JPS61118266A - Multi-needle electrode head - Google Patents
Multi-needle electrode headInfo
- Publication number
- JPS61118266A JPS61118266A JP23860584A JP23860584A JPS61118266A JP S61118266 A JPS61118266 A JP S61118266A JP 23860584 A JP23860584 A JP 23860584A JP 23860584 A JP23860584 A JP 23860584A JP S61118266 A JPS61118266 A JP S61118266A
- Authority
- JP
- Japan
- Prior art keywords
- needle electrode
- head
- recording medium
- spacer
- electrode head
- 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
- B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
- B41J2/39—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material using multi-stylus heads
- B41J2/395—Structure of multi-stylus heads
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は静電記録装置に於る多針電極ヘッドの改良に関
する。特に、ヘッド面に堆積し易い現像剤の影響が排除
できる多針電極ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a multi-needle electrode head in an electrostatic recording device. In particular, the present invention relates to a multi-needle electrode head that can eliminate the influence of developer that tends to accumulate on the head surface.
従来公知の静電記録用多針電極ヘッドの断面図を第６図
に示す。A cross-sectional view of a conventionally known multi-needle electrode head for electrostatic recording is shown in FIG.
この種の多針電極ヘッド１０は、−走査線の画素数に相
当する多数本の？イヤーを図面の垂直方向に沿って一列
に並べた多針電極１と、この多針電極１を中間にしてそ
の両側（図面の左右側）に配列した制御電極２とからな
り、また、これら電極前面を進行する記録媒体５（例え
ば誘電体ベルト、ドラム）との間に、高電圧下で空中放
電を生じさせるための放電空隙６を形成するスペーサ４
が前記制御電極２面を覆うように設けられている。This type of multi-needle electrode head 10 has a large number of electrodes corresponding to the number of pixels of a scanning line. It consists of a multi-needle electrode 1 with ears arranged in a row along the vertical direction of the drawing, and control electrodes 2 arranged on both sides (left and right sides of the drawing) with this multi-needle electrode 1 in the middle. A spacer 4 that forms a discharge gap 6 for generating an air discharge under high voltage between a recording medium 5 (for example, a dielectric belt or a drum) advancing on the front side.
is provided so as to cover the two surfaces of the control electrode.
第４図は、この多針電極ヘッド１０を用いた転写型静電
記録装置の構成の概要を示す図で、帯電器１１により外
表面が一杯帯電されて一方向（図中、矢印で示す方向）
に回転する誘電体ベルト１２は、信号電圧を印加された
多針電極ヘッド１０によりその被帯電部に潜像が形成さ
れる。この潜像は現像器１３により可視化され、転写コ
ロトロン１４によって転写媒体１５に転写される。一方
、像転写を行った誘電体ベルト１２はクリーナ１６によ
りその表面の残留現像剤（トナー）が取り除かれて次の
プロセスに供される。FIG. 4 is a diagram showing an outline of the configuration of a transfer type electrostatic recording device using this multi-needle electrode head 10, in which the outer surface is fully charged by the charger 11 in one direction (in the direction indicated by the arrow in the figure). )
A latent image is formed on the charged portion of the dielectric belt 12 which rotates by the multi-needle electrode head 10 to which a signal voltage is applied. This latent image is visualized by a developer 13 and transferred onto a transfer medium 15 by a transfer corotron 14. On the other hand, the dielectric belt 12 on which the image has been transferred is subjected to the next process after residual developer (toner) is removed from its surface by a cleaner 16.
しかしながら、前記クリーナ１６は残留トナーを完全に
除去することが難しいため、装置の繰り返しの使用によ
り前記多針電極ヘッド１０に設けた空隙３にトナーが堆
積して放電不良を起こし、印字品質が劣化された。However, since it is difficult for the cleaner 16 to completely remove residual toner, repeated use of the device causes toner to accumulate in the gaps 3 provided in the multi-needle electrode head 10, causing discharge defects and deteriorating print quality. It was done.
本発明の目的は、上述した従来技術に於る欠点を解消し
、トナーによる影響を排除して放電不良を生じない静電
記録用多針電極ヘッドを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a multi-needle electrode head for electrostatic recording that eliminates the drawbacks of the prior art described above, eliminates the influence of toner, and does not cause discharge defects.
〔問題点を解決するだめの手段・作用〕本発明の上記目
的は、ピン電極列からなる多針電極及びこの多針電極の
両側に配列した制御電極を有し、かつ前記両電極を覆う
よ５に設けたスペーサの前記多針電極と対応する位置に
放電空隙を形成し、前記両電極間の放電によって電極前
面を移動する記録媒体に静電潜像を形成する多針電極ヘ
ッドに於て、記録媒体の進行方向に対して後方側の前記
スペーサに前記放電空隙に平行または傾斜した溝を設け
た多針電極ヘッドにより達成される。[Means and effects for solving the problem] The above object of the present invention is to provide a multi-needle electrode consisting of a row of pin electrodes and a control electrode arranged on both sides of the multi-needle electrode, and to cover both of the electrodes. In the multi-needle electrode head, a discharge gap is formed at a position corresponding to the multi-needle electrode of the spacer provided in 5, and an electrostatic latent image is formed on a recording medium moving on the front surface of the electrode by discharge between the two electrodes. This is achieved by a multi-needle electrode head in which a groove parallel to or inclined to the discharge gap is provided in the spacer on the rear side with respect to the traveling direction of the recording medium.
本発明による多針電極ヘッドの具体例をその放電空隙が
形成されるプロセスに基づいて説明する。A specific example of the multi-needle electrode head according to the present invention will be explained based on the process by which the discharge gap is formed.
なお、この放電空隙を形成するプロセスは例えば、本出
願人によって既に提案された多針電極の空隙保持用スペ
ーサ形成方法（特開昭５８−５９８６１号公報）によっ
て行うことが出来るので、本実施例もこの方法に基づい
て多針電極ヘッドを形成する。Note that the process of forming this discharge gap can be performed, for example, by the method of forming a spacer for maintaining a gap in a multi-needle electrode (Japanese Unexamined Patent Publication No. 58-59861), which has already been proposed by the present applicant. A multi-needle electrode head is also formed based on this method.
第１図は本発明の一実施例を説明する図である。FIG. 1 is a diagram illustrating an embodiment of the present invention.
なお、第１図に於て、先の第３図で説明した従来例と同
じ構成要素については同一符号を用いて説明を省略する
。Note that, in FIG. 1, the same components as those of the conventional example explained in FIG.
第１図の多針電極ヘラＦ２０は多針電極１及び制御電極
２が埋設された電極面上にスペーサ材４が全面コートさ
れた後、多針電極ヘッド２０の長手方向に沿って移動す
るように設けた治具の研磨手段（図示せず）により、多
針電極１に対応した部分を研磨し多針電極ヘッドの長手
方向全面に亘つた所定幅の放電空隙６が形成される。The multi-needle electrode spatula F20 shown in FIG. 1 moves along the longitudinal direction of the multi-needle electrode head 20 after the spacer material 4 is entirely coated on the electrode surface in which the multi-needle electrode 1 and the control electrode 2 are embedded. A portion corresponding to the multi-needle electrode 1 is polished by a polishing means (not shown) of a jig provided at , and a discharge gap 6 of a predetermined width is formed over the entire longitudinal direction of the multi-needle electrode head.
本発明の多針電極ヘッド２０は更に、ヘッド面上の記録
媒体５が移動（図中、矢印方向）する側の後方側スペー
サ面に、前記放電空隙６と平行な溝２１がこの空隙と同
様手段により形成される。The multi-needle electrode head 20 of the present invention further has a groove 21 parallel to the discharge gap 6 on the rear spacer surface on the side where the recording medium 5 moves (in the direction of the arrow in the figure) on the head surface. formed by means.
なお、スペーサ材４としては従来と同様にテフロン系塗
料等を用いることが出来る。Note that as the spacer material 4, Teflon paint or the like can be used as in the conventional case.
また、前記放電空隙３及び溝２１の他の形成方法は、夫
々所定箇所を極巾テープ（例えばＱ、 ４ ｍｍ幅）で
マスキングした後、スヘーサ材ヲスフレコーティングし
て乾燥後、前記テープを取り除いて設けることも出来る
。Another method for forming the discharge gap 3 and the groove 21 is to mask predetermined portions of each with a very wide tape (for example, Q, 4 mm width), coat the spacer material with a soufflé coating, dry it, and then remove the tape. It can also be provided.
これら倒れかの方法により、移動する記録媒体５にとっ
て放電空隙３より手前側に形成された溝２１を形成１゛
ることにより、この溝２１の中にヘッド前面を移動する
記録媒体５上のクリーニング後に於てもなお記録媒体上
に残存するトナーが堆積されて、放電空隙６へのトナー
の進入を防止する。従って、装置の経時使用によっても
残留トナーによる放電不良を生じない。By forming grooves 21 on the front side of the discharge gap 3 for the moving recording medium 5 using these tilting methods, cleaning on the recording medium 5 that moves the front surface of the head into the grooves 21. The toner still remaining on the recording medium is subsequently deposited and prevents toner from entering the discharge gap 6. Therefore, even if the device is used over time, discharge defects due to residual toner will not occur.
次に、第２図は本発明の別の実施例を図示したもので、
先の第１図の実施例で示した溝に該当する溝Ｈａｔが放
電空隙６に対し傾斜して設けられている。この様に傾斜
した溝２１ａを形成することにより、堆積されたトナー
が一方向に押し流されるため、溝２１ａが堆積トナーで
満杯にならないでこの溝２１ａの機能が常に損われない
で作用できると云う特徴を有する。Next, FIG. 2 illustrates another embodiment of the present invention,
A groove Hat corresponding to the groove shown in the embodiment shown in FIG. 1 is provided at an angle with respect to the discharge gap 6. By forming the inclined groove 21a in this manner, the accumulated toner is swept away in one direction, so that the groove 21a does not become full of accumulated toner, and the function of the groove 21a is always able to function without being impaired. Has characteristics.
また、別の実施態様としては、第１図及び第２図に示し
た溝２１．２１ａを夫々複数本設けることにより一層効
果を高めることが出来る。Moreover, as another embodiment, the effect can be further enhanced by providing a plurality of grooves 21, 21a shown in FIGS. 1 and 2, respectively.
以上記載したとおり、本発明の静電記録用多針電極ヘッ
ドによれば、クリーニング後に記録媒体上に残留して進
入して来るトナーを堆積させる溝がヘッド面に設けられ
ているので、このようなトナーが放電空隙に堆積するこ
とが防止され、従って放電不良を生じさせることなく常
時安定した印字品質が保障できると云う優れ１こ効果を
有する。As described above, according to the multi-needle electrode head for electrostatic recording of the present invention, grooves are provided on the head surface to deposit toner that remains on the recording medium and enters the recording medium after cleaning. This method has one advantageous effect: it prevents toner from accumulating in the discharge gap, and therefore guarantees stable printing quality at all times without causing discharge defects.
第１図は本発明の一実施例を説明する静電記録用多針電
極ヘッドの斜視図、第２図は本発明の他の実施例を示す
多針電極ヘッドの斜視図、第３図は従来の多針電極ヘッ
ドを説明する断面図、第４図は静電記録用多針電極ヘッ
ドを用いた転写型静電記録装置の構成の概要を説明する
図である。
図中符号：
１・・・多針電極、 ２・・・制御電極、３・・・
放電空隙、 ４・・・スペーサ材、５・・・記録媒
体、 ２０・・・多針電極ヘッド。
第 ３ 図
第 ４ しFIG. 1 is a perspective view of a multi-needle electrode head for electrostatic recording to explain one embodiment of the present invention, FIG. 2 is a perspective view of a multi-needle electrode head showing another embodiment of the present invention, and FIG. FIG. 4 is a cross-sectional view illustrating a conventional multi-needle electrode head, and is a diagram illustrating the outline of the configuration of a transfer type electrostatic recording device using a multi-needle electrode head for electrostatic recording. Symbols in the figure: 1...Multi-needle electrode, 2...Control electrode, 3...
Discharge gap, 4... Spacer material, 5... Recording medium, 20... Multi-needle electrode head. Figure 3 Figure 4
Claims (1)
配列した制御電極とを有し、かつ前記両電極を覆うよう
に設けたスペーサの前記多針電極と対応する位置に放電
空隙を形成し、前記両電極間の放電によって電極前面を
移動する記録媒体に静電潜像を形成する多針電極ヘッド
に於て、記録媒体の進行方向に対して後方側の前記スペ
ーサに前記放電空隙に平行または傾斜した溝を設けたこ
とを特徴とする多針電極ヘッド。A discharge gap is formed at a position corresponding to the multi-needle electrode of a spacer that has a multi-needle electrode consisting of a pin electrode array and control electrodes arranged on both sides of the multi-needle electrode, and is provided to cover both electrodes. In a multi-needle electrode head that forms an electrostatic latent image on a recording medium moving on the front surface of the electrodes by discharge between the two electrodes, the spacer on the rear side with respect to the traveling direction of the recording medium is provided in the discharge gap. A multi-needle electrode head characterized by having parallel or inclined grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23860584A JPS61118266A (en) | 1984-11-14 | 1984-11-14 | Multi-needle electrode head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23860584A JPS61118266A (en) | 1984-11-14 | 1984-11-14 | Multi-needle electrode head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61118266A true JPS61118266A (en) | 1986-06-05 |
Family
ID=17032662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23860584A Pending JPS61118266A (en) | 1984-11-14 | 1984-11-14 | Multi-needle electrode head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61118266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0943968A1 (en) * | 1996-12-05 | 1999-09-22 | Nippon Steel Corporation | Electrostatic recording device and image density control method therefor |
-
1984
- 1984-11-14 JP JP23860584A patent/JPS61118266A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0943968A1 (en) * | 1996-12-05 | 1999-09-22 | Nippon Steel Corporation | Electrostatic recording device and image density control method therefor |
| US6509918B1 (en) | 1996-12-05 | 2003-01-21 | Nippon Steel Corporation | Electrostatic recording apparatus and image density control method thereof |
| EP0943968A4 (en) * | 1996-12-05 | 2003-03-05 | Nippon Steel Corp | Electrostatic recording device and image density control method therefor |
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