JPH0435070B2 - - Google Patents
Info
- Publication number
- JPH0435070B2 JPH0435070B2 JP59171491A JP17149184A JPH0435070B2 JP H0435070 B2 JPH0435070 B2 JP H0435070B2 JP 59171491 A JP59171491 A JP 59171491A JP 17149184 A JP17149184 A JP 17149184A JP H0435070 B2 JPH0435070 B2 JP H0435070B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- needle
- recording
- toner
- recording member
- 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 - Lifetime
Links
- 239000000758 substrate Substances 0.000 claims description 8
- 239000005300 metallic glass Substances 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001017 Alperm Inorganic materials 0.000 description 1
- 229910017082 Fe-Si Inorganic materials 0.000 description 1
- 229910017133 Fe—Si Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 229910002796 Si–Al Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000007740 vapor deposition 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
- B41J2/385—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)
Description
（技術分野）
本発明は、電子グラフイツク記録用の電極及び
その製造方法に関するものである。
（従来技術）
電子グラフイツク記録方式は、例えば米国特許
第3816840号等に開示されており、第１図はその
基本原理を示したものである。第１図において、
１はその表面に絶縁性の記録部材２を設けた背面
電極、３は針状電極で、例えば紙面に対して垂直
方向に複数本配列されている。４は永久磁石、５
は磁気吸引性を有しかつ導電性を有するトナーで
ある。トナー５は、永久磁石４の磁気力によりは
針状電極３の先端と背面電極１との間に保持され
る。いま、この状態において、針状電極３に信号
電圧を印加すると、絶縁性記録部材２を介して充
電される形となり、一部のトナーが帯電する。即
ちそのトナーは静電力によつて背面電極１側に引
き付けられる。このトナーに作用する静電的な力
FEが磁気的な力FMより大きければトナーは針状
電極３を離れて記録部材２上に保持される。この
ようにして記録部材２上にトナー像が形成される
ものである。
ところで、針状電極３は、導電性を有しかつ高
透磁率で、しかも適度の飽和磁化特性を持つてい
ることが必要である。それに適する材料として
は、パーマロイ（Fe−Ni合金）、アルパーム
（Fe−Al合金）、センダスト（Fe−Si−Al合金）、
ケイ素鋼（Fe−Si）があげられる。また、本記
録方式においては、実用的な面から電極の密度を
１mm当り８〜16本程度にし、従つて電極径として
は60〜30μmの大きさにする必要がある。そこで
針状電極の作製方法としては、上記材料をひきぬ
きにより細線化したりあるいは圧延により薄帯化
して、ガラス、セラミツク等の絶縁性基板上に、
細線の場合は平行かつ等間隔に張り付け、薄帯の
場合は基板上に貼着した後エツチング等の加工に
より平行かつ等間隔の電極を形成する方法が採ら
れている。また、上記材料を真空蒸着あるいはス
パツタリングにより基板上に膜を形成し、これを
エツチング加工して電極を形成する方法もある。
しかしながら、材料を細線化あるいは薄帯化す
るにはかなり多くのひきぬき回数あるいは圧延回
数が必要であり、また工程も複雑である。さらに
細線の場合は、平行に並べて張り付ける作業が大
変で、製造コストが高くつく。また、蒸着やスパ
ツタリングで30〜60μmの膜を形成する場合を考
えると、材料がパーマロイのような合金の場合、
真空蒸着では組成の変化が考えられ、スパツタリ
ングでは膜の成長速度の点で効率的でない。
（発明の目的）
本発明は、上記従来の種々の問題点を解消する
ためになされたもので、引き抜き加工による細線
化や圧延による薄帯化等の複雑な工程と多大の時
間、労力を要することなく、しかも優れた特性を
有する電子グラフイツク記録用電極を提供するこ
とを目的とする。
（発明の構成）
上記目的を達成するために、本発明は、表面に
記録部材を有する第１の電極と磁気発生源を有す
る針状の第２の電極とを、その第２の電極の先端
が記録部材に所定の間隔を介して対向するように
配置し、磁性及び導電性を有するトナーを用いて
記録部材上にトナー像を形成する電子グラフイツ
ク記録装置において、針状の第２の電極は、厚さ
20〜50μmの薄帯で得られた高透磁率アモルフア
スメタルを絶縁性基板の一主面に貼着し、所要の
針状パターンにエツチング加工してなることを特
徴とするものである。以下、実施例を詳細に説明
する。
（実施例）
針状電極としては、永久磁石からの磁束を効率
よく通すために高透磁率でなければならない。ま
たトナーが外部からの影響なしに電極間に保持さ
れるために高い飽和磁束密度をもつ必要がある。
表は、上記の所要特性を有する材料としてセンダ
スト、方向性ケイ素鋼、及び本発明によるアモル
フアスメタルの一例としてFe80−B20（公知）を
あげ、その最大透磁率μmax、飽和磁束密度Bsを
比較したものである。
(Technical Field) The present invention relates to an electrode for electronic graphic recording and a method for manufacturing the same. (Prior Art) An electronic graphic recording system is disclosed in, for example, US Pat. No. 3,816,840, and FIG. 1 shows its basic principle. In Figure 1,
Reference numeral 1 designates a back electrode having an insulating recording member 2 provided on its surface, and 3 designates a plurality of needle-shaped electrodes arranged in a direction perpendicular to the plane of the paper. 4 is a permanent magnet, 5
is a toner that has magnetic attraction and conductivity. The toner 5 is held between the tip of the needle electrode 3 and the back electrode 1 by the magnetic force of the permanent magnet 4 . Now, in this state, when a signal voltage is applied to the needle-like electrode 3, the toner is charged via the insulating recording member 2, and a part of the toner is charged. That is, the toner is attracted to the back electrode 1 side by electrostatic force. Electrostatic force acting on this toner
If F E is larger than the magnetic force F M , the toner leaves the acicular electrode 3 and is retained on the recording member 2 . In this way, a toner image is formed on the recording member 2. By the way, the needle electrode 3 needs to have conductivity, high magnetic permeability, and appropriate saturation magnetization characteristics. Suitable materials include Permalloy (Fe-Ni alloy), Alperm (Fe-Al alloy), Sendust (Fe-Si-Al alloy),
Silicon steel (Fe-Si) is an example. Further, in this recording method, from a practical standpoint, the electrode density must be approximately 8 to 16 per mm, and the electrode diameter must therefore be 60 to 30 μm. Therefore, the method for producing needle-shaped electrodes is to make the above-mentioned material into thin wires by punching or rolling it into a thin strip, and then place it on an insulating substrate such as glass or ceramic.
In the case of thin wires, the electrodes are pasted in parallel and at equal intervals, and in the case of thin strips, the electrodes are pasted on a substrate and then etched or otherwise processed to form electrodes in parallel and at equal intervals. Another method is to form a film of the above material on a substrate by vacuum evaporation or sputtering, and then etching the film to form an electrode. However, in order to make the material into thin wires or thin strips, a considerably large number of punching or rolling operations are required, and the process is also complicated. Furthermore, in the case of thin wires, it is difficult to line them up in parallel and stick them together, which increases manufacturing costs. Also, considering the case of forming a 30 to 60 μm film by vapor deposition or sputtering, if the material is an alloy such as permalloy,
Vacuum deposition may cause compositional changes, and sputtering is not efficient in terms of film growth rate. (Objective of the Invention) The present invention has been made to solve the various problems of the above-mentioned conventional methods, and requires complicated processes such as thinning by drawing and forming into thin strips by rolling, and a great deal of time and labor. The object of the present invention is to provide an electrode for electrographic recording which has excellent characteristics without causing any problems. (Structure of the Invention) In order to achieve the above object, the present invention provides a first electrode having a recording member on its surface and a needle-shaped second electrode having a magnetic generation source. In an electronic graphic recording device which forms a toner image on the recording member using magnetic and conductive toner, the needle-shaped second electrode is arranged to face the recording member at a predetermined distance. ,thickness
It is characterized in that a high magnetic permeability amorphous metal obtained in the form of a thin ribbon of 20 to 50 μm is adhered to one main surface of an insulating substrate and etched into a desired needle-like pattern. Examples will be described in detail below. (Example) The needle-shaped electrode must have high magnetic permeability in order to efficiently pass the magnetic flux from the permanent magnet. In addition, it is necessary to have a high saturation magnetic flux density so that the toner can be held between the electrodes without external influences.
The table lists Sendust, grain-oriented silicon steel, and Fe80-B20 (known) as an example of the amorphous metal according to the present invention as materials having the above-mentioned required characteristics, and compares their maximum magnetic permeability μmax and saturation magnetic flux density Bs. It is something.
【表】
この表から明らかなように、アモルフアスメタ
ル（Fe80−B20）はμmax、Bs共に高く、針状電
極の材料として最適であることがわかる。
また、アモルフアスメタルは、その製作法から
20〜50μmの厚さの薄帯で得られることが特徴的
である。即ち、このようなアモルフアスメタル
は、アモルフアス磁性材料の原料となる物質を高
温で溶融し、この溶融液体を高速度で回転する冷
却ロールに当てて急速に冷却固化する、いわゆる
液体急冷却法により容易に得られるものである。
従つてこのような薄帯を用いると圧延の必要が全
くなく、絶縁基板にそのまま貼着すればよい。こ
の点、従来の圧延を必要とするものに比較して極
めて有利である。以下、針状電極の製造方法を説
明する。
第２図は、本発明の記録用電極の製造方法の一
実施例を示したもので、７はガラス、セラミツク
等の絶縁性基板であり、まずその基板７上に、第
２図ａに示したようにアモルフアスメタル箔８を
貼着する。次に、フオトエツチングにより、第２
図ｂのように所定の幅の針状電極８′を形成し、
次いでその各電極の両先端部を露出した状態で、
他の部分を絶縁材９で被覆する。
以上のように、簡単な工程により針状電極を作
製することができ、また必要な精度も十分出すこ
とができる。アモルフアスメタルは、前述の優れ
た特性の外、通常の金属材料に比べて硬度が高い
ことも特徴的であり、トナーと常に接触する電極
にとつてこれもまた有利な点である。
（発明の効果）
以上説明したように、本発明によれば、電子グ
ラフイツク記録用の電極として最適の材料が使用
され、しかも簡単な工程により精度よく製造する
ことができ、高性能の針状電極を低価格で提供す
ることができる。[Table] As is clear from this table, amorphous amorphous metal (Fe80-B20) has high μmax and Bs, making it ideal as a material for needle-shaped electrodes. In addition, amorphous asmetal is produced due to its manufacturing method.
It is characteristic that it can be obtained as a ribbon with a thickness of 20 to 50 μm. In other words, such amorphous amorphous metal is produced by the so-called liquid rapid cooling method, in which the raw material of the amorphous amorphous magnetic material is melted at high temperature, and the molten liquid is applied to cooling rolls rotating at high speed to rapidly cool and solidify. It is easily obtained.
Therefore, when such a thin strip is used, there is no need for rolling at all, and it can be simply attached to the insulating substrate. In this respect, it is extremely advantageous compared to conventional methods that require rolling. The method for manufacturing the needle electrode will be described below. FIG. 2 shows an embodiment of the method for manufacturing recording electrodes of the present invention. Reference numeral 7 is an insulating substrate made of glass, ceramic, etc. Attach the amorphous asmetal foil 8 as described above. Next, the second
Form a needle-like electrode 8' with a predetermined width as shown in Figure b,
Next, with both tips of each electrode exposed,
The other parts are covered with an insulating material 9. As described above, a needle-like electrode can be manufactured through a simple process, and the necessary precision can be achieved sufficiently. In addition to the above-mentioned excellent properties, amorphous metal is also characterized by higher hardness than ordinary metal materials, which is also advantageous for electrodes that are in constant contact with toner. (Effects of the Invention) As explained above, according to the present invention, an optimal material is used as an electrode for electronic graphic recording, and it can be manufactured with high precision through a simple process, resulting in a high-performance needle-like electrode. can be provided at a low price.
第１図は、電子グラフイツク記録方法の基本原
理を示す図、第２図は、本発明の一実施例の製造
方法を示す図である。
１……背面電極、２……記録部材、３……針状
電極、４……永久磁石、５……トナー、７……絶
縁性基板、９……絶縁材。
FIG. 1 is a diagram showing the basic principle of an electronic graphic recording method, and FIG. 2 is a diagram showing a manufacturing method according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Back electrode, 2...Recording member, 3...Acicular electrode, 4...Permanent magnet, 5...Toner, 7...Insulating substrate, 9...Insulating material.
Claims (1)
生源を有する針状の第２の電極とを、その第２の
電極の先端が前記記録部材に所定の間隙を介して
対向するように配置し、磁性及び導電性を有する
トナーを用いて前記記録部材上にトナー像を形成
する電子グラフイツク記録装置において、 前記針状の第２の電極は、厚さ20〜50μmの薄
帯で得られた高透磁率アモルフアスメタルを絶縁
性基板の一主面に貼着し、所要の針状パターンに
エツチング加工してなることを特徴とする電子グ
ラフイツク記録用電極。[Scope of Claims] 1. A first electrode having a recording member on its surface and a needle-shaped second electrode having a magnetic generation source, the tip of the second electrode being connected to the recording member with a predetermined gap therebetween. In an electronic graphic recording device that forms a toner image on the recording member using magnetic and conductive toner, the second electrode has a thickness of 20 to 50 μm. An electrode for recording electronic graphics, characterized in that a high permeability amorphous metal obtained in the form of a thin ribbon is adhered to one main surface of an insulating substrate and etched into a desired needle-like pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17149184A JPS6150177A (en) | 1984-08-20 | 1984-08-20 | Electrode for electrographic recording and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17149184A JPS6150177A (en) | 1984-08-20 | 1984-08-20 | Electrode for electrographic recording and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6150177A JPS6150177A (en) | 1986-03-12 |
| JPH0435070B2 true JPH0435070B2 (en) | 1992-06-09 |
Family
ID=15924076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17149184A Granted JPS6150177A (en) | 1984-08-20 | 1984-08-20 | Electrode for electrographic recording and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6150177A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3816840A (en) * | 1973-04-20 | 1974-06-11 | Minnesota Mining & Mfg | Electrographic recording process and apparatus using conductive toner subject to a capacitive force |
| JPS54127324A (en) * | 1978-03-25 | 1979-10-03 | Konishiroku Photo Ind Co Ltd | Electrostatic recorder |
| JPS55150116A (en) * | 1979-05-14 | 1980-11-21 | Fujitsu Ltd | Magnetic head |
-
1984
- 1984-08-20 JP JP17149184A patent/JPS6150177A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3816840A (en) * | 1973-04-20 | 1974-06-11 | Minnesota Mining & Mfg | Electrographic recording process and apparatus using conductive toner subject to a capacitive force |
| JPS54127324A (en) * | 1978-03-25 | 1979-10-03 | Konishiroku Photo Ind Co Ltd | Electrostatic recorder |
| JPS55150116A (en) * | 1979-05-14 | 1980-11-21 | Fujitsu Ltd | Magnetic head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6150177A (en) | 1986-03-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |