JPH0139587B2 - - Google Patents
Info
- Publication number
- JPH0139587B2 JPH0139587B2 JP57042550A JP4255082A JPH0139587B2 JP H0139587 B2 JPH0139587 B2 JP H0139587B2 JP 57042550 A JP57042550 A JP 57042550A JP 4255082 A JP4255082 A JP 4255082A JP H0139587 B2 JPH0139587 B2 JP H0139587B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- layer
- latent image
- thermal transfer
- master material
- 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
- 238000000034 method Methods 0.000 claims description 15
- 238000000859 sublimation Methods 0.000 claims description 6
- 230000008022 sublimation Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 29
- 239000000696 magnetic material Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000001454 recorded image Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- -1 phenol compound Chemical class 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/16—Layers for recording by changing the magnetic properties, e.g. for Curie-point-writing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photoreceptors In Electrophotography (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、磁性的に画像の記録を行う磁気写真
記録装置に使用される磁気潜像形成方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method for forming a magnetic latent image used in a magnetic photographic recording apparatus that magnetically records images.
「従来の技術」
磁気写真記録装置では、磁気写真用マスタ材上
に磁気潜像を形成し、これを磁性トナーで現像し
て画像の記録を行つている。磁気写真用マスタ材
としては、従来から通常の磁気テープあるいは磁
気ドラムが使用されている。ところがこれらの磁
気写真用マスタ材では、浮遊磁界によつて磁気潜
像が破壊され、再び記録操作を行わなければ、こ
れを復元させることができないという欠点があつ
た。"Prior Art" In a magnetic photographic recording apparatus, a magnetic latent image is formed on a magnetic photographic master material, and this is developed with magnetic toner to record an image. Conventionally, ordinary magnetic tapes or magnetic drums have been used as master materials for magnetic photography. However, these magnetic photographic master materials have the disadvantage that the magnetic latent image is destroyed by the stray magnetic field and cannot be restored unless the recording operation is performed again.
本発明はこのような事情に鑑み、浮遊磁界によ
つて磁気潜像が破壊されてもこれを容易に復元す
ることのできる磁気潜像形成方法を提供すること
をその目的とする。 In view of these circumstances, an object of the present invention is to provide a method for forming a magnetic latent image that can easily restore the magnetic latent image even if it is destroyed by a stray magnetic field.
「問題点を解決するための手段」
本発明の磁気潜像形成方法は、(i)磁性体層を一
様に磁化する工程と、(ii)加熱により流動化あるい
は昇華する物質を前記磁性体層上にほぼ均一に塗
布してなる熱流動昇華層を選択的に加熱して加熱
部分を除去し磁気潜像を形成する工程とを備えて
いる。"Means for Solving the Problems" The magnetic latent image forming method of the present invention includes (i) a step of uniformly magnetizing a magnetic material layer, and (ii) a step of applying a substance that is fluidized or sublimated by heating to the magnetic material. The method includes the step of selectively heating a thermofluidic sublimation layer formed by coating the layer substantially uniformly and removing the heated portion to form a magnetic latent image.
すなわち本発明によれば熱流動昇華層を加熱に
よつて選択的に除去するので磁性体層上における
熱流動昇華層の厚さが画像パターンに応じて変化
することになる。これにより、いつでも磁性体層
を一様に磁化することで、磁気潜像を容易に復元
させることができる。 That is, according to the present invention, since the thermofluidic sublimation layer is selectively removed by heating, the thickness of the thermofluidic sublimation layer on the magnetic layer changes depending on the image pattern. Thereby, by uniformly magnetizing the magnetic layer at any time, the magnetic latent image can be easily restored.
「実施例」 以下実施例につき本発明を詳細に説明する。"Example" The present invention will be explained in detail with reference to Examples below.
第１図は本発明の第１の実施例で使用される磁
気写真用マスタ材を示したものである。磁気写真
用マスタ材１は、ベース層１１の上に磁性層１２
と熱転写媒体層１３をこの順序に形成した３層構
造となつている。ベース層１１は磁性層１２の支
持体であり、プラスチツクフイルム等の可撓性材
料で作られている。磁性層１２は、γFe3O3，
Fe3O4，CrO2，Co被着形酸化鉄等の磁性材料を
ベース層１１上に塗布または蒸着したもので、そ
の厚さは数μから数十μmに設定されている。最
上層の熱転写媒体層１３は、60〜80度Ｃの温度で
流動化あるいは昇華する熱転写性の材料を、ホツ
トメトル法等の手法により約100μmの厚さに塗布
したものである。熱転写性の材料としては、例え
ばカウナバワツクス、エステルワツクスおよび潤
滑油の混合物が使用される。これらの混合物の配
合割合を変化させると、その融点を前記60〜80度
Ｃの間で調整することができる。この混合物にレ
ジンを適量添加すると、熱転写媒体層１３の堅牢
性を向上させることができる。 FIG. 1 shows a magnetic photographic master material used in a first embodiment of the present invention. A magnetic photographic master material 1 has a magnetic layer 12 on a base layer 11.
and thermal transfer medium layer 13 are formed in this order to form a three-layer structure. Base layer 11 is a support for magnetic layer 12 and is made of a flexible material such as plastic film. The magnetic layer 12 is made of γFe 3 O 3 ,
A magnetic material such as Fe 3 O 4 , CrO 2 , Co-coated iron oxide, etc. is coated or vapor-deposited on the base layer 11, and its thickness is set from several μm to several tens of μm. The uppermost thermal transfer medium layer 13 is made of a thermal transfer material that fluidizes or sublimates at a temperature of 60 to 80 degrees Celsius, and is coated to a thickness of about 100 μm by a method such as a hot mettle method. As heat-transferable materials, for example mixtures of Kaunaba wax, ester wax and lubricating oil are used. By changing the blending ratio of these mixtures, the melting point can be adjusted within the range of 60 to 80 degrees Celsius. Adding an appropriate amount of resin to this mixture can improve the robustness of the thermal transfer medium layer 13.
第２図はこの磁気写真用マスタ材を使用した磁
気写真装置の潜像形成の様子を示したものであ
る。 FIG. 2 shows how a latent image is formed in a magnetic photographic apparatus using this magnetic photographic master material.
磁気写真用マスタ材１はその熱転写媒体層１３
が記録紙（普通紙）２と重ね合わされた状態で潜
像形成部Ａに送られる。潜像形成部Ａでは、圧力
ローラ３が磁気写真用マスタ材のベース層１１に
圧接し、記録紙２の背面をサーマルヘツド４の発
熱要素列４Ａに押しつける。この状態で圧力ロー
ラ３が矢印方向に回転し、磁気写真用マスタ材１
と記録紙２がこれに従動して副走査される。この
ときサーマルヘツド４がラスタスキヤン方式でラ
インごとに駆動される。発熱要素列４Ａのうち通
電した箇所の発熱要素が選択的に発熱し、熱転写
媒体層１３の対向する部位を加熱する。これによ
り流動化あるいは昇華した熱転写媒体は記録紙２
の繊維中に一部侵入し、温度の低下と共に固化す
る。この後、磁気写真用マスタ材１と記録紙２が
何らかの手段で分離されると、熱転写媒体層１３
のうち一度流動化あるいは昇華した部分の熱転写
媒体１３１のみが記録紙２側へ転写され、他の部
分１３２は磁気写真用マスタ材１の磁性層１２上
に残存する。すなわち磁気写真用マスタ材１上に
は、磁性層１２の露出の有無による画像パターン
が形成される。 The magnetic photographic master material 1 has its thermal transfer medium layer 13
is sent to the latent image forming section A in a superimposed state with the recording paper (plain paper) 2. In the latent image forming section A, the pressure roller 3 comes into pressure contact with the base layer 11 of the magnetic photographic master material, and presses the back surface of the recording paper 2 against the heat generating element array 4A of the thermal head 4. In this state, the pressure roller 3 rotates in the direction of the arrow, and the magnetic photographic master material 1
Following this, the recording paper 2 is sub-scanned. At this time, the thermal head 4 is driven line by line in a raster scan manner. Among the heat generating element rows 4A, the heat generating elements at the energized locations selectively generate heat and heat the opposing regions of the thermal transfer medium layer 13. The thermal transfer medium fluidized or sublimated by this is the recording paper 2.
It partially penetrates into the fibers of the fibers and solidifies as the temperature decreases. Thereafter, when the magnetic photographic master material 1 and the recording paper 2 are separated by some means, the thermal transfer medium layer 13
Only the portion of the thermal transfer medium 131 that has once been fluidized or sublimated is transferred to the recording paper 2 side, and the other portion 132 remains on the magnetic layer 12 of the magnetophotographic master material 1. That is, an image pattern is formed on the magnetic photographic master material 1 depending on whether the magnetic layer 12 is exposed or not.
磁性層１２はこのような潜像形成作業の前に、
正弦波状に磁化されている。磁気の強さは距離の
二乗に反比例して弱まるので、残存した熱転写媒
体層１３の表面部分は磁性層１２の表面部分より
も格段に磁気が弱い。従つて前記画像パターン
は、磁気潜像のパターンということもできる。こ
の磁気潜像のパターンを磁気ブラシ現像すると、
磁性トナーが磁性層１２の露出した部分のみに吸
着する。従つてこれを磁気的にあるいは静電的に
記録紙へ転写させた後定着すれば、磁気写真を作
成することができる。 Before the magnetic layer 12 is subjected to such a latent image forming operation,
It is magnetized in a sinusoidal manner. Since the strength of magnetism weakens in inverse proportion to the square of the distance, the remaining surface portion of the thermal transfer medium layer 13 has much weaker magnetism than the surface portion of the magnetic layer 12. Therefore, the image pattern can also be called a pattern of a magnetic latent image. When this magnetic latent image pattern is developed with a magnetic brush,
The magnetic toner is attracted only to the exposed portion of the magnetic layer 12. Therefore, by magnetically or electrostatically transferring this to recording paper and then fixing it, a magnetic photograph can be created.
この磁気写真用マスタ材１では、浮遊磁界によ
り磁気潜像が破壊されても、熱転写媒体による画
像パターンが残存されている限り、磁気潜像を復
元させることができる。すなわち熱転写媒体層１
３の側から磁性層１２を一様に磁化すれば、磁気
潜像のパターンが復元される。従つて静電転写の
みでなく、磁気転写を何ら支障なく行うことがで
きる。なおこの磁気写真用マスタ材１は、ホツト
メルト法等を用いて熱転写媒体層を一様に再塗布
することができ、複数の原稿について繰り返し使
用することができる。 In this magnetic photographic master material 1, even if the magnetic latent image is destroyed by a stray magnetic field, it can be restored as long as the image pattern formed by the thermal transfer medium remains. That is, thermal transfer medium layer 1
If the magnetic layer 12 is uniformly magnetized from the side 3, the pattern of the magnetic latent image is restored. Therefore, not only electrostatic transfer but also magnetic transfer can be performed without any problem. The magnetic photographic master material 1 can be uniformly recoated with a thermal transfer medium layer using a hot melt method or the like, and can be used repeatedly for a plurality of originals.
第３図は本発明の第２の実施例で使用される磁
気写真用マスタ材を表わしたものである。この磁
気写真用マスタ材５では、ベース層１１の両面に
磁性層１２と熱転写媒体層１３を形成している。
各層の厚さおよび組成は先の実施例のものと同一
でよい。この磁気写真用マスタ材では、各面にサ
ーマルヘツドで磁気潜像を形成することができ
る。本発明の磁気潜像形成方法で使用される磁気
写真用マスタ材の磁性層はそれ自体磁化パターン
をもつ必要がないので、磁性層が所定の強度を有
するものであれば、ベース層１１を省略すること
も可能である。 FIG. 3 shows a magnetic photographic master material used in a second embodiment of the present invention. In this magnetic photographic master material 5, a magnetic layer 12 and a thermal transfer medium layer 13 are formed on both sides of a base layer 11.
The thickness and composition of each layer may be the same as in the previous example. With this master material for magnetic photography, a magnetic latent image can be formed on each surface using a thermal head. Since the magnetic layer of the magnetographic master material used in the magnetic latent image forming method of the present invention does not need to have a magnetization pattern itself, the base layer 11 may be omitted if the magnetic layer has a predetermined strength. It is also possible to do so.
第４図は本発明の第３の実施例で使用される磁
気写真用マスタを表わしたものである。この磁気
写真用マスタ材６では、ベース層６１に感熱紙を
使用している。ベース層６１としては、例えば常
温で発色反応をしないロイコ染料とフエノール化
合物を結合剤中に分散させたものが使用される。
この磁気写真用マスタ材６を使用すれば、１つの
サーマルヘツドで磁気潜像と感熱記録方式による
記録画の双方を得ることができる。従つて磁気写
真用マスタ材を保管する等の場合に、その裏面に
表わされた記録画で内容を容易に確認することが
できる。 FIG. 4 shows a magnetic photographic master used in a third embodiment of the present invention. In this magnetic photographic master material 6, thermal paper is used for the base layer 61. The base layer 61 is made of, for example, a binder in which a leuco dye and a phenol compound, which do not undergo a coloring reaction at room temperature, are dispersed.
By using this magnetic photographic master material 6, it is possible to obtain both a magnetic latent image and a recorded image by a thermosensitive recording method with one thermal head. Therefore, when storing a master material for magnetic photography, the contents can be easily confirmed from the recorded image displayed on the back side.
なお実施例では熱転写媒体層に磁性体を混入し
ない場合について説明したが、磁性体を混入し、
磁性層と磁化状態が反転した比較的弱い磁化状態
に保存しておいても良いことはもちろんである。 In the example, the case where no magnetic material is mixed in the thermal transfer medium layer is explained, but it is possible to mix a magnetic material into the thermal transfer medium layer.
Of course, it may be stored in a relatively weak magnetization state in which the magnetization state is reversed with that of the magnetic layer.
「発明の効果」
以上説明したように本発明の磁気潜像形成方法
によれば、この方法に用いる磁性体に常温よりも
わずかに高い温度で磁化状態が消滅する特性（熱
磁気特性）を必要としない。従つて磁性体を広範
囲に選択できるという利点がある。また本発明で
は例えばサーマルヘツドを用いて磁気潜像を作成
するので、磁気ヘツドを用いて磁気潜像を作成す
る従来の方法よりも、高密度の画像が得やすく、
また長尺ライン書き込み用のヘツドの作製が容易
であるという利点もある。また本発明によれば熱
流動昇華層を再塗布することにより磁気潜像を再
形成することができるという効果もある。"Effects of the Invention" As explained above, the magnetic latent image forming method of the present invention requires the magnetic material used in this method to have a property (thermomagnetic property) in which the magnetized state disappears at a temperature slightly higher than room temperature. I don't. Therefore, there is an advantage that magnetic materials can be selected from a wide range. In addition, since the present invention uses, for example, a thermal head to create a magnetic latent image, it is easier to obtain a high-density image than with the conventional method of creating a magnetic latent image using a magnetic head.
Another advantage is that it is easy to manufacture a head for writing long lines. Further, according to the present invention, the magnetic latent image can be re-formed by re-applying the thermofluidic sublimation layer.
第１図は本発明の第１の実施例で使用する磁気
写真用マスタ材の構造を示す断面図、第２図はこ
の磁気写真用マスタ材を用いた磁気潜像形成方法
の原理を示す原理図、第３図は本発明の第２の実
施例で使用する磁気写真用マスタ材の構造を示す
断面図、第４図は本発明の第３の実施例で使用す
る磁気写真用マスタ材の構造を示す断面図であ
る。
１，５，６……磁気写真用マスタ材、１１，６
１……ベース層、１２……磁性層、１３……熱転
写媒体層。
FIG. 1 is a sectional view showing the structure of a magnetic photographic master material used in the first embodiment of the present invention, and FIG. 2 is a principle showing the principle of a magnetic latent image forming method using this magnetic photographic master material. Figure 3 is a sectional view showing the structure of a magnetic photographic master material used in the second embodiment of the present invention, and Figure 4 is a cross-sectional view showing the structure of the magnetic photographic master material used in the third embodiment of the present invention. FIG. 3 is a cross-sectional view showing the structure. 1, 5, 6... Master material for magnetic photography, 11, 6
1...Base layer, 12...Magnetic layer, 13...Thermal transfer medium layer.
Claims (1)
り流動化あるいは昇華する物質を前記磁性体層上
にほぼ均一に塗布してなる熱流動昇華層を選択的
に加熱して加熱部分を除去し磁気潜像を形成する
工程とを具備し、熱流動昇華層の厚さの変化に応
じて磁気潜像を形成することを特徴とする磁気潜
像形成方法。1. A process of uniformly magnetizing a magnetic layer, and selectively heating a thermofluidic sublimation layer, which is formed by applying a substance that fluidizes or sublimates on the magnetic layer almost uniformly on the magnetic layer, and removing the heated portion. 1. A method for forming a magnetic latent image, the method comprising: forming a magnetic latent image according to changes in the thickness of a thermofluidic sublimation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4255082A JPS58160958A (en) | 1982-03-19 | 1982-03-19 | Master material used for magnetic photography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4255082A JPS58160958A (en) | 1982-03-19 | 1982-03-19 | Master material used for magnetic photography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58160958A JPS58160958A (en) | 1983-09-24 |
| JPH0139587B2 true JPH0139587B2 (en) | 1989-08-22 |
Family
ID=12639158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4255082A Granted JPS58160958A (en) | 1982-03-19 | 1982-03-19 | Master material used for magnetic photography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58160958A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5232561A (en) * | 1975-09-05 | 1977-03-11 | Nippon Electric Co | Method of producing switch boards |
| JPS5240207A (en) * | 1975-09-25 | 1977-03-29 | Mitsubishi Heavy Ind Ltd | High effeciency internal combustion engine |
-
1982
- 1982-03-19 JP JP4255082A patent/JPS58160958A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5232561A (en) * | 1975-09-05 | 1977-03-11 | Nippon Electric Co | Method of producing switch boards |
| JPS5240207A (en) * | 1975-09-25 | 1977-03-29 | Mitsubishi Heavy Ind Ltd | High effeciency internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58160958A (en) | 1983-09-24 |
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