KR20020012151A - Head assembly of dot-printer head - Google Patents

Head assembly of dot-printer head Download PDF

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Publication number
KR20020012151A
KR20020012151A KR1020010075740A KR20010075740A KR20020012151A KR 20020012151 A KR20020012151 A KR 20020012151A KR 1020010075740 A KR1020010075740 A KR 1020010075740A KR 20010075740 A KR20010075740 A KR 20010075740A KR 20020012151 A KR20020012151 A KR 20020012151A
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KR
South Korea
Prior art keywords
yoke
head assembly
holder
dot printer
forming
Prior art date
Application number
KR1020010075740A
Other languages
Korean (ko)
Inventor
박종태
Original Assignee
주식회사 네오텍
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Priority to KR1020010075740A priority Critical patent/KR20020012151A/en
Publication of KR20020012151A publication Critical patent/KR20020012151A/en

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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
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/235—Print head assemblies
    • 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
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
    • B41J2/2135—Alignment of dots
    • 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
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/27—Actuators for print wires
    • B41J2/275—Actuators for print wires of clapper 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
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/27—Actuators for print wires
    • B41J2/29—Actuators for print wires of moving-coil 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
    • B41J2/485—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes
    • B41J2/505—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements
    • B41J2/51—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements serial printer type
    • B41J2/512—Adjustment of the dot disposition by adjustment of the arrangement of the dot printing elements of a print head, e.g. nozzles, needles

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Impact Printers (AREA)

Abstract

PURPOSE: Head assembly of a dot printer is provided to improve driving force of an amateur by forming strong magnetic force and to reduce a producing cost by forming silicon steel through piling up one and another. CONSTITUTION: Dot printer head assembly comprises a yoke member(310) forming magnetic passage by an electromagnet; a holder(320) winding a coil on a peripheral face by being connected to the yoke member; a terminal(350) winding an end portion of the coil by being combined to the holder; a circuit board(340) connected to the terminal; a center yoke(311) engaged with the holder by being mounted on the yoke member; and side yokes(312,313) forming the magnetic passage with the center yoke. A print signal of the head assembly in the dot printer is selectively applied to the coil. Then, the coil forms the magnetic circuit with the yoke members to drive an amateur. Thereby, the dot printer head assembly improves driving force of the amateur by forming strong magnetic force.

Description

도트 프린트 헤드 조립체{Head assembly of dot-printer head}Dot print head assembly {Head assembly of dot-printer head}

본 발명은 도트 프린터의 헤드조립체에 관한 것으로서, 특히 니이들을 타격하는 아마추어(armature)가 전자력에 의해 구동되도록 자기회로를 형성하는 요크부재가 개량된 도트프린터의 헤드조립체에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head assembly of a dot printer, and more particularly, to a head assembly of a dot printer having an improved yoke member for forming a magnetic circuit such that an armature striking the needles is driven by an electromagnetic force.

일반적으로 도트 프린터 헤드는 인자신호에 따른 전자력(電磁力)으로 구동하는 복수의 아마추어가 왕복이동이 가능한 복수의 니이들(needle)을 각각 선택적으로 타격하고, 이에 의해서 왕복운동하는 니이들이 잉크시트를 타격하여 기록지에 정보를 인자(印字)시키도록 구동된다.In general, a dot printer head selectively strikes a plurality of needles that can be reciprocated by a plurality of armatures driven by an electromagnetic force in response to a printing signal, whereby the needles reciprocatingly move the ink sheet. It is driven to print the information on the recording paper by hitting it.

이러한 통상의 도트 프린터 헤드가 도 1 및 도 2에 도시되어 있다. 이 도트 프린터 헤드(100)는 복수의 니이들(20)이 슬라이딩 이동가능하게 지지되는 가이드 몸체(10)와, 각 니이들(20)의 단부를 타격하도록 복수의 아마추어(50)를 구동하는 전자석(40)과, 각 아마추어(50)의 간격을 유지시키고 회동중심을 유지시키는 커버부재(70)를 구비한다.Such a conventional dot printer head is shown in FIGS. 1 and 2. The dot printer head 100 includes a guide body 10 on which a plurality of needles 20 are slidably supported, and an electromagnet for driving a plurality of armatures 50 so as to strike end portions of each needle 20. 40 and a cover member 70 for maintaining the center of rotation and maintaining the distance between each armature 50.

상기 가이드 몸체(10)의 선단에는 각 니이들(20)의 선단이 각각 결합되는 복수의 선단가이드공(11)이 일렬로 형성되어 있고, 그 후단에는 각 니이들(20)의 후부가 결합되는 복수의 후단가이드공(12)이 동일 원주상에 형성되어 있다. 한편, 상기 가이드 몸체(10)의 중간부분에는 각 니이들(20)의 중간부분이 결합되는 복수의 센터가이드공(13)이 형성된 가이드판(14)이 결합되어 있다.The front end of the guide body 10 is formed with a plurality of front end guide holes (11) in which the front end of each needle 20 is coupled in a row, the rear end of each of the needle 20 is coupled A plurality of rear end guide holes 12 are formed on the same circumference. On the other hand, the middle of the guide body 10 is coupled to the guide plate 14 formed with a plurality of center guide hole 13 to which the middle portion of each needle 20 is coupled.

상기 전자석(40)은 코일(44)이 권회되고 자기회로를 형성하는 복수의 결합요크(42) 및 이들 결합요크(42)와 일체로 형성되는 요크몸체(41)로 이루어진다. 코일(44)은 결합요크(42)에 결합되는 홀더(45)에 권회된다.The electromagnet 40 includes a plurality of coupling yokes 42 in which the coils 44 are wound and form a magnetic circuit, and a yoke body 41 formed integrally with these coupling yokes 42. The coil 44 is wound around a holder 45 that is coupled to the coupling yoke 42.

한편, 홀더(45)가 결합되는 결합요크(42)의 상부에는 아마츄어(50)가 위치되며, 이 아마츄어(50)에는 보스(51)가 형성되어서 결합요크(42)의 단부와 대응되도록 위치된다. 이 결합요크(42)와 보스(51)는 원형단면으로 형성되어서 상호 대응되도록 위치된다.On the other hand, the armature 50 is located on the upper portion of the coupling yoke 42 to which the holder 45 is coupled, and the boss 50 is formed on the armature 50 so as to correspond to the end of the coupling yoke 42. . The coupling yoke 42 and the boss 51 are formed in a circular cross section so as to correspond to each other.

미설명부호 21은 전자석(40)의 구동으로 동작되는 아마추어(50)에 의해서 타격된 니이들(20)을 복원시키는 스프링이고, 참조번호 80은 전자석에 소정의 신호전류를 인가하는 플렉시블 와이어이다.Reference numeral 21 is a spring for restoring the needle 20 hit by the armature 50 operated by the driving of the electromagnet 40, reference numeral 80 is a flexible wire for applying a predetermined signal current to the electromagnet.

이와 같은 헤드조립체는 인자신호에 따라 각 코일(44)에 선택적으로 전원이 인가되면, 전자력에 의해 아마츄어(50)의 보스(51)가 결합요크(42)측으로 이동되면서 아마츄어(50)의 선단이 니이들(20)을 타격하여 인자하게 된다.When the head assembly is selectively supplied with power to each coil 44 according to the printing signal, the boss 51 of the armature 50 is moved toward the coupling yoke 42 by the electromagnetic force, so that the tip of the armature 50 is moved. The needle 20 will be hit by printing.

그런데, 상기와 같은 도트 프린터 헤드조립체는 다음과 같은 문제점을 가진다.However, the dot printer head assembly as described above has the following problems.

첫째, 결합요크(42)와 요크몸체(41)는 규소분말이 함유된 주물로 제조됨으로써 고가의 금형이 요구된다. 따라서 비용상승의 문제점이 있다.First, the coupling yoke 42 and the yoke body 41 is made of a casting containing silicon powder, so expensive molds are required. Therefore, there is a problem of cost increase.

둘째, 위와 같이 주물제작됨으로써 결합요크(42)의 단부는 주물제작 후 연마공정이 요구된다. 즉, 아마츄어(50)의 보스(51)와 마주보는 결합요크(42)의 단부는 전자력에 의한 보스(51)와의 접촉시 아마츄어(50)의 안정된 구동을 위해 연마가 요구된다. 이로인해 생산성이 저하된다.Second, as the above casting is manufactured, the end of the coupling yoke 42 is required to be polished after casting. That is, the end of the coupling yoke 42 facing the boss 51 of the armature 50 is required to be polished for stable driving of the armature 50 upon contact with the boss 51 by the electromagnetic force. This lowers productivity.

세째, 아마츄어(50)의 일측부에 형성된 보스(51)는 결합요크(42)와 상호 원형단면으로 마주보는 데, 발생된 전자력으로 보스(51)를 끌어당길 때 그 전달효율이 약하다.Third, the boss 51 formed on one side of the armature 50 faces the coupling yoke 42 in a circular cross section, and when the boss 51 is attracted by the generated electromagnetic force, its transmission efficiency is weak.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 요크의 제작비용이 대폭 절감되고 제작공정이 간편해진 도트프린터 헤드 조립체를 제공하는 데 목적이 있다.The present invention has been made in order to solve the above problems, an object of the present invention is to provide a dot printer head assembly that the manufacturing cost of the yoke is greatly reduced and the manufacturing process is simplified.

다른 목적은 아마츄어를 구동하는 구동력이 향상된 도트프린터의 헤드조립체를 제공하는 데 있다.Another object is to provide a head assembly of a dot printer with improved driving force for driving an amateur.

도 1은 종래 헤드조립체를 나타낸 단면도,1 is a cross-sectional view showing a conventional head assembly,

도 2는 도 1의 요부 단면도,2 is a sectional view of the main part of FIG. 1;

도 3은 본 발명 헤드 조립체를 나타낸 단면도,3 is a cross-sectional view showing a head assembly of the present invention;

도 4는 도 3의 조립체중 전자석을 발췌하여 나타낸 사시도이다.4 is a perspective view illustrating an electromagnet taken from the assembly of FIG. 3.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

210...가이드몸체 300...전자석210 Guide body 300 Electromagnet

250...아마추어 220...니이들250 ... amateur 220 ... they

330...코일 320...홀더330 ... coil 320 ... holder

350...단자 340...회로기판350 ... terminal 340 ... circuit board

상기 목적을 달성하는 본 발명은 복수개의 니이들을 선택적으로 출몰가능하게 결합시키는 가이드몸체와, 전자기회로에 의해 구동되어 복수개의 니이들을 선택적으로 타격하는 복수개의 아마추어를 구비하는 도트 프린터의 헤드조립체에 있어서,The present invention which achieves the above object is a head assembly of a dot printer having a guide body for selectively engaging the plurality of needles, and a plurality of armatures driven by an electromagnetic circuit selectively hitting the plurality of needles In

상기 전자기회로는 자로를 형성하는 요크부재와, 이 요크부재에 결합되며 그 외주면에 코일이 권회되는 홀더와, 이 홀더에 결합되며 상기 코일의 단부가 소정횟수로 권회되는 단자와, 이 단자가 접속되는 회로기판을 구비하며,The electromagnetic circuit includes a yoke member forming a magnetic path, a holder coupled to the yoke member and having a coil wound on the outer circumferential surface thereof, a terminal coupled to the holder and having an end portion of the coil wound at a predetermined number of times; It has a circuit board to be connected,

상기 요크부재는 상기 홀더가 결합되는 센터요크와, 이 센터요크와 함께 자로를 형성하는 사이드요크로 이루어지며,The yoke member is composed of a center yoke to which the holder is coupled, and a side yoke forming a gyro together with the center yoke.

상기 센터요크와 사이드요크가 형성된 요크부재는 복수개의 규소강판이 상호 중첩적으로 접합형성 된 것을 특징으로 한다.The yoke member in which the center yoke and the side yoke are formed is characterized in that a plurality of silicon steel plates are formed to overlap each other.

상기 본 발명의 특징에 따르면, 상기 요크부재는 센터요크와 사이드요크로 형성되고 복수개의 규소강판이 중첩적으로 형성됨으로써 강한 자기력을 형성하여 아마츄어의 구동력을 향상시킨다.According to a feature of the present invention, the yoke member is formed of a center yoke and a side yoke and a plurality of silicon steel sheets are formed overlapping to form a strong magnetic force to improve the driving force of the amateur.

이하 첨부된 도면을 참조하면서 본 발명에 따른 바람직한 일 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 도트 프린터의 헤드 조립체는 도 3 및 도 4를 참조하면, 도트 프린터 헤드(200)는 복수의 니이들(220)이 슬라이딩 이동가능하게 지지되는 가이드 몸체(210)와, 각 니이들(220)의 단부를 타격하도록 복수의 아마추어(250)를 구동하는 전자석(240)과, 각 아마추어(250)의 간격을 유지시키고 회동중심을 유지시키는 커버부재(270)를 구비한다.3 and 4, the dot printer head 200 includes a guide body 210 in which a plurality of needles 220 are slidably supported, and each needle. An electromagnet 240 for driving the plurality of armatures 250 to strike the end of the 220, and a cover member 270 for maintaining the center of rotation and the interval of each armature 250 is provided.

상기 가이드 몸체(210)의 선단에는 각 니이들(220)의 선단이 각각 결합되는 복수의 선단가이드공(211)이 일렬로 형성되어 있고, 그 후단에는 각 니이들(220)의 후부가 결합되는 복수의 후단가이드공(212)이 동일 원주상에 형성되어 있다. 한편, 상기 가이드 몸체(210)의 중간부분에는 각 니이들(220)의 중간부분이 결합되는 복수의 센터가이드공(213)이 형성된 가이드판(214)이 결합되어 있다.At the front end of the guide body 210, a plurality of front end guide holes 211 to which the front ends of each needle 220 are coupled are formed in a row, and the rear end of each of the needles 220 is coupled to the rear end thereof. A plurality of rear end guide holes 212 are formed on the same circumference. On the other hand, the guide plate 214 is formed in the middle portion of the guide body 210 is formed with a plurality of center guide hole 213 is coupled to the middle portion of each needle 220.

도 4를 참조하면, 상기 전자석(300)은 자로(磁路)를 형성하는 요크부재(310)와, 이 요크부재(310)에 결합되며 그 외주면에 코일(330)이 권회되는 홀더(320)와, 이 홀더(320)에 결합되며 코일(330)의 단부가 소정횟수로 권회되는 단자(350)와, 이 단자(350)가 접속되는 회로기판(340)을 구비한다.Referring to FIG. 4, the electromagnet 300 includes a yoke member 310 forming a magnetic path and a holder 320 coupled to the yoke member 310 and having a coil 330 wound on an outer circumferential surface thereof. And a terminal 350 coupled to the holder 320 and having an end of the coil 330 wound a predetermined number of times, and a circuit board 340 to which the terminal 350 is connected.

상기 요크부재(310)는 상기 홀더(320)가 결합되는 센터요크(311)와, 이 센터요크(311)와 함께 자로를 형성하는 사이드요크(312,313)로 이루어지며, 센터요크(311)와 사이드요크(312,313)가 형성된 요크부재(310)는 복수개의 규소강판이 상호 중첩적으로 접합형성된다. 이 요크부재(310)는 프레스 가공으로 형성된다.The yoke member 310 is composed of a center yoke 311 to which the holder 320 is coupled, and side yokes 312 and 313 forming a stool together with the center yoke 311. In the yoke member 310 having the yokes 312 and 313 formed thereon, a plurality of silicon steel sheets are bonded to each other in a superimposed manner. This yoke member 310 is formed by press working.

한편, 도 3에 도시된 바와 같이, 아마츄어(250)는 그 일단이 일측 사이드요크(312)에 대응되어 위치된다. 이 아마츄어(250)의 일단은 커버부재(270)의 힌지핀(271)에 회동가능하게 결합된다. 아마츄어(250)의 타단은 니이들(220)의 단부에 얹혀있게 된다.On the other hand, as shown in Figure 3, the end of the armature 250 is located corresponding to one side yoke (312). One end of the armature 250 is rotatably coupled to the hinge pin 271 of the cover member 270. The other end of the amateur 250 is placed on the end of the needle (220).

상기와 같이 구성된 본 발명에 따른 도트 프린터의 헤드조립체는 인쇄신호가 각 코일(330)에 선택적으로 인가되면, 신호가 인가된 각 코일(330)은 요크부재(310)와 함께 전자기회로를 형성하고 대응된 아마추어(250)를 구동시킨다. 이때 각 아마추어(250)는 선택된 니이들(220)을 타격하고, 각 니이들(220)의 선단은 잉크시트(미도시)를 타격하여 소정패턴의 문자나 도형을 기록지(미도시)에 인자(印字)한다.In the head assembly of the dot printer according to the present invention configured as described above, when a printing signal is selectively applied to each coil 330, each coil 330 to which the signal is applied forms an electromagnetic circuit together with the yoke member 310. And drive the corresponding armature 250. At this time, each armature 250 hits the selected needle 220, and the tip of each needle 220 hits an ink sheet (not shown) to print a character or figure of a predetermined pattern on the recording paper (not shown).印字) to.

한편, 자기회로에 의해 발생된 전자력은 센터요크(311)에서 가장 강하게 발생되어 사이드요크(313)에 발생된 전자력과 함께 아마츄어(250)를 강한 전자력으로 안정하게 구동시킨다.Meanwhile, the electromagnetic force generated by the magnetic circuit is most strongly generated in the center yoke 311 to stably drive the armature 250 with a strong electromagnetic force together with the electromagnetic force generated in the side yoke 313.

상기 본 발명에 따른 도트 프린터의 헤드조립체는 상기 실시예에 한정되지 않고 본원의 정신과 범위를 이탈하지 아니하고 많은 변형,제조가 가능함은 두말할 것도 없다.Needless to say, the head assembly of the dot printer according to the present invention is not limited to the above embodiment and can be modified and manufactured without departing from the spirit and scope of the present application.

상술한 바와 같은 본 발명에 따른 도트 프린터의 헤드조립체는 요크부재(310)가 센터요크(311)와 사이드요크(312,313)로 형성되고 복수개의 규소강판이 중첩적으로 형성됨으로써 강한 자기력을 형성하여 아마츄어(250)의 구동력을 향상시킨다.In the head assembly of the dot printer according to the present invention as described above, the yoke member 310 is formed of the center yoke 311 and the side yokes 312 and 313, and a plurality of silicon steel sheets are formed to overlap to form a strong magnetic force. The driving force of 250 is improved.

또한, 요크부재는 프레스가공된 규소강판을 중첩적으로 접합시킨 구조로 형성됨으로써 그 제작이 간편하고 비용을 대폭 절감시킨다.In addition, the yoke member is formed of a structure in which the press-processed silicon steel sheet is superimposed and bonded, thereby simplifying the manufacturing and greatly reducing the cost.

Claims (1)

복수개의 니이들을 선택적으로 출몰가능하게 결합시키는 가이드몸체와, 전자기회로에 의해 구동되어 복수개의 니이들을 선택적으로 타격하는 복수개의 아마추어를 구비하는 도트 프린터의 헤드조립체에 있어서,In the head assembly of the dot printer having a guide body for selectively engaging the plurality of needles, and a plurality of armatures driven by an electromagnetic circuit to selectively hit the plurality of needles, 상기 전자기회로는 자로를 형성하는 요크부재(310)와, 이 요크부재에 결합되며 그 외주면에 코일이 권회되는 홀더(320)와, 이 홀더에 결합되며 상기 코일의 단부가 소정횟수로 권회되는 단자(350)와, 이 단자가 접속되는 회로기판(340)을 구비하며,The electromagnetic circuit includes a yoke member 310 forming a magnetic path, a holder 320 coupled to the yoke member and having a coil wound on an outer circumferential surface thereof, and coupled to the holder and having an end portion of the coil wound a predetermined number of times. A terminal 350 and a circuit board 340 to which the terminal is connected; 상기 요크부재(310)는 상기 홀더(320)가 결합되는 센터요크(311)와, 이 센터요크와 함께 자로를 형성하는 사이드요크(312,313)로 이루어지며,The yoke member 310 is composed of a center yoke 311 to which the holder 320 is coupled, and side yokes 312 and 313 forming a jaw together with the center yoke. 상기 센터요크와 사이드요크가 형성된 요크부재는 복수개의 규소강판이 상호 중첩적으로 접합형성 된 것을 특징으로 하는 도트 프린터의 헤드조립체.The yoke member in which the center yoke and the side yoke are formed is a head assembly of a dot printer, characterized in that a plurality of silicon steel sheets are formed to overlap each other.
KR1020010075740A 2001-11-28 2001-11-28 Head assembly of dot-printer head KR20020012151A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4772141A (en) * 1982-10-27 1988-09-20 Royden C. Sanders, Jr. Dot matrix printhead pin driver and method of assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4772141A (en) * 1982-10-27 1988-09-20 Royden C. Sanders, Jr. Dot matrix printhead pin driver and method of assembly

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