiving, by electrical interconnects, control signals to enable delivery of a first printing fluid from a first reservoir to a fluid port of a fluid ejection device, at 701.
  • Method 700 may also include directing, by a first microfluidic electrode from a substrate including an array of microfluidic electrodes, a first transmission of the first printing fluid from the first fluid reservoir to the fluid port of the fluid ejection device, at 702.
  • method 700 may include receiving, by the electrical interconnects, control signals to enable delivery of a second printing fluid from a second reservoir to the fluid port of the fluid ejection device, at 703. Furthermore, method 700 may include directing, by a second microfluidic electrode from the substrate including the array of microfluidic electrodes, a second transmission of the second printing fluid from the second fluid reservoir to the fluid port of the fluid ejection device, at 704. [0046] Although not shown in Figure 7 for clarity, in some examples, method 700 includes mixing the first fluid from the first fluid reservoir and the second fluid from the second fluid reservoir in the fluid port of the fluid ejection device in response to the first transmission of the first fluid from the first fluid reservoir and the second transmission of the second fluid from the second reservoir.
  • method 700 may include the array of microfluid electrodes performing a cooling process for the printing fluid, wherein the cooling process comprises micro-recirculating one of the first printing fluid and the second printing fluid through the fluid port of the fluid ejection device.
  • examples described may include various components and features. It is also appreciated that numerous specific details are set forth to provide a thorough understanding of the examples. However, it is appreciated that the examples may be practiced without limitations to these specific details. In other instances, well known methods and structures may not be described in detail to avoid unnecessarily obscuring the description of the examples. Also, the examples may be used in combination with each other.

Abstract

Dans un exemple de mise en œuvre selon des aspects de la présente invention, un dispositif à fluide comprend un réservoir de fluide conçu pour distribuer un fluide d'impression à une chambre d'éjection. Le dispositif à fluide comprend en outre un substrat comprenant un réseau d'électrodes microfluidiques. Le dispositif à fluide comprend également des interconnexions électriques destinées à recevoir des signaux de commande pour permettre la distribution de fluide d'impression depuis le réservoir vers un orifice à fluide.
PCT/US2020/052564 2020-09-24 2020-09-24 Distribution de fluide microfluidique numérique WO2022066158A1 (fr)

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PCT/US2020/052564 WO2022066158A1 (fr) 2020-09-24 2020-09-24 Distribution de fluide microfluidique numérique

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PCT/US2020/052564 WO2022066158A1 (fr) 2020-09-24 2020-09-24 Distribution de fluide microfluidique numérique

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997009176A1 (fr) * 1995-09-01 1997-03-13 Videojet Systems International, Inc. Recipient a encre et a solvant pour imprimantes a jet d'encre
US20120027942A1 (en) * 2010-07-29 2012-02-02 Felipe Miguel Joos Systems and methods for dispensing a fluid
WO2013162606A1 (fr) * 2012-04-27 2013-10-31 Hewlett-Packard Development Company, L.P. Dispositif d'éjection de fluide doté d'un chapeau à deux couches
US20200238699A1 (en) * 2017-09-20 2020-07-30 Hewlett-Packard Development Company, L.P. Fluidic dies
WO2020159518A1 (fr) * 2019-01-31 2020-08-06 Hewlett-Packard Development Company, L.P. Puce fluidique comprenant une électrode de couche de buse pour commande de fluide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997009176A1 (fr) * 1995-09-01 1997-03-13 Videojet Systems International, Inc. Recipient a encre et a solvant pour imprimantes a jet d'encre
US20120027942A1 (en) * 2010-07-29 2012-02-02 Felipe Miguel Joos Systems and methods for dispensing a fluid
WO2013162606A1 (fr) * 2012-04-27 2013-10-31 Hewlett-Packard Development Company, L.P. Dispositif d'éjection de fluide doté d'un chapeau à deux couches
US20200238699A1 (en) * 2017-09-20 2020-07-30 Hewlett-Packard Development Company, L.P. Fluidic dies
WO2020159518A1 (fr) * 2019-01-31 2020-08-06 Hewlett-Packard Development Company, L.P. Puce fluidique comprenant une électrode de couche de buse pour commande de fluide

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