WO2019236054A1 - Sous-ensembles d'éjection correspondant à un motif à former - Google Patents

Sous-ensembles d'éjection correspondant à un motif à former Download PDF

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Publication number
WO2019236054A1
WO2019236054A1 PCT/US2018/035891 US2018035891W WO2019236054A1 WO 2019236054 A1 WO2019236054 A1 WO 2019236054A1 US 2018035891 W US2018035891 W US 2018035891W WO 2019236054 A1 WO2019236054 A1 WO 2019236054A1
Authority
WO
WIPO (PCT)
Prior art keywords
ejection
pattern
fluid
substrate
subassemblies
Prior art date
Application number
PCT/US2018/035891
Other languages
English (en)
Inventor
Roberto A. Pugliese
Christie Dudenhoefer
Jeffrey A. Nielsen
Diane R. Hammerstad
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/US2018/035891 priority Critical patent/WO2019236054A1/fr
Publication of WO2019236054A1 publication Critical patent/WO2019236054A1/fr

Links

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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04581—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on piezoelectric elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/0241—Drop counters; Drop formers
    • B01L3/0268—Drop counters; Drop formers using pulse dispensing or spraying, eg. inkjet type, piezo actuated ejection of droplets from capillaries
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04516—Control methods or devices therefor, e.g. driver circuits, control circuits preventing formation of satellite drops
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/0458—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on heating elements forming bubbles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00277—Apparatus
    • B01J2219/00351—Means for dispensing and evacuation of reagents
    • B01J2219/00378—Piezoelectric or ink jet dispensers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/08—Geometry, shape and general structure
    • B01L2300/0809—Geometry, shape and general structure rectangular shaped
    • B01L2300/0819—Microarrays; Biochips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/08—Geometry, shape and general structure
    • B01L2300/0893—Geometry, shape and general structure having a very large number of wells, microfabricated wells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/04—Moving fluids with specific forces or mechanical means
    • B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
    • B01L2400/0433—Moving fluids with specific forces or mechanical means specific forces vibrational forces
    • B01L2400/0439—Moving fluids with specific forces or mechanical means specific forces vibrational forces ultrasonic vibrations, vibrating piezo elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/04—Moving fluids with specific forces or mechanical means
    • B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
    • B01L2400/0442—Moving fluids with specific forces or mechanical means specific forces thermal energy, e.g. vaporisation, bubble jet

Definitions

  • a fluidic die is a component of a fluid ejection system that ejects fluid from a reservoir onto a surface. To eject the fluid, the fluidic die includes a number of components. Specifically, the fluid to be ejected is held in an ejection chamber. A fluid actuator operates to dispel the fluid in the ejection chamber through an opening. As the fluid is expelled, a negative pressure within the ejection chamber draws additional fluid into the ejection chamber, and the process repeats.
  • FIG. 1 is a diagram of a fluidic die with ejection subassemblies that match a pattern to be formed, according to an example of the principles described herein.
  • FIG. 2 is a diagram of a fluidic die with ejection subassemblies that match a pattern to be formed, according to another example of the principles described herein.
  • FIG. 3 is a diagram of a fluidic die with a plurality of ejection subassemblies including just the set of ejection subassemblies that match a pattern to be formed, according to examples of the principles described herein.
  • Fig. 4 is a flowchart showing a method of dispensing fluid into a desired pattern via just the set of ejection subassemblies that match the pattern, according to an example of the principles described herein.
  • FIG. 5 is a diagram of a system including a substrate stage and a fluidic die with ejection subassemblies that match a pattern to be formed, according to another example of the principles described herein.
  • a fluidic die is a component of a fluid ejection system that ejects fluid from a reservoir onto a surface.
  • the fluidic die includes a number of components. Specifically, the fluid to be ejected is held in an ejection chamber.
  • a fluid actuator operates to dispel the fluid in the ejection chamber through an opening. As the fluid is expelled, a negative pressure within the ejection chamber draws additional fluid into the ejection chamber, and the process repeats.
  • Such fluidic dies are used in many applications. In one example, the fluidic die may be used in a laboratory, as part of an assay of biological fluids.
  • the fluidic die may be used in a printing operation to deposit ink in a pattern to form graphics or text.
  • the fluidic die may be used to initiate a chemical reaction between a fluid and a surface on which the fluid is deposited. While specific reference is made to a few particular examples, the fluidic die of the present specification may be used in other applications as well.
  • fluidic die are undoubtedly valuable in their ability to deposit a wide variety of fluid onto a wide variety of substrates, advances to this area may increase the value they provide.
  • some fluid ejection systems rely on components that either 1 ) move the fluidic die over the substrate or 2) move the substrate under the fluidic die. These additional components increase the complexity and cost of the fluid ejection system. The increased complexity provides more opportunity of mechanical failure of the fluid ejection system
  • the present specification describes a fluidic die and fluid ejection system that alleviate this and other issues.
  • the present fluid ejection system holds both the substrate and the fluidic die stationary during fluid deposition.
  • Ejection subassemblies that match the entire pattern to be deposited are activated such that the pattern is formed without movement of the substrate and/or fluidic die.
  • the desired pattern is a star shape
  • just those ejection subassemblies that align with the entirety of the star shape are activated to deposit the fluid on the substrate in a pattern that matches the star shape. That is, in this example, the pattern to be printed is in direct alignment with the fluidic ejection devices above, due to the construction of the fluidic die.
  • Such a system results in reduced image degradation, with a smaller, more inconspicuous image.
  • the fluidic die includes an array of ejection subassemblies. Each ejection subassembly Is held stationary during fluid deposition. Furthermore, each ejection subassembly includes 1 ) an ejection chamber to hold a volume of fluid, 2) an opening, and 3) a fluid actuator to eject the volume of fluid through the opening in this example, just the set of ejection subassemblies that match a pattern to be formed on a stationary substrate are activated.
  • the present specification also describes a method. According to the method, a substrate is held stationary during fluid deposition. Content corresponding to a pattern to be formed on the substrate is received. From an array of ejection subassemblies, a set of ejection subassemblies that align with the pattern to be formed are activated, such that the pattern is formed on the substrate
  • the present specification also describes a fluid ejection system.
  • the fluid ejection system includes at least one fluidic die.
  • the system also includes a frame to hold the at least one fluidic die and a substrate stage to hold the substrate stationary during fluid deposition.
  • the system also includes a controller to selectively activate the set of ejection subassemblies that match the pattern.
  • fluid deposition in particular patterns in a non-scanning fashion, i.e., neither the fluidic die nor the substrate move relative to one another during fluidic deposition; 2) reduces the complexity and cost of a fluid ejection system; 3) reduces printing artifacts from non-sphericai ejected drops which may result from fluid dynamics in a scanning system; 4) reduces the effects of satellite drops thus increasing deposition quality; and 5) may increase the overall speed of the fluid deposition.
  • the devices disclosed herein may address other matters and deficiencies in a number of technical areas.
  • fluid die refers to a component of a fluid ejection system that ejects fluid and includes a number of ejection subassemblies.
  • the term“ejection subassembly” refers to an individual component of a fluidic die that ejects fluid.
  • the ejection subassembly may be referred to as a nozzle and includes at least an ejection chamber to hold an amount of fluid and an opening through which the fluid is ejected.
  • the ejection subassembly includes an actuator disposed within the ejection chamber.
  • Fig. 1 is a diagram of a fluidic die (100) with ejection subassemblies (102) that match a pattern to be formed on a substrate (1 10), according to an example of the principles described herein.
  • the fluidic die (100) is a component of a fluid ejection system.
  • the fluidic die (100) may include a substrate, such as a silicon plate, on which the ejection subassemblies (102) are formed.
  • the ejection subassemblies (102) are stationary. That is, the fluidic die (100) includes an array of ejection subassemblies (102) that do not move relative to the substrate (1 10) during fluid deposition.
  • the substrate (1 10) on which the fluid is deposited may take many forms.
  • the fluid may be selected from ink, a fluid to chemically alter a substrate surface for example during chemical analysis, a solvent or aqueous-based pharmaceutical compound, as well as aqueous-based biomolecules including proteins, enzymes, lipids, antibiotics, Mastermix, DNA samples, cells, or blood components, ail with optional additives, such as surfactants or glycerol.
  • the substrate (1 10) may be paper on which fluid ink is deposited in another example, the substrate (1 10) may be a biological sample on which a fluid is deposited.
  • the fluid may be chemical in nature and may initiate a chemical reaction with another substance deposited on the substrate (1 10) or the substrate (1 10) itself.
  • MALDi matrix-assisted laser desorption/ionization imaging
  • the substrate (1 10) and fluidic die (100) may be used in a variety of scenarios to deposit a variety of fluids in addition to those described above.
  • the fluidic die (100) includes any number of ejection subassemblies (102).
  • a single ejection subassembly (102) is indicated with a reference number.
  • the ejection subassemblies (102) may be formed in any arrangement.
  • the ejection subassemblies (102) may be formed in a grid array.
  • the size of the array that is the number of ejection subassemblies (102) in the array, may be selected based on the application. For example, to print small matrix codes, the number of ejection subassemblies (102) in the array may be selected to be at least as large as the desired matrix code to be printed.
  • each ejection subassembly (102) aligned with the pattern may eject fluid to print the entire matrix code without moving the substrate (1 10) and/or fluidic die (100). While Fig. 1 depicts a particular number of ejection subassemblies (102) to form a desired pattern, any number of ejection subassemblies (102) may be arranged in an N x M array, where N and M may be any value including 1.
  • each ejection subassembly (102) includes various components.
  • an ejection subassembly (102) includes an ejection chamber (104) to hold an amount of fluid to be ejected, an opening (106) through which the amount of fluid is ejected, and a fluid actuator (108), disposed within, or outside of, the ejection chamber (104), to eject the amount of fluid through the opening (106).
  • the fluid actuator (108) may include a firing resistor or other thermal device, a piezoelectric element, or other mechanism for ejecting fluid from the ejection chamber (104).
  • the fluid actuator (108) may be a firing resistor. The firing resistor heats up in response to an applied voltage. As the firing resistor heats up, a portion of the fluid in the ejection chamber (104) vaporizes to generate a bubble. This bubble pushes fluid out the opening (106) and onto the print medium.
  • the fluidic die (100) may be a thermal Inkjet (Tl J) fluidic die (100)
  • the actuator (108) may be a piezoelectric device. As a voltage is applied, the piezoelectric device changes shape which generates a pressure pulse in the ejection chamber (104) that pushes the fluid out of the opening (106) and onto the substrate (1 10).
  • the fluidic die (100) may be a piezoelectric inkjet (PIJ) fluidic die (100).
  • a set of ejection subassemblies (102) that match a pattern to be formed on a stationary substrate (1 10) are activated.
  • a pattern in the form of the symbol 1 is to be formed via fluid deposition on the substrate (1 10).
  • just those ejection subassemblies (102) that correspond to the pattern of a ⁇ ” are activated.
  • the set of ejection subassemblies (102) to be activated are indicated
  • Fig. 1 depicts a pattern corresponding to the number“1 any pattern including, graphics and text, may be used and the corresponding ejection subassemblies (102) activated.
  • the deposition of the fluid to form the pattern may occur during a single ejection event
  • a single ejection event indicates that all ejection subassemblies (102) that correspond to the pattern are activated simultaneously, and just one time.
  • multiple ejection events may be executed to form the pattern in either case, the fluidic die (100) size, and the ejection subassemblies (102) that are activated, may correspond to the entirety of the pattern, i.e., the ⁇ ”, to be formed. Doing so allows an entire pattern to be formed without having to move the fluidic die (100) and/or the substrate (1 10). Operating the fluidic die (100) in this fashion simplifies the fluid ejection system, increases the quality of fluid deposition, and increases the rate at which the pattern may be formed.
  • the fluidic die (100) by using inkjet components such as ejection chambers (104), openings (108), and fluid actuators (108) disposed within the ejection chambers (104), enables low-volume dispensing of fluids such as those used in life science and clinical applications.
  • inkjet components such as ejection chambers (104), openings (108), and fluid actuators (108) disposed within the ejection chambers (104)
  • ejection subassemblies (102) allows the fluidic die (100) to dispense individual drops of between approximately 1.0 and 500 picoliters in volume.
  • FIG. 2 is a diagram of a fluidic die (100) with ejection
  • the fluidic die (100) includes an array of ejection subassemblies (102) wherein selected ejection subassemblies (102) are activated to match a pattern to be deposited on a substrate (1 10).
  • which ejection subassemblies (102) are activated can be varied for a particular fluidic die (100). For example, a first set of ejection subassemblies (102) may be activated to produce a pattern such as that depicted in Fig. 1 .
  • the set of ejection subassemblies (102), as indicted by unfilled circles, also may change based on the desired pattern.
  • a controller indicates which of the ejection subassemblies (102) are to be activated to form the particular pattern.
  • the array of ejection subassemblies (102) found on the fluidic die (100) may be more than just the set that are activated so as to match a particular pattern to be formed on the substrate (1 10). That is, during ejection of the fluid to form the pattern on the substrate (1 10) less than all of the ejection subassemblies (102) of the array of ejection subassemblies (102) may be utilized for fluid ejection.
  • FIGs. 1 and 2 depict fluid deposition on a fiat substrate (1 10), the fluidic die (100) and the fluid ejection system in which it is disposed may be a three-dimensional printing system meaning that either the substrate (1 10) is three dimensional or that the printing system forms a three- dimensional object.
  • Fig. 3 is a diagram of a fluidic die (100) with an array of ejection subassemblies (102) including just the set of ejection subassemblies (102) that match a pattern to be formed on the substrate (1 10), according to examples of the principles described herein in other words, in the example depicted in Fig.
  • the fluidic die (100) included ejection subassemblies (102) that may not have been active during the formation of a particular pattern.
  • each ejection subassembly (102) in the array is active for the formation of a particular pattern.
  • the fluidic die (100) of the example depicted in Fig. 3 may have an array layout to match, and form, a single particular pattern on a substrate (1 10).
  • all ejection subassemblies (102) of the array are utilized for fluid ejection.
  • the fluidic die (100) of Fig 3 may avoid circuitry to selectively activate particular ejection subassemblies (102) as each ejection subassembly (102) in the array is used with each ejection operation. Such a fluidic die (100) also promotes high reproducibility.
  • Fig. 4 is a flowchart showing a method (400) of dispensing fluid into a desired pattern via just the set of ejection subassemblies (Fig. 1 , 102) that match the pattern, according to an example of the principles described herein.
  • the fluid ejection system may include a substrate stage to hold (block 401 ) the substrate (Fig. 1 , 1 10) stationary. Doing so may ensure that the fluid ejected from the fluidic die (Fig. 1 , 100) strikes the substrate in its intended spot. Moreover, holding (block 401 ) the substrate (Fig.
  • Satellite drops form during fluidic ejection. Satellite drops follow a primary drop as a fluid actuator (Fig. 1 , 108) is activated if a substrate (Fig. 1 , 1 10) or a fluidic die (Fig 1 , 100) is moving during printing, these satellite drops can land to the side of the primary drop, resulting in two separate spots or a tear-shaped single drop. These satellite drops result in less precise printing and therefore a reduction in print quality.
  • environmental conditions such as an air conditioner in an office space may move the substrate (Fig. 1 , 100) on which the pattern is to be formed. Holding (block 401 ) the substrate (Fig 1 , 1 10) stationary counters such conditions.
  • Content is then received (block 402) corresponding to a pattern to be formed on the substrate (Fig. 1 , 1 10).
  • a pattern to be formed on the substrate (Fig. 1 , 1 10).
  • the pattern may be selected via a user interface on a computing device. That is a user may create, or select, text, an image, or another graphic to be formed on a substrate (Fig. 1 , 100). Data representing this pattern is passed to a controller which controls the selective activation of particular ejection subassemblies (Fig 1 , 102).
  • a user may desire to print, with ink, a Quick Response (QR) code on a sheet of paper.
  • QR Quick Response
  • a user may desire to dispense a biological fluid in a particular pattern
  • a user may desire to print a chemical fluid onto a surface, which chemical fluid is to alter the properties of the surface.
  • the controller sends activation signals to various ejection subassemblies (Fig 1 , 102) to form the desired pattern.
  • the various ejection subassemblies (Fig. 1 , 102) to which the activation signal is sent are those which align with the entirety of the pattern. That is, from an array of ejection subassemblies (Fig. 1 , 102) that make up the fluidic die (Fig 1 , 100), just those that align with the pattern to be formed are activated (block 403).
  • this may mean that less than all of the array of ejection subassemblies (Fig. 1 , 102) are activated, such as the case depicted in Figs. 1 and 2 where the array of ejection subassemblies (Fig. 1 , 102) is greater than the set of ejection subassemblies (102) that align with the pattern to be formed. In other examples, this may mean that all of the array of ejection subassemblies (Fig. 1 , 102) are activated. Such as the case as depicted in Fig. 3, where the array includes just those ejection subassemblies (Fig. 1 , 102) that pertain to a particular pattern to be formed on the substrate.
  • those ejection subassemblies (Fig. 1 , 102) that are activated may be activated simultaneously. For example, as depicted in Fig. 1 , if the desired pattern corresponds to the symbol“1 the ejection
  • each ejection subassembly (Fig. 1 , 102) may be activated one time to form the pattern.
  • each ejection subassembly (Fig. 1 , 102) may be activated multiple times, either simultaneously, or asynchronously, to form the image in either case, the substrate (Fig 1 , 1 10) and the fluidic die (Fig. 1 , 100) are held stationary.
  • a pattern can be formed on a substrate (Fig. 1 , 1 10), in a highly repeatable fashion, without the reliance on components to mechanically move the fluidic die (Fig. 1 , 100) and/or the substrate (Fig. 1 , 1 10).
  • Fig. 5 is a diagram of a system (512) including a substrate stage (516) and fluidic die (100-1 , 100-2) with ejection subassemblies (102) that match a pattern to be formed on a substrate (1 10), according to another example of the principles described herein.
  • the substrate (1 10) may be held in place.
  • a substrate stage (516) may be implemented.
  • the substrate (1 10) may be secured to the substrate stage (516) during fluidic deposition in any number of ways. For example, tabs or clamps may be affixed to the substrate stage (516).
  • the tabs are rotated out of the way such that the substrate (1 10) may be placed on the substrate stage (516). After the substrate (1 10) is positioned as desired, the tabs or clamps can then be rotated back such that they couple the substrate (1 10) to the substrate stage (516).
  • the system (512) also includes a frame (514) to hold at least one fluidic die (100)
  • the frame (514) is a component of the fluid ejection system (512) that holds any number of fluidic die (100) and their corresponding ejection subassemblies (102).
  • the frame (514) is removable from the fluid ejection system (512), for example as a replaceable cassette.
  • a removable frame (514) may include ejection subassemblies (100) on a bottom side and an equal number of or fewer reservoirs on a top side, which reservoirs receive fluid and are fluidly coupled to the ejection subassemblies (102).
  • the frame (514) is integrated into a cartridge that contains the fluid to be ejected.
  • the frame (514) may be formed of any material, such as plastic in one specific example, the frame (514) is an epoxy mold compound and is injection molded. In some examples the frame (514) also houses circuitry to activate each of the fluid actuators (Fig. 1 , 108). That is, each of the fluid actuators (Fig. 1 , 108) may be individually addressable and may activate based on control signals from a fluid ejection controller (518). [0040] In the example depicted In Fig. 5, the frame (514) holds multiple fluidic die (100-1 , 100-2). While Fig. 5 depicts two fluidic die (100), the frame (514) may be configured to hold any number of fluidic die (100). In this example, the ejection subassemblies (102) of the fluidic die (100-1 , 100-2) may simultaneously deposit fluid, either onto one substrate (1 10) on the substrate stage (516) or multiple substrates (1 10) on the substrate stage (516).
  • the system (512) also includes a controller (518).
  • the controller (518) receives the data corresponding to a pattern to be formed, and converts if info a signal that can be used to selectively activate particular ejection subassemblies (102). That is, a user may create a particular pattern, such as a particular symbol.
  • the controller (518) may identify from this data, which of the ejection subassemblies (102) should be activated to generate this image.
  • the controller (518) then passes signals to these ejection subassemblies (100) such that upon their activation fluid is ejected, which strikes the substrate (1 10) and forms the image thereon.
  • a fluidic die 1 enables fluid deposition in particular patterns in a non-scanning fashion, i.e., neither the fluidic die nor the substrate move during fluidic deposition; 2) reduces the complexity and cost of a fluid ejection system; 3) reduces printing artifacts from non-spherical ejected drops which may result from fluid dynamics in a scanning system; 4) reduces the effects of satellite drops thus increasing deposition quality; and 5) may increase the speed of overall fluid deposition.
  • the devices disclosed herein may address other matters and deficiencies in a number of technical areas.

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  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

La présente invention concerne, selon un exemple, une matrice fluidique. La matrice fluidique comprend un réseau de sous-ensembles d'éjection. Chaque sous-ensemble d'éjection est fixe lors du dépôt de fluide et comprend 1) une chambre d'éjection pour contenir un volume de fluide, 2) une ouverture, et 3) un actionneur de fluide pour éjecter le volume de fluide à travers l'ouverture. Dans cet exemple, un ensemble de sous-ensembles d'éjection qui correspondent à un motif à former sur un substrat fixe sont activés.
PCT/US2018/035891 2018-06-04 2018-06-04 Sous-ensembles d'éjection correspondant à un motif à former WO2019236054A1 (fr)

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PCT/US2018/035891 WO2019236054A1 (fr) 2018-06-04 2018-06-04 Sous-ensembles d'éjection correspondant à un motif à former

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Application Number Priority Date Filing Date Title
PCT/US2018/035891 WO2019236054A1 (fr) 2018-06-04 2018-06-04 Sous-ensembles d'éjection correspondant à un motif à former

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Citations (4)

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US6402279B1 (en) * 2000-10-30 2002-06-11 Hewlett-Packard Company Inkjet printhead and method for the same
US20060066688A1 (en) * 2004-09-29 2006-03-30 Fuji Photo Film Co., Ltd. Liquid ejection head, image forming apparatus, and liquid ejection head manufacturing method
US20090225131A1 (en) * 2008-03-10 2009-09-10 Chien-Hua Chen Fluid Ejector Structure and Fabrication Method
RU171905U1 (ru) * 2017-03-07 2017-06-20 Ренат Фархатович Гайнутдинов Печатающая головка струйного 3D принтера

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6402279B1 (en) * 2000-10-30 2002-06-11 Hewlett-Packard Company Inkjet printhead and method for the same
US20060066688A1 (en) * 2004-09-29 2006-03-30 Fuji Photo Film Co., Ltd. Liquid ejection head, image forming apparatus, and liquid ejection head manufacturing method
US20090225131A1 (en) * 2008-03-10 2009-09-10 Chien-Hua Chen Fluid Ejector Structure and Fabrication Method
RU171905U1 (ru) * 2017-03-07 2017-06-20 Ренат Фархатович Гайнутдинов Печатающая головка струйного 3D принтера

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