EP3705296B1 - Flüssigkeitsausstosskopf und flüssigkeitsausstossvorrichtung - Google Patents

Flüssigkeitsausstosskopf und flüssigkeitsausstossvorrichtung Download PDF

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Publication number
EP3705296B1
EP3705296B1 EP19218847.2A EP19218847A EP3705296B1 EP 3705296 B1 EP3705296 B1 EP 3705296B1 EP 19218847 A EP19218847 A EP 19218847A EP 3705296 B1 EP3705296 B1 EP 3705296B1
Authority
EP
European Patent Office
Prior art keywords
opening
flow path
liquid chamber
individual flow
common liquid
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
EP19218847.2A
Other languages
English (en)
French (fr)
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EP3705296A1 (de
Inventor
Kazuaki Uchida
Yuma Fukuzawa
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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
Priority claimed from JP2018239219A external-priority patent/JP7183770B2/ja
Priority claimed from JP2019056087A external-priority patent/JP7287042B2/ja
Priority claimed from JP2019140488A external-priority patent/JP7318398B2/ja
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of EP3705296A1 publication Critical patent/EP3705296A1/de
Application granted granted Critical
Publication of EP3705296B1 publication Critical patent/EP3705296B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
    • 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
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/18—Ink recirculation systems
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
    • B41J2002/14241—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm having a cover around the piezoelectric thin film element
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14362—Assembling elements of heads
    • 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
    • B41J2202/11—Embodiments of or processes related to ink-jet heads characterised by specific geometrical characteristics
    • 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
    • B41J2202/12—Embodiments of or processes related to ink-jet heads with ink circulating through the whole print head

Definitions

  • the present disclosure relates to a liquid ejecting head and a liquid ejecting apparatus.
  • JP-A-2013-184372 discloses a configuration in which a liquid is ejected from nozzles by changing pressures inside pressure chambers that are in communication with the nozzles.
  • crosstalk a phenomenon in which a pressure change in one of the pressure chambers affects a pressure change in an adjacent pressure chamber occurs, which becomes a problem.
  • crosstalk occurs, errors occur in ink ejection characteristics of each nozzle.
  • Document 2008/239007 A1 discloses a print head that allows the characteristics of ejected ink to be adjusted for each ejection port in spite of a variation in the distance from an ink supply port to the heating element.
  • the area of the heating element decreases with increasing distance from the ink supply port and increases with decreasing distance from the ink supply port.
  • the heating element is shaped like a rectangle that is longer in a direction orthogonal to a direction in which the plurality of ejection ports are arranged than in the direction in which the plurality of ejection ports are arranged.
  • the aspect ratio of the heating element depends on the length of an ink channel through which ink is introduced into the bubbling chamber.
  • a liquid ejecting head includes a plurality of nozzles that eject a liquid along a first axis, a row of individual flow paths that includes a plurality of individual flow paths arranged in parallel along a second axis orthogonal to the first axis when viewed in a direction of the first axis, and a common liquid chamber that is commonly in communication with the plurality of individual flow paths.
  • the plurality of individual flow paths include a first individual flow path and a second individual flow path that are adjacent to each other in the row of individual flow paths, and a position of a first opening that is a connection port between the common liquid chamber and the first individual flow path and a position of a second opening that is a connection port between the common liquid chamber and the second individual flow path are different in the direction of the first axis.
  • a liquid ejecting head includes a plurality of nozzles that eject a liquid along a first axis, a row of individual flow paths that includes a plurality of individual flow paths arranged in parallel along a second axis orthogonal to the first axis when viewed in a direction of the first axis, a first common liquid chamber that is commonly in communication with the plurality of individual flow paths, and a second common liquid chamber that is commonly in communication with the plurality of individual flow paths.
  • the plurality of individual flow paths include a first individual flow path and a second individual flow path that are adjacent to each other in the row of individual flow paths, a position of a first opening that is a connection port between the first common liquid chamber and the first individual flow path and a position of a second opening that is a connection port between the first common liquid chamber and the second individual flow path are different in the direction of the first axis, and a position of a third opening that is a connection port between the second common liquid chamber and the first individual flow path and a position of a fourth opening that is a connection port between the second common liquid chamber and the second individual flow path are different in the direction of the first axis.
  • a liquid ejecting head includes a plurality of nozzles that eject a liquid along a first axis, a row of individual flow paths that includes a plurality of individual flow paths arranged in parallel along a second axis orthogonal to the first axis when viewed in a direction of the first axis, and a common liquid chamber that is commonly in communication with the plurality of individual flow paths.
  • the plurality of individual flow paths include a first individual flow path and a second individual flow path that are adjacent to each other in the row of individual flow paths, and a direction of a first opening that is a connection port between the common liquid chamber and the first individual flow path and a direction of a second opening that is a connection port between the common liquid chamber and the second individual flow path are different.
  • a liquid ejecting head includes a plurality of nozzles that eject a liquid along a first axis, a row of individual flow paths that includes a plurality of individual flow paths arranged in parallel along a second axis orthogonal to the first axis when viewed in a direction of the first axis, a first common liquid chamber that is commonly in communication with the plurality of individual flow paths, and a second common liquid chamber that is commonly in communication with the plurality of individual flow paths.
  • the plurality of individual flow paths include a first individual flow path and a second individual flow path that are adjacent to each other in the row of individual flow paths, a direction of a first opening that is a connection port between the first common liquid chamber and the first individual flow path and a direction of a second opening that is a connection port between the first common liquid chamber and the second individual flow path are different, and a direction of a third opening that is a connection port between the second common liquid chamber and the first individual flow path and a direction of a fourth opening that is a connection port between the second common liquid chamber and the second individual flow path are different.
  • the present disclosure is specified as a liquid ejecting apparatus that includes the liquid ejecting head according to each of the aspects described above.
  • FIG. 1 is a block diagram illustrating an example of a liquid ejecting apparatus 100 according to an embodiment of the present disclosure.
  • the liquid ejecting apparatus 100 of the present exemplary embodiment is an ink jet printing apparatus that ejects ink, which is an example of a liquid, on a medium 12. While the medium 12 is typically printing paper, an object to be printed formed of any material, such as a resin film or fabric, is used as the medium 12. As illustrated as an example in FIG. 1 , a liquid container 14 that stores ink is installed in the liquid ejecting apparatus 100.
  • a cartridge configured to detach from the liquid ejecting apparatus 100, a bag-shaped ink pack formed of flexible film, or an ink tank into which ink can be refilled is used as the liquid container 14.
  • a plurality of types of inks of different colors are stored in the liquid container 14.
  • the liquid ejecting apparatus 100 includes a control unit 20, a transport mechanism 22, a moving mechanism 24, and a liquid ejecting head 26.
  • the control unit 20 includes a processing circuit such as a central processing unit (CPU) or a field programmable gate array (FPGA) and a memory circuit such as a semiconductor memory, and controls each element of the liquid ejecting apparatus 100 in an integrated manner.
  • the transport mechanism 22 transports the medium 12 in a Y-axis direction under the control of the control unit 20.
  • the moving mechanism 24 transports the liquid ejecting head 26 in an X-axis direction under the control of the control unit 20.
  • the X-axis intersects the Y-axis along which the medium 12 is transported.
  • the X-axis and the Y-axis are orthogonal to each other.
  • the moving mechanism 24 of the present exemplary embodiment includes a substantially box-shaped transport body 82 that houses the liquid ejecting head 26, and a transport belt 84 to which the transport body 82 is fixed. Note that a configuration in which a plurality of liquid ejecting heads 26 are mounted in the transport body 82 or a configuration in which the liquid container 14 is mounted in the transport body 82 together with the liquid ejecting head 26 can be adopted.
  • the liquid ejecting head 26 ejects ink, which is supplied from the liquid container 14, onto the medium 12 through a plurality of nozzles.
  • the control unit 20 generates various signals and voltages for ejecting ink from the nozzles and supplies the signals and voltages to the liquid ejecting head 26.
  • the ink is ejected along a Z-axis.
  • the Z-axis is an axis that is perpendicular to an XY plane. In other words, the X-axis and the Y-axis are orthogonal to the Z-axis.
  • the Z-axis is an example of a "first axis”
  • the Y-axis is an example of a “second axis”
  • the X-axis is an example of a "third axis”.
  • FIG. 2 is an exploded perspective view of the liquid ejecting head 26.
  • the liquid ejecting head 26 includes a plurality of nozzles N arranged in the Y-axis direction.
  • the plurality of nozzles N of the present exemplary embodiment are divided into a first line L1 and a second line L2 that are parallelly arranged with a space in between in the X-axis direction.
  • the first line L1 and the second line L2 are each a set of a plurality of nozzles N linearly arranged in the Y-axis direction.
  • FIG. 1 is a set of a plurality of nozzles N linearly arranged in the Y-axis direction.
  • positions of the nozzles N of the first line L1 and positions of the nozzles N of the second line L2 are different in the Y-axis. Specifically, when viewed in the X-axis direction, a single nozzle N of the second line L2 is positioned between two adjacent nozzles N of the first line L1.
  • FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2
  • FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2
  • FIG. 3 is a cross-sectional view of elements related to a single nozzle N in the first line L1
  • FIG. 4 is a cross-sectional view of elements related to a single nozzle N in the second line L2.
  • the elements related to each nozzle N of the first line L1 and the elements related to each nozzle N of the second line L2 are in an inverted relationship with respect to a YZ plane.
  • the liquid ejecting head 26 includes a flow path structure 30.
  • the flow path structure 30 forms flow paths that supply ink to the nozzles N.
  • a diaphragm 42, a protective substrate 46, and a housing portion 48 are provided on the negative side in the Z-axis direction with respect to the flow path structure 30.
  • a nozzle plate 62, a first vibration absorber 64, and a second vibration absorber 65 are provided on the positive side in the Z-axis direction with respect to a flow path substrate 32.
  • each element of the liquid ejecting head 26 is a plate-shaped member elongated along the Y-axis and is connected to each other using an adhesive agent, for example.
  • the nozzle plate 62 is a plate-shaped member in which a plurality of nozzles N are formed and is provided on a surface of the flow path structure 30 on the positive side in the Z-axis direction. Each of the plurality of nozzles N is a circular through hole through which ink passes.
  • the plurality of nozzles N constituting the first line L1 and the plurality of nozzles N constituting the second line L2 are formed.
  • the nozzle plate 62 is manufactured by processing a single crystal substrate formed of silicon using a semiconductor manufacturing technique such as, for example, dry etching or wet etching. However, any known materials and any known manufacturing methods can be adopted to manufacture the nozzle plate 62.
  • the flow path structure 30 includes the flow path substrate 32 and a pressure chamber substrate 34.
  • the flow path substrate 32 is positioned on the positive side in the Z-axis direction in the flow path structure 30, and the pressure chamber substrate 34 is positioned on the negative side in the Z-axis direction in the flow path structure 30.
  • a space Ka1 and a space Ka2 are formed in the flow path substrate 32.
  • the space Ka1 and the space Ka2 are each an opening elongated along the Y-axis.
  • the space Ka1 is formed, in the flow path substrate 32, on the positive side in the X-axis direction
  • the space Ka2 is formed, in the flow path substrate 32, on the negative side in the X-axis direction.
  • the flow path substrate 32 of the present exemplary embodiment is formed of layers including a first substrate 321 and a second substrate 322.
  • the first substrate 321 is positioned between the second substrate 322 and the pressure chamber substrate 34.
  • the space Ka1 is formed across the first substrate 321 and the second substrate 322.
  • the space Ka2 is formed across the first substrate 321 and the second substrate 322.
  • the housing portion 48 is a case for storing the ink.
  • a space Kb1 corresponding to the space Ka1 and a space Kb2 corresponding to the space Ka2 are formed in the housing portion 48.
  • the space Ka1 of the flow path structure 30 and the space Kb1 of the housing portion 48 are in communication with each other and the space Ka2 of the flow path structure 30 and space Kb2 of the housing portion 48 are in communication with each other.
  • the space formed by the space Ka1 and the space Kb1 functions as a first common liquid chamber K1
  • the space formed by space Ka2 and the space Kb2 functions as a second common liquid chamber K2.
  • the first common liquid chamber K1 and the second common liquid chamber K2 are each a space commonly formed across a plurality of nozzles N and each store ink suppled to the plurality of nozzles N.
  • the first vibration absorber 64 is a flexible film constituting a portion of the wall surface of the first common liquid chamber K1.
  • the portion (hereinafter, referred to as a "first deforming portion 641") in the first vibration absorber 64 that becomes deformed in response to a pressure change of the ink inside the first common liquid chamber K1 is where the first vibration absorber 64 constitute the portion of the wall surface of the first common liquid chamber K1.
  • the first deforming portion 641 absorbs the pressure change of the ink inside the first common liquid chamber K1 by becoming deformed according to the pressure change inside the first common liquid chamber K1.
  • the first common liquid chamber K1 includes the first deforming portion 641.
  • the second vibration absorber 65 is a flexible film constituting a portion of the wall surface of the second common liquid chamber K2.
  • the portion (hereinafter, referred to as a "second deforming portion 651") in the second vibration absorber 65 that becomes deformed in response to a pressure change of the ink inside the second common liquid chamber K2 is where the second vibration absorber 65 constitute the portion of the wall surface of the second common liquid chamber K2.
  • a portion of the second vibration absorber 65 that is not fixed to a surface of the flow path substrate 32 is the second deforming portion 651.
  • the second deforming portion 651 absorbs the pressure change of the ink inside the second common liquid chamber K2 by becoming deformed according to the pressure change inside the second common liquid chamber K2.
  • the second common liquid chamber K2 includes the second deforming portion 651.
  • FIG. 5 is a schematic diagram of the flow paths formed in the liquid ejecting head 26.
  • an individual flow path Q is formed for each nozzle N in the flow path structure 30.
  • a plurality of individual flow paths Q are each formed for a corresponding one of a plurality of nozzles N.
  • the nozzles N are formed in the nozzle plate 62 in portions where the wall surfaces of the individual flow paths Q are formed.
  • each nozzle N is formed so as to branch out from the corresponding individual flow path Q.
  • the first common liquid chamber K1 and the second common liquid chamber K2 are in communication with each other through the individual flow paths Q.
  • the individual flow paths Q are formed so that the space Ka1 of the first common liquid chamber K1 and the space Ka2 of the second common liquid chamber K2 communicate with each other.
  • the individual flow paths Q are flow paths formed from an inner wall surface of the first common liquid chamber K1 to an inner wall surface of the second common liquid chamber K2.
  • the individual flow paths Q corresponding to the nozzles N of the first line L1 and the individual flow paths Q corresponding to the nozzles N of the second line L2 are in an inverted relationship with respect to the YZ plane.
  • the plurality of individual flow paths Q are arranged in parallel to each other and along the Y-axis. In other words, a row of individual flow paths that includes the plurality of individual flow paths Q are formed. Specifically, the individual flow paths Q corresponding to the nozzles N of the first line L1 and the individual flow paths Q corresponding to the nozzles N of the second line L2 are arranged alternately in the Y-axis direction. As understood from the description above, the plurality of individual flow paths Q are in communication with both the first common liquid chamber K1 and the second common liquid chamber K2. In the ink that is supplied to the individual flow paths Q from the first common liquid chamber K1, the ink that is not ejected through the nozzles N is stored in the second common liquid chamber K2.
  • the liquid ejecting apparatus 100 includes a circulation mechanism 90.
  • the circulation mechanism 90 is a mechanism that recirculates the ink, which is to be discharged from the liquid ejecting head 26, to the liquid ejecting head 26.
  • the circulation mechanism 90 is a mechanism that circulates the ink that is supplied to the liquid ejecting head 26 and includes, for example, a supply flow path 91, a discharge flow path 92, and a circulation pump 93.
  • the supply flow path 91 is a flow path that supplies the ink to the first common liquid chamber K1 and is coupled to the introduction port 481 of the first common liquid chamber K1.
  • the discharge flow path 92 is a flow path that discharges the ink from the second common liquid chamber K2 and is coupled to the discharge port 482 of the second common liquid chamber K2.
  • the circulation pump 93 is a pumping mechanism that sends the ink supplied through the discharge flow path 92 to the supply flow path 91. In other words, the ink discharged from the second common liquid chamber K2 is recirculated to the first common liquid chamber K1 through the discharge flow path 92, the circulation pump 93, and the supply flow path 91.
  • the circulation mechanism 90 functions as an element that collects the ink from the second common liquid chamber K2 and that recirculates the collected ink to the first common liquid chamber K1. Note that a configuration in which the circulation mechanism 90 collects the ink from the first common liquid chamber K1 and that recirculates the ink to the second common liquid chamber K2 may be adopted as well.
  • each individual flow path Q includes a pressure chamber C.
  • the pressure chambers C are formed in the pressure chamber substrate 34.
  • the pressure chamber substrate 34 is a plate-shaped member in which the plurality of pressure chambers C are each formed for a corresponding one of the plurality of nozzles N.
  • Each pressure chamber C is a space elongated along the X-axis in plan view.
  • the plurality of pressure chambers C corresponding to the nozzles N of the first line L1 are arranged in the Y-axis direction and in a portion in the pressure chamber substrate 34 on the positive side in the X-axis direction.
  • the plurality of pressure chambers C corresponding to the nozzles N of the second line L2 are arranged in the Y-axis direction and in a portion in the pressure chamber substrate 34 on the negative side in the X-axis direction.
  • Each pressure chamber C overlaps the corresponding nozzle N in plan view.
  • the flow path substrate 32 and the pressure chamber substrate 34 are manufactured by processing a single crystal substrate formed of silicon using a semiconductor manufacturing technique, for example.
  • a semiconductor manufacturing technique for example.
  • any known materials and any known manufacturing methods can be adopted to manufacture the flow path substrate 32 and the pressure chamber substrate 34.
  • the diaphragm 42 is formed on a surface of the pressure chamber substrate 34 on a side opposite the flow path substrate 32.
  • the diaphragm 42 of the present exemplary embodiment is a plate-shaped member configured to vibrate elastically. Note that portions or the entire diaphragm 42 can be formed so as to be integrated with the pressure chamber substrate 34 by selectively removing portions of a plate-shaped member, having a predetermined plate thickness, corresponding to the pressure chambers C in the plate thickness direction.
  • the pressure chambers C are spaces located between the flow path substrate 32 and the diaphragm 42.
  • energy generating portions 44 are formed on a surface of the diaphragm 42 on a side opposite the pressure chambers C.
  • the energy generating portions 44 are each formed for a corresponding nozzle N.
  • the plurality of energy generating portions 44 are each formed for a corresponding one of the plurality of nozzles N.
  • Each energy generating portion 44 generates energy for ejecting ink.
  • the energy generating portions 44 are each a drive element that ejects ink through the corresponding nozzle N by changing the pressure inside the corresponding pressure chamber C.
  • piezoelectric elements are used as the energy generating portions 44.
  • each energy generating portion 44 generates a pressure for ejecting ink.
  • each energy generating portion 44 is an actuator that becomes deformed by having a drive signal supplied thereto and is formed so as to be elongated along the X-axis in plan view.
  • the plurality of energy generating portions 44 are arranged in the Y-axis direction so as to correspond to the plurality of pressure chambers C.
  • the protective substrate 46 in FIG. 2 is a plate-shaped member that, while protecting the plurality of energy generating portions 44, reinforces the mechanical strength of the diaphragm 42.
  • the protective substrate 46 is mounted on a side opposite the pressure chamber substrate 34 so that the protective substrate 46 and the pressure chamber substrate 34 interpose the diaphragm 42 in between.
  • the plurality of energy generating portions 44 are mounted between the protective substrate 46 and the diaphragm 42.
  • the protective substrate 46 is formed of silicon (Si), for example.
  • a wiring substrate 50 for example, is joined to a surface of the diaphragm 42.
  • the wiring substrate 50 is a mounted component in which a plurality of wires that electrically couple the control unit 20 or a power supply circuit and the liquid ejecting head 26 to each other are formed.
  • the flexible wiring substrate 50 such as, for example, a flexible printed circuit (FPC) or a flexible flat cable (FFC) is desirably used.
  • a drive circuit 52 mounted on the wiring substrate 50 supplies a drive signal to each energy generating portion 44.
  • FIG. 6 is a cross-sectional view of the first individual flow path Q1 and FIG. 7 is a cross-sectional view of the second individual flow path Q2.
  • FIG. 6 is an enlarged view of the individual flow path Q illustrated as an example in FIG. 3 and
  • FIG. 7 is an enlarged view of the individual flow path Q illustrated as an example in FIG. 4 .
  • the first individual flow path Q1 is an individual flow path Q corresponding to any single nozzle N (hereinafter, referred to as a "first nozzle N1”) in the first line L1
  • the second individual flow path Q2 is an individual flow path Q corresponding to any single nozzle N (hereinafter, referred to as a "second nozzle N2") in the second line L2.
  • the first nozzle N1 and the second nozzle N2 are, among the plurality of nozzles N formed in the nozzle plate 62, two nozzles N adjacent to each other when viewed in the X-axis direction.
  • the pressure chamber C corresponding to the first individual flow path Q1 is denoted as a "first pressure chamber C1”
  • the pressure chamber C corresponding to the second individual flow path Q2 is denoted as a "second pressure chamber C2”.
  • the first individual flow path Q1 and the second individual flow path Q2 are in an inverted relationship with respect to an XZ plane. Note that a flow path resistance R of the first individual flow path Q1 and a flow path resistance R of the second individual flow path Q2 are substantially the same.
  • a first opening O1 that is a connection port between the first individual flow path Q1 and the first common liquid chamber K1 is formed in a wall surface of the first common liquid chamber K1. It can also be said that an interface between the first common liquid chamber K1 and the first individual flow path Q1 is the first opening 01.
  • a third opening O3 that is a connection port between the second common liquid chamber K2 and the first individual flow path Q1 is formed in a wall surface of the second common liquid chamber K2. It can also be said that an interface between the second common liquid chamber K2 and the first individual flow path Q1 is the third opening O3.
  • a flow path from the first opening O1 to the third opening O3 is the first individual flow path Q1.
  • a second opening O2 that is a connection port between the second individual flow path Q2 and the first common liquid chamber K1 is formed in a wall surface of the first common liquid chamber K1. It can also be said that an interface between the first common liquid chamber K1 and the second individual flow path Q2 is the second opening O2.
  • a fourth opening O4 that is a connection port between the second common liquid chamber K2 and the second individual flow path Q2 is formed in a wall surface of the second common liquid chamber K2. It can also be said that an interface between the second common liquid chamber K2 and the second individual flow path Q2 is the fourth opening O4.
  • a flow path from the second opening O2 to the fourth opening O4 is the second individual flow path Q2.
  • the first individual flow path Q1 includes a first communication flow path Q11 and a second communication flow path Q12.
  • the first communication flow path Q11 allows the first common liquid chamber K1 and the first nozzle N1 to communicate with each other.
  • the first communication flow path Q11 is a flow path from the first opening O1 formed in the wall surface of the space Ka1 to an opening of the first nozzle N1 on the negative side in the Z-axis direction.
  • the first communication flow path Q11 of the present exemplary embodiment includes a first flow path 111, the first pressure chamber C1, and a second flow path 112.
  • the first flow path 111 allows the space Ka1 and the first pressure chamber C1 to communicate with each other.
  • the first flow path 111 is a through hole formed in the first substrate 321 and along the Z-axis.
  • the first pressure chamber C1 allows the first flow path 111 and the second flow path 112 to communicate with each other.
  • the first pressure chamber C1 is a space that is elongated along the X-axis and that is formed in the pressure chamber substrate 34.
  • the energy generating portion 44 corresponding to the first nozzle N1 is mounted on a surface of the diaphragm 42 on a side opposite the first pressure chamber C1. It can also be said that the energy generating portion 44 corresponding to the first nozzle N1 is provided midway of the first individual flow path Q1.
  • the energy generating portion 44 corresponding to the first nozzle N1 is an example of a "first energy generating portion”.
  • the second flow path 112 allows the first pressure chamber C1 and the first nozzle N1 to communicate with each other.
  • the second flow path 112 is a through hole formed along the Z-axis and across the first substrate 321 and the second substrate 322.
  • the first pressure chamber C1 is in communication with the first common liquid chamber K1 through the first flow path 111 and is in communication with the first nozzle N1 through the second flow path 112. Accordingly, the ink filled in the first pressure chamber C1 from the first common liquid chamber K1 through the first flow path 111 passes through the second flow path 112 and is ejected through the first nozzle N1 with the deformation of the energy generating portion 44 corresponding to the first pressure chamber C1.
  • the second communication flow path Q12 allows the second common liquid chamber K2 and the first nozzle N1 to communicate with each other.
  • the second communication flow path Q12 is a flow path from a plane that includes a central axis of the first nozzle N1 and that is parallel to the YZ plane to the third opening O3 formed in a lateral surface of the space Ka2.
  • the second communication flow path Q12 of the present exemplary embodiment includes a third flow path 121, a fourth flow path 122, and a fifth flow path 123.
  • the third flow path 121 allows the first nozzle N1 and the fourth flow path 122 to communicate with each other.
  • the third flow path 121 is formed along the X-axis and in a surface of the second substrate 322 on the positive side in the Z-axis direction.
  • the fourth flow path 122 allows the third flow path 121 and the fifth flow path 123 to communicate with each other.
  • the fourth flow path 122 is a through hole formed in the second substrate 322 and along the Z-axis.
  • the fifth flow path 123 allows the fourth flow path 122 and the second common liquid chamber K2 to communicate with each other.
  • the fifth flow path 123 is formed along the X-axis and in a surface of the second substrate 322 on the negative side in the Z-axis direction.
  • the second individual flow path Q2 includes a third communication flow path Q23 and a fourth communication flow path Q24.
  • the third communication flow path Q23 corresponds to the first communication flow path Q11
  • the fourth communication flow path Q24 corresponds to the second communication flow path Q12.
  • the first communication flow path Q11 and the fourth communication flow path Q24 are provided alternately along the Y-axis and on the positive side in the X-axis direction.
  • the second communication flow path Q12 and the third communication flow path Q23 are provided alternately along the Y-axis and on the negative side in the X-axis direction.
  • the fourth communication flow path Q24 allows the first common liquid chamber K1 and the second nozzle N2 to communicate with each other.
  • the fourth communication flow path Q24 is a flow path from the second opening O2 formed in a lateral surface of the space Ka1 to a plane that includes a central axis of the second nozzle N2 and that is parallel to the YZ plane.
  • the fourth communication flow path Q24 of the present exemplary embodiment includes a sixth flow path 241, a seventh flow path 242, and an eighth flow path 243.
  • the sixth flow path 241 couples the first common liquid chamber K1 and the seventh flow path 242 to each other.
  • the sixth flow path 241 is formed along the X-axis and in a surface of the second substrate 322 on the negative side in the Z-axis direction.
  • the seventh flow path 242 couples the sixth flow path 241 and the eighth flow path 243 to each other.
  • the seventh flow path 242 is a through hole formed in the second substrate 322 and along the Z-axis.
  • the eighth flow path 243 allows the seventh flow path 242 and the second nozzle N2 to communicate with each other.
  • the eighth flow path 243 is formed along the X-axis and in a surface of the second substrate 322 on the positive side in the Z-axis direction.
  • the third communication flow path Q23 is a flow path that allows the second common liquid chamber K2 and the second nozzle N2 to communicate with each other.
  • the third communication flow path Q23 is a flow path from an opening of the second nozzle N2 on the negative side in the Z-axis direction to the fourth opening O4 formed in an upper surface of the space Ka2.
  • the third communication flow path Q23 of the present exemplary embodiment includes a ninth flow path 231, the second pressure chamber C2, and a tenth flow path 232.
  • the ninth flow path 231 couples the second nozzle N2 and the second pressure chamber C2 to each other.
  • the ninth flow path 231 is a through hole formed along the Z-axis and across the first substrate 321 and the second substrate 322.
  • the second pressure chamber C2 allows the ninth flow path 231 and the tenth flow path 232 to communicate with each other.
  • the second pressure chamber C2 is a space that is elongated along the X-axis and that is formed in the pressure chamber substrate 34.
  • the energy generating portion 44 corresponding to the second nozzle N2 is mounted on a surface of the diaphragm 42 on a side opposite the second pressure chamber C2. It can also be said that the energy generating portion 44 corresponding to the second nozzle N2 is provided midway of the second individual flow path Q2. Note that the energy generating portion 44 corresponding to the second nozzle N2 is an example of a "second energy generating portion".
  • the tenth flow path 232 allows the second pressure chamber C2 and the space Ka2 to communicate with each other. Specifically, the tenth flow path 232 is a through hole formed in the first substrate 321 and along the Z-axis.
  • the ink is filled into the second pressure chamber C2 from the first common liquid chamber K1 through the fourth communication flow path Q24 and the ninth flow path 231.
  • the ink inside the second pressure chamber C2 is ejected through the second nozzle N2 via the ninth flow path 231 with the deformation of the energy generating portion 44.
  • the ink that is supplied to the second individual flow path Q2 from the first common liquid chamber K1 the ink that is not ejected through the second nozzle N2 is stored in the second common liquid chamber K2.
  • FIG. 8 is a cross-sectional view of the first common liquid chamber K1 on the first individual flow path Q1 side
  • FIG. 9 is a cross-sectional view of the first common liquid chamber K1 on the second individual flow path Q2 side.
  • FIG. 10 is a cross-sectional view of the second common liquid chamber K2 on the first individual flow path Q1 side
  • FIG. 11 is a cross-sectional view of the second common liquid chamber K2 on the second individual flow path Q2 side.
  • the first common liquid chamber K1 includes a first surface F1, a second surface F2, a third surface F3, and a fourth surface F4.
  • the first surface F1, the second surface F2, the third surface F3, and the fourth surface F4 constitute wall surfaces of the first common liquid chamber K1.
  • the first surface F1 is a bottom surface of the space Ka1. It can also be said that the first surface F1 is, among the wall surfaces of the space Ka1, the portion that is on the positive side in the Z-axis direction and that extends along the Y-axis.
  • the entire first surface F1 is constituted by the first deforming portion 641. Note that it is only sufficient that at least a portion of the first surface F1 is constituted by the first deforming portion 641.
  • the first deforming portion 641 and the flow path substrate 32 may constitute the first surface F1.
  • the second surface F2 is an upper surface of the space Ka1. It can also be said that the second surface F2 is, among the wall surfaces of the space Ka1, the portion that is on the negative side in the Z-axis direction and that extends along the Y-axis. In other words, the first surface F1 and the second surface F2 oppose each other.
  • the second surface F2 is constituted by the flow path substrate 32.
  • the third surface F3 and the fourth surface F4 are portions of the lateral surfaces of the space Ka1.
  • the third surface F3 and the fourth surface F4 are surfaces that intersect the first surface F1 and the second surface F2.
  • the third surface F3 and the fourth surface F4 are orthogonal to the first surface F1 and the second surface F2.
  • the third surface F3 is, among the lateral surfaces of the space Ka1, the portion that is on the negative side in the X-axis direction and that extends along the Y-axis.
  • the fourth surface F4 is, among the lateral surfaces of the space Ka1, the portion that is on the positive side in the X-axis direction and that extends along the Y-axis.
  • the third surface F3 and the fourth surface F4 oppose each other.
  • the third surface F3 and the fourth surface F4 are constituted by the flow path substrate 32.
  • the first opening 01 is provided in the second surface F2.
  • the first opening O1 opposes the first deforming portion 641.
  • An opening parallel to the XY plane is the first opening O1.
  • the second opening O2 is provided in the third surface F3.
  • the second opening O2 opposes the fourth surface F4.
  • An opening that is parallel to the YZ plane is the second opening O2.
  • the first opening O1 and the second opening O2 are not parallel to each other.
  • the positions of the first opening O1 and the second opening O2 are different in the Z-axis direction. It can also be said that the heights of the first opening O1 and the second opening O2 are different.
  • the position of the first opening O1 in the Z-axis direction is, for example, a position of a center of gravity p1 of the first opening O1 in the Z-axis direction.
  • the position of the second opening O2 in the Z-axis direction is, for example, a position of a center of gravity p2 of the second opening O2 in the Z-axis direction.
  • the first opening O1 is positioned on the negative side in the Z-axis direction with respect to the second opening O2. It can also be said that the first opening O1 is closer to the pressure chamber substrate 34 than the second opening O2. In other words, the first opening O1 is positioned higher than the second opening O2.
  • a distance D1 between the first opening O1 and the first deforming portion 641 and a distance D2 between the second opening O2 and the first deforming portion 641 are different.
  • the distance D1 is, for example, the shortest distance between the center of gravity p1 of the first opening O1 and a surface of the first deforming portion 641 on the negative side in the Z-axis direction.
  • the distance D2 is, for example, the shortest distance between the center of gravity p2 of the second opening O2 and a surface of the first deforming portion 641 on the negative side in the Z-axis direction.
  • the distance D1 is larger than the distance D2.
  • the first opening O1 is farther away from the first deforming portion 641 than the second opening O2.
  • a direction P1 of the first opening O1 and a direction P2 of the second opening O2 are different.
  • the direction P1 of the first opening 01 is a direction of the normal line of the first opening 01. It can also be said that the direction of a central axis of the first flow path 111 is the direction P1 of the first opening O1.
  • the direction P2 of the second opening O2 is a direction of the normal line of the second opening O2. It can also be said that a direction of a central axis of the sixth flow path 241 is the direction P2 of the second opening O2.
  • the direction P1 of the first opening O1 is a direction extending along the Z-axis
  • the direction P2 of the second opening O2 is a direction extending along the X-axis.
  • an angle formed between the direction P1 of the first opening O1 and the direction P2 of the second opening O2 is 90 degrees.
  • the second common liquid chamber K2 includes a fifth surface F5, a sixth surface F6, a seventh surface F7, and an eighth surface F8.
  • the fifth surface F5, the sixth surface F6, the seventh surface F7, and the eighth surface F8 constitute wall surfaces of the second common liquid chamber K2.
  • the fifth surface F5 is a bottom surface of the space Ka2. It can also be said that the fifth surface F5 is, among the wall surfaces of the space Ka2, the portion that is on the positive side in the Z-axis direction.
  • the entire fifth surface F5 is constituted by the second deforming portion 651. Note that it is only sufficient that at least a portion of the fifth surface F5 is constituted by the second deforming portion 651.
  • the second deforming portion 651 and the flow path substrate 32 may constitute the fifth surface F5.
  • the sixth surface F6 is an upper surface of the space Ka2. It can also be said that the sixth surface F6 is, among the wall surfaces of the space Ka2, the portion that is on the negative side in the Z-axis direction. Specifically, the sixth surface F6 is constituted by the flow path substrate 32. The fifth surface F5 and the sixth surface F6 oppose each other.
  • the seventh surface F7 and the eighth surface F8 are portions of the lateral surfaces of the space Ka2.
  • the seventh surface F7 and the eighth surface F8 are surfaces that intersect the fifth surface F5 and the sixth surface F6.
  • the seventh surface F7 and the eighth surface F8 are orthogonal to the fifth surface F5 and the sixth surface F6.
  • the seventh surface F7 is, among the lateral surfaces of the space Ka2, the portion that is on the positive side in the X-axis direction and that extends along the Y-axis.
  • the eighth surface F8 is, among the lateral surfaces of the space Ka2, the portion that is on the negative side in the X-axis direction and that extends along the Y-axis.
  • the seventh surface F7 and the eighth surface F8 oppose each other.
  • the seventh surface F7 and the eighth surface F8 are constituted by the flow path substrate 32.
  • the third opening O3 is provided in the seventh surface F7. In other words, the third opening O3 opposes the eighth surface F8.
  • An opening that is parallel to the YZ plane is the third opening O3.
  • the fourth opening O4 is provided in the sixth surface F6. In other words, the fourth opening O4 opposes the second deforming portion 651.
  • An opening parallel to the XY plane is the fourth opening O4.
  • the third opening O3 and the fourth opening O4 are not parallel to each other.
  • the positions of the third opening O3 and the fourth opening O4 are different in the Z-axis direction. It can also be said that the heights of the third opening O3 and the fourth opening O4 are different.
  • the position of the third opening O3 in the Z-axis direction is, for example, a position of a center of gravity p3 of the third opening O3 in the Z-axis direction.
  • the position of the fourth opening O4 in the Z-axis direction is, for example, a position of a center of gravity p4 of the fourth opening O4 in the Z-axis direction.
  • the fourth opening O4 is positioned on the negative side in the Z-axis direction with respect to the third opening O3. It can also be said that the fourth opening O4 is closer to the pressure chamber substrate 34 than the third opening O3. In other words, the fourth opening O4 is positioned higher than the third opening O3.
  • a distance D3 between the third opening O3 and the second deforming portion 651 and a distance D4 between the fourth opening O4 and the second deforming portion 651 are different.
  • the distance D4 is, for example, the shortest distance between the center of gravity p4 of the fourth opening O4 and a surface of the second deforming portion 651 on the negative side in the Z-axis direction.
  • the distance D3 is, for example, the shortest distance between the center of gravity p3 of the third opening O3 and a surface of the second deforming portion 651 on the negative side in the Z-axis direction.
  • the distance D4 is larger than the distance D3.
  • the fourth opening O4 is farther away from the second deforming portion 651 than the third opening O3.
  • a direction P3 of the third opening O3 and a direction P4 of the fourth opening O4 are different.
  • the direction P3 of the third opening O3 is a direction of the normal line of the third opening O3. It can also be said that the direction P3 of the third opening O3 is a direction of a central axis of the fifth flow path 123.
  • the direction P4 of the fourth opening O4 is a direction of the normal line of the fourth opening O4. It can also be said that the direction P4 of the fourth opening O4 is a direction of a central axis of the tenth flow path 232.
  • the direction P3 of the third opening O3 is a direction extending along the X-axis
  • the direction P4 of the fourth opening O4 is a direction extending along the Z-axis.
  • an angle formed between the direction P3 of the third opening O3 and the direction P4 of the fourth opening O4 is 90 degrees.
  • the first individual flow path Q1 and the second individual flow path Q2 are in an inverted relationship. Accordingly, as illustrated as an example in FIGS. 8 and 11 , the positions of the first opening O1 and the fourth opening O4 are the same in the Z-axis direction. Furthermore, the direction P1 of the first opening O1 and the direction P4 of the fourth opening O4 are the same. In other words, the first opening O1 and the fourth opening O4 are parallel to each other. Furthermore, as illustrated as an example in FIGS. 9 and 10 , the positions of the second opening O2 and the third opening O3 are the same in the Z-axis direction. Furthermore, the second opening O2 and the third opening O3 are parallel to each other. Specifically, the direction P2 of the second opening O2 and the direction P3 of the third opening O3 extend in opposite directions.
  • Crosstalk includes crosstalk caused in a mechanical manner through the structure constituting the flow paths, and crosstalk caused in a hydrodynamic manner through the liquid inside the flow paths.
  • the latter crosstalk is greatly affected by the behavior of the liquid inside the common liquid chambers K (K1 and K2), which are portions where the adjacent individual flow paths Q are fluidly coupled to each other.
  • K1 and K2 are portions where the adjacent individual flow paths Q are fluidly coupled to each other.
  • the effect exerted between the fluxes becomes large and the crosstalk becomes large.
  • the crosstalk becomes larger.
  • the distance between the first opening O1 and the second opening O2 can be large.
  • the distance between the flux occurring near the first opening O1 and the flux occurring near the second opening O2 is larger.
  • the flux occurring near the first opening 01 and the flux occurring near the second opening O2 do not easily affect each other. Accordingly, crosstalk between the first individual flow path Q1 and the second individual flow path Q2 can be reduced.
  • the ejection characteristics are the ejection speed, the ejection direction, and the ejection amount, for example.
  • the direction of the flux occurring near the first opening O1 and the direction of the flux occurring near the second opening O2 are different.
  • the flux occurring near the first opening O1 and the flux occurring near the second opening O2 do not easily affect each other. Accordingly, compared with a configuration in which the direction P1 of the first opening O1 and the direction P2 of the second opening O2 are the same, crosstalk between the first individual flow path Q1 and the second individual flow path Q2 can be reduced. Consequently, errors in the ejection characteristics of the first nozzle N1 and the second nozzle N2 can be reduced.
  • the angle formed between the direction P1 of the first opening O1 and the direction P2 of the second opening O2 is 90 degrees, the effect of reducing crosstalk between the first individual flow path Q1 and the second individual flow path Q2 is prominent.
  • the first opening O1 is closer to the energy generating portion 44 than the second opening O2, propagation of the pressure change, which is caused by the energy generating portion 44, to the first common liquid chamber K1 through the first opening O1 is facilitated.
  • the distance D1 is larger than the distance D2, attenuation of the pressure change propagating from the first opening O1 towards the first deforming portion 641 is facilitated. Accordingly, the effect of reducing crosstalk is prominent.
  • the first opening O1 is provided in the second surface F2, and the second opening O2 is provided in the third surface F3, compared with, for example, a configuration in which the first opening O1 and the second opening O2 are provided in the same surface, the effect of reducing crosstalk is prominent.
  • a flow path length of the first individual flow path O1 and the flow path length of the second individual flow path Q2 are different and errors in the ejection characteristics occur in the first nozzle N1 and the second nozzle N2.
  • the flow path length of the first individual flow path Q1 and the flow path length of the second individual flow path Q2 approximate each other and, accordingly, the errors in the ejection characteristics of the first nozzle N1 and the second nozzle N2 can be reduced.
  • a flow path length of the first individual flow path Q1 and the flow path length of the second individual flow path Q2 are different and errors in the ejection characteristics occur in the first nozzle N1 and the second nozzle N2.
  • the direction P1 of the first opening O1 and the direction P4 of the fourth opening O4 are parallel to each other and the direction P2 of the second opening O2 and the direction P3 of the third opening O3 are parallel to each other; accordingly, the flow path length of the first individual flow path Q1 and the flow path length of the second individual flow path Q2 approximate each other. Accordingly, errors in the ejection characteristics of the first nozzle N1 and the second nozzle N2 can be reduced.
  • the relational configuration between the third opening O3 and the fourth opening O4 can achieve an effect similar to that of the effect achieved by the relational configuration between the first opening O1 and the second opening O2 described above.

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  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
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Claims (11)

  1. Flüssigkeitsausstoßkopf (26), umfassend:
    mehrere Düsen (N), die eine Flüssigkeit entlang einer ersten Achse ausstoßen;
    eine Reihe einzelner Strömungswege (Q), die mehrere einzelne Strömungswege (Q) enthält, die, wenn in einer Richtung der ersten Achse betrachtet, parallel entlang einer zweiten Achse orthogonal zu der ersten Achse angeordnet sind; und
    eine gemeinsame Flüssigkeitskammer (K1), die gemeinsam mit den mehreren einzelnen Strömungswegen (Q) in Kommunikation steht, wobei
    die mehreren einzelnen Strömungswege (Q) einen ersten einzelnen Strömungsweg (Q1) und einen zweiten einzelnen Strömungsweg (Q2) enthalten, die in der Reihe einzelner Strömungswege (Q) benachbart sind,
    dadurch gekennzeichnet, dass der Flüssigkeitsausstoßkopf weiter umfasst
    eine Position einer ersten Öffnung (O1), die ein Verbindungsanschluss zwischen der gemeinsamen Flüssigkeitskammer (K1) und dem ersten einzelnen Strömungsweg (Q1) ist, und eine Position einer zweiten Öffnung (O2), die ein Verbindungsanschluss zwischen der gemeinsamen Flüssigkeitskammer (K1) und dem zweiten einzelnen Strömungsweg (Q2) ist, die sich in der Richtung der ersten Achse unterscheiden.
  2. Flüssigkeitsausstoßkopf (26) nach Anspruch 1, wobei die gemeinsame Flüssigkeitskammer (K1) einen Verformungsabschnitt enthält, der sich in Reaktion auf eine Druckänderung einer Flüssigkeit im Inneren der gemeinsamen Flüssigkeitskammer (K1) verformt, und ein Abstand zwischen der ersten Öffnung (O1) und dem Verformungsabschnitt sich von einem Abstand zwischen der zweiten Öffnung (O2) und dem Verformungsabschnitt unterscheidet.
  3. Flüssigkeitsausstoßkopf (26) nach Anspruch 1, wobei
    die gemeinsame Flüssigkeitskammer (K1) eine erste Oberfläche (F1), eine zweite Oberfläche (F2) und eine dritte Oberfläche (F3) enthält, wobei die erste Oberfläche (F1) und die zweite Oberfläche (F2) einander gegenüberliegen,
    mindestens ein Abschnitt der ersten Oberfläche (F1) aus einem Verformungsabschnitt gebildet ist, der sich in Reaktion auf eine Druckänderung einer Flüssigkeit im Inneren der gemeinsamen Flüssigkeitskammer (K1) verformt,
    die erste Öffnung (O1) in der zweiten Oberfläche (F2) vorgesehen ist, und
    die zweite Öffnung (O2) in der dritten Oberfläche (F3) vorgesehen ist.
  4. Flüssigkeitsausstoßkopf (26) nach Anspruch 1, wobei
    eine Richtung der ersten Öffnung (O1) und eine Richtung der zweiten Öffnung (O2) sich voneinander unterscheiden.
  5. Flüssigkeitsausstoßkopf (26) nach einem der vorstehenden Ansprüche, weiter umfassend:
    eine zweite gemeinsame Flüssigkeitskammer (K2), die gemeinsam mit den mehreren einzelnen Strömungswegen (Q) in Kommunikation steht, wobei
    eine Position einer dritten Öffnung (O3), die ein Verbindungsanschluss zwischen der zweiten gemeinsamen Flüssigkeitskammer (K2) und dem ersten einzelnen Strömungsweg (Q1) ist, und eine Position einer vierten Öffnung (O4), die ein Verbindungsanschluss zwischen der zweiten gemeinsamen Flüssigkeitskammer (K2) und dem zweiten einzelnen Strömungsweg (Q2) ist, in der Richtung der ersten Achse sich voneinander unterscheiden.
  6. Flüssigkeitsausstoßkopf (26) nach Anspruch 5, wobei
    eine Position der ersten Öffnung (O1) und eine Position der vierten Öffnung (O4) in der Richtung der ersten Achse dieselben sind, und
    eine Position der zweiten Öffnung (O2) und eine Position der dritten Öffnung (O3) in der Richtung der ersten Achse dieselben sind.
  7. Flüssigkeitsausstoßkopf (26) nach Anspruch 5, wobei
    die erste gemeinsame Flüssigkeitskammer (K1) einen ersten Verformungsabschnitt (641) enthält, der sich in Reaktion auf eine Druckänderung einer Flüssigkeit im Inneren der ersten gemeinsamen Flüssigkeitskammer (K1) verformt,
    die zweite gemeinsame Flüssigkeitskammer (K2) einen zweiten Verformungsabschnitt (651) enthält, der sich in Reaktion auf eine Druckänderung einer Flüssigkeit im Inneren der zweiten gemeinsamen Flüssigkeitskammer (K2) verformt,
    ein Abstand zwischen der ersten Öffnung (O1) und dem ersten Verformungsabschnitt (641) sich von einem Abstand zwischen der zweiten Öffnung (O2) und dem ersten Verformungsabschnitt (641) unterscheidet, und
    ein Abstand zwischen der dritten Öffnung (O3) und dem zweiten Verformungsabschnitt (651) sich von einem Abstand zwischen der vierten Öffnung (O4) und dem zweiten Verformungsabschnitt (651) unterscheidet.
  8. Flüssigkeitsausstoßkopf (26) nach Anspruch 7, wobei
    in dem ersten einzelnen Strömungsweg (Q1) ein erster Energieerzeugungsabschnitt (44), der Energie zum Ausstoßen der Flüssigkeit erzeugt, in der Mitte eines ersten Kommunikationsströmungswegs (Q11) vorgesehen ist, der die erste gemeinsame Flüssigkeitskammer (K1) und eine erste Düse (N1) von den mehreren Düsen (N) miteinander in Kommunikation bringt,
    in dem zweiten einzelnen Strömungsweg (Q2) ein zweiter Energieerzeugungsabschnitt (44), der Energie zum Ausstoßen der Flüssigkeit erzeugt, in der Mitte eines zweiten Kommunikationsströmungswegs (Q12) vorgesehen ist, der die zweite gemeinsame Flüssigkeitskammer (K2) und eine zweite Düse (N2) von den mehreren Düsen (N) miteinander in Kommunikation bringt,
    ein Abstand zwischen der ersten Öffnung (O1) und dem ersten Verformungsabschnitt (641) größer ist als ein Abstand zwischen der zweiten Öffnung (O2) und dem ersten Verformungsabschnitt (641), und
    ein Abstand zwischen der vierten Öffnung (O4) und dem zweiten Verformungsabschnitt (651) größer ist als ein Abstand zwischen der dritten Öffnung (O3) und dem zweiten Verformungsabschnitt (651).
  9. Flüssigkeitsausstoßkopf (26) nach Anspruch 8, wobei
    die erste Öffnung (O1) dem ersten Verformungsabschnitt (641) gegenüberliegt, und
    die vierte Öffnung (O4) dem zweiten Verformungsabschnitt (651) gegenüberliegt.
  10. Flüssigkeitsausstoßkopf (26) nach Anspruch 5, wobei
    eine Richtung der ersten Öffnung (O1) und eine Richtung der zweiten Öffnung (O2) sich voneinander unterscheiden, und
    eine Richtung der dritten Öffnung (O3) und eine Richtung der vierten Öffnung (O4) sich voneinander unterscheiden.
  11. Flüssigkeitsausstoßvorrichtung (100), umfassend
    einen Flüssigkeitsausstoßkopf (26) nach Anspruch 5; und
    einen Zirkulationsmechanismus (90), der die Flüssigkeit von einer der ersten gemeinsamen Flüssigkeitskammer (K1) und der zweiten gemeinsamen Flüssigkeitskammer (K2) sammelt und der die Flüssigkeit zu der anderen der ersten gemeinsamen Flüssigkeitskammer (K1) und der zweiten gemeinsamen Flüssigkeitskammer (K2) rezirkuliert.
EP19218847.2A 2018-12-21 2019-12-20 Flüssigkeitsausstosskopf und flüssigkeitsausstossvorrichtung Active EP3705296B1 (de)

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JP2019056087A JP7287042B2 (ja) 2018-12-21 2019-03-25 液体噴射ヘッド及び液体噴射システム
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JP2007030361A (ja) * 2005-07-27 2007-02-08 Fujifilm Holdings Corp 液体吐出ヘッド及び画像形成装置
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