JPH0450190B2 - - Google Patents
Info
- Publication number
- JPH0450190B2 JPH0450190B2 JP21097782A JP21097782A JPH0450190B2 JP H0450190 B2 JPH0450190 B2 JP H0450190B2 JP 21097782 A JP21097782 A JP 21097782A JP 21097782 A JP21097782 A JP 21097782A JP H0450190 B2 JPH0450190 B2 JP H0450190B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic ink
- magnetic
- ink
- stylus
- printer
- 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
- 238000010438 heat treatment Methods 0.000 claims description 12
- 241001422033 Thestylus Species 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 4
- 150000005690 diesters Chemical class 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 2
- 239000005642 Oleic acid Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 2
- 239000011553 magnetic fluid Substances 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- LYKJEJVAXSGWAJ-UHFFFAOYSA-N compactone Natural products CC1(C)CCCC2(C)C1CC(=O)C3(O)CC(C)(CCC23)C=C LYKJEJVAXSGWAJ-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000000080 wetting agent Substances 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
Landscapes
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Dot-Matrix Printers And Others (AREA)
Description
【発明の詳細な説明】
本発明は磁気インクを使用し普通紙に直接記録
できるプリンタに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printer that can directly record on plain paper using magnetic ink.
OA機器が普及し、その用途が多様化すること
によつて情報出力端末としてのプリンタにも、高
精細・高速であること、低価格であり、ランニン
グリコストが安いこと、またメンテが容易なこと
が要求されている。以上の要求を満たす記録方式
として、インクジエツト記録方式、熱転写記録方
式、通電転写記録方式等があり、各所で開発研
究、商品化が勧められている。しかし各方式共
に、一長一短があり、商品化に際して解決すべき
問題がある。インクジエツトは信頼性、特にノズ
ルの目詰まりに問題があり、熱転写においては感
熱ヘツドの立ち下り時間がかかり、現行では、く
り返し周期２ｍsec／dot程度が限界であること、
また熱転写、通電転写共にインクシートが比較的
コスト高につくこと、解像度に問題があること
が、商品の普及化の障害になつている。このう
ち、インクジエツト方式の欠点がある目詰まりを
なくしたものとして、ノズルレスのマグネトフイ
ルドグラフイー方式がある。（昭和55年度画像電
子学会第８回全国大会予稿10）この方式は磁化し
たスタイラス先端に磁気インクを供給させ、メニ
スカスを形成させ、静電引力のスイツチングによ
りインクを飛翔させるものであるが、信号電圧が
数百ボルトと高いため、IC駆動は不可能である。
このため、ヘツドの実装が複雑となり、安価でコ
ンパクトなものをつくることは難しい。 With the spread of office automation equipment and the diversification of its uses, printers as information output terminals also require high definition, high speed, low price, low running cost, and easy maintenance. That is required. As recording methods that meet the above requirements, there are inkjet recording methods, thermal transfer recording methods, electrical transfer recording methods, etc., and their development, research, and commercialization are recommended in various places. However, each method has its advantages and disadvantages, and there are problems that need to be resolved before commercialization. Ink jets have problems with reliability, especially nozzle clogging, and thermal transfer takes time for the thermal head to fall, and currently, the repetition rate is about 2 msec/dot.
In addition, the relatively high cost of ink sheets for both thermal transfer and electrical transfer and problems with resolution are obstacles to the widespread use of the products. Among these methods, there is a nozzle-less magnetic field graphics method that eliminates clogging, which is a disadvantage of the inkjet method. (Preliminary 10 of the 8th National Conference of the Japan Society of Image Electronics Engineers, 1981) This method supplies magnetic ink to the tip of a magnetized stylus, forms a meniscus, and causes the ink to fly by switching electrostatic attraction. Since the voltage is high, several hundred volts, it is impossible to drive an IC.
For this reason, the implementation of the head becomes complicated, and it is difficult to make an inexpensive and compact one.
本発明の目的は上記問題を解決し、複雑な構造
や高電圧印加を不用としながら高密度、高解像度
の記録を可能とする磁気インクを使用したプリン
タを提供する点にある。 SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and provide a printer using magnetic ink that enables high-density, high-resolution recording while eliminating the need for a complicated structure or high voltage application.
本発明のプリンタは、磁気インクを使用したプ
リンタにおいて、磁気インクを搭載保持する磁気
インク保持手段と、磁気インク保持手段と間隔を
隔てて設置された被記録体と、磁気インクに被記
録体方向に飛翔する力をバイアス印加するバイア
ス手段と、磁気インクを加熱し磁気インクの磁気
インク保持手段への吸引保持力を解除する加熱手
段とを備えたことを特徴とする。 The printer of the present invention is a printer using magnetic ink, and includes a magnetic ink holding means for mounting and holding magnetic ink, a recording medium installed at a distance from the magnetic ink holding means, and a magnetic ink direction toward the recording medium. The present invention is characterized by comprising a bias means for applying a bias force to cause the magnetic ink to fly, and a heating means for heating the magnetic ink and releasing the attraction and holding force of the magnetic ink to the magnetic ink holding means.
本発明による熱磁気スイツチプリンタの装置の
模式図を第１図に示す。図中、１０１は対向電
極、１０２は磁性スタイラスで、対向電極、磁性
スタイラス間には直流電圧がバイアスとして印加
されている。１０３は永久磁石、１０４は発熱
体、１０５は磁気インク、１０６は記録紙で、発
熱体は画信号に応じてスタイラス先端部を磁気イ
ンクを加熱する。該インクの温度上昇に伴い、磁
化の強さが減少し、加熱されたインクが対向電極
方向に飛翔し、スライラスと間隔を隔てて設置さ
れた記録紙上にドツト形成する。 A schematic diagram of a thermomagnetic switch printer apparatus according to the present invention is shown in FIG. In the figure, 101 is a counter electrode, 102 is a magnetic stylus, and a DC voltage is applied as a bias between the counter electrode and the magnetic stylus. 103 is a permanent magnet, 104 is a heating element, 105 is magnetic ink, and 106 is recording paper, and the heating element heats the magnetic ink at the tip of the stylus in accordance with an image signal. As the temperature of the ink increases, the strength of magnetization decreases, and the heated ink flies toward the counter electrode, forming dots on the recording paper placed at a distance from the sliver.
次にインク飛翔のメカニズムを第１図における
磁気インクに作用する各種の力を基に説明する。
第２図はその力を示したものである。図中、Fc
は、対向電極方向に働く静電引力、Fmは磁石方
向に働く磁気力、Fsはスタイラスへの付着力
（主に表面張力）であり、Fc、Fmは次式で表わ
される。 Next, the mechanism of ink flying will be explained based on various forces acting on the magnetic ink in FIG. 1.
Figure 2 shows this force. In the figure, Fc
is the electrostatic attraction force acting in the direction of the opposing electrode, Fm is the magnetic force acting in the direction of the magnet, Fs is the adhesion force (mainly surface tension) to the stylus, and Fc and Fm are expressed by the following equation.
Fc＝q.E
Fm＝ｖ・Ｍ・dH／dl
（式中、ｑは磁気インクの電解、Ｅは電界強度、
Ｖは該インク滴の体積、Ｍは磁化の強さ、dH／
dlは磁場勾配を表わす）
非加熱時にはFc＜Fm＋Fsであり、スタイラス
に付着しているが、加熱時には、磁気インクと
磁性スタイラスの両方の透磁率が温度変化に共な
い変わる場合にはＭとdH／dl磁気インクのみ
の透磁率が変化する場合にはＭが減少し、Fc＞
Fm＋Fsとなり、磁気インクは静電引力によりひ
かれ、対向電極方向に飛翔する。飛翔のメカニズ
ムは以上であるが、以下に実施例を掲げて詳しく
説明する。 Fc=qE Fm=v・M・dH/dl (where q is the electrolysis of the magnetic ink, E is the electric field strength,
V is the volume of the ink droplet, M is the strength of magnetization, dH/
(dl represents the magnetic field gradient) When not heated, Fc < Fm + Fs, and it is attached to the stylus, but when heated, when the magnetic permeability of both the magnetic ink and the magnetic stylus changes with temperature changes, M and dH /dl When the permeability of only the magnetic ink changes, M decreases and Fc>
Fm+Fs, and the magnetic ink is attracted by electrostatic attraction and flies toward the opposing electrode. The mechanism of flight has been described above, and will be explained in detail below using examples.
実施例 １
磁気インクは、Mn−Zn系フエライトのコロイ
ド粒子の表面に、オレイン酸を単分子層被覆した
ものを有機溶剤に均一に分散させた磁性流体に、
染料・粘度調整剤・湿潤剤等を添加したものを用
いた。Mn−Zn系フエライトの飽和磁化の温度特
性を第３図に示す。有料溶剤としては、オレイ
ン酸被覆のコロイド粒子と相溶性が良いこと。
温度上昇により、溶剤が揮発して、インクが乾燥
することのないように、比較的高沸点なもの、の
条件を満たすものとして、ジエステル系の有料溶
剤（沸点、330℃）を用いた。ヘツドの構造を第
４図に示す。図中、２０１は電極、２０２は、鉄
スタイラス、２０３は発熱体、２０４は絶縁保護
層である。スタイラス先端と対向電極間距離を
350μｍに設定し、直流印加電圧0.9とＶを印加し、
印加電力20W／mm2の発熱体で、室温−100℃の温
度スイツチを行なつたところ、くり返し周波数、
500Hzにて磁気インクの飛翔が確認された。Example 1 Magnetic ink is made by using a magnetic fluid in which the surface of colloidal particles of Mn-Zn ferrite is coated with a monomolecular layer of oleic acid, which is uniformly dispersed in an organic solvent.
A material containing dyes, viscosity modifiers, wetting agents, etc. was used. Figure 3 shows the temperature characteristics of saturation magnetization of Mn-Zn ferrite. As a paid solvent, it should have good compatibility with oleic acid-coated colloidal particles.
A diester-based paid solvent (boiling point, 330°C) was used as a solvent with a relatively high boiling point to prevent the ink from drying out due to volatilization due to temperature rise. The structure of the head is shown in Figure 4. In the figure, 201 is an electrode, 202 is an iron stylus, 203 is a heating element, and 204 is an insulating protective layer. The distance between the stylus tip and the opposing electrode
Set it to 350 μm, apply a DC applied voltage of 0.9 V,
When we performed a temperature switch from room temperature to -100℃ using a heating element with an applied power of 20W/ mm2 , the repetition frequency,
Flying of magnetic ink was confirmed at 500Hz.
実施例 ２
磁気インクは、実施例１と同様にジエステル系
有機溶剤の磁気流体ベースのものを用い、スタイ
ラスはキユーリー点が90℃のMn−Zn系フエライ
トを使用した。発熱体で室温−100℃の温度スイ
ツチを行なつたところ、くり返し周波数1KHzに
て磁気インクの飛翔が確認された。Example 2 As in Example 1, the magnetic ink was based on a magnetic fluid based on a diester organic solvent, and the stylus was made of Mn-Zn ferrite having a Curie point of 90°C. When the heating element was used to switch the temperature from room temperature to 100°C, flying of magnetic ink was confirmed at a repetition frequency of 1KHz.
実施例 ３
ジエステル系有機溶剤の磁気インクと、鉄スタ
イラスを用い、スタイラス先端のインク部に、ス
ポツト系50μｍのレーザー光を断続的に照射した
ところ、くり返し周波数2KHzにて、インクの飛
翔が確認された。Example 3 Using magnetic ink made from a diester-based organic solvent and an iron stylus, the ink portion at the tip of the stylus was intermittently irradiated with a spot laser beam of 50 μm, and the ink was confirmed to fly at a repetition frequency of 2 KHz. Ta.
なお、上記の実施例においてスタイラス先端部
に設けた発熱体またはレーザー照射により、磁気
インクとスタイラスの加熱を同時に行ない、磁気
インクとスタイラス双方の磁化を減少させること
により磁気インクを飛翔させてもよい。 In addition, in the above embodiment, the magnetic ink and the stylus may be simultaneously heated by a heating element provided at the tip of the stylus or laser irradiation, and the magnetic ink may be caused to fly by reducing the magnetization of both the magnetic ink and the stylus. .
以上述べた本発明の磁気インクプリンタによれ
ば、記録信号に対応して熱を印加すればよく、高
圧印加が不用であり、かつ印刷ヘツドの構造を簡
単にできる。また、磁気インクを飛翔させるもの
であるため、極めて高密度、高解像度の印刷を行
なうことができる。 According to the above-described magnetic ink printer of the present invention, it is only necessary to apply heat in response to recording signals, there is no need to apply high voltage, and the structure of the print head can be simplified. Furthermore, since magnetic ink is ejected, extremely high density and high resolution printing can be performed.
第１図は本発明の磁気インクプリンタの構成を
示す図。第２図は本発明の磁気インクプリンタの
磁気インクに働く各種力を示した図。第３図は本
発明の磁気インクプリンタに使用した磁気インク
の熱−磁気特性を示す図。第４図は本発明の磁気
インクプリンタにおいて発熱体部を設けたスタイ
ラスの構造を示す図。
１０１……対向電極、１０２……スタイラス、
１０３……永久磁石、１０４……発熱体部、１０
５……磁気インク、１０６……記録紙、Fc……
静電引力、Fm……磁気力、Fs……スタイラス付
着力。
FIG. 1 is a diagram showing the configuration of a magnetic ink printer of the present invention. FIG. 2 is a diagram showing various forces acting on the magnetic ink of the magnetic ink printer of the present invention. FIG. 3 is a diagram showing the thermo-magnetic characteristics of the magnetic ink used in the magnetic ink printer of the present invention. FIG. 4 is a diagram showing the structure of a stylus provided with a heating element in the magnetic ink printer of the present invention. 101...Counter electrode, 102...Stylus,
103...Permanent magnet, 104...Heating element part, 10
5... Magnetic ink, 106... Recording paper, Fc...
Electrostatic attraction, Fm...Magnetic force, Fs...Stylus adhesion force.
Claims (1)
手段と、前記磁気インク保持手段と間隔を隔てて
設置された被記録体と、前記磁気インクに前記被
記録体方向に飛翔する力をバイアス印加するバイ
アス手段と、前記磁気インクを加熱し前記磁気イ
ンクの前記磁気インク保持手段への吸引保持力を
解除する加熱手段とを備えたことを特徴とする磁
気インクプリンタ。[Scope of Claims] 1. A printer using magnetic ink, comprising: a magnetic ink holding means for mounting and holding the magnetic ink; a recording medium installed at a distance from the magnetic ink holding means; The recording medium is characterized by comprising a bias means for applying a bias force to cause the magnetic ink to fly in the direction of the recording medium, and a heating means for heating the magnetic ink and releasing the attraction and holding force of the magnetic ink to the magnetic ink holding means. magnetic ink printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21097782A JPS59101372A (en) | 1982-12-01 | 1982-12-01 | Thermomagnetic switch printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21097782A JPS59101372A (en) | 1982-12-01 | 1982-12-01 | Thermomagnetic switch printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59101372A JPS59101372A (en) | 1984-06-11 |
| JPH0450190B2 true JPH0450190B2 (en) | 1992-08-13 |
Family
ID=16598257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21097782A Granted JPS59101372A (en) | 1982-12-01 | 1982-12-01 | Thermomagnetic switch printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59101372A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4776712A (en) * | 1984-10-25 | 1988-10-11 | Tokyo Electric Co., Ltd. | Ink-dot printer |
| JPS62187732U (en) * | 1986-05-20 | 1987-11-30 |
-
1982
- 1982-12-01 JP JP21097782A patent/JPS59101372A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59101372A (en) | 1984-06-11 |
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