EP3752365B1 - Tête d'impression et procédé d'impression - Google Patents

Tête d'impression et procédé d'impression Download PDF

Info

Publication number
EP3752365B1
EP3752365B1 EP19706369.6A EP19706369A EP3752365B1 EP 3752365 B1 EP3752365 B1 EP 3752365B1 EP 19706369 A EP19706369 A EP 19706369A EP 3752365 B1 EP3752365 B1 EP 3752365B1
Authority
EP
European Patent Office
Prior art keywords
capillary
print head
actuator
aerosol
head according
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP19706369.6A
Other languages
German (de)
English (en)
Other versions
EP3752365A1 (fr
Inventor
Martin Ungerer
Andreas Hofmann
Rudolf Scharnowell
Ulrich Gengenbach
Ingo SIEBER
Achim Wenka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karlsruher Institut fuer Technologie KIT
Original Assignee
Karlsruher Institut fuer Technologie KIT
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 Karlsruher Institut fuer Technologie KIT filed Critical Karlsruher Institut fuer Technologie KIT
Publication of EP3752365A1 publication Critical patent/EP3752365A1/fr
Application granted granted Critical
Publication of EP3752365B1 publication Critical patent/EP3752365B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/11—Ink jet characterised by jet control for ink spray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/08—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators
    • B05B1/083—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators the pulsating mechanism comprising movable parts
    • 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
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/045—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber the gas and liquid flows being parallel just upstream the mixing chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2483—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device the supplying means involving no pressure or aspiration, e.g. means involving gravity or capillarity
    • 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
    • B41J2/02—Ink jet characterised by the jet generation process generating a continuous ink jet
    • B41J2/025—Ink jet characterised by the jet generation process generating a continuous ink jet by vibration
    • 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
    • B01L2300/12—Specific details about materials
    • B01L2300/123—Flexible; Elastomeric
    • 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
    • B01L2400/0406—Moving fluids with specific forces or mechanical means specific forces capillary forces
    • 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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/02—Air-assisted ejection

Definitions

  • the invention relates to a print head according to the first claim and a printing method according to the ninth claim.
  • Jet printheads are a central component in printing technology. With them, liquids (inks) are removed from a reservoir, for example a cartridge, and accelerated in the direction of a surface to be printed for the printing process. The printing is dosed, i.e. the liquids are only transported in individual drops onto the surface to be printed. Various actuator and dosing concepts are used for this, such as piezoelectric, electrostatic or thermally based.
  • the so-called drop-on-demand technique is preferably used, in which one or more drops are released only when a control signal is present.
  • a quasi-continuous printing process, the so-called continuous drop method takes place by repetitions of the control signal, preferably with repetition frequencies of more than 1 kHz.
  • various printing technologies are known, which differ in particular by the function of the print head used, in particular the non-contact piezo inkjet technology, the electrohydrodynamic inkjet technology, the aerosol jet technology, but also the ultrasonic dosing method, in which the printing liquid comes into direct contact with the substrate to be printed via a meniscus.
  • the print head mentioned at the outset is used in particular and preferably in the field of non-contact digital jet printing methods for functional printing, ie printing of functional structures (eg conductor tracks, resistors, capacitors, biological substances, etc.).
  • functional structures eg conductor tracks, resistors, capacitors, biological substances, etc.
  • the piezo inkjet technique is the most widespread method.
  • a piezo element acts on a volume of ink in the printing nozzle, with a pressure or pressure pulse being exerted on the printing ink, which causes at least one drop of ink to be ejected from the printing nozzle and sprayed onto the object to be printed.
  • Inks in a preferred viscosity range of between 5 and 40 mPa ⁇ s are used for printing.
  • a further viscosity range is covered in particular by aerosol jet technology and electrohydrodynamic inkjet technology, with aerosol jet technology having the additional advantage of producing structures in the single-digit mm range, despite major topology jumps on the surface to be printed, without vertical Tracking the print nozzle to be able to print.
  • the aerosol jet printing method disclosed includes in particular generation of an aerosol from ink, concentration of the aerosol, transport of the aerosol with gas to the print nozzle arrangement, concentration of the aerosol, for example in the aforementioned chamber, and hydrodynamic focusing of the aerosol jet in the print nozzle.
  • the aerosol is generated either pneumatically or by ultrasound in the separate chamber of the printhead.
  • the generated aerosol is conveyed with the help of a transport gas via line systems to the pressure nozzle and bundled there by means of a focusing gas (also an enveloping flow).
  • the operating mode of the system is immutable.
  • the aerosol jet Before the actual printing process, the aerosol jet is adapted to the respective conditions by setting various parameters (in particular volume flow of the transport gas, volume flow of the focusing gas, choice of nozzle and atomizer, etc.). As soon as the aerosol jet is stable, printing can begin. The aerosol volume flow remains constant throughout the printing process, the jet intensity is not regulated and not varied. The dosing quantity per time is therefore constant. In order to be able to create interruptions in the printed image, the aerosol jet must be interrupted after the nozzle. This is done using a mechanical ink catcher that is positioned between the nozzle and the substrate.
  • the disadvantage of the aforementioned method is that the print head must always be aligned with the earth’s gravitational field and therefore cannot be aligned with the surface to be printed at will without additional measures such as mechanical decoupling of the chamber for aerosol generation and the nozzle.
  • This local separation into several subsystems requires a line system to convey the aerosol flow to the pressure nozzle. This increases the dead volume.
  • long lines can influence the aerosol (e.g. change in droplet size due to agglomeration and merging of small droplets, deposits of droplets on the walls).
  • the line systems are then contaminated with a substance and must be cleaned or replaced if another fluid is to be printed without contamination.
  • a further limitation results from the design of the print head due to the system.
  • a complete cleaning or intermediate cleaning (e.g. when changing the liquids to be printed) is achieved in particular by separating the equipment of aerosol generation and printing nozzle is more difficult and is therefore more complex than, for example, a comparable inkjet printing system.
  • the need for separate subsystems for conveying the fluid to be printed is also limiting for the aforementioned ultrasonic dosing method.
  • Printing three-dimensional structures on the surface of a substrate poses a particular challenge when using the aforementioned technologies.
  • one- or multi-axis relative movements between the print head and substrate must be enabled, for example by means of an electromechanical positioning system.
  • axis acceleration and deceleration occur, which are recorded by the print head.
  • the printing process occurs simultaneously with one of the aforementioned axis accelerations and decelerations, e.g. with a constant volumetric aerosol flow rate, the amount of ink deposited on the substrate will inevitably vary with each applied change.
  • the properties of the printed structure e.g. resistance of a printed electrode
  • depend on its geometry e.g. changes in direction, radii, lengths, topography, etc.
  • one object of the invention is to improve the aforementioned jet print head in such a way that the aforementioned limitations and disadvantages and their effects are avoided or reduced.
  • one object is to propose a jet print head which is also suitable for printing on three-dimensional structures of the type mentioned at the outset.
  • Another object is to propose a jet print head that is suitable for a faster changeover compared to conventional systems while avoiding cross-contamination and/or liquid carryover of the liquids to be printed in the printing system.
  • a further object is to propose a corresponding printing method, in particular for printing structures, preferably functional structures, on a surface using the jet print head.
  • the invention is based on a print head comprising a capillary for a liquid as the printing fluid with a nozzle opening which opens into an antechamber.
  • the capillary adjoins an actuator directly or indirectly via other components such as an elastic element and/or fastening means for the capillary (e.g. clamping means), i.e. it is in solid contact with it.
  • the piezoelectric actuator is preferably firmly connected to the capillary.
  • said antechamber has an outlet opening aligned with the nozzle opening of the capillary, i.e. the axes of symmetry of the capillary and outlet opening preferably coincide.
  • inlet openings opening into the antechamber are provided for a guide gas which, together with the pressure fluid, leaves the antechamber via the outlet opening in the direction of a surface to be printed.
  • the actuator is preferably a piezo actuator.
  • electromechanical actuators are also suitable, or in particular in the case of very small designs, electrostatic actuators are also suitable as actuators.
  • the actuator consists of a plurality of components, including also actuator-passive components.
  • Actuator-passive components include, for example, at least one elastic element, at least one elastic cup spring element and/or at least one elastic bending element or bending strip as a connecting component between the capillary and the print head housing. They serve, in particular, to guide the capillary and preferably allow only unidirectional axial mobility of the capillary in the print head housing, which is flexible about a basic position. Actuator-passive components preferably also include a lever mechanism between an actuator-active component of the actuator, for example a piezoelectric transducer (piezoelectric actuator), which is preferably in contact with the actuator-passive components, more preferably can be mechanically excited by them.
  • piezoelectric transducer piezoelectric actuator
  • the liquid from the capillary is first atomized directly at the nozzle opening with an axial oscillating movement of a capillary and forms an aerosol with the guide gas.
  • the aerosol is thus not conducted into the antechamber in a preconditioned manner, but rather forms in an advantageous manner at as late a point in time as possible just shortly before the printing process in the antechamber.
  • the capillary preferably a glass capillary, is connected to at least one reservoir, preferably at least one cartridge for the liquid (pressure fluid).
  • the capillary thus has non-continuous or preferably continuously conveying feeding means for the pressure fluid into the capillary, preferably at the end of the capillary (proximal end of the capillary) opposite the nozzle opening (distal end of the capillary). This is preferably done without contact by means of a supply line either to the capillary, for example through a line into the named proximal end of the capillaries protruding outlet opening of the supply line, or by means of an elastic hose connection preferably between the proximal end of the capillary and said outlet opening of the supply line.
  • the supply line represents a connection between at least one reservoir of the fluid to be printed and the capillary.
  • the fluid is preferably conveyed capillary, ie fluid losses in the capillary via the nozzle opening during the printing process are compensated by capillary suction of fluid components.
  • the feed line to be provided with its own active fluid feed means (feed pump).
  • a further optional configuration comprises at least one mixing chamber for mixing or homogenizing fluid components, for example from different reservoirs and brought together in the mixing chamber. It is within the scope of the invention to locate said mixing chamber functionally in the capillary and to provide a separate supply line directly into the capillary for each reservoir involved.
  • the capillary is preferably connected to the supply line via a preferably flexible hose to improve the mobility of the print head and to reduce the movable masses required for a positioning movement of the print head.
  • the liquid is transported via the hose through the capillary and the nozzle opening into the antechamber.
  • the transport preferably takes place, i.e. not necessarily without a feed pump.
  • the at least one inlet opening for the guide gas is preferably arranged at the side of the capillary.
  • the alignment of the at least one inlet opening and thus the inlet opening is also preferably aligned at an acute angle to the axis of symmetry of the capillary towards the outlet opening, ie the alignment consists vectorially of a orthogonal and a vector aligned parallel to the axis of symmetry, the parallel partial vector pointing in the direction of the outlet opening as viewed from the nozzle opening.
  • said alignment crosses the axis of symmetry of the capillary within the antechamber. If the fluid to be printed from the capillary is a liquid or a suspension and emerges from the nozzle opening as a sprayed jet, this jet crosses the flow of the guide gas. When they meet, an aerosol is formed.
  • a key feature relates to the arrangement of the actuator in the print head, its arrangement in relation to the capillary and the design of the actuator movement.
  • the actuator is preferably fixed in the antechamber of the print head, more preferably opposite to the outlet opening.
  • the actuator movement serves to move the capillary relative to the antechamber and includes forward and backward movements, preferably only axially to the axis of symmetry of the capillary and outlet opening.
  • the fixed points i.e. the attachment points of the actuator in the print head on the one hand and by the arrangement of the receptacle for the capillary on, in or above the actuator away from the fixed points on the other.
  • the attachment for fixing the piezoelectric actuator in the antechamber takes place by means of gluing, clamping or screwing.
  • the actuator preferably a piezo actuator
  • the actuator preferably a piezo actuator
  • it preferably comprises a plate, disc, ring, cross or bar-shaped flexural oscillating actuator, at least one preferably ring-shaped translational actuator or one or more shearing oscillating actuators with a preferably centered on the actuator for the capillary.
  • the oscillating bending actuator and the aforementioned attachment points (fixed points) to the antechamber extend symmetrically, preferably rotationally symmetrically, around the receptacle and thus around the axis of symmetry of the capillary and the outlet opening.
  • a preferred embodiment provides for the attachment points to be designed as fixed supports for the oscillating actuators in order to achieve the highest possible oscillating amplitudes.
  • a piezo bending vibration actuator which is preferably fixed elastically at both ends, preferably reaches the maximum amplitude in its middle. They are preferably formed by at least two individual points or, in particular in the case of a plate-shaped or disc-shaped oscillating bending actuator, by support lines. If an actuator is preferably firmly clamped on one side only, the maximum amplitude occurs at the other end.
  • An alternative configuration of the piezo actuator includes a stack of layers of disk-shaped individual piezo actuators, the deflections of which add up to form an overall deflection.
  • so-called D31 converters or shear actuators can also be used, the actuator movement of which can be tapped transversely to the applied electrical field and is used for the axial movement of the capillary.
  • these configurations are significantly stiffer and are particularly suitable for non-resonant guided actuator movements, for example for square-wave or sawtooth-shaped oscillations or individual impact movements.
  • the capillary is moved back and forth axially by the piezoelectric actuator, preferably in an oscillating manner, either in resonance or following a predeterminable, preferably cyclic curve (oscillation, eg sawtooth, rectangular, etc.).
  • the capillary and thus also its nozzle opening is moved back and forth with each movement cycle, with each change of direction, deceleration or jerk, an acceleration acts on the capillary and nozzle opening and thus also on the pressure fluid located in the nozzle opening. If the nozzle opening is accelerated during retraction, i.e. by a distal change of direction, i.e.
  • the mass inertia of the pressure fluid alone causes fluid components to be pressed out of the nozzle opening and drops or other fluid components to be detached, particularly on the nozzle outlet surface of the capillary wall.
  • drops of the pressure fluid are thus detached from the nozzle opening and are absorbed by the guide gas.
  • the components of the guide gas and the detached components of the printing fluid form an aerosol that is conducted from the antechamber via the outlet opening to the surface to be printed. Printing takes place immediately after aerosol formation, which advantageously reduces the risk of segregation.
  • the aligned arrangement of nozzle opening and outlet opening is particularly advantageous for the aforementioned process, since the detaching droplets not only form an aerosol due to their speed and mass inertia during detachment, but also an impulse on the aerosol flow in the direction of the outlet opening and thus the exercise surface to be printed.
  • the aerosol flow speed is already high at the nozzle exit.
  • the guide gas flow which is initially formed around the aerosol flow preferably as a sheath flow and is also at least partially mixed in the antechamber towards the outlet opening, the aerosol flow is focused in the direction of the center of the jet. It is advantageous here that the droplets contribute significantly to the total momentum of the aerosol due to a density that is significantly higher than that of the guide gas.
  • the guide gas flow preferably only part of the guide gas flow is transferred into the aerosol, i.e. it absorbs the droplets that are released.
  • the remaining portion of the guiding gas flow leaves the antechamber together with the aerosol flow formed via the outlet opening. Since the aerosol flow is concentrated around the axis of symmetry of the capillary and thus around the outlet opening due to the aforementioned momentum consideration, the remaining portion of the sheath gas flow is displaced into the edge areas of the outlet opening and thus forms a sheath flow around the aerosol flow.
  • This bypass flow reduces contact of the aerosol with the inner wall of the outlet opening, thereby reducing accumulation of aerosol components and advantageously also clogging of the outlet opening with the pressurized fluid.
  • the mass flow of the aerosol can be regulated, preferably by changing the process parameters of fluid pressure in the capillary, by changing the voltage amplitude and frequency when driving the actuator and by changing the control signal, e.g. from a sine function to another periodic function (e.g. sawtooth shape, rectangular shape) or by a Superposition with a phase-shifted periodic signal.
  • a sine function e.g. sawtooth shape, rectangular shape
  • a Superposition with a phase-shifted periodic signal e.g. sawtooth shape, rectangular shape
  • the volume flow of detached drops and thus also the speed of the ongoing separation and atomization of the liquid, i.e. the pressure fluid at the nozzle opening, can be adjusted and regulated.
  • the frequency remaining the same the amount of flow in particular, but also the droplet size of detached droplets and thus also the aerosol properties, can be adjusted with the amplitude height.
  • the size of the detached droplets an essential feature of a developing aerosol, can be adjusted by the frequency of the axial reciprocating movement.
  • the frequency is preferably between 50 kHz to 2 MHz. through on
  • the scattering area of the detached droplets which extends conically around the axis of symmetry, can be increased by the lateral harmonic frequencies impressed on the fundamental oscillation.
  • the aforesaid scattering area of the detached droplets which extends conically around the axis of symmetry, can also be preset by designing the nozzle opening, in particular its diameter, a sharp-edged capillary edge produced by a breaking edge of the capillary. Likewise, a capillary edge that does not extend orthogonally to the capillary axis enables a preferred direction of deflection of the detached drops.
  • the behavior of the aerosol generation can be controlled by the process parameters mentioned. In the final installation state, these parameters are reduced to the following main influencing factors: frequency, mode of vibration, amplitude, fluid pressure. If the excitation of the piezo element is switched off, the generation of aerosol is interrupted. No more liquid is ejected from the nozzle (neither in aerosol form nor in any other form). This binary behavior is used to switch off the aerosol jet if there is an interruption in the printed image, without the need for a mechanical ink catcher.
  • a change in the individual parameters frequency, mode of oscillation, amplitude and fluid pressure or a combination of these parameters leads to a change in the mass flow of the aerosol (liquid) leaving the nozzle opening and thus the outlet opening, which means that acceleration of the axes of the pressure system has an influence on the homogeneity of the Print image (homogeneity of the printed structures) can be compensated.
  • the capillary preferably borders on a piezo actuator, i.e. it is in solid contact with it.
  • the piezoelectric actuator has a receptacle for the capillary.
  • the receptacle connects to the capillary and also performs the same axially oscillating or oscillating movements that are preferably imposed by the piezoelectric actuator. They form a common vibration system.
  • the receptacle serves as part of the oscillating mass on the oscillating actuator.
  • one embodiment of the receptacle provides for the piezo actuator of the print head to be configured preferably with clamping means in which the capillary is clamped in a non-positive manner.
  • clamping means preferably consist of a bore in the actuator or a preferably elastic component that is mounted or inserted on the actuator and that preferably has a transition fit with the piezo actuator, preferably with a sliding fit (according to: Dubbel: Taschenbuch für den Maschinenbau, Springer Verlag, 14th edition (1981 ) p. 339) .
  • the capillary can still be replaced manually from the print head without additional pressing or striking tools and without the risk of damaging the glass capillary.
  • An alternative embodiment provides a clamping means designed with an elastic clamping element such as a spring element, which presses the capillary on the piezoelectric actuator onto a counter surface that determines the capillary alignment, preferably with a guide groove or a stop for the capillary, and fixes it axially in a non-positive and/or frictional manner.
  • an optional tube jacket encasing the capillary and firmly attached e.g. glued on or pressed
  • it is advantageous in the aforementioned configurations, which in its length is further preferably limited to the clamping area of the acting clamping means, which is significantly shorter than the length of the capillary.
  • a non-positive connection between two surfaces is characterized by the fact that the surfaces are pressed against one another with a force, e.g. by clamping means, and static friction is generated solely by the surface pressure, which fixes the two surfaces to one another.
  • An adhesive material transition as occurs in the case of material connections, for example when two surfaces are welded, glued or soldered, does not exist in the case of a non-positive connection.
  • the aforementioned clamping means simplify interchangeability in the print head.
  • a change in the liquid to be printed, but also in the scattering range of the detached drops, which is decisively determined by the design of the nozzle opening can be implemented by exchanging the capillary.
  • a further advantage of such a change of the pressure medium and/or the scattering area is ensured by the fact that the aerosol is only generated when required (aerosol-on-demand) and only when the paste or the liquid leaves the nozzle opening in the antechamber.
  • the in the antechamber via the inlet openings introduced jacket gas not only as an optional component of the forming aerosol, but in particular as a jacket flow around the aerosol, namely in the antechamber as well as in the subsequent outlet opening.
  • a further configuration of the receptacle of the capillary provides for an additional design acting in an axially positive manner with respect to the axis of symmetry to be provided between the capillary of the receptacle and the piezoelectric actuator and/or an elastic element.
  • This includes, for example, steps or webs firmly connected to the capillary or formed onto it, which positively engages in a design of the capillary receptacle or the clamping means provided with this in mating fit as a stop oriented on one side or both sides. It is advisable to provide the aforementioned enveloping pipe jacket with circumferential grooves or collars or to use the end areas of the pipe jacket for a form-fitting axial fixation.
  • the particular advantage of this preferably additional configuration is that, on the one hand, possible slipping processes between the receptacle and the capillary that have a dampening effect on an axial movement are prevented or reduced, and on the other hand, positioning of the capillary in the antechamber when replacing or installing a capillary is simplified due to the form-fitting stop becomes reproducible.
  • the paste or liquid passed through the capillary is the material to be printed. It is present in one phase or, for example as a suspension, in multiple phases. It is within the scope of the invention to also provide multiphase components that react with one another, which are preferably taken from two or more separate reservoirs and brought together between the reservoir and the nozzle opening and are preferably also mixed or suspended there.
  • multi-component epoxy resins are mentioned here, the components of which, like in other multi-component systems, are preferably mixed in the capillary, fed as a mixture through the nozzle opening into the antechamber, from there through the outlet opening onto the surface to be printed and only harden on the surface.
  • a further embodiment of the print head provides means for generating an electrostatic field orthogonal to the axis of symmetry at the outlet opening. This gives the opportunity to further manipulate the aerosol stream after an optional ionization, in particular to deflect it, to focus it or to further atomize it.
  • the means for this purpose preferably comprise electrodes in or around the outlet opening.
  • a further configuration of the print head provides for providing means for generating an electrostatic field parallel or concentric to the axis of symmetry at the outlet opening. While one electrode is arranged orthogonally to the axis of symmetry around the outlet opening, the second electrode is covered by an electrically conductive substrate to be printed as a whole or part of it or, in the case of an electrically non-conductive substrate (e.g. polymer films), by electrically conductive additional elements such as an intermediate plate or layer in or under the substrate educated. Such an electrode arrangement is preferably used for focusing on the substrate.
  • the solution to the stated object also includes a printing method for printing a structure, preferably a raised structure, on a surface when using an aforementioned print head.
  • a liquid or a paste is conducted via the capillary via the nozzle opening into the antechamber, the nozzle opening being moved back and forth via a piezoelectric actuator, the liquid or the paste being continuously separated as fluid droplets and atomized at the nozzle opening.
  • a guide gas is introduced into the antechamber around the capillary via the at least one inlet opening, with the guide gas being composed of a first portion in the antechamber with the fluid droplets to form an aerosol flow and a second portion between the nozzle opening and the outlet opening forming a sheath flow around the aerosol flow .
  • the second proportion preferably predominates over the first proportion, with the first proportion not being present or being almost zero (second proportion over 95%) in a particularly preferred embodiment.
  • the aerosol stream which is surrounded and focused by the sheath stream, is then directed via the exit opening from the antechamber onto a surface of a substrate, where the fluid droplets are applied to the surface.
  • An oscillating system is preferably formed from the oscillating actuator, capillary with the liquid or paste contained therein and the receptacle for the capillary and possibly other oscillating components (e.g. fluid connection), which is more preferably excited in a resonance oscillation.
  • Fig.1a and b schematically represent a print head in two configurations of the print head.
  • the central components of the print head are the print head housing 1 with an outlet opening 2 and the capillary 4 with a nozzle opening 5 , which is suspended concentrically about an axis of symmetry 3 or, in the case of a flat nozzle , a plane of symmetry 6 so that it can move axially Antechamber 8 arranged.
  • the capillary 4 is suspended in the housing via at least one elastic element 7 and guided axially along the axis of symmetry or plane of symmetry.
  • the capillary 4 is fixed in a separate receptacle 9, preferably provided with clamping means.
  • the elastic compliance of the suspension formed in this way The capillary is significantly higher in the axial direction than orthogonally to the aforementioned axis of symmetry or plane of symmetry.
  • At least one of the elastic elements is also equipped with an actuator 10 ( Fig.1a ) connected or forms a constructive unit with it.
  • the elastic element is formed by the actuator ( Fig.1b ).
  • the print head housing 1 has at least one inlet opening 11 for a guide gas and a feed means 12 for the liquid to be printed.
  • the flow paths for the guide gas 13 and for the liquid 14 to be printed are shown in Fig.1a and b indicated.
  • the inlet openings are preferably arranged laterally around the capillary 4 and proximal to the nozzle opening 5 in order to form a sheath flow in the antechamber.
  • the suspension of the capillary in the print head comprising the aforementioned elastic elements and the actuator, must, if they are arranged distally to the inlet openings 11 , allow flow to flow axially around or through them, ie possibly be provided with cutouts through which flow can flow axially.
  • inlet openings 11 shown lead laterally into the print head housing.
  • the connections of the inlet openings are thus arranged laterally, with the result that a larger proximal cover area 15 located above the inlet openings is available for configurations in favor of better interchangeability of the capillary including the feed means 12 .
  • Any dead volumes 16 through which the guide gas does not flow can be minimized in general and in particular in the mentioned cover area by a corresponding design of the print head housing 1 or by components that are not shown (eg a cover closure system).
  • the print head housing 1 is basically a non-illustrated embodiment, for example, for a Replacing the capillary can be dismantled or opened.
  • the cover area 15 can preferably be removed from the rest of the print head housing, while the print head housing is held, for example, via its lateral surfaces.
  • FIG. 12 shows an embodiment in which the inlet openings 11 are arranged in the proximal cover area 15 in the immediate vicinity of the feed means 12.
  • FIG. 12 shows an embodiment in which the intake openings are no longer as in Fig.1a shown arranged on the lateral surface of the print head housing, whereby the lateral surface is advantageously available for handling the print head housing in a printing device, ie it can also be universally clamped and exchanged.
  • this arrangement supports a slimmer design of the print head housing, which, for example, accommodates a closer arrangement of a plurality of print head housings and also storage of the same.
  • the print head housing as such can also be moved and aligned better in a printing device or by means of a manipulator if the connections are bundled, i.e. combined in a connection line, the realization of which is achieved by the aforementioned close arrangement of the inlet openings 11 in the proximal cover area 15 in the immediate vicinity of the feed means is favored.
  • This arrangement is also advantageous if the connections of the inlet openings and the feed means have to be changed together, for example when changing capillaries, for example if the guide gas and the liquid to be printed have to be matched to one another, for example chemically.
  • the connections can be made more compact, so that the print head housing 1 is easier to grasp, which in turn is very beneficial for the integration of the print head as a whole in a manipulator or robot system.
  • Said suspension for the capillary in the print head housing comprises at least one elastic element, at least one actuator, preferably also a separate receptacle for the capillary.
  • the receptacle further preferably comprises clamping means for a non-positive fixation of the capillary.
  • the capillary has at least one three-dimensional surface structure on the outer surface of the jacket, which can be held in a form-fitting manner by the receptacle by means of a negative structure that at least partially corresponds to this surface structure.
  • Fig.2a to e show examples in detail of various configurations of the suspension of the capillary in the print head housing with translation actuators (a) to (c), bending actuators (d) and shear actuators (e), in which the function of the actuator and the elastic element are combined.
  • Fig.2a shows an embodiment with a one-sided translation actuator, for example a piezoelectric actuator of type d31 (transversal actuator) or type d33 (longitudinal actuator, in single-layer or multi-layer construction), which is attached to a projection 17 on the inner wall of the print head housing and acts against a capillary receiving element 18 .
  • the one-sided arrangement of the actuator shown is only suitable for guided actuator movements in the non-resonant frequency range.
  • one embodiment provides for two or more of the aforementioned translation actuators to be arranged on both sides of a capillary or at a regular distance from one another circumferentially around a capillary that is rotationally symmetrical in this case and to be operated synchronously, which creates axial symmetry around the capillary and thus also makes resonance operation possible is.
  • Fig.2b and c show configurations with an annular translation actuator 19 running around the capillary, designed, for example, as a piezoelectric d31 actuator 21 (see FIG Fig.2b ) or d33 actuator 22 (see Fig.2c ), which is well suited for resonant oscillating movements due to its symmetry around the capillary.
  • the basic structure is similar to that in Fig.2a
  • the capillary receiving element has an additional ring-shaped oscillating mass 20 which influences the resonance frequency and is arranged around the capillary.
  • the oscillating mass can be designed in two parts, with the capillary being clamped between the two parts in principle in a non-positive or positive manner.
  • Fig.2d shows a suspension with oscillating bending actuators, preferably multi-layer piezoelectric d31 actuators with opposite polarity or a d31 actuator applied to a bending element, which are preferably clamped to the inner wall of the print head housing and act on the surface of the capillary at the other end.
  • Fig.2d shows an example of an embodiment with two strip-shaped oscillating bending actuators arranged in mirror image on a plane to the capillaries. For a more stable arrangement, which only allows axial movements of the capillary, it is advantageous to provide this arrangement on the capillary a second time in parallel on another.
  • Fig.2e shows an example of an embodiment in which the actuator is configured as a shear-vibration actuator 23, for example a piezoelectric d15 converter. It is fixed (eg glued) to the side of the capillary 4 or, as shown, to the separate receptacle 9 for the capillary 4 . On the other side, it is fixed on a projection 17 on the print head housing side. Shown is an embodiment with a single Scherschwingaktor, with further configurations with two or more such actuators are conceivable more preferably uniformly, ie arranged at a uniform angle to one another around the capillary.
  • the capillary is suspended in the print head housing, for example, with coupling gear arrangements with solid-state or conventional joints in such a way that a translation is primarily generated in the capillary direction and the parasitic translation perpendicular to the capillary direction is suppressed or compensated for as far as possible and the capillary also oscillates moments free as possible .
  • Figure 3a to e disclose exemplary configurations of the suspension of the capillary in the print head housing with separate elastic elements 28 and separate actuators 10.
  • the suspensions are always designed in such a way that the capillaries 4 used in the elastic elements 28 can always be moved axially, i.e. in the direction of the axis of symmetry 3 and the movement can be caused by the actuators 10 .
  • the actuators 10 act—as shown in the illustrated embodiments—preferably directly on the elastic elements 28 , deforming them and thus causing the aforementioned axial displacement of the capillary 4 .
  • the elastic elements preferably extend around the capillary in a rotationally symmetrical manner or in the same way and at equal angular distances from one another.
  • the elastic elements 28 in turn have elastic solid-state joints 29 or elastic bending strips 31 .
  • a refinement group is Figure 3a to c represented. It provides at least two elastic elements 28 of the same design and oriented towards the capillary 4 , which are preferably designed as a truss, the truss elements being connected to one another and preferably pivotable about an axis in relation to one another with joints, preferably the aforementioned elastic solid-state joints 29 .
  • the actuators 10 are preferably piezoelectric ring actuators (eg ring-shaped translation actuator 19) or individual actuators, which are each arranged with the elastic elements around the capillary.
  • Figure 3a 12 shows an embodiment with an actuator which acts axially to the capillary and is arranged on a projection 17 around the capillary, preferably an annular d31 actuator.
  • This preferably acts axially on a first flexure joint of the elastic elements designed as a parallelogram guide with four truss elements each, which are firmly inserted into the print head housing 1 via a truss element with two elastic flexure joints 29 on one side and via another truss element arranged opposite the first with two other elastic solid joints 29 are connected to the axially movable capillary in the print head housing.
  • Fig.3b shows a further embodiment of a suspension of the capillary with elastic elements, each of which comprises a series connection of a parallelogram guide and a further quadrangular truss with four truss elements.
  • Fig.3c shows an embodiment of an elastic element with five elastic flexure joints, with two of these flexure joints being arranged in an axial sequence on the capillary or in a radial sequence on a projection on the inner wall of the print head housing, and the fifth flexure joint in turn being controllable radially to the capillary via the actuator and is movable.
  • the ring-shaped translation actuator 19 is firmly inserted into the print head housing 1 and is oriented radially to the capillary in its stroke alignment.
  • Fig.3b and c thus represent exemplary configurations in which radial adjustment movements are deflected by an actuator into axial capillary movements.
  • Fig.3d represents an exemplary embodiment in which the capillary 4 in the print head housing is inserted and guided in an axially movable manner by two preferably rotationally symmetrical and/or prestressed plate spring elements 30, which form the elastic elements.
  • One of these plate spring elements is preloaded and deflected axially to the capillary by a ring actuator, preferably a ring-shaped d31 actuator, with the arrangement of the ring actuator on a projection 17 around the capillary as in FIG Figure 3a described.
  • Figure 3e shows a further exemplary embodiment in which the capillary 4 in the print head housing is inserted and guided axially by three elastic flexible strips 31 (alternatively flexible sheet metal elements), which form the elastic elements, and are axially movable.
  • two of the bending strips are preferably used only for guiding the capillary in parallel, while at least a third bending strip is preferably designed as an actuator or can be controlled by an actuator to stimulate a capillary movement.
  • At least one of these bending strips is preferably coated with a piezoelectric material and forms a bimorph bending actuator with it, via which the capillary can be moved axially.
  • the receptacles 9 illustrated to e preferably comprise clamping means for the capillary 4, which enable the capillary to be pulled out axially in the proximal direction, ie away from the outlet opening.
  • the clamping means are preferably designed as a slotted tubular element prestressed around the capillary, alternatively by resilient inserts in the tube, two clamping elements for the capillary that act against one another, or by an elastic element with a bore dimensioned as a press fit for the capillary.
  • Fig.4 shows an exemplary arrangement of a capillary 4 in a receptacle 9, the capillary shown having a collar 24 (preferably an elevation on the capillary or a ring fixed on the capillary) as a stop for precise adjustability.
  • a collar 24 preferably an elevation on the capillary or a ring fixed on the capillary
  • This enables the capillary to be inserted into a reproducible position in the receptacle.
  • One embodiment provides for a tube casing that is additionally fixed to the capillary and protects it mechanically, with or without the aforementioned collar, on which the receptacle acts.
  • Fig.5a to d show a basic sectional view of a possible arrangement of a capillary 4 in a receptacle 9 equipped with clamping means
  • Fig.5a and b each show an embodiment with four or three contact lines 25,
  • Fig.5c an embodiment with a contact line 25 and a contact surface 26
  • Figure 5d an embodiment with only one contact surface 26.
  • the prestressing takes place, as shown, via elastic tie rods 27, such as adjustable via elastic expansion screws.
  • elastic tie rods 27 such as adjustable via elastic expansion screws.
  • Further combinations, such as configurations with two opposing contact surfaces or with elastic intermediate elements (eg made of elastomers) are also expressly mentioned. Clamping via contact surfaces is gentler than clamping via contact lines, especially for capillaries made of brittle materials such as glass, but requires a more precise and therefore more complex adjustment of the contact surfaces to avoid stress singularities in the capillary.

Landscapes

  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Coating Apparatus (AREA)

Claims (18)

  1. Tête d'impression comprenant un capillaire (4) adjacent à un élément élastique (7, 28), autour d'un axe de symétrie (3) pour un liquide à imprimer sur un support, avec un orifice de buse (5) débouchant dans une préchambre (8),
    tête d'impression dans laquelle
    a) la préchambre comporte un orifice de sortie (2) aligné sur l'orifice de buse du capillaire dans son alignement axial sur l'axe de symétrie (3), et au moins un orifice d'entrée (11) pour un gaz de guidage (13),
    b) au moins cet élément élastique forme un guide pour le tube capillaire seulement pour son alignement axial, et
    c) des moyens d'alimentation (12) pour le liquide d'impression sont prévus dans le capillaire,
    tête d'impression caractérisée en ce qu'elle comprend :
    d) un système mécanique oscillant comprenant au moins un élément élastique (7, 28) et le capillaire (4) avec le liquide qu'il contient, et
    c) un actionneur piézoélectrique (10, 19) ayant un effet de force électromagnétique alternant par rapport au système oscillant.
  2. Tête d'impression selon la revendication 1,
    caractérisée en ce que
    au moins l'élément élastique (7, 28) est formé par au moins un dispositif de transmission à couplage avec des articulations en corps solide ou des articulations classiques.
  3. Tête d'impression selon la revendication 1 ou 2,
    caractérisée par
    plusieurs éléments élastiques de forme analogue et orientés autour et vers les broches capillaires (4).
  4. Tête d'impression selon l'une des revendications précédentes,
    caractérisée en ce que
    au moins l'élément élastique (7, 28) est un treillis à plusieurs éléments de treillis, les éléments de treillis étant reliés entre eux et de préférence pivotants autour d'un axe avec des articulations, de préférence les articulations de corps solide (29), élastiques citées ci-dessus.
  5. Tête d'impression selon l'une des revendications précédentes,
    caractérisée en ce que
    au moins l'un des éléments élastiques (7, 28) est formé par un élément en forme de coupelle ou de treillis.
  6. Tête d'impression selon l'une des revendications précédentes,
    caractérisée en ce que
    au moins l'un des éléments élastiques (7, 28) est formé par l'actionneur (10, 19).
  7. Tête d'impression selon la revendication 6,
    caractérisée en ce que
    l'actionneur (7, 28) est un actionneur de flexion, en forme de coupelle ou de poutre et un logement pour le capillaire est prévu au milieu dans l'actionneur de flexion.
  8. Tête d'impression selon la revendication 7,
    caractérisée en ce que
    le logement comprend au moins un moyen adhésif pour recevoir le capillaire (4).
  9. Tête d'impression selon la revendication 8,
    caractérisée en ce que
    au moins le moyen adhésif est une masse oscillante sur au moins un élément élastique.
  10. Tête d'impression selon l'une des revendications précédentes,
    caractérisée en ce que
    l'orifice de sortie (2), la préchambre (8) ou au moins l'élément élastique (7) ont une extension symétrique en rotation autour de l'axe de symétrie du capillaire (4).
  11. Tête d'impression selon l'une des revendications précédentes,
    caractérisée en ce que
    l'orifice de sortie (2) comprend des moyens pour générer un champ électrostatique orthogonal à l'axe de symétrie (3).
  12. Tête d'impression selon la revendication 11,
    caractérisée en ce que
    les moyens comprennent des électrodes dans ou autour de l'orifice de sortie (2) et/ou comme zones électro-conductrices dans ou sous le support.
  13. Tête d'impression selon l'une des revendications précédentes,
    caractérisée en ce que
    au moins une électrode annulaire ou au moins une lentille pneumatique est prévue autour de l'orifice de sortie ou l'orifice de sortie est réalisé comme électrode annulaire.
  14. Procédé d'impression pour imprimer une structure sur une surface en utilisant une tête d'impression selon l'une des revendications précédentes,
    selon lequel
    a) on conduit un liquide par le capillaire (4), par l'orifice de buse (5) dans la préchambre (8), l'orifice de buse étant entraînée en va-et-vient par un système mécanique oscillant dans la direction axiale du capillaire, le liquide étant séparé et pulvérisé en continu en gouttelettes de liquide, à l'orifice de buse,
    b) par au moins un orifice d'entrée (11) on fournit un gaz de guidage (13) à la préchambre (8) autour du capillaire, le gaz de guidage se composant d'une première partie dans la préchambre avec les gouttelettes de liquide sous la forme d'un flux d'aérosol et d'une seconde partie entre l'orifice de buse et l'orifice de sortie en un flux enveloppe autour du flux d'aérosol,
    c) le flux d'aérosol entouré du courant enveloppe étant conduit par l'orifice de sortie hors de la préchambre sur la surface d'un support, et
    d) les gouttelettes de liquide sont appliquées sur la surface.
  15. Procédé d'impression selon la revendication 14,
    caractérisé en ce que
    on focalise le flux d'aérosol dans la préchambre (8) ou sortant de la préchambre.
  16. Procédé d'impression selon la revendication 14 ou 15,
    caractérisé en ce que
    on excite le système oscillant à la fréquence de résonance par un actionneur (10, 19).
  17. Procédé d'impression selon l'une des revendications 14 à 16,
    caractérisé en ce que
    au passage de l'orifice de sortie le flux d'aérosol est dévié, focalisé ou pulvérisé encore plus de manière électrostatique.
  18. Procédé d'impression selon l'une des revendications 14 à 17,
    caractérisé en ce que
    la vitesse de la séparation en continu et de la pulvérisation du liquide à l'orifice de la buse est réglée par l'amplitude, la fréquence ou la forme du signal d'oscillation.
EP19706369.6A 2018-02-12 2019-02-08 Tête d'impression et procédé d'impression Active EP3752365B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018103049.5A DE102018103049A1 (de) 2018-02-12 2018-02-12 Druckkopf und Druckverfahren
PCT/EP2019/000036 WO2019154558A1 (fr) 2018-02-12 2019-02-08 Tête d'impression et procédé d'impression

Publications (2)

Publication Number Publication Date
EP3752365A1 EP3752365A1 (fr) 2020-12-23
EP3752365B1 true EP3752365B1 (fr) 2023-08-09

Family

ID=65516449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19706369.6A Active EP3752365B1 (fr) 2018-02-12 2019-02-08 Tête d'impression et procédé d'impression

Country Status (5)

Country Link
US (1) US11198292B2 (fr)
EP (1) EP3752365B1 (fr)
DE (1) DE102018103049A1 (fr)
FI (1) FI3752365T3 (fr)
WO (1) WO2019154558A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018235383A1 (fr) * 2017-06-21 2018-12-27 ソニー株式会社 Dispositif d'alimentation en liquide d'échantillon, cytomètre de flux et procédé d'alimentation en liquide d'échantillon
WO2019209374A1 (fr) 2018-04-24 2019-10-31 Hewlett-Packard Development Company, L.P. Éjection de gouttelettes séquencées pour distribuer des fluides
US11925932B2 (en) 2018-04-24 2024-03-12 Hewlett-Packard Development Company, L.P. Microfluidic devices
CN108330061B (zh) * 2018-05-14 2024-02-09 苏州大学张家港工业技术研究院 基于柔性铰链机构的压电超声显微注射装置
US11547993B2 (en) 2018-07-17 2023-01-10 Hewlett-Packard Development Company, L.P. Droplet ejectors with target media
EP4091717A1 (fr) * 2021-05-18 2022-11-23 Scienion GmbH Procédé et dispositif de distribution de gouttelettes pour distribuer au moins une gouttelette
CN113978132B (zh) * 2021-09-17 2022-08-23 集美大学 一种声泳复合流动聚焦微纳喷印方法及装置
CN114985775B (zh) * 2022-06-02 2024-07-16 临沂大学 一种基于气溶胶三维打印的喷头装置

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3596275A (en) 1964-03-25 1971-07-27 Richard G Sweet Fluid droplet recorder
US3878519A (en) * 1974-01-31 1975-04-15 Ibm Method and apparatus for synchronizing droplet formation in a liquid stream
US4240081A (en) 1978-10-13 1980-12-16 Dennison Manufacturing Company Ink jet printing
JPS5625465A (en) 1979-08-09 1981-03-11 Ricoh Co Ltd Air stream paralleling device structured unitedly with charging electrode
FR2463920A1 (fr) * 1979-08-17 1981-02-27 Commissariat Energie Atomique Dispositif microdoseur de liquides
JPS56133173A (en) 1980-03-21 1981-10-19 Mitsubishi Electric Corp Ink-jet recorder
JPS5734971A (en) 1980-08-11 1982-02-25 Matsushita Electric Ind Co Ltd Ink jet recorder
IT1156090B (it) 1982-10-26 1987-01-28 Olivetti & Co Spa Metodo e dispositivo di stampa a getto d inchiostro
JPH01108053A (ja) 1987-10-20 1989-04-25 L Ee C:Kk インク用スプレーガン装置
EP0417285A4 (en) 1989-03-07 1991-08-28 Leningradsky Institut Tochnoi Mekhaniki I Optiki Electric drop-jet generator
DE4128590A1 (de) 1991-08-28 1993-03-04 Kumag Ag Verfahren zum auftragen von druckfarbe und dafuer geeigneter druckkopf
US5687905A (en) * 1995-09-05 1997-11-18 Tsai; Shirley Cheng Ultrasound-modulated two-fluid atomization
HUP9800508A1 (hu) * 1998-03-09 2000-02-28 György Hegedűs Szerkezet vibrációs folyadékadagoláshoz
US7108894B2 (en) 1998-09-30 2006-09-19 Optomec Design Company Direct Write™ System
US6874699B2 (en) 2002-10-15 2005-04-05 Wisconsin Alumni Research Foundation Methods and apparata for precisely dispensing microvolumes of fluids
US7938341B2 (en) 2004-12-13 2011-05-10 Optomec Design Company Miniature aerosol jet and aerosol jet array
US7095018B2 (en) 2004-12-29 2006-08-22 Wisconsin Alumni Research Foundation Deposition of samples and sample matrix for enhancing the sensitivity of matrix assisted laser desorption/ionization mass spectrometry
TWI482662B (zh) 2007-08-30 2015-05-01 Optomec Inc 機械上一體式及緊密式耦合之列印頭以及噴霧源
EP2613889B1 (fr) * 2010-09-07 2017-09-20 University of Limerick Distributeur de gouttelettes de liquide
FR2968596B1 (fr) 2010-12-13 2013-01-04 Centre Nat Rech Scient Dispositif a jet d'encre comportant des moyens d'injection d'un gaz avec l'encre et procede de jet d'encre associe
US8696094B2 (en) * 2012-07-09 2014-04-15 Eastman Kodak Company Printing with merged drops using electrostatic deflection
US9895707B2 (en) * 2014-05-05 2018-02-20 Msp Corporation Method and apparatus for generating monodisperse aerosols
JP2015214036A (ja) 2014-05-08 2015-12-03 株式会社日立産機システム インクジェット記録装置

Also Published As

Publication number Publication date
DE102018103049A1 (de) 2019-08-14
EP3752365A1 (fr) 2020-12-23
FI3752365T3 (fi) 2023-11-03
US20210046754A1 (en) 2021-02-18
US11198292B2 (en) 2021-12-14
WO2019154558A1 (fr) 2019-08-15

Similar Documents

Publication Publication Date Title
EP3752365B1 (fr) Tête d'impression et procédé d'impression
EP3171985B1 (fr) Distributeur piézoélectrique à transducteur longitudinal et tube capillaire remplaçable
DE69931787T2 (de) Vorrichtung und Verfahren zur Verabreichung von Tropfen
DE69018981T2 (de) Synchronierte erregung für kontinuierlich arbeitenden tintenstrahldrucker mit einer langen reihe von düsen.
DE60317305T2 (de) Kontaktloses verfahren zur verteilung geringer flüssigkeitsmengen
EP1654068B1 (fr) Dispositif de microdosage et procede de delivrance dosee de liquides
DE69532416T2 (de) Methode und vorrichtung zur tröpfchenerzeugung mit hoher rate bei der durchfluss-cytometrie
US7470547B2 (en) Methods and systems for dispensing sub-microfluidic drops
DE102016014922A1 (de) System und Verfahren zum Flüssigprobenaufgabe für Analyseplasmaspektrometer
DE60126227T2 (de) Vielfach-Tropfenabgabesystem für Biofluide
EP1171233B1 (fr) Dispositif et procede pour l'application de micro-gouttelettes sur un substrat
DE69907883T2 (de) Vorrichtung zur abgabe von flüssigkeiten
WO2002040162A1 (fr) Dispositif d'absorption et de distribution d'echantillons de liquide
WO2006076957A1 (fr) Pointe de pipette, systeme de pipette, dispositif d'actionnement de pipette et procede de pipettage dans la plage du nanolitre
EP3256839A1 (fr) Dispositif et procédé de distribution de particules orientées en utilisant un champ acoustique dans des gouttes en vol libre
EP1173279B1 (fr) Procede et dispositif permettant de deposer de petits volumes de liquide
RU2044657C1 (ru) Струйная красящая насадка для печатающего устройства
EP0714766B1 (fr) Procédé pour fabriquer des matrices d'impression par stencil
DE60307095T2 (de) Vorrichtung zur aktiv gesteuerten und lokalisierten ablagerung mindestens einer biologischen lösung
DE4140533A1 (de) Verfahren und vorrichtung zum mikrodosieren von schmierstoff
DE102008042071A1 (de) Mikrodosierpumpe
DE10135963A1 (de) Vorrichtung zum Pipettieren einer Flüssigkeit
EP0598926A1 (fr) Procédé et appareil pour la fabrication de plaques d'impression flexographiques
EP1200198B1 (fr) Element d'actionneur destine a un microdiffuseur et son procede de realisation
DE4314343C2 (de) Vorrichtung zur Dosierung von Flüssigkeiten

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200709

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230112

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAL Information related to payment of fee for publishing/printing deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR3

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

INTC Intention to grant announced (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230413

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502019008861

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231211

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231109

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231209

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240220

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20240219

Year of fee payment: 6

Ref country code: DE

Payment date: 20240216

Year of fee payment: 6

Ref country code: CH

Payment date: 20240301

Year of fee payment: 6

Ref country code: GB

Payment date: 20240222

Year of fee payment: 6

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502019008861

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20240221

Year of fee payment: 6

Ref country code: FR

Payment date: 20240222

Year of fee payment: 6

Ref country code: BE

Payment date: 20240219

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20240513