JPH03140261A - Electrostatic multi-needle electrode matrix head - Google Patents
Electrostatic multi-needle electrode matrix headInfo
- Publication number
- JPH03140261A JPH03140261A JP27886089A JP27886089A JPH03140261A JP H03140261 A JPH03140261 A JP H03140261A JP 27886089 A JP27886089 A JP 27886089A JP 27886089 A JP27886089 A JP 27886089A JP H03140261 A JPH03140261 A JP H03140261A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- needle electrode
- electrode
- head
- auxiliary
- 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
- 239000011159 matrix material Substances 0.000 title claims abstract description 33
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 12
- 230000005684 electric field Effects 0.000 abstract description 9
- 239000011347 resin Substances 0.000 abstract description 7
- 229920005989 resin Polymers 0.000 abstract description 7
- 239000000843 powder Substances 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 101100491149 Caenorhabditis elegans lem-3 gene Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- LFVLUOAHQIVABZ-UHFFFAOYSA-N Iodofenphos Chemical compound COP(=S)(OC)OC1=CC(Cl)=C(I)C=C1Cl LFVLUOAHQIVABZ-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業−にの利用分野
本発明は高画質を有する静電多針電極マトリクスヘッド
に関する。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an electrostatic multi-needle electrode matrix head with high image quality.
従来の技術
従来、一般に静電多針電極マトリクスヘッドを用いて記
録媒体上に潜像形成を行なう場合、正常な潜像ドツト直
径に対して面積比で約１０倍も大きい直径の異常な潜像
ドツトが発生し、画質上の問題点となっていた。これを
解決するため、特開昭５４−１２８３３９号公報には、
上記静電多針電極マトリクスヘッドと記録媒体との間の
潜像形成に必要な空隙部電界を設定する方式が開示され
ているが、上記異常な潜像ドツトを低減する有利な潜像
形成方法がなかった。Conventional technology Conventionally, when a latent image is formed on a recording medium using an electrostatic multi-needle electrode matrix head, an abnormal latent image is formed whose diameter is about 10 times larger in area ratio than the normal latent image dot diameter. Dots were generated, which caused problems in image quality. In order to solve this problem, Japanese Patent Application Laid-open No. 54-128339
A method for setting the electric field in the gap necessary for forming a latent image between the electrostatic multi-needle electrode matrix head and the recording medium is disclosed, and an advantageous latent image forming method for reducing the above-mentioned abnormal latent image dots is disclosed. There was no.
発明が解決しようとする課題
本発明は上記従来の課題を、静電多針電極７トリクスヘ
ツドの構成に着目し、静電多針電極マトリクスヘッドと
記録媒体間に発生する異常な空隙部電界が形成される潜
像形成条件を排除し、高画質の静電多針電極７トリクス
ヘツドを提供することを目的とする。Problems to be Solved by the Invention The present invention solves the above-mentioned conventional problems by focusing on the structure of the electrostatic multi-needle electrode 7 trix head, and solves the problem of the formation of an abnormal electric field in the gap between the electrostatic multi-needle electrode matrix head and the recording medium. The purpose of the present invention is to provide an electrostatic multi-needle electrode 7-trix head with high image quality by eliminating the latent image forming conditions.
課題を解決するための手段
本発明は、絶縁被覆を有する針電極線材をマトリクス結
線して整列した多針電極列と、この多針電極列と同一平
面上に多針電極の配列に対応して分割して少なくとも記
録媒体の走行方向の上流側に位置するように低抵抗体か
らなる補助電極を配置した補助電極列とを備えているこ
とを特徴とするものである。Means for Solving the Problems The present invention provides a multi-needle electrode array in which needle electrode wires each having an insulating coating are connected in a matrix, and a multi-needle electrode array is arranged on the same plane as the multi-needle electrode array. The recording medium is characterized by comprising an auxiliary electrode array in which auxiliary electrodes made of a low-resistance material are arranged so as to be divided and positioned at least on the upstream side in the running direction of the recording medium.
作 用
本発明の上記構成によれば、低抵抗体からなる補助電極
列を記録媒体の走行方向上流側に配置したことにより、
静電多針電極マトリクスヘッドと記録媒体間に異常な空
隙部層界が形成されない潜像形成条件を設定でき、高画
質の静電多針電極マトリクスヘッドを提供できる。Function According to the above configuration of the present invention, the auxiliary electrode array made of a low resistance material is arranged on the upstream side in the running direction of the recording medium, so that
It is possible to set latent image forming conditions in which no abnormal gap layer boundary is formed between the electrostatic multi-needle electrode matrix head and the recording medium, and it is possible to provide an electrostatic multi-needle electrode matrix head with high image quality.
実 施 例
以下、本発明の一実施例を図面を参照して詳細に説明す
る。静電多針電極マトリクスヘッド１は、第２図に示す
ように回路構成されており、また高精度の多針電極２を
できるだけ回路を簡単にして電子的に効率よく分配する
方法として補助電極７を利用している。補助電極７は多
針電極２と同一平面上に配置され、多針電極２の配列に
対応して分割されている。また多針電極２も補助電極７
に対応して第２図のようにグループ化されてマトリクス
結合されている。各電極を駆動するドライバー回路の概
要は第３図に示すように、それぞれ補助電極７のグルー
プＡと２つの多針電極２のグループＢ、Ｃの各群ごとに
Ｍ個１ｍ個１ｍ個のドライバー回路が用意されている。Embodiment Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. The electrostatic multi-needle electrode matrix head 1 has a circuit configuration as shown in FIG. is used. The auxiliary electrode 7 is arranged on the same plane as the multi-needle electrode 2, and is divided according to the arrangement of the multi-needle electrode 2. In addition, the multi-needle electrode 2 is also the auxiliary electrode 7.
They are grouped and matrix-combined as shown in FIG. The outline of the driver circuit for driving each electrode is shown in Fig. 3.M drivers of 1m and 1m are installed for each group of group A of auxiliary electrodes 7 and groups B and C of two multi-needle electrodes 2, respectively. A circuit is provided.
記録はＢまたはＣのｍビットのシフトレジスターに画像
信号を一時記憶させて同時にゲートしてマイナス３５０
ｖ程度の電圧を多針電極２にパルス的に印加し、その期
間に補助電極７にも同時に逆極性の電圧を加え、選択さ
れた部分のみに記録が行われる。For recording, the image signal is temporarily stored in an m-bit shift register of B or C and gated at the same time to minus 350.
A voltage of approximately V is applied in a pulse manner to the multi-needle electrode 2, and during this period, a voltage of opposite polarity is simultaneously applied to the auxiliary electrode 7, so that recording is performed only on the selected portion.
次に前記静電多針電極マトリクスヘッド１の構成につい
て述べる。第４図は多針電極２の実体配線図である。Next, the structure of the electrostatic multineedle electrode matrix head 1 will be described. FIG. 4 is an actual wiring diagram of the multi-needle electrode 2.
絶縁被膜をほどこした銅線の針状電極用線材３は所定の
本数だけ並列に規則正しく固着整列され、実際に静電記
録を行なう部分４とマトリクス配線をグループ化して行
なう部分５とに分かれている。部分５において針状電極
用線材３の配列群は１個のブロックに分ｍｌされており
、各ブロックはそれぞれｎ本の針状電極用線材３から成
っている。また各ブロック毎に特定の針状電極用線材３
が選択され、所定の接続端子板６に電気的に接続されて
いる。A predetermined number of acicular electrode wires 3 made of copper wires coated with an insulating coating are regularly fixed and aligned in parallel, and are divided into a part 4 where electrostatic recording is actually performed and a part 5 where matrix wiring is grouped and performed. . In the portion 5, the arrangement group of the needle-like electrode wires 3 is divided into one block, and each block is made up of n needle-like electrode wires 3. In addition, each block has a specific needle electrode wire material 3.
is selected and electrically connected to a predetermined connection terminal board 6.
第１図に示すように、静電多針電極マトリクスヘッド１
は、上記多針電極２に補助電極７を所定の位置合わせし
絶縁樹脂８で一体化して構成されている。補助電極７は
ポリプロピレン樹脂にカーボンを１０％重量部分散して
得られた導電性樹脂で構成されており、本実施例の場合
１００Ω・口の抵抗値を有し、図示しない所定の接続端
子板に電気的に接続されている。As shown in FIG. 1, an electrostatic multi-needle electrode matrix head 1
is constructed by aligning an auxiliary electrode 7 with the multi-needle electrode 2 at a predetermined position and integrating the multi-needle electrode 2 with an insulating resin 8. The auxiliary electrode 7 is made of a conductive resin obtained by dispersing 10% by weight of carbon in polypropylene resin, has a resistance value of 100Ω in this embodiment, and is connected to a predetermined connection terminal plate (not shown). electrically connected to.
第５図は本発明の静電多針電極マトリクスヘッドを用い
て記録媒体９に画像形成を行う状態を説明するものであ
る。FIG. 5 illustrates a state in which an image is formed on the recording medium 9 using the electrostatic multi-needle electrode matrix head of the present invention.
第５図において、記録媒体９は矢印Ａ方向に移動して静
電多針電極マトリクスヘッド１により潜像形成を行い画
像器１１で顕像化し、定着器１２に定着される。第１図
にも示したように静電多針電極マトリクスヘッド１にお
いて、多針電極２と同一平面内で両側に補助電極７が２
列配置されており、両側２列の補助電極７にパルス電圧
を印加し、記録媒体９の導電層に容量結合により電位を
作用させ、多針電極での直下において必要な補助電極７
による電位を得て静電多針電極マトリクスヘッド１と記
録媒体９間の空隙電界を設定している。本実施例では補
助電極７を電極性樹脂で構成したので、記録媒体９か静
電多針電極マトリックスへラド１の記録面上を移動する
際の摩擦に際しても、摩擦による補助電極７の金属粉が
発生せず、またこの金属粉が多針電極２上に搬送されな
いために、静電多針電極マトリクスへツド１と記録媒体
９間に異常な空隙電界が発生せず、異常な潜像ドツトが
発生しなかった。また記録媒体９の走行方向の上流側に
位置する補助電極７のみを導電性樹脂で構成し、他方を
金属性としても上記と同様の結果を得た。In FIG. 5, the recording medium 9 moves in the direction of arrow A, forms a latent image with the electrostatic multi-needle electrode matrix head 1, visualizes it with the image device 11, and fixes it with the fixing device 12. As shown in FIG. 1, in the electrostatic multi-needle electrode matrix head 1, there are two auxiliary electrodes 7 on both sides in the same plane as the multi-needle electrode 2.
A pulse voltage is applied to two rows of auxiliary electrodes 7 on both sides, a potential is applied to the conductive layer of the recording medium 9 by capacitive coupling, and necessary auxiliary electrodes 7 are arranged directly below the multi-needle electrode.
A gap electric field between the electrostatic multi-needle electrode matrix head 1 and the recording medium 9 is set by obtaining a potential. In this embodiment, since the auxiliary electrode 7 is made of an electrode resin, the metal powder on the auxiliary electrode 7 due to friction when moving on the recording surface of the RAD 1 to the recording medium 9 or the electrostatic multi-needle electrode matrix is removed. Since this metal powder is not transported onto the multi-needle electrode 2, no abnormal gap electric field is generated between the electrostatic multi-needle electrode matrix electrode 1 and the recording medium 9, and no abnormal latent image dots are generated. did not occur. Furthermore, the same results as above were obtained when only the auxiliary electrode 7 located on the upstream side in the running direction of the recording medium 9 was made of conductive resin and the other one was made of metal.
以上のように上記実施例によれば、静電多針電極マトリ
クスヘッドにおいて多針電極２と同一平面内で両側に配
置した導電性樹脂からなる補助電極７により静電多針電
極マトリクスヘッド１として記録媒体９間に異常な空隙
電界が発生する金属粉の発生をなくすることができ、異
常な潜像ドット直径のない高画質の静電多針電極マトリ
クスヘッド１ができる。As described above, according to the above embodiment, in the electrostatic multi-needle electrode matrix head, the auxiliary electrodes 7 made of conductive resin arranged on both sides in the same plane as the multi-needle electrode 2 function as the electrostatic multi-needle electrode matrix head 1. It is possible to eliminate the generation of metal powder that would cause an abnormal gap electric field between the recording media 9, and it is possible to obtain a high-quality electrostatic multi-needle electrode matrix head 1 without abnormal latent image dot diameters.
発明の効果
以上のように本発明による静電多針電極マトリクスヘッ
ドの構成は、従来の静電多針電極マトリクスヘッドと記
録媒体間に発生する異常な空隙電界を排除でき、高画質
の静電多針電極マトリクスヘッドを提供でき、その工業
的価値は大なるものがある。Effects of the Invention As described above, the structure of the electrostatic multi-needle electrode matrix head according to the present invention can eliminate the abnormal gap electric field that occurs between the conventional electrostatic multi-needle electrode matrix head and the recording medium, and can produce high-quality electrostatic images. A multi-needle electrode matrix head can be provided, and its industrial value is great.
第１図は静電多針電極マトリクスヘッドの概略構成を示
す斜視図、第２図は静電多針電極マトリクスヘッドの配
線図、第３図は同走査回路図、第４図は多針電極の実体
配線図、第５図は静電多針電極マトリクスヘッドを用い
た画像形成装置の概略構成図である。
１・・・・・・静電多針電極マトリクスヘッド、２・・
・・・・多針電極、７・・・・・・補助電極。Fig. 1 is a perspective view showing the schematic configuration of the electrostatic multi-needle electrode matrix head, Fig. 2 is a wiring diagram of the electrostatic multi-needle electrode matrix head, Fig. 3 is a scanning circuit diagram of the same, and Fig. 4 is a multi-needle electrode matrix head. FIG. 5 is a schematic configuration diagram of an image forming apparatus using an electrostatic multi-needle electrode matrix head. 1... Electrostatic multi-needle electrode matrix head, 2...
...Multi-needle electrode, 7...Auxiliary electrode.
Claims (1)
した多針電極列と、この多針電極列と同一平面上に、多
針電極の配列に対応して分割して少なくとも記録媒体の
走行方向の上流側に位置するように低抵抗対からなる補
助電極を配置した補助電極列とを備えている静電多針電
極マトリクスヘッド。A multi-needle electrode array in which needle electrode wires having an insulating coating are connected in a matrix and arranged, and on the same plane as this multi-needle electrode array, the electrodes are divided corresponding to the array of the multi-needle electrodes and arranged at least in the running direction of the recording medium. An electrostatic multi-needle electrode matrix head comprising an auxiliary electrode row in which auxiliary electrodes consisting of low resistance pairs are arranged on the upstream side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27886089A JPH03140261A (en) | 1989-10-25 | 1989-10-25 | Electrostatic multi-needle electrode matrix head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27886089A JPH03140261A (en) | 1989-10-25 | 1989-10-25 | Electrostatic multi-needle electrode matrix head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03140261A true JPH03140261A (en) | 1991-06-14 |
Family
ID=17603143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27886089A Pending JPH03140261A (en) | 1989-10-25 | 1989-10-25 | Electrostatic multi-needle electrode matrix head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03140261A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011002527A (en) * | 2009-06-17 | 2011-01-06 | Oki Data Corp | Image forming apparatus |
-
1989
- 1989-10-25 JP JP27886089A patent/JPH03140261A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011002527A (en) * | 2009-06-17 | 2011-01-06 | Oki Data Corp | Image forming apparatus |
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