JPS61144360A - Ink jet head and its preparation - Google Patents
Ink jet head and its preparationInfo
- Publication number
- JPS61144360A JPS61144360A JP26797984A JP26797984A JPS61144360A JP S61144360 A JPS61144360 A JP S61144360A JP 26797984 A JP26797984 A JP 26797984A JP 26797984 A JP26797984 A JP 26797984A JP S61144360 A JPS61144360 A JP S61144360A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle plate
- hole
- molding
- head
- notch
- 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.)
- Pending
Links
- 238000000465 moulding Methods 0.000 claims abstract description 10
- 238000001746 injection moulding Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
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
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1637—Manufacturing processes molding
-
- 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
- B41J2/162—Manufacturing of the nozzle plates
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
【発明の詳細な説明】
技術分野
本発明は、インクジェット記録装置に使用するインクジ
ェットヘッド及びその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an inkjet head used in an inkjet recording apparatus and a method for manufacturing the same.
従来鼓車
インクジェット記録装置においては、インク滴を噴射す
るためにインクジェットヘッドを使用するが、従来のイ
ンフジエラヘッドは、ヘッド本体にノズルプレートを接
着して構成していた。そのため、接着強度が弱く、また
、接着剤がインク液で膨潤して長期間にわたって強度を
維持することができない。また、オリフィス（ノズル孔
）部分その他の不必要なところまで接着剤が流れ込み易
い等の欠点があった。更に、溶接や拡散によって接合す
る方法も提案されているが、この方法は、温度によって
変形し易い、多量の熱エネルギーを必要とする。十分な
精度が得られない等の欠点があった。Conventional drum wheel inkjet recording devices use inkjet heads to eject ink droplets, but conventional infusier heads are constructed by adhering a nozzle plate to a head body. Therefore, the adhesive strength is weak, and the adhesive swells with the ink liquid and cannot maintain its strength over a long period of time. Further, there is a drawback that the adhesive tends to flow into the orifice (nozzle hole) and other unnecessary areas. Furthermore, methods of joining by welding or diffusion have also been proposed, but these methods require a large amount of thermal energy and are easily deformed by temperature. There were drawbacks such as not being able to obtain sufficient accuracy.
１−一部
本発明は、上述のごとき実情に鑑みてなされたもので、
接着、古着等を行なわないインクジェットヘッド、より
詳細には、ノズルプレートをヘッド本体にインサート成
形したインクジェットヘッド及びその製造方法を提供す
ることを目的としてなされたものである。1-Part of the present invention was made in view of the above-mentioned circumstances,
The object of this invention is to provide an inkjet head that does not require adhesion or old clothing, more specifically, an inkjet head in which a nozzle plate is insert-molded into a head body, and a method for manufacturing the same.
（−−一慮
本発明は、上記目的を達成するため、ノズルプレートの
一部に位置決め形状を有し、該位置決め形状を利用して
前記ノズルプレー１−を所定位置に保持して射出成形し
、前記ノズルプレートをヘッド本体内にインサート成形
すること、或いは、ノズルプレートがインサート成形さ
れ、かつ、成形時前記ノズルプレートを位置決めするた
めに用いた固定ピンのまわりに一体成形された支柱と、
前記支柱に固着された荷電電極とを有することを特徴と
したものである。以下１本発明の実施例に基づいて説明
する。(--In order to achieve the above object, the present invention has a positioning shape in a part of the nozzle plate, and utilizes the positioning shape to hold the nozzle plate 1- in a predetermined position and perform injection molding. , the nozzle plate is insert-molded within the head body, or the nozzle plate is insert-molded and a strut is integrally molded around a fixing pin used for positioning the nozzle plate during molding;
and a charging electrode fixed to the pillar. An explanation will be given below based on one embodiment of the present invention.
第１図は、本発明によるインクジェットヘッドの一実施
例を説明するための断面構成図で、図中、ｌはノズルプ
レートで、該ノズルプレート１には、第２図（ａ）、（
ｂ）に平面図にて示すようにオリフィス（ノズル孔）１
１、及び、ヘッド成形時。FIG. 1 is a cross-sectional configuration diagram for explaining one embodiment of an inkjet head according to the present invention.
As shown in the plan view in b), the orifice (nozzle hole) 1
1. And when forming the head.
該ノズルプレートを位置決めするために使用する切欠き
又は穴１２が設けられている。２はヘッド本体で、該ヘ
ッド本体２にはインク流路２１が形成されている。而し
て、本発明は、前述のごときノズルプレート１を射出成
形等によってヘッド本体２に一体的に成形するものであ
り、そのため、ノズルプレート１は、第２図に示したよ
うに、成形時、該ノズルプレートを所定の位置つまりイ
ンク流路２１の中心に正確に位置合わせして固定するた
めの切り欠き（（ｑ）図）、又は、穴（（ｂ）図）１２
を有し、これによって、ノズルプレートｌをヘッド本体
２内に一体的にインサート成形可能にしている。４はイ
ンク滴に電荷を与えるための荷電電極、２２は前述のご
とくして、ノズルプレートをインサート成形する時に同
時に形成される支柱で、前記荷電電極４は該支柱２２に
圧入されて固定される。支柱２２の中心部には円筒状の
孔３があるが、これはノズルプレートをヘッド本体にイ
ンサート成形する時に、前記ノズルプレートを所定位置
に位置決めしたピンを取り去った後にできた孔である。A notch or hole 12 is provided for use in positioning the nozzle plate. 2 is a head main body, and an ink flow path 21 is formed in the head main body 2. Therefore, in the present invention, the nozzle plate 1 as described above is integrally formed with the head body 2 by injection molding or the like, and therefore, the nozzle plate 1 is formed during molding as shown in FIG. , a notch (Fig. (q)) or a hole (Fig. (b)) 12 for accurately aligning and fixing the nozzle plate at a predetermined position, that is, the center of the ink flow path 21.
This allows the nozzle plate l to be integrally insert molded into the head body 2. Reference numeral 4 denotes a charging electrode for imparting an electric charge to ink droplets, and 22 is a support that is formed at the same time as the insert molding of the nozzle plate as described above, and the charging electrode 4 is press-fitted into the support support 22 and fixed. . There is a cylindrical hole 3 in the center of the column 22, which is formed after the pin that positioned the nozzle plate in a predetermined position is removed when the nozzle plate is insert-molded into the head body.
第３図は、前述のごときインクジェットヘットを射出成
形する一例を説明するための図で、図中、２０１は前記
ヘッド２を成形するための空洞部。FIG. 3 is a diagram for explaining an example of injection molding of the above-mentioned inkjet head, and in the figure, 201 is a cavity portion for molding the head 2.
２１０は前記インク流路２１を形成するための円柱状部
材、２２０は前記支柱２２を成形するための空洞部、３
１は前記ノズルプレー１−を前記空洞２０１内に位置決
めするため固定ピンで、成形時。210 is a cylindrical member for forming the ink flow path 21; 220 is a hollow portion for forming the support column 22;
1 is a fixing pin for positioning the nozzle plate 1- in the cavity 201 during molding.
該固定ピン３１及びノズルプレート１の位置決め用の切
り欠き又は孔１２にて該ノズルプレートを空洞２０１内
に位置決めし、周知のように、空洞内に成形材料を射出
してノズルプレート１をヘッド本体２内に一体形成する
。射出成形後、固定ピン３１を引き抜くと、支柱２２内
には孔が残るが。The nozzle plate is positioned within the cavity 201 using the fixing pin 31 and the positioning notch or hole 12 of the nozzle plate 1, and as is well known, a molding material is injected into the cavity to attach the nozzle plate 1 to the head body. It is integrally formed within 2. After injection molding, when the fixing pin 31 is pulled out, a hole remains in the support column 22.
第１図に示した孔３はこのようにしてできた孔を示して
いる。第１図に示した実施例においては。Hole 3 shown in FIG. 1 shows a hole made in this way. In the embodiment shown in FIG.
荷電電極４は、前述のようにして成形された支柱２２に
圧入されて固定されており、このようにすると、ヘッド
の組立て数が低減し、かつ、その寸法精度、取付精度が
安定して確保できるという点で有効であるが、単に、ノ
ズルプレートをヘッド本体内にインサート成形するだけ
ならば、第４図のように成形し、支柱２２を省略しても
よい。なお、ノズルプレートは必ずしも円形である必要
はなく、角形でもどのような形状でもかまわないが。The charging electrode 4 is press-fitted and fixed into the pillar 22 formed as described above. In this way, the number of head assemblies is reduced, and its dimensional accuracy and mounting accuracy are stably ensured. However, if the nozzle plate is simply insert molded into the head body, it may be molded as shown in FIG. 4 and the support column 22 may be omitted. Note that the nozzle plate does not necessarily have to be circular, and may be square or any other shape.
前述のごとき位置決め用の欠切き部又は穴があればよい
。因みに、金型は切欠き又は穴１２とピン３１が必要な
精度で滑合するようにつくられている。It is sufficient if there is a notch or hole for positioning as described above. Incidentally, the mold is made so that the notch or hole 12 and the pin 31 slide together with the required precision.
一助二−−星 以上の説明から明らかなように、本発明によると。Issuke 2--Star As is clear from the above description, according to the present invention.
（０）、接着、或いは接合等の工程が不要である。(0) No process such as adhesion or bonding is required.
（ｂ）、高精度が維持でき安定的に生産できる。(b) High precision can be maintained and stable production possible.
（ｃ）、工程が単純になるので、コスト面で有利である
。(c) Since the process is simple, it is advantageous in terms of cost.
等の利点がある。There are advantages such as
第１図は、本発明によるインクジェットヘッドの一実施
例を説明するための断面構成図、第２図（Ｑ）、（ｂ）
は、それぞれ本発明の実施に使用するノズルプレートの
例を示す平面図、第３図は、本発明によるインクジェッ
トヘッド製造方法の一例を示す断面構成図、第４図は１
本発明によるインクジエツトの他の実施例を示す断面構
成図である。
■・・・ノズルプレート、２・・・ヘッド本体、４・・
・荷ｆｆｉ？！！極、１１・・・ノズル孔、１２・・・
位置決め用の切り欠き又は穴、２１・・・インク流路、
２２・・・荷電電極支持柱。
特許出願人 株式会社 リコー
第 １ 図
第２図
（（］）FIG. 1 is a cross-sectional configuration diagram for explaining one embodiment of an inkjet head according to the present invention, and FIG. 2 (Q) and (b)
3 is a plan view showing an example of a nozzle plate used in carrying out the present invention, FIG. 3 is a sectional view showing an example of the inkjet head manufacturing method according to the present invention, and FIG.
FIG. 3 is a cross-sectional configuration diagram showing another embodiment of the inkjet according to the present invention. ■...Nozzle plate, 2...Head body, 4...
・Log ffi? ! ! Pole, 11... Nozzle hole, 12...
Notch or hole for positioning, 21... ink flow path,
22... Charged electrode support pillar. Patent applicant Ricoh Co., Ltd. Figure 1 Figure 2 (())
Claims (2)
該位置決め形状を利用して前記ノズルプレートを所定位
置に保持して射出成形し、前記ノズルプレートをヘッド
本体内にインサート成形することを特徴とするインクジ
ェットヘッドの製造方法。(1) A part of the nozzle plate has a positioning shape,
A method of manufacturing an inkjet head, characterized in that the nozzle plate is held in a predetermined position by injection molding using the positioning shape, and the nozzle plate is insert molded into a head main body.
成形時前記ノズルプレートを位置決めするために用いた
固定ピンのまわりに一体成形された支柱と、前記支柱に
固着された荷電電極とを有することを特徴とするインク
ジェットヘッド。(2) the nozzle plate is insert molded, and
An inkjet head characterized in that it has a pillar integrally molded around a fixing pin used for positioning the nozzle plate during molding, and a charging electrode fixed to the pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26797984A JPS61144360A (en) | 1984-12-19 | 1984-12-19 | Ink jet head and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26797984A JPS61144360A (en) | 1984-12-19 | 1984-12-19 | Ink jet head and its preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61144360A true JPS61144360A (en) | 1986-07-02 |
Family
ID=17452226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26797984A Pending JPS61144360A (en) | 1984-12-19 | 1984-12-19 | Ink jet head and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61144360A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0278559A (en) * | 1988-06-21 | 1990-03-19 | Canon Inc | Orifice plate for ink jet recording head, ink jet recording head using the same plate, and ink jet recorder using the same head |
| US5208604A (en) * | 1988-10-31 | 1993-05-04 | Canon Kabushiki Kaisha | Ink jet head and manufacturing method thereof, and ink jet apparatus with ink jet head |
| US5682187A (en) * | 1988-10-31 | 1997-10-28 | Canon Kabushiki Kaisha | Method for manufacturing an ink jet head having a treated surface, ink jet head made thereby, and ink jet apparatus having such head |
| US6079810A (en) * | 1993-01-22 | 2000-06-27 | Compaq Computer Corporation | Methods and apparatus for adhesively bonding an orifice plate to the internally chambered body portion of an ink jet print head assembly |
| JP2011218750A (en) * | 2010-04-14 | 2011-11-04 | Seiko Epson Corp | Positioning mechanism of liquid ejection head unit, liquid ejection head unit, liquid ejector, and method of manufacturing liquid ejection head unit |
-
1984
- 1984-12-19 JP JP26797984A patent/JPS61144360A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0278559A (en) * | 1988-06-21 | 1990-03-19 | Canon Inc | Orifice plate for ink jet recording head, ink jet recording head using the same plate, and ink jet recorder using the same head |
| US5208604A (en) * | 1988-10-31 | 1993-05-04 | Canon Kabushiki Kaisha | Ink jet head and manufacturing method thereof, and ink jet apparatus with ink jet head |
| US5682187A (en) * | 1988-10-31 | 1997-10-28 | Canon Kabushiki Kaisha | Method for manufacturing an ink jet head having a treated surface, ink jet head made thereby, and ink jet apparatus having such head |
| US6079810A (en) * | 1993-01-22 | 2000-06-27 | Compaq Computer Corporation | Methods and apparatus for adhesively bonding an orifice plate to the internally chambered body portion of an ink jet print head assembly |
| JP2011218750A (en) * | 2010-04-14 | 2011-11-04 | Seiko Epson Corp | Positioning mechanism of liquid ejection head unit, liquid ejection head unit, liquid ejector, and method of manufacturing liquid ejection head unit |
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