JPH03158880A - Magnetic recorder - Google Patents
Magnetic recorderInfo
- Publication number
- JPH03158880A JPH03158880A JP29886389A JP29886389A JPH03158880A JP H03158880 A JPH03158880 A JP H03158880A JP 29886389 A JP29886389 A JP 29886389A JP 29886389 A JP29886389 A JP 29886389A JP H03158880 A JPH03158880 A JP H03158880A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic fluid
- flow rate
- fluid
- circulating
- 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
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 61
- 239000011553 magnetic fluid Substances 0.000 claims abstract description 50
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 abstract description 11
- 239000002904 solvent Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、磁性流体を現像剤として用いる磁気記録装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording device that uses a magnetic fluid as a developer.
［従来の技術］
磁気記録方法は、磁性体層に形成された磁気潜像を、磁
性トナー等の磁性材料を用いて顕像化するものである。[Prior Art] A magnetic recording method is a method of visualizing a magnetic latent image formed on a magnetic layer using a magnetic material such as magnetic toner.
磁気潜像は高解像度を有しているため、磁気記録方法は
微細パターンの形成方法として有望である。Since magnetic latent images have high resolution, magnetic recording methods are promising as a method for forming fine patterns.
しかし、磁性材料に磁性トナーを用いた場合、磁性トナ
ーの粒径が１０マイクロメータ以上あるため、磁気潜像
に見合った微細パターンの形成ができなかった。However, when a magnetic toner is used as the magnetic material, a fine pattern commensurate with the magnetic latent image cannot be formed because the particle size of the magnetic toner is 10 micrometers or more.
上記問題に対して、磁性材料に磁性流体を用いた磁気記
録装置が提案されている（例えば、特開昭６０−４８０
６３号公報）。特開昭６０−４８０６３号公報に開示さ
れた磁気記録装置は、磁気潜像が形成された磁気ドラム
の表面を磁性流体中に浸し、磁気ドラムを回転させなが
ら磁気潜像を順次顕像化するものである。To solve the above problem, magnetic recording devices using magnetic fluid as the magnetic material have been proposed (for example, Japanese Patent Laid-Open No. 60-480
Publication No. 63). The magnetic recording device disclosed in Japanese Patent Application Laid-Open No. 60-48063 immerses the surface of a magnetic drum on which a magnetic latent image is formed in a magnetic fluid, and sequentially visualizes the magnetic latent image while rotating the magnetic drum. It is something.
［解決しようとするａｔ題］
上記従来の磁気記録装置では、磁性流体中に混入したゴ
ミや磁性流体中での凝集した磁性粉が磁気ドラムに付着
し、著しく記録品位を低下させることがあった。[Problem to be solved] In the conventional magnetic recording device described above, dust mixed in the magnetic fluid and agglomerated magnetic powder in the magnetic fluid sometimes adhere to the magnetic drum, significantly degrading the recording quality. .
本発明の目的は、磁性流体中に含まれる不要物の磁気ド
ラムへの付着を防止し、記録品位の向上をはかることで
ある。An object of the present invention is to prevent unnecessary substances contained in magnetic fluid from adhering to a magnetic drum and to improve recording quality.
本発明における磁気記録装置は、磁性流体を循環させる
とともに、循環中の磁性流体中に含まれる不要物をａ遇
するものである。The magnetic recording device according to the present invention circulates magnetic fluid and discards unnecessary substances contained in the circulating magnetic fluid.
［実施例］ 以下、添付図面に基いて本発明の詳細な説明を行う。[Example] Hereinafter, the present invention will be described in detail based on the accompanying drawings.
まず、図面に示した各構成要素について説明を行う。First, each component shown in the drawings will be explained.
１１は磁性体層であり、Ｆｅ２Ｏ３、Ｃｒ ０２などや
、Ｆｅ （鉄）、Ｎ１（−ッケル）、Ｃｏ（コバルト
）の粉末を樹脂中に分散させたものである。Reference numeral 11 denotes a magnetic layer in which powders such as Fe2O3, Cr02, Fe (iron), N1 (-nickel), and Co (cobalt) are dispersed in a resin.
図面には示していないが、この磁性体層１１表面には保
：！に層を設けてもよい。Although not shown in the drawings, the surface of this magnetic layer 11 is coated with:! A layer may be provided.
１２は円柱または円筒状の基体であり、その表面には磁
性体層１１が形成され、矢印の方向に回転するものであ
る。Reference numeral 12 denotes a columnar or cylindrical base body, on the surface of which a magnetic layer 11 is formed, which rotates in the direction of the arrow.
上記磁性体層１１および基体１２により、磁気ドラム１
３が構成される。The magnetic layer 11 and the base 12 make the magnetic drum 1
3 is composed.
１４は磁気潜像形成手段となる書込みヘッドであり、磁
性体層１１に磁気パターンを書込み、磁気潜像を形成す
るものである。A writing head 14 serves as a magnetic latent image forming means, and writes a magnetic pattern on the magnetic layer 11 to form a magnetic latent image.
１５は消磁ヘッドであり、磁気潜像を消去するものであ
る。A demagnetizing head 15 erases the magnetic latent image.
１６はクリーニングブレードであり、磁気ドラム１３表
面に付着した磁性流体（後述する。）等を取除き、磁気
ドラム１３表面をクリーニングするものである。A cleaning blade 16 cleans the surface of the magnetic drum 13 by removing magnetic fluid (described later) and the like adhering to the surface of the magnetic drum 13.
１７は記録媒体であり、通常転写紙等が用いられる。17 is a recording medium, and transfer paper or the like is usually used.
１８は転写ローラであり、磁性体層１１の磁気潜像に対
応して形成された磁性流体による現像パターンを、記録
媒体１７に順次転写するものである。Reference numeral 18 denotes a transfer roller, which sequentially transfers, onto the recording medium 17, a developed pattern formed by magnetic fluid corresponding to the magnetic latent image on the magnetic layer 11.
２１は磁性流体であり、１０ナノメ一タ程度の強磁性粉
末を水や打機溶媒に懸濁させたものである。21 is a magnetic fluid, which is made by suspending ferromagnetic powder of about 10 nanometers in water or a driving solvent.
２２は収納容器であり、磁性流体２１を収納するもので
ある。22 is a storage container that stores the magnetic fluid 21.
２３は磁性流体の溶媒である。23 is a solvent for the magnetic fluid.
２４は収納容器であり、溶媒２３を収納するものである
。24 is a storage container that stores the solvent 23.
２５は循環手段であり、磁性流体２１を循環させるもの
である。この循環手段２５は、例えばモータで羽根を回
すものである。Reference numeral 25 denotes a circulation means, which circulates the magnetic fluid 21. The circulation means 25 is, for example, a motor that rotates blades.
２６は濾過手段であり、循環中の磁性流体に含まれる不
要物を濾過するものである。A filtration means 26 filters out unnecessary substances contained in the circulating magnetic fluid.
２７は流量検出装置であり、循環中の磁性流体２１の流
量を検出するものである。この流量検出装置２７には、
例えば差圧式のものを用いることができる。27 is a flow rate detection device, which detects the flow rate of the magnetic fluid 21 during circulation. This flow rate detection device 27 includes:
For example, a differential pressure type can be used.
２８は検出回路であり、流量検出装置２７で検出した単
位時間当りの流量に基いて、磁性流体２１の粘度を検出
するものである。A detection circuit 28 detects the viscosity of the magnetic fluid 21 based on the flow rate per unit time detected by the flow rate detection device 27.
２９は制御回路であり、検出回路２８からの情報に基い
て、後述の制御バルブ３０の開閉状態を制御するもので
ある。Reference numeral 29 denotes a control circuit, which controls the opening/closing state of a control valve 30, which will be described later, based on information from the detection circuit 28.
３０は制御バルブであり、制御回路２９からの信号に基
いて開閉動作をするものである。Reference numeral 30 denotes a control valve, which opens and closes based on a signal from the control circuit 29.
つぎに、′本実施例の動作について説明する。Next, the operation of this embodiment will be explained.
まず、磁気潜像の形成、転写等の一連の動作について説
明する。First, a series of operations such as formation and transfer of a magnetic latent image will be explained.
磁性体層１１には、書込みヘッド１４により所定の磁気
パターンが順次書込まれ、磁気潜像が形成される。磁気
ドラム１３が回転して磁気潜像部が磁性流体２１中に浸
ると、磁気潜像が形成されている磁気ドラム１３表面に
は磁気力により磁性流体が付着し、現像が行われる。磁
気潜像が形成されていない部分では、磁性流体２１との
間に磁気力が働かないため、磁性流体が付着することは
ない。磁気ドラム１３表面に付着した磁性流体の現像パ
ターンは、転写ローラ１８により記録媒体１７に転写さ
れる。転写動作が終わると、磁気潜像は消磁ヘッド１５
により消去される。消磁動作が終了すると、クリーニン
グブレード１６により、磁気ドラム１３表面に付着した
磁性流体等が取除かれ、磁気ドラム１３の表面がクリー
ニングされる。A predetermined magnetic pattern is sequentially written into the magnetic layer 11 by a write head 14 to form a magnetic latent image. When the magnetic drum 13 rotates and the magnetic latent image portion is immersed in the magnetic fluid 21, the magnetic fluid adheres to the surface of the magnetic drum 13 on which the magnetic latent image is formed due to magnetic force, and development is performed. In the portion where the magnetic latent image is not formed, no magnetic force acts between the magnetic fluid 21 and the magnetic fluid 21, so that the magnetic fluid does not adhere. The developed pattern of the magnetic fluid adhered to the surface of the magnetic drum 13 is transferred onto the recording medium 17 by the transfer roller 18 . When the transfer operation is completed, the magnetic latent image is transferred to the degaussing head 15.
It is erased by When the degaussing operation is completed, the cleaning blade 16 removes the magnetic fluid and the like adhering to the surface of the magnetic drum 13, thereby cleaning the surface of the magnetic drum 13.
以上のようにして、磁気記録の一連のサイクルが終了す
る。In this manner, a series of magnetic recording cycles is completed.
つぎに、磁性流体２１を循環させる動作、および、磁性
流体２１の粘度を一定に保つ動作について説明する。Next, the operation of circulating the magnetic fluid 21 and the operation of keeping the viscosity of the magnetic fluid 21 constant will be explained.
磁性流体２１は循環手段２５により常に循環している。The magnetic fluid 21 is constantly circulated by a circulation means 25.
磁性流体に３まれる不要物は、循環中にろ過手段２６で
濾過される。そのため、磁性流体２１は常に清浄に保た
れる。また、循環中の磁性流体２１の流量は、流量検出
装置２７で検出される。検出回路２８では、流ご検出装
置２７で検出した単位時間当りの？ＩＸｔｎに基いて、
磁性流体２１の粘度を検出する。制御回路２９では、検
出回路２８からの情報に基いて、制御バルブ３０の開閉
状態を制御する。例えば、磁性流体２１の溶媒が蒸発し
て磁性流体２１の粘度が増すと、制御回路２９からの信
号を受けて制御バルブ３０が開く。Unwanted substances contained in the magnetic fluid are filtered by the filtration means 26 during circulation. Therefore, the magnetic fluid 21 is always kept clean. Further, the flow rate of the magnetic fluid 21 during circulation is detected by a flow rate detection device 27. The detection circuit 28 detects the amount of ? per unit time detected by the flow detection device 27. Based on IXtn,
The viscosity of the magnetic fluid 21 is detected. The control circuit 29 controls the open/close state of the control valve 30 based on the information from the detection circuit 28 . For example, when the solvent of the magnetic fluid 21 evaporates and the viscosity of the magnetic fluid 21 increases, the control valve 30 opens in response to a signal from the control circuit 29 .
その結果、収納容器２４内の溶媒２３が制御バルブ３０
を通して流出し、磁性流体２１の粘度が一定に保たれる
。As a result, the solvent 23 in the storage container 24 is transferred to the control valve 30.
The viscosity of the magnetic fluid 21 is kept constant.
［効果］
本発明における磁気記録装置では、磁性流体を循環させ
るとともに、循環中の磁性流体中に含まれる不要物を濾
過するため、磁性流体は常に清浄に保たれる。従って、
磁性流体中に含まれる不要物の磁気ドラムへの付着が減
少し、記録品位の向上をはかることができる。[Effects] In the magnetic recording device of the present invention, the magnetic fluid is circulated and unnecessary substances contained in the circulating magnetic fluid are filtered, so that the magnetic fluid is always kept clean. Therefore,
Adhesion of unnecessary substances contained in the magnetic fluid to the magnetic drum is reduced, and recording quality can be improved.
図は本発明の実施例を示した説明図である。
１１・・・磁性体層
１４・・・書き込みヘッド（磁気潜像形成手段）２５・
・・循環手段
２６・・・濾過手段
以上The figure is an explanatory diagram showing an embodiment of the present invention. 11... Magnetic layer 14... Write head (magnetic latent image forming means) 25.
... Circulation means 26 ... More than filtration means
Claims (1)
と からなる磁気記録装置。[Scope of Claims] A magnetic latent image forming means for forming a magnetic latent image on a magnetic layer; a developing means for developing the magnetic latent image using a magnetic fluid; a circulation means for circulating the magnetic fluid; A magnetic recording device comprising a filtration means for filtering out unnecessary substances contained in a magnetic fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29886389A JPH03158880A (en) | 1989-11-17 | 1989-11-17 | Magnetic recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29886389A JPH03158880A (en) | 1989-11-17 | 1989-11-17 | Magnetic recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03158880A true JPH03158880A (en) | 1991-07-08 |
Family
ID=17865168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29886389A Pending JPH03158880A (en) | 1989-11-17 | 1989-11-17 | Magnetic recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03158880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324603A (en) * | 1992-04-17 | 1994-06-28 | At&T Bell Laboratories | Method for forming an image on a magnetic composite medium and apparatus therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5915956A (en) * | 1982-07-20 | 1984-01-27 | Ricoh Co Ltd | Electrostatic latent image developing device |
| JPS6048063A (en) * | 1983-08-25 | 1985-03-15 | Mita Ind Co Ltd | Magnetic recording method |
-
1989
- 1989-11-17 JP JP29886389A patent/JPH03158880A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5915956A (en) * | 1982-07-20 | 1984-01-27 | Ricoh Co Ltd | Electrostatic latent image developing device |
| JPS6048063A (en) * | 1983-08-25 | 1985-03-15 | Mita Ind Co Ltd | Magnetic recording method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324603A (en) * | 1992-04-17 | 1994-06-28 | At&T Bell Laboratories | Method for forming an image on a magnetic composite medium and apparatus therefor |
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