JPH088824Y2 - Thermal recorder - Google Patents
Thermal recorderInfo
- Publication number
- JPH088824Y2 JPH088824Y2 JP1989044710U JP4471089U JPH088824Y2 JP H088824 Y2 JPH088824 Y2 JP H088824Y2 JP 1989044710 U JP1989044710 U JP 1989044710U JP 4471089 U JP4471089 U JP 4471089U JP H088824 Y2 JPH088824 Y2 JP H088824Y2
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- recording paper
- recording
- convex portion
- thermal
- 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
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Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、記録紙上の付着物に起因する発熱体劣化を
軽減し、ラベルプリンターに代表されるようなヘビーデ
ューティな使用に耐え得る高耐久な熱記録装置に関す
る。[Detailed Description of the Invention] [Industrial field of application] The present invention reduces the deterioration of the heating element due to the deposits on the recording paper, and has a high durability that can withstand heavy duty use as represented by a label printer. Thermal recording device.
本考案は、発熱体に通電し発熱させ、これにより記録
紙を発色させることにより感熱記録を行う熱記録装置に
関するものであって、熱記録装置として、発熱体の位置
に対して記録紙の相対移動方向と逆の側に、発熱体アレ
イと平行に凸部を設け、少なくとも前記凸部及び、前記
発熱体上に保護膜を有する構造のサーマルヘッドであ
り、前記凸部及び、前記発熱体アレイが記録紙と摺動せ
しめるように熱記録装置上に配置する構造とする。The present invention relates to a thermal recording device for conducting heat-sensitive recording by energizing a heating element to generate heat, thereby causing the recording sheet to develop color, and as a thermal recording device, the recording sheet is positioned relative to the position of the heating element. A thermal head having a structure in which a convex portion is provided in parallel with the heating element array on the side opposite to the moving direction, and at least the convex portion and a protective film on the heating element are provided, wherein the convex portion and the heating element array are provided. The structure is arranged on the thermal recording device so that it can slide on the recording paper.
このような構造とすることにより、前記凸部での前記
記録紙との押圧力が上がり、記録紙上の付着物を予め、
摩滅することができ、発熱体へのキズをつきにくくする
ようにしたものである。With such a structure, the pressing force of the convex portion against the recording paper is increased, and the adhered matter on the recording paper is
It can be worn away and is less likely to scratch the heating element.
従来の熱記録装置では、第４図に示すような、押圧ロ
ーラとサーマルヘッドを記録紙を介して圧接する構造で
あり、特に記録紙上の付着物を取り除くような構造はと
っていなかった。A conventional thermal recording apparatus has a structure in which a pressing roller and a thermal head are pressed against each other via recording paper, as shown in FIG. 4, and a structure for removing deposits on the recording paper is not particularly adopted.
前記付着物によるキズに対して従来の熱記録装置で
は、サーマルヘッドの耐久性に多くを依存していた。In the conventional thermal recording apparatus, the durability of the thermal head largely depends on the scratches caused by the deposits.
記録紙上の付着物などによる発熱体へのキズに対し
て、従来のサーマルヘッドでは、 （１）保護膜の膜硬度を上げ、キズを入りにくくする （２）保護膜の膜厚を大きくして、キズによる発熱体へ
の影響を少なくする （３）厚膜技術を利用したサーマルヘッドとして、キズ
による発熱体への影響を少なくする というような方法が一般に用いられていたにすぎない。In the conventional thermal head, against the scratches on the heating element due to the adhered matter on the recording paper, (1) increase the film hardness of the protective film to prevent scratches. (2) increase the film thickness of the protective film. (3) As a thermal head using the thick film technology, a method of reducing the effect of scratches on the heating element is generally used.
サーマルヘッドの保護膜は発熱体の酸化作用による劣
化の防止及び、発熱体と記録紙との摺動による発熱体摩
耗、発熱体のキズによる劣化の防止等を主な目的として
いる。The main purpose of the protective film of the thermal head is to prevent deterioration of the heating element due to oxidation, and to prevent wear of the heating element due to sliding of the heating element and recording paper and deterioration of the heating element due to scratches.
保護膜上にキズが入ることにより、発熱体の酸化作用
による劣化の防止効果が薄れ、発熱体の劣化を促進して
しまい、発熱体寿命低下の原因となる。When the scratches are formed on the protective film, the effect of preventing the deterioration of the heating element due to the oxidation action is weakened, and the deterioration of the heating element is promoted, which causes the shortening of the life of the heating element.
キズの原因がおもに記録紙上の付着物によるため、該
付着物による影響を減らすことが、発熱体寿命の低下防
止として重要である。Since the cause of the scratches is mainly due to the deposits on the recording paper, it is important to reduce the influence of the deposits in order to prevent the shortening of the life of the heating element.
従来技術（１）においては、保護膜の膜応力の問題が
あり、キズの影響が無視できるような保護膜膜厚を得る
ことが難しい。In the prior art (1), there is a problem of film stress of the protective film, and it is difficult to obtain a protective film thickness such that the influence of scratches can be ignored.
従来技術（２）においては、保護膜膜厚が記録紙の印
字濃度に影響するため、単純に保護膜厚みを増やすこと
は、印字品位の点で問題がある。In the prior art (2), since the film thickness of the protective film affects the print density of the recording paper, simply increasing the thickness of the protective film has a problem in print quality.
従来技術（３）においては、もともと印字品位の点で
問題のある製造方法であり、解決策となり得ていない。The prior art (3) is a manufacturing method which originally has a problem in terms of printing quality and cannot be a solution.
本考案の目的は、サーマルヘッドの寿命低下の原因と
なる記録紙上の付着物によるキズを予め摩滅させること
により、記録紙の発色特性を低下させることなく、発熱
体寿命を改善することにある。It is an object of the present invention to improve the life of the heating element by preliminarily abrading the scratches due to the deposits on the recording paper, which cause the shortening of the life of the thermal head, without deteriorating the coloring property of the recording paper.
その手段として、発熱体の位置に対して記録紙の相対
移動方向と逆の側に、前記発熱体アレイと平行に凸部を
設け、前記凸部を保護膜のような膜硬度の高い材料でコ
ートし、前記凸部に記録紙を介して押圧力をかける。As a means thereof, a convex portion is provided in parallel with the heating element array on the side opposite to the relative movement direction of the recording paper with respect to the position of the heating element, and the convex portion is made of a material having high film hardness such as a protective film. The coating is applied, and pressing force is applied to the convex portion via the recording paper.
〔作用〕 上記した手段により、前記凸部上の保護膜と前記記録
紙上の付着物の間で強大な摩擦力が生じ、この摩擦力を
利用して前記記録紙上の付着物を予め摩滅させ、該付着
物が前記発熱体部に到達するころには、発熱体へ影響し
ないレベルまで該付着物を小さくすることができる。[Operation] By the means described above, a strong frictional force is generated between the protective film on the convex portion and the deposit on the recording paper, and the deposit on the recording paper is abraded in advance by utilizing this frictional force. By the time the deposit reaches the heating element, the deposit can be reduced to a level at which it does not affect the heating element.
上記効果により、印字品位を低下させることなく、寿
命特性の高いサーマルヘッド及び、熱記録装置を提供す
ることができる。Due to the above effects, it is possible to provide a thermal head and a thermal recording device having high life characteristics without degrading printing quality.
〔実施例１〕 以下本考案の実施例を第１図により、説明する。[Embodiment 1] An embodiment of the present invention will be described below with reference to FIG.
第１図（Ａ）は、本発明の熱記録装置の状態を模式的
に、断面図として示したものである。FIG. 1A is a schematic sectional view showing the state of the thermal recording apparatus of the present invention.
円柱型の押圧ローラ３により、発熱体部２及び、凸部
５を記録紙４を挟んで同時に押圧する。The columnar pressing roller 3 simultaneously presses the heating element portion 2 and the convex portion 5 while sandwiching the recording paper 4.
ここで、凸部５を、凸部５と押圧ローラ３との接触面
積をできるだけ多くすることと、押圧ローラ３の変形に
よる発熱体部２及び、凸部５での押圧力の低下を防ぐた
めに、凸部５をなだらかな山型に形成するとより良い。Here, in order to increase the contact area between the convex portion 5 and the pressing roller 3 as much as possible, and to prevent a decrease in pressing force at the heating element portion 2 and the convex portion 5 due to deformation of the pressing roller 3. It is better to form the convex portion 5 in a gentle mountain shape.
また、凸部５及び、発熱体部２において良好な押圧力
を得るためには、発熱体部２と凸部５との距離を0.5mm
〜3.0mm以内とし、凸部５の高さを10μｍ〜200μｍ、凸
部の幅を3.0mm以内とすることが望ましい。Further, in order to obtain a good pressing force in the convex portion 5 and the heating element portion 2, the distance between the heating element portion 2 and the convex portion 5 is 0.5 mm.
It is desirable that the height of the protrusions 5 is within 10 mm to 200 μm, and the width of the protrusions is within 3.0 mm.
サーマルヘッドの製法を上記寸法内とすることによ
り、押圧ローラ径の選択の幅が広がり、5mm〜50mm以内
の押圧ローラであれば、凸部５及び、発熱体部２に十分
な押圧力を与えることができる。By setting the manufacturing method of the thermal head within the above range, the range of selection of the pressing roller diameter is expanded, and if the pressing roller is within 5 mm to 50 mm, a sufficient pressing force is applied to the convex portion 5 and the heating element portion 2. be able to.
次に、第１図で示した本発明の実施例の製造方法につ
いて説明する。Next, a manufacturing method of the embodiment of the present invention shown in FIG. 1 will be described.
セラミック基板１上に全面、又は発熱体部２を含む一
部に厚さ10μｍ〜100μｍのガラスペーストを印刷塗布
し、発熱体２の位置に対して記録紙４の相対移動方向と
逆の側に、発熱体部２と平行の凸部５を厚さ10μｍ〜20
0μｍのガラスペーストで印刷塗布し、このガラスの軟
化温度よりも十分に高い温度で熱処理する。A glass paste having a thickness of 10 μm to 100 μm is printed and applied on the entire surface of the ceramic substrate 1 or a part including the heating element portion 2 and is applied on the side opposite to the relative movement direction of the recording paper 4 with respect to the position of the heating element 2. , The convex portion 5 parallel to the heating element portion 2 has a thickness of 10 μm to 20
A glass paste of 0 μm is applied by printing, and heat treatment is performed at a temperature sufficiently higher than the softening temperature of this glass.
この後、セラミック基板全面にTa2O5などにより、ア
ンダーコート層を形成し、発熱体・給電体と順次形成す
る。保護膜は、発熱体部２と凸部５を含む形でTa2O5、S
iO2、SiCなどで形成する。このような構造のサーマルヘ
ッドを熱記録装置上に押圧ローラ３を凸部５及び、発熱
体部２に十分に押圧するように配置する。（一般には、
発熱体部に押圧ローラの中心がくるように配置すること
が多い。） 第５図は、このような構成のサーマルヘッドによる押
圧力の分布を示した図である。After that, an undercoat layer is formed on the entire surface of the ceramic substrate with Ta 2 O 5 or the like, and the heating element and the power feeding element are sequentially formed. The protective film includes Ta 2 O 5 , S in a form including the heating element portion 2 and the convex portion 5.
It is formed of iO 2 , SiC or the like. The thermal head having such a structure is arranged on the thermal recording device so that the pressing roller 3 is sufficiently pressed against the convex portion 5 and the heating element portion 2. (In general,
In many cases, the pressing roller is placed so that the center of the pressing roller is located at the heating element. ) FIG. 5 is a diagram showing the distribution of the pressing force by the thermal head having such a configuration.
第５図により、凸部５から発熱体部２までフラットな
押圧力を持つことがわかり、記録紙４上の付着物６を発
熱体部２までに十分摩滅させることができる。It can be seen from FIG. 5 that a flat pressing force is exerted from the convex portion 5 to the heating element portion 2, and the deposit 6 on the recording paper 4 can be sufficiently abraded by the heating element portion 2.
本構成のサーマルヘッドにおいて凸部５で予め付着物
６を摩滅させるために、凸部５における付着物６による
キズの影響が心配となるが、キズの入る箇所が給電体部
であり、発熱体部に較べ、まったく問題とならない。In the thermal head of this configuration, since the protrusions 5 preliminarily wear away the deposits 6, the influence of the deposits 6 on the protrusions 5 may be affected. However, the location of the scratches is the power supply unit and the heating element. No problem at all compared to the club.
本実施例をもとに、製作された熱記録装置における耐
久テストの結果を第７図に示す。FIG. 7 shows the result of the durability test of the thermal recording apparatus manufactured based on this example.
この結果からも給電体部のキズがまったく問題となら
ないことがわかる。From this result, it can be seen that the flaw of the power feeding body does not pose any problem.
〔実施例２〕 以下本考案の他の実施例を第２図により、説明する。[Embodiment 2] Another embodiment of the present invention will be described below with reference to FIG.
第２図（Ａ）は本発明の熱記録装置の状態を模式的
に、断面図として示したものである。FIG. 2A is a schematic sectional view showing the state of the thermal recording apparatus of the present invention.
円柱型の押圧ローラ３により、発熱体部２及び、凸部
５を記録紙４を挟んで同時に押圧する。The columnar pressing roller 3 simultaneously presses the heating element portion 2 and the convex portion 5 while sandwiching the recording paper 4.
ここで、凸部５と発熱体部２の高さを同じにし、且
つ、凸部５と発熱体部２に均等に押圧するように押圧ロ
ーラ３を配置する。（凸部５と発熱体部２との中心に配
置） また、凸部５及び、発熱体部２において良好な押圧力
を得るためには、発熱体アレイ２と凸部５との距離を0.
5mm〜3.0mm以内とし、発熱体部２及び、凸部５の高さを
10μｍ〜200μｍ、発熱体部２及び、凸部の幅を3.0mm以
内とすることが望ましい。Here, the protrusions 5 and the heating element portion 2 have the same height, and the pressing roller 3 is arranged so as to uniformly press the protrusions 5 and the heating element portion 2. (Disposed at the center between the convex portion 5 and the heating element portion 2) In order to obtain a favorable pressing force in the convex portion 5 and the heating element portion 2, the distance between the heating element array 2 and the convex portion 5 is set to 0. .
The height of the heating element 2 and the convex portion 5 should be within 5 mm to 3.0 mm.
It is desirable that the width of the heating element portion 2 and the convex portion is 10 μm to 200 μm and within 3.0 mm.
サーマルヘッドの製法を上記寸法内とすることによ
り、押圧ローラ３の径が凸部５と発熱体部２との距離以
上であれば、押圧ローラ３の径に対する制約をなくすこ
とができる。By setting the manufacturing method of the thermal head to be within the above-described size, if the diameter of the pressing roller 3 is equal to or larger than the distance between the convex portion 5 and the heating element portion 2, the restriction on the diameter of the pressing roller 3 can be eliminated.
次に、第２図で示した本発明の実施例の製造方法につ
いて説明する。Next, a manufacturing method of the embodiment of the present invention shown in FIG. 2 will be described.
セラミック基板１上に全面に厚さ10μｍ〜100μｍの
ガラスペーストを印刷塗布し（セラミック基板面の平滑
性が十分であれば、ガラスペーストを塗布する必要はな
い）、発熱体２の位置に対して記録紙４の相対移動方向
と逆の側に、発熱体部２と平行の凸部５と発熱体部２を
厚さ10μｍ〜200μｍのガラスペーストで同じ厚みで印
刷塗布し、このガラスの軟化温度よりも十分に高い温度
で熱処理する。この後、セラミック基板全面にTa2O5な
どにより、アンダーコート層を形成し、発熱体・給電体
と順次形成する。保護膜は、発熱体部２と凸部５を含む
形でTa2O5、SiO2、SiCなどで形成する。このような構造
のサーマルヘッドを熱記録装置上に押圧ローラ３を凸部
５及び、発熱体部２に十分に押圧するように配置する。
（一般には、発熱体部と凸部５の中心に押圧ローラ３が
くるように配置することが多い。） 第６図は、このような構成のサーマルヘッドによる押
圧力の分布を示した図である。A glass paste having a thickness of 10 μm to 100 μm is printed and applied on the entire surface of the ceramic substrate 1 (it is not necessary to apply the glass paste if the surface of the ceramic substrate is sufficiently smooth), and the position of the heating element 2 is adjusted. On the side opposite to the relative movement direction of the recording paper 4, a convex portion 5 parallel to the heating element portion 2 and a heating element portion 2 are printed and applied with the same thickness by a glass paste having a thickness of 10 μm to 200 μm, and the softening temperature of this glass Heat treatment at a temperature sufficiently higher than that. After that, an undercoat layer is formed on the entire surface of the ceramic substrate with Ta 2 O 5 or the like, and the heating element and the power feeding element are sequentially formed. The protective film is formed of Ta 2 O 5 , SiO 2 , SiC or the like so as to include the heating element portion 2 and the convex portion 5. The thermal head having such a structure is arranged on the thermal recording device so that the pressing roller 3 sufficiently presses the convex portion 5 and the heating element portion 2.
(In general, the pressing roller 3 is often arranged so as to come to the center of the heating element portion and the convex portion 5.) FIG. 6 is a diagram showing the distribution of the pressing force by the thermal head having such a configuration. is there.
第６図により、凸部５と発熱体部２で鋭いピークを持
った押圧力の分布であることがわかり、発熱体部２にお
ける押圧力を低下させることなく、記録紙４上の付着物
６を凸部５で鋭く摩滅することができる。It can be seen from FIG. 6 that the pressing force distribution has a sharp peak in the convex portion 5 and the heating element portion 2, and the attached matter 6 on the recording paper 4 is not reduced in the heating element portion 2. Can be sharply worn by the convex portion 5.
また、他の実施例として押圧ローラを２個用いた構造
の熱記録装置を第３図に示す。第３図の熱記録装置によ
っても、同様の効果が得られることはいうまでもない。Further, as another embodiment, FIG. 3 shows a thermal recording apparatus having a structure using two pressing rollers. Needless to say, the same effect can be obtained by the thermal recording apparatus shown in FIG.
以上のように本考案の熱記録装置によって、記録紙上
の付着物を予め摩滅することによりサーマルヘッドの寿
命特性の向上を達成することができる。As described above, with the thermal recording apparatus of the present invention, it is possible to improve the life characteristics of the thermal head by previously abrading the deposits on the recording paper.
また、上記効果に加え、発熱体部における押圧力が既
存の熱記録装置に対して、同等かそれ以上であるため、
既存の熱記録装置にサーマルヘッドのみを交換すること
により、容易に本考案の熱記録装置として利用すること
が可能でる。In addition to the above effects, the pressing force in the heating element is equal to or more than that of the existing thermal recording device,
By replacing only the thermal head with the existing thermal recording device, it can be easily used as the thermal recording device of the present invention.
また、製造工程上も凸部形成工程のみの追加であるた
め、コストも製造歩留まりもなんらかわるところがな
い。Moreover, since only the convex portion forming step is added in the manufacturing process, there is no change in cost or manufacturing yield.
第１図（Ａ）は本考案に用いる熱記録装置の一実施例を
示す断面図、第１図（Ｂ）は押圧ローラとサーマルヘッ
ドとの干渉を示す拡大断面図、第２図（Ａ）は本考案に
用いる熱記録装置の他の実施例を示す断面図、第２図
（Ｂ）は押圧ローラとサーマルヘッドとの干渉を示す拡
大断面図、第３図は本考案の熱記録装置の他の実施例を
示す断面図、第４図は従来の熱記録装置の例を示す断面
図、第５図は第１図（Ａ）の押圧力分布図、第６図は第
２図（Ａ）の押圧力分布図、第７図は本考案の熱記録装
置と従来の熱記録装置との寿命特性の比較説明図であ
る。 １……サーマルヘッド基板 ２……発熱体アレイ ３、31、32……押圧ローラ ４……記録紙 ５……凸部 ６……付着物 61……摩滅後の付着物FIG. 1 (A) is a sectional view showing an embodiment of a thermal recording apparatus used in the present invention, FIG. 1 (B) is an enlarged sectional view showing interference between a pressing roller and a thermal head, and FIG. 2 (A). Is a sectional view showing another embodiment of the thermal recording apparatus used in the present invention, FIG. 2 (B) is an enlarged sectional view showing the interference between the pressing roller and the thermal head, and FIG. 3 is a thermal recording apparatus of the present invention. FIG. 4 is a sectional view showing another embodiment, FIG. 4 is a sectional view showing an example of a conventional thermal recording apparatus, FIG. 5 is a pressing force distribution chart of FIG. 1 (A), and FIG. 6 is FIG. 2 (A). FIG. 7 is a comparative explanatory view of the life characteristics of the thermal recording apparatus of the present invention and the conventional thermal recording apparatus. 1 ... Thermal head substrate 2 ... Heating element array 3, 31, 32 ... Pressing roller 4 ... Recording paper 5 ... Convex part 6 ... Adhesion 61 ... Adhesion after abrasion
フロントページの続き (56)参考文献 特開 昭60−79972（ＪＰ，Ａ) 特開 平１−120362（ＪＰ，Ａ) 特開 平１−148568（ＪＰ，Ａ) 実開 平２−144444（ＪＰ，Ｕ) 実開 昭62−147539（ＪＰ，Ｕ) 実開 昭63−80137（ＪＰ，Ｕ) 実開 昭61−128038（ＪＰ，Ｕ)Continuation of the front page (56) Reference JP-A-60-79972 (JP, A) JP-A-1-120362 (JP, A) JP-A-1-148568 (JP, A) Actual Kaihei 2-144444 (JP , U) Actually open 62-147539 (JP, U) Actually open 63-80137 (JP, U) Actually open 61-128038 (JP, U)
Claims (1)
有すると共に、記録紙に熱記録を行うための発熱体アレ
イを有するセラミック基板によって形成されるサーマル
ヘッドと、前記基板との間で記録紙を挟持し、前記サー
マルヘッドに一定の押圧力を付与する押圧ローラとを有
し、前記サーマルヘッド上の発熱体アレイを介して記録
しに印字を行う熱記録装置において、 前記セラミック基板上のガラスグレーズ層の一部を発熱
体アレイ近傍で突出させて発熱体アレイと平行な凸部を
形成し、前記記録紙は前記発熱体アレイ近傍に形成され
たガラスグレーズ層の前記凸部と摺接して所定の印字位
置に搬送された後、前記発熱抵抗体アレイを介して記録
紙に記録を行うようにし、前記凸部を介して記録紙表面
の付着物を掻き落とし、前記発熱体アレイ上面の記録紙
との摩擦による傷を減少させるようにしたことを特徴と
する熱記録装置。1. A recording head is sandwiched between a thermal head formed of a ceramic substrate having a glass glaze layer on at least the entire surface thereof and having a heating element array for performing thermal recording on the recording paper, and the substrate. A thermal recording device having a pressing roller for applying a constant pressing force to the thermal head, and performing printing by recording via a heating element array on the thermal head, wherein a glass glaze layer on the ceramic substrate A portion of the recording paper is projected in the vicinity of the heating element array to form a convex portion parallel to the heating element array, and the recording paper is slidably contacted with the convex portion of the glass glaze layer formed in the vicinity of the heating element array to form a predetermined portion. After being conveyed to the printing position, recording is performed on the recording paper via the heating resistor array, and the adhered substances on the surface of the recording paper are scraped off via the convex portions, A thermal recording device characterized in that scratches due to friction with the recording paper on the upper surface of the array are reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989044710U JPH088824Y2 (en) | 1989-04-17 | 1989-04-17 | Thermal recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989044710U JPH088824Y2 (en) | 1989-04-17 | 1989-04-17 | Thermal recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02135240U JPH02135240U (en) | 1990-11-09 |
| JPH088824Y2 true JPH088824Y2 (en) | 1996-03-13 |
Family
ID=31558253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989044710U Expired - Lifetime JPH088824Y2 (en) | 1989-04-17 | 1989-04-17 | Thermal recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH088824Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6079972A (en) * | 1983-10-07 | 1985-05-07 | Fuji Xerox Co Ltd | Heating head for thermo-magnetic recording |
| JPH01120362A (en) * | 1987-11-04 | 1989-05-12 | Mitsubishi Electric Corp | Thermal head |
-
1989
- 1989-04-17 JP JP1989044710U patent/JPH088824Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02135240U (en) | 1990-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |