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KR100238050B1 - Ink jet printer head - Google Patents

Ink jet printer head Download PDF

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Publication number
KR100238050B1
KR100238050B1 KR1019970073053A KR19970073053A KR100238050B1 KR 100238050 B1 KR100238050 B1 KR 100238050B1 KR 1019970073053 A KR1019970073053 A KR 1019970073053A KR 19970073053 A KR19970073053 A KR 19970073053A KR 100238050 B1 KR100238050 B1 KR 100238050B1
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KR
South Korea
Prior art keywords
ink
nozzle
printer head
backflow
inkjet printer
Prior art date
Application number
KR1019970073053A
Other languages
Korean (ko)
Other versions
KR19990053428A (en
Inventor
이병찬
백오현
신수호
Original Assignee
윤종용
삼성전자주식회사
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Priority to KR1019970073053A priority Critical patent/KR100238050B1/en
Publication of KR19990053428A publication Critical patent/KR19990053428A/en
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Publication of KR100238050B1 publication Critical patent/KR100238050B1/en

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    • 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
    • B41J2/14209—Structure of print heads with piezoelectric elements of finger type, chamber walls consisting integrally of piezoelectric material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
    • 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
    • B41J2/14016—Structure of bubble jet print heads
    • B41J2/14032—Structure of the pressure chamber
    • B41J2/1404—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
    • 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
    • B41J2/1433—Structure of nozzle plates
    • 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
    • B41J2/16—Production of nozzles
    • B41J2/1601—Production of bubble jet print heads
    • B41J2/1604—Production of bubble jet print heads of the edge shooter type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • 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
    • 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
    • B41J2002/14379—Edge shooter

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

본 발명은 잉크 토출시에 잉크 챔버내의 잉크가 노즐 오리피스의 반대 방향으로 역류되는 것을 억제하므로써 잉크 토출 효율을 향상시킬 수 있도록 한 잉크젯 프린터 헤드에 관한 것이다.The present invention relates to an inkjet printer head capable of improving ink ejection efficiency by suppressing backflow of ink in the ink chamber in the opposite direction of the nozzle orifice during ink ejection.

이를 위한 본 발명에 따른 잉크젯 프린터 헤드는 기판과 캡 사이에는 다수개의 노즐 플레이트가 그의 고정부에서 고정 설치되고, 상기 캡의 상층과 기판의 하층에는 노즐 플레이트를 작동시키기 위한 서로 다른 극성의 영구자석이 각각 설치되며, 상기 노즐 플레이트 사이의 공간에는 잉크 챔버가 형성되어, 상기 노즐 플레이트가 변위되는 것에 의해 잉크 챔버의 잉크가 노즐 오리피스를 통해 토출되도록 된 잉크젯 프린터 헤드에 있어서, 상기 잉크 챔버에는 잉크가 상기 노즐 오리피스의 반대 방향으로 역류되는 것을 방지하기 위한 역류 방지 수단이 배치되며, 상기 역류 방지 수단은 잉크의 역류는 억제하는 한편 리풀은 용이하게 이루어질 수 있도록 사다리꼴 형상을 갖는 것을 특징으로 한다.In the inkjet printer head according to the present invention, a plurality of nozzle plates are fixedly installed between the substrate and the cap at their fixing portions, and permanent magnets having different polarities for operating the nozzle plates are provided at the upper layer and the lower layer of the cap. And an ink chamber formed in a space between the nozzle plates, wherein the ink of the ink chamber is discharged through the nozzle orifice by displacing the nozzle plate. A backflow prevention means is disposed to prevent backflow in the opposite direction of the nozzle orifice, and the backflow prevention means has a trapezoidal shape so that the backflow of the ink can be suppressed while the reflow can be easily performed.

상기와 같이 구성된 잉크젯 프린터 헤드에 의하면, 잉크 토출시에 잉크 챔버내의 잉크가 노즐 오리피스의 반대 방향으로 역류되는 것이 역류 방지 수단에 의해 억제되는 한편, 역류된 잉크는 잉크의 미토출시에 용이하게 리풀된다.According to the ink jet printer head configured as described above, it is suppressed by the backflow preventing means that the ink in the ink chamber flows back in the opposite direction of the nozzle orifice at the time of ink ejection, while the backflowed ink is easily repulsed when the ink is not ejected. .

따라서, 잉크 토출 효율을 향상시킬 수 있게 된다.Therefore, ink discharge efficiency can be improved.

Description

잉크젯 프린터 헤드Inkjet printer head

본 발명은 잉크 토출시에 잉크 챔버내의 잉크가 노즐 오리피스의 반대 방향으로 역류되는 것을 억제하므로써 잉크 토출 효율을 향상시킬 수 있도록 한 잉크젯 프린터 헤드에 관한 것이다.The present invention relates to an inkjet printer head capable of improving ink ejection efficiency by suppressing backflow of ink in the ink chamber in the opposite direction of the nozzle orifice during ink ejection.

일반적으로 잉크젯 프린터는 도트 프린터와 달리 카트리지의 사용에 따라 다양한 칼라의 구현이 가능하고 소음이 적으며, 인자 품질이 미려하다는 많은 장점을 갖고 있어 점차 그 사용영역이 확대되고 있는 추세에 있다.In general, inkjet printers, unlike dot printers, have various advantages in that various colors can be implemented, noise is low, and printing quality is beautiful according to the use of cartridges.

도 1은 종래의 잉크젯 프린터 헤드를 도시한 사시도이다.1 is a perspective view showing a conventional inkjet printer head.

잉크젯 프린터 헤드(1)에는 디귿자 형상을 갖는 다수개의 노즐 플레이트(2)가 구비된다.The inkjet printer head 1 is provided with a plurality of nozzle plates 2 having a depression shape.

노즐 플레이트(2)는 그의 후단에 형성된 고정부(2',2')에서 기판(3)과 캡(4) 사이에 고정 설치되고, 캡(4)의 상층과 기판(3)의 하층에는 각각의 노즐 플레이트(2)들을 작동시키도록 서로 다른 극성의 영구자석(N,S)이 설치되며, 각각의 노즐 플레이트(2)에는 미소 직경의 노즐 오리피스(5)가 형성되어 있다.The nozzle plate 2 is fixedly installed between the substrate 3 and the cap 4 at the fixing portions 2 ', 2' formed at the rear end thereof, and is disposed on the upper layer of the cap 4 and the lower layer of the substrate 3, respectively. Permanent magnets (N, S) of different polarities are installed to operate the nozzle plates (2) of each, and each nozzle plate (2) is formed with a nozzle diameter orifice (5) of small diameter.

도전성이 좋은 구리를 사용하여 박막 형태로 제조되는 다수개의 노즐 플레이트(2)의 좌우측 레버(2",2") 사이의 공간에는 잉크가 수납되며, 잉크가 수납되는 잉크 챔버(I)는 도시하지 않은 밀봉 부재에 의해 밀봉된다.Ink is stored in the space between the left and right levers 2 ", 2" of the plurality of nozzle plates 2 made of thin film using copper having good conductivity, and the ink chamber I containing the ink is not shown. Sealed by a non-sealing member.

이하, 도 1 내지 도 3을 참조로 하여 종래 잉크젯 프린터 헤드의 잉크 분사 작용을 설명한다.Hereinafter, the ink jetting action of the conventional inkjet printer head will be described with reference to FIGS.

도 2는 도 1의 정면도이고, 도 3은 종래의 잉크젯 프린터 헤드의 잉크 분사시의 상태도이다.Fig. 2 is a front view of Fig. 1, and Fig. 3 is a state diagram at the time of ink ejection of a conventional ink jet printer head.

노즐 플레이트(2)가 고정되는 캡(4)의 상층과 기판(3)의 하층에는 서로 다른 극성을 갖는 영구자석(N,S)이 배치되어 있는바, 제어부(미도시)의 제어 신호에 따라 각각의 노즐 플레이트(2)에 도 2에 도시한 바와 같이 전류가 인가되면, 노즐 플레이트(2)의 레버(2",2")간에는 인력이 발생된다.Permanent magnets N and S having different polarities are disposed in the upper layer of the cap 4 to which the nozzle plate 2 is fixed and the lower layer of the substrate 3, according to a control signal of a controller (not shown). When a current is applied to each nozzle plate 2 as shown in Fig. 2, an attraction force is generated between the levers 2 ", 2" of the nozzle plate 2.

이와 같이 노즐 플레이트(2)의 레버(2",2")간에 인력이 발생되면 레버(2",2")가 도 3에 도시한 바와 같이 잉크 챔버(I)를 향해 휘어지게 되고, 이로 인해, 레버(2",2") 사이의 잉크 수납 공간(I)에 수납되어 있던 잉크가 노즐 오리피스(5)들을 통해 토출되며, 레버는 최대 변위 지점(A)에서 최대로 휘어지게 된다.As such, when an attractive force is generated between the levers 2 ", 2" of the nozzle plate 2, the levers 2 ", 2" are bent toward the ink chamber I as shown in FIG. The ink stored in the ink receiving space I between the levers 2 ", 2" is discharged through the nozzle orifices 5, and the lever is bent at the maximum displacement point A to the maximum.

상기와 같은 잉크 토출 작용시에 잉크 챔버에 수납되어 있던 잉크중 레버의 최대 변위 지점과 고정부 사이의 잉크는 레버가 휘어질 때 노즐 오리피스를 통해 토출되지 못하고 노즐 오리피스의 반대 방향으로 역류된다.In the ink ejection action as described above, the ink between the maximum displacement point of the lever and the fixed portion of the ink contained in the ink chamber is not discharged through the nozzle orifice when the lever is bent and flows backward in the direction opposite to the nozzle orifice.

따라서, 잉크 챔버내의 잉크를 효율적으로 토출시키지 못하게 되어 잉크 토출 효율이 저하되는 문제점이 있었다.Therefore, there is a problem that the ink discharge efficiency is lowered because the ink in the ink chamber cannot be discharged efficiently.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 잉크 토출시에 잉크 챔버내의 잉크가 노즐 오리피스의 반대 방향으로 역류되는 것을 억제하므로써 잉크 토출 효율을 향상시킬 수 있도록 한 잉크젯 프린터 헤드를 제공하는 것을 목적으로 한다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an inkjet printer head capable of improving ink ejection efficiency by suppressing backflow of ink in the ink chamber in the opposite direction of the nozzle orifice during ink ejection. It is done.

도 1은 종래의 잉크젯 프린터 헤드의 사시도.1 is a perspective view of a conventional inkjet printer head.

도 2는 도1의 정면도.2 is a front view of FIG. 1;

도 3은 종래의 잉크젯 프린터 헤드의 잉크 분사 상태도.3 is an ink jetting state diagram of a conventional ink jet printer head.

도 4는 본 발명의 일실시예에 따른 역류 방지 수단의 작용 상태도.Figure 4 is an operational state diagram of the backflow prevention means according to an embodiment of the present invention.

도 5는 본 발명의 다른 실시예에 따른 역류 방지 수단의 작용 상태도.5 is an operational state diagram of the backflow prevention means according to another embodiment of the present invention.

도 6은 본 발명의 또다른 실시예에 따른 역류 방지 수단의 작용 상태도.6 is an operational state diagram of the backflow prevention means according to another embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

2a',2b',2c' : 고정부 2a",2b",2c" : 레버2a ', 2b', 2c ': Fixing part 2a ", 2b", 2c ": Lever

5 : 노즐 오리피스 6,6' : 역류 방지 수단5: nozzle orifice 6,6 ': backflow prevention means

상기 목적을 달성하기 위한 본 발명에 따른 잉크젯 프린터 헤드는 기판과 캡 사이에는 다수개의 노즐 플레이트가 그의 고정부에서 고정 설치되고, 상기 캡의 상층과 기판의 하층에는 노즐 플레이트를 작동시키기 위한 서로 다른 극성의 영구자석이 각각 설치되며, 상기 노즐 플레이트 사이의 공간에는 잉크 챔버가 형성되어, 상기 노즐 플레이트가 변위되는 것에 의해 잉크 챔버의 잉크가 노즐 오리피스를 통해 토출되도록 된 잉크젯 프린터 헤드에 있어서, 상기 잉크 챔버에는 잉크가 상기 노즐 오리피스의 반대 방향으로 역류되는 것을 방지하기 위한 역류 방지 수단이 배치되는 것을 특징으로 한다.The inkjet printer head according to the present invention for achieving the above object is a plurality of nozzle plates are fixedly installed between the substrate and the cap at its fixing portion, and different polarities for operating the nozzle plate on the upper layer of the cap and the lower layer of the substrate. In the inkjet printer head is provided with a permanent magnet of each, the ink chamber is formed in the space between the nozzle plate, the ink of the ink chamber is discharged through the nozzle orifice by the displacement of the nozzle plate, the ink chamber And backflow preventing means for preventing ink from flowing back in the opposite direction of the nozzle orifice.

이하, 도 4 내지 도 6을 참조로 하여 본 발명에 따른 잉크젯 프린터 헤드의 바람직한 실시예를 상세히 설명한다.Hereinafter, a preferred embodiment of the inkjet printer head according to the present invention will be described in detail with reference to FIGS. 4 to 6.

도 4는 본 발명의 일실시예에 따른 역류 방지 수단의 작용 상태를 도시한 것이다.Figure 4 shows the operating state of the backflow prevention means according to an embodiment of the present invention.

기판과 캡 사이에 배치되어 고정부(2a',2a')에서 고정 설치되는 노즐 플레이트(2a)의 레버(2a",2a")에는 레버(2a",2a") 사이의 잉크 챔버(I)를 향해 돌출되도록 서로 마주보는 한쌍의 돌출부(6,6)가 형성되어 있다.The ink chamber I between the levers 2a ", 2a" is provided in the levers 2a ", 2a" of the nozzle plate 2a, which is disposed between the substrate and the cap and fixedly installed at the fixing parts 2a ', 2a'. A pair of protrusions 6 and 6 facing each other are formed so as to protrude toward.

돌출부(6,6)는 잉크가 노즐 오리피스(5)의 반대 방향으로 역류되는 것은 억제하는 한편, 역류된 잉크의 리풀(refull)이 용이하게 이루어질 수 있도록 도시한 바와 같은 형상을 가지며, 레버(2a",2a")의 최대 변위 지점(A)과 고정부(2a',2a') 사이의 지점에 형성된다.The protrusions 6 and 6 have a shape as shown so that ink can be easily reversed in the opposite direction of the nozzle orifice 5, while reflowing of the reversed ink can be easily performed, and the lever 2a Is formed at the point between the maximum displacement point A of ", 2a " and the fixing portions 2a ', 2a'.

도 5는 본 발명의 다른 실시예에 따른 역류 방지 수단의 작용 상태도를 도시한 것으로, 노즐 플레이트(2b)의 고정부(2b',2b')를 레버(2b",2b")에 대해 직각으로 절곡하여 형성하므로써, 돌출부(6,6)와 고정부(2b',2b')에서 잉크의 역류 방지 작용이 이루어지도록 하여 역류 방지 효과를 향상시킨 것이다.FIG. 5 is a view illustrating a state of operation of the backflow preventing means according to another embodiment of the present invention, wherein the fixing parts 2b 'and 2b' of the nozzle plate 2b are perpendicular to the levers 2b "and 2b". By bending and forming, the reverse flow prevention effect of the ink is performed at the protrusions 6 and 6 and the fixing portions 2b 'and 2b', thereby improving the reverse flow prevention effect.

도 6은 본 발명의 또다른 실시예에 따른 역류 방지 수단의 작용 상태도를 도시한 것이다.Figure 6 shows an operational state diagram of the backflow prevention means according to another embodiment of the present invention.

노즐 플레이트(2c)의 레버(2c",2c") 사이의 공간, 즉 잉크 챔버(I)에는 단면 형상이 사다리꼴인 역류 방지 구조물(6')이 기판 또는 캡에 고정 설치된다.In the space between the levers 2c "and 2c" of the nozzle plate 2c, that is, the ink chamber I, a backflow prevention structure 6 'having a trapezoidal cross-sectional shape is fixed to the substrate or the cap.

이러한 역류 방지 구조물(6')은 잉크가 노즐 오리피스(5)의 반대 방향으로 역류되는 것은 억제하는 한편, 역류된 잉크의 리풀(refull)이 용이하게 이루어질 수 있도록 하기 위해 레버(2c",2c")의 최대 변위 지점(A)과 고정부(2c',2c') 사이의 지점에 도시한 바와 같은 형상으로 설치된다.This backflow prevention structure 6 'prevents the ink from flowing back in the opposite direction of the nozzle orifice 5, while levers 2c ", 2c" are used to facilitate the reflow of the backflowed ink. It is provided in the shape as shown at the point between the largest displacement point A of () and fixing part 2c ', 2c'.

이에 따라, 잉크 챔버(I)내의 잉크중 레버의 최대 변위 지점(A) 후방에 수납되어 있는 잉크는 잉크 토출시에 노즐 오리피스(5)의 반대 방향, 즉 굵은 화살표로 표시한 방향을 따라 역류되려고 하지만, 최대 변위 지점(A)의 후방에 배치되어 있는 돌출부(6,6)와 고정부(2b',2b') 또는 역류 방지 구조물(6')에 의해 역류가 억제되므로, 노즐 오리피스(5)를 통해 토출되는 잉크 양이 증가되어 잉크 토출 효율이 향상된다.Accordingly, the ink contained behind the maximum displacement point A of the lever in the ink in the ink chamber I is intended to flow back in the opposite direction of the nozzle orifice 5, that is, indicated by the thick arrow, at the time of ink ejection. However, since the backflow is suppressed by the protrusions 6 and 6 and the fixing parts 2b 'and 2b' or the backflow preventing structure 6 'disposed behind the maximum displacement point A, the nozzle orifice 5 By increasing the amount of ink discharged through the ink is improved ink discharge efficiency.

한편, 역류 방지 수단(6과 6')은 잉크의 리풀이 용이하게 이루어질 수 있도록 사다리꼴 형상으로 형성되어 있으므로, 잉크 토출시에 역류된 잉크가 잉크 미토출시에는 가는 화살표로 표시한 방향을 따라 용이하게 리풀된다.On the other hand, since the backflow preventing means 6 and 6 'are formed in a trapezoidal shape so that the ink can be easily repulsed, the backflowed ink at the time of ink ejection is easily along the direction indicated by a thin arrow when the ink is not ejected. It is repooled.

상기와 같이 구성된 잉크젯 프린터 헤드에 의하면, 잉크 토출시에 잉크 챔버내의 잉크가 노즐 오리피스의 반대 방향으로 역류되는 것이 역류 방지 수단에 의해 억제되는 한편, 역류된 잉크는 잉크의 미토출시에 용이하게 리풀된다.According to the ink jet printer head configured as described above, it is suppressed by the backflow preventing means that the ink in the ink chamber flows back in the opposite direction of the nozzle orifice at the time of ink ejection, while the backflowed ink is easily repulsed when the ink is not ejected. .

따라서, 잉크 토출 효율을 향상시킬 수 있게 된다.Therefore, ink discharge efficiency can be improved.

Claims (4)

기판과 캡 사이에는 다수개의 노즐 플레이트가 그의 고정부에서 고정 설치되고, 상기 캡의 상층과 기판의 하층에는 노즐 플레이트를 작동시키기 위한 서로 다른 극성의 영구자석이 각각 설치되며, 상기 노즐 플레이트 사이의 공간에는 잉크 챔버가 형성되어, 상기 노즐 플레이트가 변위되는 것에 의해 잉크 챔버의 잉크가 노즐 오리피스를 통해 토출되도록 된 잉크젯 프린터 헤드에 있어서,A plurality of nozzle plates are fixedly installed between the substrate and the cap at their fixing portions, and permanent magnets having different polarities for operating the nozzle plates are respectively installed in the upper layer and the lower layer of the cap, and the space between the nozzle plates. An ink chamber is formed in the ink jet printer head in which ink of the ink chamber is discharged through the nozzle orifice by displacing the nozzle plate. 상기 잉크 챔버에는 잉크가 상기 노즐 오리피스의 반대 방향으로 역류되는 것을 방지하기 위한 역류 방지 수단이 배치되는 것을 특징으로 하는 잉크젯 프린터 헤드.And the backflow preventing means is arranged in the ink chamber to prevent ink from flowing back in the opposite direction of the nozzle orifice. 제 1항에 있어서, 상기 역류 방지 수단이 상기 노즐 플레이트에 형성되는 돌출부로 이루어지는 것을 특징으로 하는 잉크젯 프린터 헤드.An inkjet printer head according to claim 1, wherein said backflow prevention means comprises a protrusion formed on said nozzle plate. 제 1항에 있어서, 상기 역류 방지 수단이 상기 기판에 설치되는 소정 형상의 구조물로 이루어지는 것을 특징으로 하는 잉크젯 프린터 헤드.An inkjet printer head according to claim 1, wherein said backflow prevention means is made of a structure of a predetermined shape provided on said substrate. 제 3항에 있어서, 상기 구조물이 사다리꼴 형상의 단면을 갖도록 형성되는 것을 특징으로 하는 잉크젯 프린터 헤드.The inkjet printer head of claim 3, wherein the structure has a trapezoidal cross section.
KR1019970073053A 1997-12-24 1997-12-24 Ink jet printer head KR100238050B1 (en)

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KR102600539B1 (en) 2017-11-30 2023-11-09 악살타 코팅 시스템즈 게엠베하 Systems and corresponding methods for application of coating compositions utilizing high delivery efficiency applicators
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