JPH0587834B2 - - Google Patents
Info
- Publication number
- JPH0587834B2 JPH0587834B2 JP34178889A JP34178889A JPH0587834B2 JP H0587834 B2 JPH0587834 B2 JP H0587834B2 JP 34178889 A JP34178889 A JP 34178889A JP 34178889 A JP34178889 A JP 34178889A JP H0587834 B2 JPH0587834 B2 JP H0587834B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic recording
- layer
- magnetic fluid
- recording medium
- 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
- 230000005291 magnetic effect Effects 0.000 claims description 121
- 239000011553 magnetic fluid Substances 0.000 claims description 70
- 239000007788 liquid Substances 0.000 claims description 69
- 238000001704 evaporation Methods 0.000 claims description 56
- 230000008020 evaporation Effects 0.000 claims description 52
- 230000002265 prevention Effects 0.000 claims description 43
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 239000010410 layer Substances 0.000 description 68
- 239000011247 coating layer Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000000740 bleeding effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000005294 ferromagnetic effect Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NQNBVCBUOCNRFZ-UHFFFAOYSA-N nickel ferrite Chemical compound [Ni]=O.O=[Fe]O[Fe]=O NQNBVCBUOCNRFZ-UHFFFAOYSA-N 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Wet Developing In Electrophotography (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、磁気記録体に磁気潜像を形成した
後、磁気潜像を磁性流体を用いて顕像化し、その
像を記録媒体へ転写する磁気記録装置に関するも
のである。[Detailed Description of the Invention] [Industrial Application Field] This invention involves forming a magnetic latent image on a magnetic recording medium, then visualizing the magnetic latent image using a magnetic fluid, and transferring the image to a recording medium. The present invention relates to a magnetic recording device.
［従来の技術］
従来、このような磁気記録装置では、磁性流体
は上方が開口した容器に入つており、また磁気記
録体の一部がこの開口部より磁性流体に浸漬され
ており、磁気記録体を回転させながら磁気潜像が
形成された部分を順次磁性流体の中に挿入して現
像を行つていた。[Prior Art] Conventionally, in such a magnetic recording device, magnetic fluid is contained in a container with an opening at the top, and a part of the magnetic recording body is immersed in the magnetic fluid through the opening. While rotating the body, the parts on which the magnetic latent images were formed were sequentially inserted into the magnetic fluid for development.
［解決しようとする課題］
従つて磁性流体中の溶媒が上方の開口部より蒸
発し、磁性流体の粘度が変わり、また磁性流体中
の強磁性粉が空気中の酸素と酸化反応して、磁気
特性が変わり、これらのことにより、現像の特性
が変化するという問題点があつた。[Problem to be solved] Therefore, the solvent in the magnetic fluid evaporates from the upper opening, the viscosity of the magnetic fluid changes, and the ferromagnetic powder in the magnetic fluid undergoes an oxidation reaction with oxygen in the air, causing magnetic There was a problem that the characteristics changed, and the development characteristics changed due to these changes.
そこで本発明の目的は、磁性流体中の溶媒の蒸
発及び磁性流体が空気中の酸素と反応するのを防
止し、常に一定特性の現像を得ることが可能な磁
気記録装置を提供することにある。また、他の目
的は、磁気記録媒体の表面の傷や汚れ等による現
像のムラやかぶり等を防止し、更に転写工程での
記録媒体内における転写された磁性流体のその周
囲へのにじみを防止することにある。 Therefore, an object of the present invention is to provide a magnetic recording device that can prevent the evaporation of the solvent in the magnetic fluid and the reaction of the magnetic fluid with oxygen in the air, and can always obtain development with constant characteristics. . Another purpose is to prevent uneven development and fogging caused by scratches and dirt on the surface of the magnetic recording medium, and to prevent the transferred magnetic fluid from bleeding into the surrounding area in the recording medium during the transfer process. It's about doing.
［課題を解決するための手段］
上記目的を達成するために、本発明は、磁気記
録体と、磁気記録体に磁気潜像を形成する手段
と、磁気記録体を磁性流体層に浸漬することによ
り磁気潜像を顕像化する現像手段と、顕像化した
磁性流体の像を記録媒体へ転写する転写手段とを
有する磁気記録装置において、磁性流体層は容器
に蓄えられたものであり、容器に蓄えられた磁性
流体層の上に、磁性流体層の蒸発防止のための液
層が設けてある。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a magnetic recording body, a means for forming a magnetic latent image on the magnetic recording body, and a method for immersing the magnetic recording body in a magnetic fluid layer. In a magnetic recording device having a developing means for visualizing a magnetic latent image and a transfer means for transferring the visualized image of the magnetic fluid to a recording medium, the magnetic fluid layer is stored in a container, A liquid layer is provided on the magnetic fluid layer stored in the container to prevent evaporation of the magnetic fluid layer.
また、磁気記録体を磁性流体層に浸漬する前
に、磁気記録体の表面を蒸発防止液層と同一の液
でコーテイングする手段が設けてある。 Further, before the magnetic recording body is immersed in the magnetic fluid layer, means is provided for coating the surface of the magnetic recording body with the same liquid as the evaporation prevention liquid layer.
更に、蒸発防止液層に用いる蒸発防止液は、磁
気記録体の表面に対して接触角が小さく、磁気記
録体の表面になじむものを用いた。 Furthermore, the evaporation prevention liquid used in the evaporation prevention liquid layer had a small contact angle with respect to the surface of the magnetic recording medium and was compatible with the surface of the magnetic recording medium.
［作用］
磁性流体層の上に磁性流体層の蒸発防止のため
の液層が設けてあるために、磁性流体中の溶媒の
蒸発が防止され、また磁性流体が空気中の酸素と
反応するのが防止される。[Function] Since a liquid layer is provided on the magnetic fluid layer to prevent evaporation of the magnetic fluid layer, evaporation of the solvent in the magnetic fluid is prevented and the reaction of the magnetic fluid with oxygen in the air is prevented. is prevented.
［実施例］
以下、本発明の実施例を図面に基づいて詳細に
説明する。[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.
まず第１実施例について説明する。 First, a first example will be described.
第１図において、磁気記録体１は円柱または円
筒の基体の外周に磁性体層を形成した磁気ドラム
からなつている。磁性体層はFe2O3，CrO2など
や、Fe（鉄）、Ni（ニツケル）、Co（コバルト）の
粉末を樹脂中に分散させたものである。磁気記録
体１は図示のように時計方向に回転し、磁気記録
体１の表面１ａの周囲に配置してある各工程を順
次たどるようになつている。 In FIG. 1, a magnetic recording medium 1 consists of a magnetic drum having a cylindrical or cylindrical base body with a magnetic layer formed around the outer periphery thereof. The magnetic layer is made by dispersing powders of Fe 2 O 3 , CrO 2 , Fe (iron), Ni (nickel), and Co (cobalt) in a resin. The magnetic recording body 1 is rotated clockwise as shown in the figure, and each step arranged around the surface 1a of the magnetic recording body 1 is successively followed.
磁気潜像形成手段２は、例えば磁気ヘツドから
なり、磁気記録体１の磁性体層に磁気パターンを
書き込み、磁気潜像を形成するものである。 The magnetic latent image forming means 2 is composed of, for example, a magnetic head, and writes a magnetic pattern on the magnetic layer of the magnetic recording medium 1 to form a magnetic latent image.
現像手段３は、容器３１に蓄えられた磁性流体
層３２に磁気記録体１の磁性体層を浸漬して、磁
気潜像を顕像化する構成となつている。従つて現
像手段３は磁気記録体１の真下の位置に設けてあ
り、容器３１は上方が開口部３１ａとなつてお
り、開口部３１ａより磁気記録体１が入り込んで
その一部が磁性流体層３２に浸漬して、磁気記録
体１が回転することにより磁気潜像が形成された
部分が順次磁性流体の中に挿入されるようになつ
ている。磁性流体は、５〜50ナノメータ程度の粒
径の強磁性粉末を水や有機溶媒に所定割合で懸濁
させたものである。強磁性粉末としてはマグネタ
イト、コバルト−フエライト、ニツケル−フエラ
イト、マンガン−フエライト、ニツケル−亜鉛−
フエライト、鉄、ニツケル、クロム等がある。 The developing means 3 is configured to immerse the magnetic layer of the magnetic recording medium 1 in a magnetic fluid layer 32 stored in a container 31 to visualize a magnetic latent image. Therefore, the developing means 3 is provided at a position directly below the magnetic recording medium 1, and the container 31 has an opening 31a at the top, and the magnetic recording medium 1 enters through the opening 31a, and a part of it becomes a magnetic fluid layer. 32 and the magnetic recording body 1 rotates, so that the portions on which the magnetic latent images are formed are sequentially inserted into the magnetic fluid. The magnetic fluid is made by suspending ferromagnetic powder with a particle size of about 5 to 50 nanometers in water or an organic solvent at a predetermined ratio. Ferromagnetic powders include magnetite, cobalt ferrite, nickel ferrite, manganese ferrite, and nickel zinc.
There are ferrite, iron, nickel, chromium, etc.
磁性流体層３２の上には磁性流体層３２の蒸発
防止のための液層３３が設けてある。蒸発防止液
層３３は磁性流体層３２の上を被覆するものであ
るため、磁性流体層３２より比重が軽くかつ磁性
流体層３２と溶け合わず、また蒸発しにくいもの
が好ましい。例えば磁性流体層３２が強磁性粉末
を水に懸濁したものである場合、シリコンオイル
等を蒸発防止液層３３として用いることができ
る。この実施例では、蒸発防止液層３３は、磁気
記録体の表面１ａによく馴染んで広がるように磁
気記録体１の表面１ａに対して接触角が小さく、
また後述の転写の際に記録媒体５に吸収されるよ
うにしており、上記のシリコンオイルはこの条件
を満足させるものである。なお、磁気記録体１の
表面１ａに十分なコーテイングがなされるために
は、蒸発防止液層３３に所定層厚が必要であり、
また接触角は磁気記録体１の表面１ａの面状態と
関連するものであるため、接触角を小さくするた
めに、磁気記録体１の表面１ａもよりなめらかな
ものにしている。 A liquid layer 33 is provided on the magnetic fluid layer 32 to prevent the magnetic fluid layer 32 from evaporating. Since the evaporation prevention liquid layer 33 covers the magnetic fluid layer 32, it is preferable that the liquid layer has a lower specific gravity than the magnetic fluid layer 32, does not mix with the magnetic fluid layer 32, and is difficult to evaporate. For example, when the magnetic fluid layer 32 is made of ferromagnetic powder suspended in water, silicone oil or the like can be used as the evaporation prevention liquid layer 33. In this embodiment, the evaporation prevention liquid layer 33 has a small contact angle with respect to the surface 1a of the magnetic recording body 1 so that it spreads well over the surface 1a of the magnetic recording body 1.
Further, it is designed to be absorbed into the recording medium 5 during transfer, which will be described later, and the silicone oil described above satisfies this condition. Note that in order to sufficiently coat the surface 1a of the magnetic recording medium 1, the evaporation prevention liquid layer 33 needs to have a predetermined thickness;
Furthermore, since the contact angle is related to the surface condition of the surface 1a of the magnetic recording body 1, the surface 1a of the magnetic recording body 1 is also made smoother in order to reduce the contact angle.
転写手段４は、記録媒体５を転写ローラ４１と
磁気記録体１との間に挟んで、転写ローラ４１を
反時計回りに回転させる構成となつている。これ
により磁気潜像に対応して形成された磁性流体に
よる現像パターンが、記録媒体５に順次転写され
る。記録媒体５は蒸発防止液層３３がよく吸収さ
れる材質を用いている。 The transfer means 4 is configured to sandwich the recording medium 5 between the transfer roller 41 and the magnetic recording medium 1 and rotate the transfer roller 41 counterclockwise. As a result, development patterns formed by the magnetic fluid corresponding to the magnetic latent images are sequentially transferred onto the recording medium 5. The recording medium 5 is made of a material that can absorb the evaporation prevention liquid layer 33 well.
消磁ヘツド６は磁気潜像を消去するためのもの
である。 The degaussing head 6 is for erasing the magnetic latent image.
クリーニング手段７は円筒状のスポンジから構
成され、時計方向に回転して磁気記録体１の表面
１ａをクリーニングするものである。 The cleaning means 7 is composed of a cylindrical sponge and rotates clockwise to clean the surface 1a of the magnetic recording medium 1.
次に作用について説明する。 Next, the effect will be explained.
磁気記録体１の回転に従つて、磁気潜像形成手
段２により、磁性体層に順次磁気潜像が形成され
る。 As the magnetic recording body 1 rotates, the magnetic latent image forming means 2 sequentially forms magnetic latent images on the magnetic layer.
磁気潜像が形成された部分は、現像工程へ進
み、まず容器３１内の蒸発防止液層３３に浸漬さ
れる。蒸発防止液層３３は磁気記録体１の表面１
ａになじみやすい液体を用いているため、磁気記
録体１の表面１ａがこの液体によりコーテイング
され、また表面１ａに傷がある場合にはこの部分
に入り込んで滑らかな面とし、汚れがある場合に
はその上より覆つて汚れが表面１ａから隠れる。 The portion on which the magnetic latent image has been formed proceeds to a developing step, and is first immersed in an evaporation prevention liquid layer 33 in a container 31. The evaporation prevention liquid layer 33 is formed on the surface 1 of the magnetic recording medium 1.
Since a liquid is used that is easily compatible with the magnetic recording medium 1, the surface 1a of the magnetic recording medium 1 is coated with this liquid, and if there is a scratch on the surface 1a, it will penetrate into this area to make it a smooth surface, and if there is dirt, it will coat the surface 1a with this liquid. is covered from above so that dirt is hidden from the surface 1a.
磁気潜像が形成された部分は、次に蒸発防止液
層３３の下側に蓄えられている磁性流体層３２に
浸漬され、磁性流体層３２が磁気潜像部分の磁界
勾配に引かれて吸着して、この部分が顕像化され
る。この際、磁気記録体１の表面１ａは蒸発防止
液によりコーテイングされているため、強磁性粉
末はこの外側より吸着する。また表面１ａに傷や
汚れがある場合にはその上より蒸発防止液がコー
テイングされているため、表面状態による現像の
ムラやかぶり等が防止される。 The area where the magnetic latent image is formed is then immersed in the magnetic fluid layer 32 stored under the evaporation prevention liquid layer 33, and the magnetic fluid layer 32 is attracted by the magnetic field gradient of the magnetic latent image area and is attracted. Then, this part is visualized. At this time, since the surface 1a of the magnetic recording body 1 is coated with an evaporation prevention liquid, the ferromagnetic powder is attracted from the outside. Furthermore, if there are scratches or stains on the surface 1a, the anti-evaporation liquid is coated over the scratches or stains, thereby preventing uneven development, fogging, etc. due to the surface condition.
磁気潜像が形成された部分は、次に転写工程へ
進む。第２図示のように、磁気潜像が形成されて
いる部分は磁性流体粒３２ａが吸着しているが、
その他の部分にも蒸発防止液のコーテイング層３
３ａが存在している。従つて記録媒体５へ転写し
ていく場合、記録媒体５には磁性流体粒３２ａが
吸着すると同時に、蒸発防止液のコーテイング層
３３ａがその間に吸着されていく。従つて、記録
媒体５内において磁性流体粒３２ａの間に蒸発防
止液が介在するため、蒸発防止液に阻止され、磁
性流体の周囲へのにじみが防止される。 The portion on which the magnetic latent image has been formed then proceeds to a transfer step. As shown in the second diagram, the magnetic fluid particles 32a are attracted to the area where the magnetic latent image is formed.
Coating layer 3 of evaporation prevention liquid on other parts
3a exists. Therefore, when transferring to the recording medium 5, the magnetic fluid particles 32a are attracted to the recording medium 5, and at the same time, the coating layer 33a of the evaporation prevention liquid is also attracted therebetween. Therefore, since the evaporation prevention liquid is present between the magnetic fluid particles 32a in the recording medium 5, the evaporation prevention liquid prevents the magnetic fluid from bleeding into the surrounding area.
転写の後、磁気潜像が形成されている部分は、
消磁ヘツド６により消磁され、またクリーニング
手段７により磁気記録体１の表面１ａがクリーニ
ングされ、再び磁気潜像形成手段２により磁気潜
像が形成され、上述の工程が繰り返される。 After transfer, the area where the magnetic latent image is formed is
The magnetic recording medium 1 is demagnetized by the demagnetizing head 6, the surface 1a of the magnetic recording medium 1 is cleaned by the cleaning means 7, a magnetic latent image is formed again by the magnetic latent image forming means 2, and the above-mentioned steps are repeated.
次に本発明の第２実施例について説明する。 Next, a second embodiment of the present invention will be described.
第３図において、表面コーテイング手段８が、
現像工程に至る位置に設けてある。表面コーテイ
ング手段８は、弾性がありかつコーテイング液を
よく吸収するコーテイングローラ８１を、容器８
２に入つたコーテイング液３３ｂに浸す一方、磁
気記録体１の表面１ａに当接させたものであり、
コーテイングローラ８１を時計方向に回転させて
コーテイング液３３ｂを磁気記録体１の表面１ａ
に塗布しコーテイングするようになつている。コ
ーテイング液３３ｂは容器３１内の蒸発防止液層
３３と同一の液体であり、コーテイングされた
後、磁気記録体１の回転により容器３１内の蒸発
防止液層３３へ至り一体化する。 In FIG. 3, the surface coating means 8 are
It is provided at a position leading to the developing process. The surface coating means 8 includes a coating roller 81 which is elastic and absorbs coating liquid well, and is placed in a container 8.
While being immersed in the coating liquid 33b contained in 2, it is brought into contact with the surface 1a of the magnetic recording medium 1,
The coating roller 81 is rotated clockwise to apply the coating liquid 33b to the surface 1a of the magnetic recording medium 1.
It is now used as a coating. The coating liquid 33b is the same liquid as the evaporation prevention liquid layer 33 in the container 31, and after being coated, the magnetic recording body 1 rotates to reach the evaporation prevention liquid layer 33 in the container 31 and become integrated therewith.
容器３１には予備タンク９が可撓性チユーブ９
ａで連結されている。予備タンク９内の予備の磁
性流体３２ｂの表面には蒸発防止液層１０が被覆
されている。これにより予備タンク９内の予備の
磁性流体３２ｂの溶媒の蒸発及び予備の磁性流体
３２ｂの空気中の酸素との反応が防止される。な
お予備タンク９内の蒸発防止液層１０は容器３１
内の蒸発防止液層３３と同一種類の液である必要
はない。予備タンク９は上下移動し、これにより
容器３１内の磁性流体層３２の液面の高さを一定
に保つようになつている。即ち容器３１には磁性
流体層３２の液面の高さを検知する液面測定器
（図示省略）が設けられており、また予備タンク
９は不図示の上下移動手段により上下移動可能に
なつており、液面測定器により測定された磁性流
体層３２の液面高さが所定高さ範囲内より外れた
場合には、上下移動手段を駆動して予備タンク９
を上下させ、磁性流体層３２の高さを所定高さ範
囲内に納めるようになつている。 The container 31 includes a reserve tank 9 and a flexible tube 9.
connected by a. The surface of the preliminary magnetic fluid 32b in the preliminary tank 9 is coated with an evaporation prevention liquid layer 10. This prevents the evaporation of the solvent of the spare magnetic fluid 32b in the spare tank 9 and the reaction of the spare magnetic fluid 32b with oxygen in the air. Note that the evaporation prevention liquid layer 10 in the reserve tank 9 is in the container 31.
It does not need to be the same type of liquid as the evaporation prevention liquid layer 33 inside. The reserve tank 9 moves up and down, thereby keeping the liquid level of the magnetic fluid layer 32 in the container 31 constant. That is, the container 31 is provided with a liquid level measuring device (not shown) for detecting the height of the liquid level of the magnetic fluid layer 32, and the reserve tank 9 can be moved up and down by a vertical movement means (not shown). If the liquid level of the magnetic fluid layer 32 measured by the liquid level measuring device is out of the predetermined height range, the vertical moving means is driven to move the reserve tank 9.
is raised and lowered to keep the height of the magnetic fluid layer 32 within a predetermined height range.
本実施例の他の構成は第１実施例と同様である
ため、図面に同一符号を付して説明を省略する。 Since the other configurations of this embodiment are the same as those of the first embodiment, the same reference numerals are attached to the drawings and the explanation thereof will be omitted.
次に作用について説明する。 Next, the effect will be explained.
磁気潜像形成手段２により磁気潜像が形成され
た後、表面コーテイング手段８により磁気記録体
１の表面１ａが蒸発防止液３３ｂでコーテイング
される。 After the magnetic latent image is formed by the magnetic latent image forming means 2, the surface 1a of the magnetic recording medium 1 is coated with the evaporation prevention liquid 33b by the surface coating means 8.
磁気記録体１の表面１ａにコーテイングされた
蒸発防止液３３ｂは磁気記録体１の回転により容
器３１内の蒸発防止液層３３へ至り、一部は蒸発
防止液層３３と一体となり、蒸発防止液層３３の
補給となる。 The evaporation prevention liquid 33b coated on the surface 1a of the magnetic recording body 1 reaches the evaporation prevention liquid layer 33 in the container 31 due to the rotation of the magnetic recording body 1, and a part of it is integrated with the evaporation prevention liquid layer 33, and the evaporation prevention liquid 33b is coated on the surface 1a of the magnetic recording body 1. This serves as a replenishment for the layer 33.
残りはコーテイングされたまま磁性流体層３２
内へ至り、磁性流体層３２がコーテイング層の上
より磁気潜像部分の磁界勾配に引かれて吸着し、
この部分が顕像化される。蒸発防止液３３ｂが表
面コーテイング手段８により強制的にコーテイン
グされているため、表面１ａの傷や汚れの上にも
コーテイングが確実に行われており、現像時のム
ラやかぶり等が確実に防止される。 The remaining magnetic fluid layer 32 remains coated.
The magnetic fluid layer 32 is attracted by the magnetic field gradient of the magnetic latent image portion from above the coating layer and is attracted to the coating layer.
This part is visualized. Since the evaporation prevention liquid 33b is forcibly coated by the surface coating means 8, coating is reliably performed even on scratches and dirt on the surface 1a, and unevenness and fogging during development are reliably prevented. Ru.
次に、磁気潜像が形成された部分は転写工程へ
進み、転写手段４により記録媒体５へ転写が行わ
れる。表面コーテイング手段８により蒸発防止液
３３ｂが磁気記録体１の表面１ａに強制的にコー
テイングされているため、十分な量の蒸発防止液
のコーテイング層３３ａが記録媒体５に吸収され
て磁性流体粒３２ａの間に介在し、磁性流体のに
じみ防止がより確実に行われる。ここに、転写工
程でのにじみ防止のみを目的とする場合には、現
像容器３１内に磁性流体３２の蒸発及び酸化防止
のための蒸発防止液層３３を別段設けていなくて
も、表面コーテイング手段８のみ設けてあればよ
い。 Next, the portion on which the magnetic latent image has been formed proceeds to a transfer step, and is transferred onto the recording medium 5 by the transfer means 4. Since the anti-evaporation liquid 33b is forcibly coated on the surface 1a of the magnetic recording medium 1 by the surface coating means 8, a sufficient amount of the coating layer 33a of the anti-evaporation liquid is absorbed into the recording medium 5 and becomes magnetic fluid particles 32a. Intervening between the magnetic fluid and the magnetic fluid, the magnetic fluid is prevented from bleeding more reliably. Here, if the purpose is only to prevent bleeding in the transfer process, the surface coating means may be used even if the evaporation prevention liquid layer 33 for preventing evaporation and oxidation of the magnetic fluid 32 is not separately provided in the developer container 31. It is sufficient to provide only 8.
転写の後、磁気潜像が形成されている部分は、
消磁ヘツド６により消磁され、またクリーニング
手段７により磁気記録体１の表面１ａがクリーニ
ングされ、再び磁気潜像形成手段２により磁気潜
像が形成れ、上述の工程が繰り返される。 After transfer, the area where the magnetic latent image is formed is
The magnetic recording medium 1 is demagnetized by the demagnetizing head 6, the surface 1a of the magnetic recording medium 1 is cleaned by the cleaning means 7, a magnetic latent image is formed again by the magnetic latent image forming means 2, and the above-mentioned steps are repeated.
これらの間、現像容器３１内の磁性流体層３２
の表面の高さが変化したときは、液面測定器によ
り測定れて上下移動手段が駆動し、予備タンク９
が上下動する。これにより磁性流体層３２が所定
高さ範囲内にフイードバツクされる。これによ
り、磁気記録体１が磁性流体層３２に浸漬されて
いる時間を一定に保つこと等が可能となり、蒸発
防止液による磁性流体の蒸発及び酸素との反応防
止と共に、磁性流体３２による現像条件を一定に
保つことができ、常に一定状態の現像を得ること
が可能となる。 During this time, the magnetic fluid layer 32 inside the developer container 31
When the height of the surface of the reserve tank 9 changes, it is measured by the liquid level measuring device and the vertical moving means is driven.
moves up and down. This causes the magnetic fluid layer 32 to be fed back within a predetermined height range. This makes it possible to maintain a constant time during which the magnetic recording body 1 is immersed in the magnetic fluid layer 32, and to prevent evaporation of the magnetic fluid and reaction with oxygen by the evaporation prevention liquid, as well as development conditions using the magnetic fluid 32. can be kept constant, making it possible to always obtain a constant state of development.
本実施例は以上の構成であるため、磁気潜像形
成手段２により磁気潜像を形成した後、表面コー
テイング手段８により磁気記録体１の表面１ａが
蒸発防止液３３ｂでコーテイングされ、次に現像
容器３１内の蒸発防止液層３３及び磁性流体層３
２に浸漬し、次に転写手段４により記録媒体５に
転写され、次に消磁ヘツド６により消磁されまた
クリーニング手段７によりクリーニングされて、
再び磁気潜像形成手段３の位置に至る。またこれ
らの動作の間において、現像容器３１内の磁性流
体層３２の表面の高さが変化したときは、予備タ
ンク９が上下することにより所定高さ範囲内にフ
イードバツクされる。 Since the present embodiment has the above-described configuration, after a magnetic latent image is formed by the magnetic latent image forming means 2, the surface 1a of the magnetic recording medium 1 is coated with the evaporation prevention liquid 33b by the surface coating means 8, and then developed. Evaporation prevention liquid layer 33 and magnetic fluid layer 3 in container 31
2, then transferred to the recording medium 5 by the transfer means 4, then demagnetized by the degaussing head 6 and cleaned by the cleaning means 7,
The position of the magnetic latent image forming means 3 is reached again. Further, during these operations, when the height of the surface of the magnetic fluid layer 32 in the developer container 31 changes, the preliminary tank 9 moves up and down to provide feedback within a predetermined height range.
上記第１、第２の実施例では蒸発防止液層３３
は磁気記録体１の表面１ａに対して接触角が小さ
く磁気記録体１の表面１ａになじみやすいとした
が、接触角が大きく磁気記録体１の表面１ａにな
じみにくいものであつてもよい。この場合は、第
２図における蒸発防止液のコーテイング層３３ａ
は存在しないため、記録媒体５には磁性流体粒３
２ａのみが吸着する。 In the first and second embodiments, the evaporation prevention liquid layer 33
Although the material has a small contact angle with respect to the surface 1a of the magnetic recording body 1 and easily conforms to the surface 1a of the magnetic recording body 1, it may have a large contact angle and do not easily conform to the surface 1a of the magnetic recording body 1. In this case, the coating layer 33a of the evaporation prevention liquid in FIG.
There are no magnetic fluid particles 3 on the recording medium 5.
Only 2a is adsorbed.
また上記第１、第２実施例では磁気記録体１と
して磁気ドラムを用いたが可撓性を有する磁気ベ
ルト等を用いてもよい。また、磁気潜像形成手段
として磁気ヘツドを用いたがサーマルヘツド等を
用いてもよく、この場合は磁気記録体１の磁性体
層の構成も変化する。この他、本発明は種々の変
形例が可能である。 Further, in the first and second embodiments, a magnetic drum is used as the magnetic recording body 1, but a flexible magnetic belt or the like may also be used. Further, although a magnetic head is used as the magnetic latent image forming means, a thermal head or the like may also be used, and in this case, the structure of the magnetic layer of the magnetic recording medium 1 also changes. In addition, various modifications of the present invention are possible.
［効果］
本発明の磁気記録装置は、現像のために容器に
蓄えられた磁性流体層の上に蒸発防止液層が設け
てあるため、磁性流体層の溶媒の蒸発及び磁性流
体層の空気との反応が防止され、一定状態での現
像が可能である。[Effect] In the magnetic recording device of the present invention, since the evaporation prevention liquid layer is provided on the magnetic fluid layer stored in the container for development, the evaporation of the solvent in the magnetic fluid layer and the air in the magnetic fluid layer are prevented. reaction is prevented, and development can be carried out in a constant state.
また、磁気記録体を磁性流体層に浸漬する前
に、磁気記録体の表面を蒸発防止液層と同一の液
でコーテイングする手段を設けることにより、蒸
発防止液層の補給を行うことが可能である。 Furthermore, by providing a means for coating the surface of the magnetic recording body with the same liquid as the evaporation prevention liquid layer before immersing the magnetic recording body in the magnetic fluid layer, it is possible to replenish the evaporation prevention liquid layer. be.
さらに、蒸発防止液の磁気記録体の表面に対す
る接触角を小さくし、磁気記録体の表面になじま
せることにより、磁気記録装置の表面の傷や汚れ
等が蒸発防止液で覆われ、現像のムラやかぶり等
が防止され、また、記録媒体に吸収される蒸発防
止液を用いることにより、転写時のにじみが防止
される。 Furthermore, by reducing the contact angle of the evaporation prevention liquid to the surface of the magnetic recording medium and making it blend in with the surface of the magnetic recording medium, scratches and dirt on the surface of the magnetic recording device are covered with the evaporation prevention liquid, resulting in uneven development. In addition, by using an evaporation prevention liquid that is absorbed by the recording medium, bleeding during transfer is prevented.
第１図は本発明の第１実施例の模式的説明図、
第２図は第１図において転写される状態を模式的
に表した説明図、第３図は本発明の第２実施例の
模式的説明図である。
１……磁気記録体、１ａ……磁気記録体の表
面、２……磁気潜像形成手段、３……現像手段、
４……転写手段、５……記録媒体、８……表面コ
ーテイング手段、３１……容器、３２……磁性流
体層、３３……蒸発防止液層。
FIG. 1 is a schematic explanatory diagram of the first embodiment of the present invention,
FIG. 2 is an explanatory diagram schematically showing the transferred state in FIG. 1, and FIG. 3 is a schematic explanatory diagram of a second embodiment of the present invention. 1...Magnetic recording body, 1a...Surface of magnetic recording body, 2...Magnetic latent image forming means, 3...Developing means,
4... Transfer means, 5... Recording medium, 8... Surface coating means, 31... Container, 32... Magnetic fluid layer, 33... Evaporation prevention liquid layer.
Claims (1)
形成する手段と、上記磁気記録体を磁性流体層に
浸漬することにより上記磁気潜像を顕像化する現
像手段と、顕像化した磁性流体の像を記録媒体へ
転写する転写手段とを有する磁気記録装置におい
て、 上記磁性流体層は容器に蓄えられたものであ
り、 上記容器に蓄えられた上記磁性流体層の上に、
上記磁性流体層の蒸発防止のための液層が設けて
ある ことを特徴とする磁気記録装置。 ２ 請求孔１において、上記磁気記録体を上記磁
性流体層に浸漬する前に、上記磁気記録体の表面
を上記蒸発防止液層と同一の液でコーテイングす
る手段が設けてある ことを特徴とする磁気記録装置。 ３ 請求項１又は請求項２において、上記蒸発防
止液層に用いる蒸発防止液は、上記磁気記録体の
表面に対して接触角が小さく、上記磁気記録体の
表面になじむものであることを特徴とする磁気記
録装置。[Scope of Claims] 1. A magnetic recording body, means for forming a magnetic latent image on the magnetic recording body, and developing means for visualizing the magnetic latent image by immersing the magnetic recording body in a magnetic fluid layer. and a transfer means for transferring a visualized image of the magnetic fluid to a recording medium, wherein the magnetic fluid layer is stored in a container, and the magnetic fluid layer stored in the container is On top of the,
A magnetic recording device characterized in that a liquid layer is provided to prevent evaporation of the magnetic fluid layer. 2. In the claim hole 1, a means is provided for coating the surface of the magnetic recording body with the same liquid as the evaporation prevention liquid layer before the magnetic recording body is immersed in the magnetic fluid layer. Magnetic recording device. 3. In claim 1 or 2, the evaporation prevention liquid used in the evaporation prevention liquid layer has a small contact angle with the surface of the magnetic recording body and is compatible with the surface of the magnetic recording body. Magnetic recording device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34178889A JPH03203761A (en) | 1989-12-29 | 1989-12-29 | Magnetic recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34178889A JPH03203761A (en) | 1989-12-29 | 1989-12-29 | Magnetic recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03203761A JPH03203761A (en) | 1991-09-05 |
| JPH0587834B2 true JPH0587834B2 (en) | 1993-12-20 |
Family
ID=18348766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34178889A Granted JPH03203761A (en) | 1989-12-29 | 1989-12-29 | Magnetic recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03203761A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007263812A (en) * | 2006-03-29 | 2007-10-11 | Toppan Printing Co Ltd | Reactor vessel |
| JP2009151006A (en) * | 2007-12-19 | 2009-07-09 | Fuji Xerox Co Ltd | Magnetic toner, liquid developer, process cartridge, and image forming apparatus |
| JP2009271132A (en) * | 2008-04-30 | 2009-11-19 | Fuji Xerox Co Ltd | Liquid developing agent, process cartridge, and image forming device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009020409A (en) * | 2007-07-13 | 2009-01-29 | Fuji Xerox Co Ltd | Magnetic latent image carrier, process cartridge, and image forming apparatus |
| JP2014113763A (en) * | 2012-12-11 | 2014-06-26 | Seibu Polymer Corp | Continuous normal pressure vulcanization method |
| JP6124281B2 (en) * | 2012-12-19 | 2017-05-10 | 西武ポリマ化成株式会社 | Method for continuous vulcanization of rubber products having hollow portions |
-
1989
- 1989-12-29 JP JP34178889A patent/JPH03203761A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007263812A (en) * | 2006-03-29 | 2007-10-11 | Toppan Printing Co Ltd | Reactor vessel |
| JP2009151006A (en) * | 2007-12-19 | 2009-07-09 | Fuji Xerox Co Ltd | Magnetic toner, liquid developer, process cartridge, and image forming apparatus |
| JP2009271132A (en) * | 2008-04-30 | 2009-11-19 | Fuji Xerox Co Ltd | Liquid developing agent, process cartridge, and image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03203761A (en) | 1991-09-05 |
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