JPS6135953B2 - - Google Patents
Info
- Publication number
- JPS6135953B2 JPS6135953B2 JP7219480A JP7219480A JPS6135953B2 JP S6135953 B2 JPS6135953 B2 JP S6135953B2 JP 7219480 A JP7219480 A JP 7219480A JP 7219480 A JP7219480 A JP 7219480A JP S6135953 B2 JPS6135953 B2 JP S6135953B2
- Authority
- JP
- Japan
- Prior art keywords
- ink
- electrode
- insulating layer
- recording
- port
- 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.)
- Expired
Links
- 239000004020 conductor Substances 0.000 claims description 17
- 238000007641 inkjet printing Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 6
- 230000005684 electric field Effects 0.000 description 5
- 238000001454 recorded image Methods 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005507 spraying Methods 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
- B41J2/015—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
- B41J2/015—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
- B41J2002/061—Ejection by electric field of ink or of toner particles contained in ink
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Description
【発明の詳細な説明】
本発明は、インクジエツト記録法に於いて使用
するインク記録用ヘツドに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ink recording head used in an inkjet recording method.
フアクシミリ装置等に於いては、従来より静電
記録法、感熱記録法、放電破壊記録法、電子写真
法等の種々の記録方法が提案され、実用化されて
いるが、何れも特殊な記録紙を使用する為、コス
ト、記録機構の複雑さ、記録の寿命等に問題があ
る。この為、最近では普通紙への直接記録が可能
なインクジエツト記録法が注目されている。イン
クジエツト記録法は、インクが供給されているノ
ズルから、このノズルの先端と一定の間隔を保ち
ながらノズルの先端に対して相対的に移動する記
録媒体の表面へ、電界によつて加速したインクを
噴射して記録を行なうもので、低コスト、無騒
音、記録の長寿命等の種々の利点を有する。しか
し、この記録方法は、主、副走査により記録を行
なうものであるから、記録速度の高速化が困難で
あつた。 For facsimile devices, various recording methods such as electrostatic recording, thermal recording, discharge breakdown recording, and electrophotography have been proposed and put into practical use, but all of them require special recording paper. There are problems with cost, complexity of the recording mechanism, and recording life. For this reason, the inkjet recording method, which allows direct recording on plain paper, has recently attracted attention. The inkjet recording method uses an electric field to accelerate ink from a nozzle that is supplied with ink to the surface of a recording medium that moves relative to the nozzle tip while maintaining a constant distance from the nozzle tip. It performs recording by spraying, and has various advantages such as low cost, no noise, and long recording life. However, since this recording method performs recording by main and sub-scanning, it has been difficult to increase the recording speed.
そこで、特願昭54−78094号により、内壁に多
数の電極が配置されているインク噴出口にインク
を保持し、画信号に基づいて選択した電極に高電
圧を印加し、この時に生じる前記選択電極とイン
ク噴出口外部に設けた電極との間の静電気力で、
インク噴出口に保持されているインクを引出して
記録を行なうインク記録用ヘツドを用いることに
より、電子平面走査を可能にし、記録速度の高速
化を図れるようにした記録方式が提案されてい
る。 Therefore, in accordance with Japanese Patent Application No. 54-78094, ink is held in an ink ejection port in which a large number of electrodes are arranged on the inner wall, and a high voltage is applied to selected electrodes based on an image signal, and the selection that occurs at this time is carried out. Due to the electrostatic force between the electrode and the electrode provided outside the ink jet port,
A recording method has been proposed that uses an ink recording head that performs recording by drawing out ink held in an ink jet orifice to enable electronic plane scanning and increase the recording speed.
第１図は、この電子平面走査を可能にしたイン
ク記録用ヘツドの構成斜視図であり、１はスリツ
ト状に形成されたインク噴出口、２ａ，２ｂは前
記インク噴出口１を形成する上板および下板、３
は前記下板２ｂ上に周期的に多数配置された電
極、４は前記インク噴出口１に対向して配置され
た接地導体、５は前記接地導体４に沿つて移動す
る記録紙、６は駆動電源である。尚、電極３と駆
動電源６とはそれぞれ１対１に対応しているもの
であり、駆動電源６は加えられた画信号が黒を示
すものである時、電極３に高電圧を印加するもの
である。 FIG. 1 is a perspective view of the configuration of an ink recording head that enables this electronic plane scanning, in which 1 is an ink jetting port formed in a slit shape, and 2a and 2b are upper plates forming the ink jetting port 1. and lower plate, 3
4 is a ground conductor arranged opposite to the ink jet port 1; 5 is a recording paper that moves along the ground conductor 4; and 6 is a drive. It is a power source. Note that the electrodes 3 and the driving power source 6 are in one-to-one correspondence, and the driving power source 6 applies a high voltage to the electrode 3 when the applied image signal indicates black. It is.
電極３には、前述したように、駆動電源６から
画信号に基づいて高電圧が印加され、その高電圧
が印加された電極３付近のインク（図示せず）
は、インク噴出口１から噴出し、接地電極４との
間の電界により加速されて記録紙５に付着するも
のであるから、記録紙５上に、画信号に基づいた
記録が行なわれる。このように、１ライン分の記
録を、記録紙５、インク記録用ヘツドを移動せず
に行なうことができるので、記録速度の高速化が
可能となる。尚、この場合、接地導体４にインク
の通過口を設けることにより、インク噴出口１と
記録紙５の中間に接地導体４を配置することも可
能である。又、接地導体４の電位は必ずしも接地
電位である必要は無く、インクの噴出に必要な電
界が形成可能な範囲であれば任意に設定できるこ
とは勿論である。 As described above, a high voltage is applied to the electrode 3 from the drive power source 6 based on the image signal, and ink (not shown) near the electrode 3 to which the high voltage is applied is applied.
Since the ink is ejected from the ink ejection port 1, accelerated by the electric field between it and the ground electrode 4, and attached to the recording paper 5, recording is performed on the recording paper 5 based on the image signal. In this way, recording for one line can be performed without moving the recording paper 5 and the ink recording head, making it possible to increase the recording speed. In this case, it is also possible to arrange the ground conductor 4 between the ink ejection port 1 and the recording paper 5 by providing the ground conductor 4 with an ink passage port. Further, the potential of the ground conductor 4 does not necessarily have to be the ground potential, and can of course be set arbitrarily as long as it is possible to form an electric field necessary for ejecting ink.
ところで、インク噴出口１から噴出されるイン
クの量はインクの電荷量に依存し、又インクの電
荷量は各電極３と接地間の静電容量、即ち、各電
極３とその周囲に配置されている装置の構成部品
との間の静電容量に依存するものであるから、各
電極３と接地間の静電容量が均一であることが望
ましい。しかし、各電極３と接地との間の静電容
量は、接地導体に相当する構成部品が複雑に配置
されているので、一般には不均一であり、インク
の噴出特性が各電極３で異なるものとなるので、
記録画質が低下する欠点があつた。 By the way, the amount of ink ejected from the ink ejection port 1 depends on the amount of electric charge of the ink, and the amount of electric charge of the ink depends on the electrostatic capacitance between each electrode 3 and the ground, that is, each electrode 3 and its surroundings. It is desirable that the capacitance between each electrode 3 and the ground is uniform because it depends on the capacitance between the components of the device. However, the capacitance between each electrode 3 and the ground is generally non-uniform because the components corresponding to the ground conductor are arranged in a complicated manner, and the ink ejection characteristics may differ for each electrode 3. Therefore,
The problem was that the recorded image quality deteriorated.
本発明は前述の如き欠点を改善したものであ
り、その目的は、各電極と接地間の静電容量を均
一にし、記録画質を向上させることにある。以下
実施例について詳細に説明する。 The present invention has improved the above-mentioned drawbacks, and its purpose is to equalize the capacitance between each electrode and the ground, thereby improving the quality of recorded images. Examples will be described in detail below.
第２図は本発明の一実施例の断面図であり、２
a′は接地導体７、絶縁層８から成るインク噴出口
１の上板であり、他の第１図と同一符号は同一部
分を示している。 FIG. 2 is a sectional view of one embodiment of the present invention, and FIG.
A' is the upper plate of the ink jetting port 1, which is composed of a ground conductor 7 and an insulating layer 8, and the same reference numerals as in the other FIG. 1 indicate the same parts.
本実施例は、インク噴出口１の上板２a′を接地
導体７、絶縁層８とにより構成したものであるか
ら、各電極３と接地間の静電容量は、絶縁層８の
厚さを均一に、且つ各電極３と接地導体７との間
隔を均一にすることにより、均一にすることがで
きる。従つて、各電極３に於けるインクの噴出特
性のばらつきを小さくして、記録画質を向上させ
ることができる。又、このことは実験により確認
した。 In this embodiment, the upper plate 2a' of the ink jet nozzle 1 is composed of a ground conductor 7 and an insulating layer 8. Therefore, the capacitance between each electrode 3 and the ground is determined by the thickness of the insulating layer 8. It can be made uniform by making the distance between each electrode 3 and the ground conductor 7 uniform. Therefore, it is possible to reduce variations in the ink ejection characteristics of each electrode 3 and improve the quality of recorded images. Moreover, this was confirmed by experiment.
尚、電極３に高電圧を印加したとき、接地導体
７との間にも電界が形成されるが、インク噴出口
１に対向して配置した接地電極４との間の電界が
大きくなるように構成すれば良いことになり、例
えば、インク噴出口１の近傍の接地導体７の一部
を除去することもできる。 Note that when a high voltage is applied to the electrode 3, an electric field is also formed between the electrode 3 and the ground conductor 7, but the electric field between the electrode 3 and the ground electrode 4 disposed opposite the ink ejection port 1 is increased. For example, a part of the ground conductor 7 near the ink ejection port 1 can be removed.
第３図は本発明の他の実施例の断面図であり、
２b′は接地導体９、絶縁層１０から成るインク噴
出口１の下板であり、他の第１図と同一符号は同
一部分を表わしている。 FIG. 3 is a sectional view of another embodiment of the present invention,
Reference numeral 2b' is a lower plate of the ink jetting port 1, which is made up of a ground conductor 9 and an insulating layer 10, and the same reference numerals as in the other parts of FIG. 1 represent the same parts.
本実施例は、下板２b′を接地導体９と絶縁層１
０とにより構成したものであるから、各電極３と
接地間の静電容量は、絶縁層１０の厚さを均一に
することにより、均一にすることができ、従つ
て、前述したと同様に、各電極３に於けるインク
の噴出特性のばらつきを少ないものとし、記録画
質を向上させることができる。又、このことも実
験により確認した。 In this embodiment, the lower plate 2b' is connected to the ground conductor 9 and the insulating layer 1.
0, the capacitance between each electrode 3 and the ground can be made uniform by making the thickness of the insulating layer 10 uniform. , it is possible to reduce variations in the ink ejection characteristics in each electrode 3 and improve the quality of recorded images. This was also confirmed through experiments.
又、インク噴出口１の上板、下板の両方を、接
地導体表面に絶縁処理を施した板状部材を用いて
構成した場合も、前述したと同様な効果が得られ
ることを確認した。 It has also been confirmed that the same effect as described above can be obtained when both the upper and lower plates of the ink ejection port 1 are constructed using plate-like members whose ground conductor surfaces are insulated.
以上説明したように、本発明は、インク噴出口
を形成する上板或いは下板の何れか一方を第１の
絶縁層と接地導体とからなる二層構造の板状部材
を前記第１の絶縁層が前記インク噴出口の内壁と
なるように配置することにより構成し、他方を第
２の絶縁層を有する板状部材を該第２の絶縁層が
前記インク噴出口の内壁となるように配置するこ
とにより構成し、前記複数の選択電極を前記上板
或いは下板の何れか一方の内壁側に等間隔で配置
したものであるから、各電極と接地管の静電容量
を均一にすることができ、従つて、各電極に於け
るインクの噴出特性を一定にし、記録画質を向上
させることができる利点がある。 As explained above, in the present invention, either the upper plate or the lower plate forming the ink ejection ports is replaced with a plate member having a two-layer structure consisting of a first insulating layer and a ground conductor. A plate-shaped member having a second insulating layer is arranged so that the second insulating layer forms an inner wall of the ink ejecting port, and the second insulating layer forms an inner wall of the ink ejecting port. Since the plurality of selective electrodes are arranged at equal intervals on the inner wall side of either the upper plate or the lower plate, the capacitance of each electrode and the grounding tube can be made uniform. Therefore, there is an advantage that the ink ejection characteristics at each electrode can be made constant and the quality of recorded images can be improved.
第１図は従来例の構成斜視図、第２図、第３図
はそれぞれ異なる本発明の実施例の断面図であ
る。
１はインク噴出口、２ａ，２a′は上板、２ｂ，
２b′は下板、３は電極、４，７，９は接地導体、
５は記録紙、６は駆動電源、８，１０は絶縁層で
ある。
FIG. 1 is a perspective view of the configuration of a conventional example, and FIGS. 2 and 3 are sectional views of different embodiments of the present invention. 1 is an ink jet port, 2a, 2a' is an upper plate, 2b,
2b' is the lower plate, 3 is the electrode, 4, 7, 9 are the ground conductors,
5 is a recording paper, 6 is a driving power source, and 8 and 10 are insulating layers.
Claims (1)
と共にインクが保持されるスリツト状のインク噴
出口と、 該インク噴出口に対向配置された電極とを具備
し、 該電極と前記複数の選択電極の内の任意の選択
電極との間に高電圧が印加されることにより、前
記インクを噴出するインク記録用ヘツドに於い
て、 前記インク噴出口を形成する上板或いは下板の
何れか一方を第１の絶縁層と接地導体とからなる
二層構造の板状部材を前記第１の絶縁層が前記イ
ンク噴出口の内壁となるように配置することによ
り構成し、他方を第２の絶縁層を有する板状部材
を該第２の絶縁層が前記インク噴出口の内壁とな
るように配置することにより構成し、前記複数の
選択電極を前記上板或いは下板の何れか一方の内
壁側に等間隔で配置したことを特徴とするインク
記録用ヘツド。[Scope of Claims] 1. A slit-shaped ink jetting port in which a plurality of selection electrodes are arranged at equal intervals on an inner wall and holding ink, and an electrode arranged opposite to the ink jetting port, In the ink recording head that ejects the ink by applying a high voltage between the electrode and any selected electrode of the plurality of selected electrodes, the upper plate forming the ink ejection port or Either one of the lower plates is configured by arranging a two-layered plate-like member consisting of a first insulating layer and a ground conductor such that the first insulating layer becomes an inner wall of the ink jetting port, The other is configured by arranging a plate-like member having a second insulating layer such that the second insulating layer becomes an inner wall of the ink jetting port, and the plurality of selection electrodes are arranged on the upper plate or the lower plate. An ink recording head characterized in that the heads are arranged at equal intervals on either one of the inner walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7219480A JPS56167472A (en) | 1980-05-30 | 1980-05-30 | Ink recording head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7219480A JPS56167472A (en) | 1980-05-30 | 1980-05-30 | Ink recording head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56167472A JPS56167472A (en) | 1981-12-23 |
| JPS6135953B2 true JPS6135953B2 (en) | 1986-08-15 |
Family
ID=13482158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7219480A Granted JPS56167472A (en) | 1980-05-30 | 1980-05-30 | Ink recording head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56167472A (en) |
-
1980
- 1980-05-30 JP JP7219480A patent/JPS56167472A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56167472A (en) | 1981-12-23 |
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