JPS61120757A - Ink jet recorder - Google Patents
Ink jet recorderInfo
- Publication number
- JPS61120757A JPS61120757A JP24188784A JP24188784A JPS61120757A JP S61120757 A JPS61120757 A JP S61120757A JP 24188784 A JP24188784 A JP 24188784A JP 24188784 A JP24188784 A JP 24188784A JP S61120757 A JPS61120757 A JP S61120757A
- Authority
- JP
- Japan
- Prior art keywords
- recording paper
- recording
- ink jet
- assumed
- dot position
- 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
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
- B41J2/07—Ink jet characterised by jet control
Abstract
Description
【発明の詳細な説明】
夜帆公互
本発明は、多値偏向方式の荷電制御型インクジェット記
録装置における記録紙保持体の曲率設定に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to setting the curvature of a recording paper holder in a charge control type inkjet recording apparatus using a multi-level deflection method.
炙未皮帆
第５図は、従来の荷電制御型インクジェット記録装置の
ヘッドと記録紙との位置関係を示す図で、図中、１はノ
ズル、２は荷電電極、３は偏向電極、４はガター、５は
記録紙、６はインク柱、７はインク滴、８は記録紙保持
体で、周知のように、ノズル１から噴射されるインク柱
６は、切断されてインク滴７となる。この切断タイミン
グで印字に使用するインク滴が荷電電極により荷電され
１次に偏向電極３で偏向され、記録紙５に到達する。Figure 5 shows the positional relationship between the head and recording paper of a conventional charge-controlled inkjet recording device. In the figure, 1 is a nozzle, 2 is a charging electrode, 3 is a deflection electrode, and 4 is a deflection electrode. A gutter, 5 is a recording paper, 6 is an ink column, 7 is an ink droplet, and 8 is a recording paper holder.As is well known, the ink column 6 ejected from the nozzle 1 is cut to become an ink droplet 7. At this cutting timing, ink droplets used for printing are charged by the charging electrode, firstly deflected by the deflection electrode 3, and reach the recording paper 5.
また、非荷電部は直進し、ガター４によって回収される
。Further, the uncharged portion moves straight and is collected by the gutter 4.
而して、上述のごときインクジェット記録装置において
は、従来は、記録面が、インク滴に対向して凸面である
ため、インク噴射角の変動があった場合には、記録紙に
おけるドツト位置が大きくずれてしまうこととなる。Conventionally, in the above-mentioned inkjet recording apparatus, the recording surface is a convex surface facing the ink droplets, so when there is a change in the ink jet angle, the dot position on the recording paper is greatly affected. This will result in misalignment.
目 的
本発明は、上述のごとき実情に鑑みてなされたもので、
多値偏向の荷電制御型インクジェット記録装置において
、ドツト位置精度を向上させて印字歪を小さくし、白す
し、黒すじの減少を図ることを目的としてなされたもの
である。Purpose The present invention was made in view of the above-mentioned circumstances.
This was done for the purpose of improving dot position accuracy, reducing printing distortion, and reducing white streaks and black streaks in a charge control type inkjet recording device with multilevel deflection.
構 成
本発明は、前記目的を達成するために、記録紙の記録面
が、インクジェットに対向して凹面となるように記録紙
保持体の曲率を設定したことを特徴とするものである。Structure In order to achieve the above object, the present invention is characterized in that the curvature of the recording paper holder is set so that the recording surface of the recording paper is a concave surface facing the inkjet.
以下、本発明の実施例に基づいて説明する。Hereinafter, the present invention will be explained based on examples.
第１図は１本発明によるインクジェット記録装置を示す
図で、図中、第５図と同一番号は同一内容を示している
が、第１図における記録紙保持体８は、インクジェット
７に対向して、記録面側が凹面となっている点が第５図
のものと異なっている。この記録面の相違による従来例
と本発明の比較を第２図により説明する。FIG. 1 is a diagram showing an inkjet recording apparatus according to the present invention. In the figure, the same numbers as in FIG. 5 indicate the same contents, but the recording paper holder 8 in FIG. The difference from the one shown in FIG. 5 is that the recording surface side is a concave surface. A comparison between the conventional example and the present invention due to the difference in recording surface will be explained with reference to FIG.
第２図において、１０は第５図に示すような従来方式の
記録紙、１１は本発明の記録紙であり、記録紙の保持体
の半径をそれぞれｒとする。今、正常な状態のインク滴
の飛翔軌跡がＯ−Ａの線であるとし、また、ポンプの脈
動、インク噴射角の変動等が起こった時のインク滴の飛
翔軌跡がＯ−Ａ′とする。また、その時の変動角をΔθ
とすると、記録紙におけるドツト位置のずれは、従来方
式と本発明の場合でそれぞれΔＸ２．ΔＸ１で与ベ
えられる、第２図のモデルで、−例としてｒ＝３
０閣、Δθ＝ｉ、ｓ”としたときのΔＸ２／ΔＸ１とθ
との比を第３図に示す、同図から、θが大きくなるにつ
れてΔＸ２／ΔＸ１が大きくなることがわか゛る。すな
わち、従来の方式では、高偏向段になるほど、インク噴
射方向、ポンプ脈動等の僅かの変化がドツト位置を大き
く狂わせることになり、一方、本発明では、ドツト位置
ずれは従来のものに比して小さく、常に一定となる。し
たがって、本発明は、印字歪を小さく押えることができ
、また、印字品質を低下させる白すし、黒すじ等の問題
に対しても有効である。In FIG. 2, numeral 10 is a conventional recording paper as shown in FIG. 5, and numeral 11 is a recording paper of the present invention, and the radius of the recording paper holder is r. Assume now that the flight trajectory of the ink droplet under normal conditions is the line O-A, and the flight trajectory of the ink droplet when pump pulsation, fluctuations in the ink jet angle, etc. occur is O-A'. . Also, the fluctuation angle at that time is Δθ
Then, the deviation of the dot position on the recording paper is ΔX2. in the conventional method and the present invention, respectively. Given by ΔX1
In the model of Figure 2, - for example, r = 3.
ΔX2/ΔX1 and θ when Δθ=i,s”
The ratio between ΔX2 and ΔX1 is shown in FIG. 3. It can be seen from the figure that ΔX2/ΔX1 increases as θ increases. In other words, in the conventional system, the higher the deflection stage, the more slight changes in the ink jet direction, pump pulsation, etc. will cause the dot position to become more misaligned.On the other hand, in the present invention, the dot position deviation is more is small and always constant. Therefore, the present invention can suppress printing distortion to a small level, and is also effective against problems such as white streaks and black streaks that degrade print quality.
次に、第１図の記録紙保持体８の例を第４図に示す。同
図（Ａ）は斜視図、（Ｂ）は横断面図、（Ｃ）はインク
噴射方向から見た図で１図中、２０は上側の偏向電極、
２１は下側の偏向電極、２２はインク滴の通る短形の穴
をあけた記録紙保持体、２３は記録紙、２４は紙送りロ
ーラであり、偏向電極から出たインク滴は、記録紙保持
体の外側に巻かれた紙へ、記録紙保持体にあけられた穴
を通って到達する。そして１行の印字が終わると紙送り
ローラにより紙送りされる。Next, an example of the recording paper holder 8 shown in FIG. 1 is shown in FIG. (A) is a perspective view, (B) is a cross-sectional view, and (C) is a view seen from the ink jetting direction. In the figure, 20 is an upper deflection electrode,
21 is the lower deflection electrode, 22 is a recording paper holder with a rectangular hole through which the ink droplets pass, 23 is the recording paper, and 24 is a paper feed roller. It reaches the paper wound on the outside of the holder through a hole drilled in the recording paper holder. When one line of printing is completed, the paper is fed by a paper feed roller.
勿−ｍ＝１
以上の説明から明らかなように、本発明によれば、荷電
制御型インクジェット記録装置、特に、多値偏向方式の
インクジェット記録装置において、印字歪、すじ等が低
減可能となり、良い画像品質を得ることができる。Of course - m = 1 As is clear from the above description, according to the present invention, it is possible to reduce printing distortion, streaks, etc. in a charge control type inkjet recording device, especially a multi-level deflection type inkjet recording device. Image quality can be obtained.
第１図は、本発明によるインクジェット記録装置の構成
を示す図、第２図は、本発明と従来のインクジェット記
録装置の比較を示す図、第３図は、本発明と従来のイン
クジェット記録装置のドツト位置ずれの比を示すグラフ
、第４図は、本発明による記録紙保持体の構造を示す図
、第５図は、従来のインクジェット記録装置の構成を示
す図である。
１・・・ノズル、２・・・荷電電極、３，２０．２１・
・・偏向電極、４・・・ガター、５，２３・・・記録紙
、６・・・インク柱、７・・・インク滴、８，２２・・
・記録紙保持体、２４・・・紙送りローラ。
第１図
第３図
ＴＨＥＴＡ（’ＤＥＧ）ｅ
−り
第４図
（ＡンFIG. 1 is a diagram showing the configuration of an inkjet recording device according to the present invention, FIG. 2 is a diagram showing a comparison between the present invention and a conventional inkjet recording device, and FIG. 3 is a diagram showing a comparison between the present invention and a conventional inkjet recording device. FIG. 4 is a graph showing the ratio of dot position deviations, FIG. 4 is a diagram showing the structure of a recording paper holder according to the present invention, and FIG. 5 is a diagram showing the structure of a conventional inkjet recording apparatus. 1... Nozzle, 2... Charged electrode, 3, 20.21.
... Deflection electrode, 4... Gutter, 5, 23... Recording paper, 6... Ink column, 7... Ink droplet, 8, 22...
- Recording paper holder, 24... paper feed roller. Figure 1 Figure 3 THETA('DEG) e-ri Figure 4 (A
Claims (1)
るように記録紙保持体の曲率を設定したことを特徴とす
るインクジェット記録装置。An inkjet recording apparatus characterized in that the curvature of the recording paper holder is set so that the recording surface of the recording paper is a concave surface facing the inkjet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24188784A JPS61120757A (en) | 1984-11-16 | 1984-11-16 | Ink jet recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24188784A JPS61120757A (en) | 1984-11-16 | 1984-11-16 | Ink jet recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61120757A true JPS61120757A (en) | 1986-06-07 |
Family
ID=17081023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24188784A Pending JPS61120757A (en) | 1984-11-16 | 1984-11-16 | Ink jet recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61120757A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531156A2 (en) * | 1991-09-06 | 1993-03-10 | Linx Printing Technologies Plc | Ink jet printer |
-
1984
- 1984-11-16 JP JP24188784A patent/JPS61120757A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531156A2 (en) * | 1991-09-06 | 1993-03-10 | Linx Printing Technologies Plc | Ink jet printer |
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