JPS62164556A - Thermal head and manufacture thereof - Google Patents

Thermal head and manufacture thereof

Info

Publication number
JPS62164556A
JPS62164556A JP748986A JP748986A JPS62164556A JP S62164556 A JPS62164556 A JP S62164556A JP 748986 A JP748986 A JP 748986A JP 748986 A JP748986 A JP 748986A JP S62164556 A JPS62164556 A JP S62164556A
Authority
JP
Japan
Prior art keywords
layer
glaze
heat generating
thermal head
glaze layer
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.)
Granted
Application number
JP748986A
Other languages
Japanese (ja)
Other versions
JPH0586345B2 (en
Inventor
Kyoji Shirakawa
白川　享志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to JP748986A priority Critical patent/JPS62164556A/en
Publication of JPS62164556A publication Critical patent/JPS62164556A/en
Publication of JPH0586345B2 publication Critical patent/JPH0586345B2/ja
Granted legal-status Critical Current

Links

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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/335—Structure of thermal heads

Abstract

PURPOSE:To enable a thermal head to perform high-quality printing with favorable clearness of edges of ink images, by providing on an insulating substrate a glaze layer comprising a steep slant part in proximity to a top surface part thereof, and providing a heat generating resistor layer, a current-supplying element layer or the like on the glaze layer. CONSTITUTION:A protective layer 17 comprises a oxidization-resistant layer 18 of SiO2 or the like which protects a heat generating resistor layer 13 from deterioration due to oxidation, and an abrasion-resistant layer 19 of Ta2O5 or the like which protects the layers 13, 14 from abrasion due to contact with a thermal recording medium or the like. Since the layer 13, 14 and 17 are provided on a steep slant part 12a of the glaze layer 12, the protective layer 17 also has a steep slant part 17a. Heat generating elements having such a construction are arranged directly on the same substrate, and the latter is cut at a braking line 20 proximate to the steep slant part 17a, whereby a thermal head is completed.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明はサーマルプリンタに用いられるサーマルヘッド
に関する。DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a thermal head used in a thermal printer.

〈従来の技術〉 第３図は従来のこの種のサーマルへ、ドの一般構造を示
す断面図である。絶縁性基板１上には断面が略円弧状の
ガラスからなるグレーズ層２が形成されておシ、このグ
レーズ層２の上に窒化メンタル（Ｔａ２Ｎ）等からなる
発熱抵抗体層３が形成されている。<Prior Art> FIG. 3 is a sectional view showing the general structure of a conventional thermal device of this type. A glaze layer 2 made of glass having a substantially arc-shaped cross section is formed on an insulating substrate 1, and a heating resistor layer 3 made of mental nitride (Ta2N) or the like is formed on this glaze layer 2. There is.

さらに、この発熱抵抗体／’ｆｉ３の上にはこの発熱抵
抗体層３に対して給電するためのアルミニウムＣＭ）等
からなる給電体層４が形成されていて、該給電体層４の
グレーズ層２０頂面部はエツチング等の手段により分断
されており、一方が共通電極ライン５に接続され、他方
が個別電極ライン６に接続されている。さらに、また、
発熱抵抗体層３、給電体層４、共通電極ライン５および
個別電極ライン６の上には、これらの保護層７が形成さ
れている。この保護層７は発熱抵抗体層３を酸化による
劣化から保護する二酸化ケイ素（Ｓ１０２）等からなる
耐酸化層８と、感熱記録媒体（図示せず）等との接触に
よる摩耗から発熱抵抗体層３および給電体層４を保護す
る五酸化タンタル（Ｔａ２’ｓ）等からなる耐摩耗層９
とからなっている。Further, on this heating resistor/'fi3, a power supply layer 4 made of aluminum (CM) or the like is formed for supplying power to this heating resistor layer 3, and a glaze layer of the power supply layer 4 is formed. The top surface portion of 20 is divided by means such as etching, and one side is connected to the common electrode line 5 and the other side is connected to the individual electrode line 6. Furthermore, also
A protective layer 7 is formed on the heating resistor layer 3, the power supply layer 4, the common electrode line 5, and the individual electrode line 6. This protective layer 7 includes an oxidation-resistant layer 8 made of silicon dioxide (S102) that protects the heating resistor layer 3 from deterioration due to oxidation, and an oxidation-resistant layer 8 made of silicon dioxide (S102) that protects the heating resistor layer 3 from deterioration due to oxidation. 3 and a wear-resistant layer 9 made of tantalum pentoxide (Ta2's) or the like that protects the power supply layer 4.
It consists of

そして、上述のような構造を持つ発熱要素を同一基板上
に直線的に配列し、情報に従って個別電極ライン６に選
択的に電圧を印加しグレーズ層２０頂面部に位置する発
熱抵抗体層３を発熱させ、この熱を耐酸化層８および耐
摩耗層９中を伝わせて保護層７０表面の発熱部７ａを発
熱させて感熱記録紙、インクリボン等に発色エネルギー
を与えるものである。Heat generating elements having the above-described structure are linearly arranged on the same substrate, and voltage is selectively applied to the individual electrode lines 6 according to the information to heat the heat generating resistor layer 3 located on the top surface of the glaze layer 20. It generates heat, transmits this heat through the oxidation-resistant layer 8 and the wear-resistant layer 9, causes the heat-generating portion 7a on the surface of the protective layer 70 to generate heat, and provides coloring energy to the heat-sensitive recording paper, ink ribbon, etc.

〈発明が解決しようとする問題点〉 しかしながら、上述した従来のサーマルヘッドにおいて
は、矢印入方向（第３図参照）に移動させながら印字す
ると発熱要素の断面形状が略円弧状なのでインクリボン
（図示せず）との接触面積が大きく発熱部７ａにより溶
融したインクを紙面に転写してからインクリボンを引き
はがすまでの距離ｔ（第３図参照）が長いので、この間
にインクが冷却して、転写したインクとインクリボン間
の結合力が、紙面と転写したインク間の結合力よシも大
きくなるためインクのハクリ現象が発生し印字した文字
が不完全となり印字品質が低下するという問題点があっ
た。<Problems to be Solved by the Invention> However, in the conventional thermal head described above, when printing while moving in the direction of the arrow (see Figure 3), the cross-sectional shape of the heating element is approximately arc-shaped, so the ink ribbon (see Figure 3) (not shown) is large, and the distance t (see Fig. 3) from when the melted ink is transferred by the heat generating part 7a to the paper surface to when the ink ribbon is peeled off is long (see Fig. 3), so the ink cools down during this time. The bonding force between the transferred ink and the ink ribbon is greater than the bonding force between the paper surface and the transferred ink, which causes the problem of ink peeling, resulting in incomplete printed characters and poor print quality. there were.

また、引きはがし角度θｌ（第３図参照）が小さいため
転写したインクの切れが悪く印字した文字がぼやけて印
字品質が低下するという問題点もあった０ さらに、グレーズ層２の底面積Ｓｌが大きく発熱抵抗体
層３で発生した熱が絶縁性基板１に大量に逃げるため熱
効率が悪いという問題点があった。In addition, because the peeling angle θl (see Figure 3) is small, the transferred ink does not cut easily, resulting in blurred printed characters and poor print quality.Furthermore, the bottom area Sl of the glaze layer 2 is There was a problem in that a large amount of heat generated in the heat generating resistor layer 3 escaped to the insulating substrate 1, resulting in poor thermal efficiency.

本発明の目的は上記問題点を解決し、高印字品質で熱効
率のよいサーマルヘッドを提供することにある。An object of the present invention is to solve the above problems and provide a thermal head with high print quality and good thermal efficiency.

く問題点を解決するための手段〉 本発明はグレーズ層に該グレーズ層の頂面部に近接する
急傾斜部を設けたことを特徴とする。Means for Solving the Problems> The present invention is characterized in that the glaze layer is provided with a steeply sloped portion close to the top surface portion of the glaze layer.

く作用〉 急傾斜部を設けたので引きはがし距離ｔが短縮され、引
きはがし角度θｌが大きくなると共に、グレーズ層の底
面積Ｓ１が小さくなる。Effect> Since the steeply sloped portion is provided, the peeling distance t is shortened, the peeling angle θl becomes large, and the bottom area S1 of the glaze layer becomes small.

〈実施例〉 本発明の一実施例を第１図に基づいて説明する。<Example> An embodiment of the present invention will be described based on FIG.

第１図は本発明のサーマルへ・ドの断面図である。FIG. 1 is a sectional view of the thermal head according to the present invention.

絶縁性基板１１上には断面が略直角三角形のガラスから
なるグレーズ層１２が形成されている。該グレーズ層１
２は、まず一点鎖線で示すように断面が略円弧状に形成
された後、エツチング等の手段により一端部が除去され
ることにより急傾斜部１２ａが形成されて、断面が略直
角三角形となるものである。該グレーズ層１２の上には
窒化タンタル（Ｔａ２Ｎ）等からなる発熱抵抗体層１３
が形成されておυ、さらに該発熱抵抗体層１３の上には
該発熱抵抗体層１３に対して給電するためのアルミニウ
ム（、’Ｕ）等からなる給電体層１４が形成されていて
、該給電体層１４のグレーズ層１２の頂面部はエツチン
グ等の手段によシ分断されている。そして一方が共通電
極ライン１５に接続され他方が個別電極ライン１６に接
続されている。さらに、また、発熱抵抗体層１３、給電
体層１４、共通電極ライン１５、および個別電極ライン
１６の上にはこれらの保護層１７が形成されている。A glaze layer 12 made of glass and having a substantially right triangular cross section is formed on the insulating substrate 11 . The glaze layer 1
2, the cross section is first formed into a substantially circular arc shape as shown by the dashed line, and then one end is removed by means such as etching to form a steeply sloped portion 12a, and the cross section becomes a substantially right triangle. It is something. On the glaze layer 12, a heating resistor layer 13 made of tantalum nitride (Ta2N) or the like is provided.
is formed on the heating resistor layer 13, and a power supply layer 14 made of aluminum (,'U) or the like is formed on the heating resistor layer 13 to supply power to the heating resistor layer 13. The top surface of the glaze layer 12 of the power supply layer 14 is cut into pieces by means such as etching. One side is connected to the common electrode line 15 and the other side is connected to the individual electrode line 16. Furthermore, a protective layer 17 is formed on the heating resistor layer 13, the power supply layer 14, the common electrode line 15, and the individual electrode line 16.

この保護層１７は発熱抵抗体層１３を酸化による劣化か
ら保護する二酸化ケイ素（ＳｉＯｚ）等からなる耐酸化
層１８と、感熱記録媒体（図示せず）等との接触による
摩耗から発熱抵抗体層１３および給電体層１４を保護す
る五酸化タンタル（Ｔａ２０ｓ）等からなる耐摩耗層１
９とからなっている。なお、第１図に示すようにグレー
ズ層１２の急傾斜部１２ａ上に発熱抵抗体層１３、給電
体層１４、および保護層１７が形成されるので保護層１
７も急傾斜部１７ａを有することになる。そして上述の
ような構造を持つ発熱要素を同一基板上に直線的に配列
し、谷急傾斜部１７ａに近接したブレーキングライン２
０で切断するとサーマルヘッドが完成する。This protective layer 17 includes an oxidation-resistant layer 18 made of silicon dioxide (SiOz) that protects the heating resistor layer 13 from deterioration due to oxidation, and an oxidation-resistant layer 18 that protects the heating resistor layer 13 from deterioration due to oxidation. A wear-resistant layer 1 made of tantalum pentoxide (Ta20s) or the like protects the power supply layer 13 and the power supply layer 14.
It consists of 9. Note that, as shown in FIG. 1, the heating resistor layer 13, the power supply layer 14, and the protective layer 17 are formed on the steeply sloped portion 12a of the glaze layer 12, so that the protective layer 1
7 also has a steeply sloped portion 17a. Heat generating elements having the above-described structure are arranged linearly on the same substrate, and the braking line 2 near the steeply sloped valley part 17a is formed.
Cutting at 0 completes the thermal head.

上述のようなサーマルヘッドを第１図の矢印Ｂ方向に移
動させながら印字すると、発熱部１７ｂに近接する位置
に急傾斜部１７ａが存在するため、インクリボン（図示
せず）のインクを溶融して紙面に転写してからインクリ
ボンを引きはがすまでの距離ｔが短かくなり、かつ、紙
面からインクリボンを引きはがす角度０２が大きくなる
ので、インクリボンのインクを転写後、インクが固化す
る前にインクリボンを紙面から急速に引きはがすことが
できるので、インクのハクリ現象がなく、かつ、インク
の切れのよい高品質な印字が可能となる。When printing is performed while moving the thermal head as described above in the direction of arrow B in FIG. 1, the steeply inclined portion 17a exists in the vicinity of the heat generating portion 17b, so that the ink on the ink ribbon (not shown) is melted. The distance t from when the ink ribbon is transferred to the paper surface to when the ink ribbon is peeled off becomes shorter, and the angle 02 at which the ink ribbon is peeled off from the paper surface becomes larger. Since the ink ribbon can be rapidly peeled off from the paper surface, there is no ink peeling phenomenon, and high-quality printing with good ink removal is possible.

さらにグレーズ層１２の底面積Ｓ２が小さくなるので発
熱抵抗体層１３で発生した熱のうち、絶縁性基板１１に
逃げる熱が少なくなるので熱効率がよくなる。Furthermore, since the bottom area S2 of the glaze layer 12 is reduced, less of the heat generated in the heating resistor layer 13 escapes to the insulating substrate 11, resulting in improved thermal efficiency.

第２図に本発明の他の実施例を示す。この実施例は断面
が略円弧状に形成されたグレーズ層１２の両端部をエツ
チング等の手段により除去して急傾斜部１２ａ、１２ａ
を両側に形成することにより、断面を略台形としたもの
である。これによシグレーズ層１２の底面積Ｓ２がさら
に小さくなり熱効率が向上する。FIG. 2 shows another embodiment of the invention. In this embodiment, both ends of the glaze layer 12, which has a substantially arcuate cross section, are removed by means such as etching to form steeply sloped parts 12a, 12a.
are formed on both sides, so that the cross section is approximately trapezoidal. This further reduces the bottom area S2 of the glaze layer 12 and improves thermal efficiency.

〈発明の効果〉 以上説明してきたように、本発明においては、エツチン
グ等の手段によりグレーズ層に該グレーズ層の頂面部に
近接する急傾斜部を設けたので、インクリボンのインク
を溶融して、紙面に転写してからインクリボンを引きは
がすまでの距離が短かくなり、かつ、紙面からインクリ
ボンを引きはがす角度が大きくなるので、インクのハク
リ現象がなく、かつ、インクの切れのよい高品質な印字
が可能となると共に、グレーズ層の底面積が小さくカシ
絶縁性基板に逃げる熱が少なくなるので熱効率がよくな
る等の顕著な効果を奏する。<Effects of the Invention> As explained above, in the present invention, a steeply sloped portion close to the top surface of the glaze layer is provided in the glaze layer by means such as etching, so that the ink on the ink ribbon is melted. , the distance from transferring to the paper surface to peeling off the ink ribbon is shortened, and the angle at which the ink ribbon is peeled off from the paper surface is large, so there is no ink peeling phenomenon and the ink can be easily removed at a high height. In addition to making it possible to print with high quality, the bottom area of the glaze layer is small and less heat escapes to the oak insulating substrate, resulting in remarkable effects such as improved thermal efficiency.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例の断面図、第２図は本発明の
他の実施例の断面図、第３図は従来例の断面図である。 １１・・絶縁性基板　　　１２・・・グレーズ層１２ａ
・・・急傾斜部　　　１３・発熱抵抗体層１４・給電体
層　　　　１７・・・保護層像　１　図 第　２　図 第　３　図FIG. 1 is a sectional view of one embodiment of the present invention, FIG. 2 is a sectional view of another embodiment of the invention, and FIG. 3 is a sectional view of a conventional example. 11... Insulating substrate 12... Glaze layer 12a
... Steep slope part 13, heating resistor layer 14, power supply layer 17... Protective layer image 1 Figure 2 Figure 3

Claims (2)

【特許請求の範囲】[Claims] （１）絶縁性基板上にグレーズ層を形成し、該グレーズ
層上に複数個の発熱抵抗体層を配置し、該発熱抵抗体層
に電力を供給する給電体層と、該給電体層および前記発
熱抵抗体層上に形成された保護層とを備えたサーマルヘ
ッドにおいて、前記グレーズ層に該グレーズ層の頂面部
に近接する急傾斜部を設けたことを特徴とするサーマル
ヘッド。(1) A glaze layer is formed on an insulating substrate, a plurality of heat generating resistor layers are arranged on the glaze layer, and a power supply layer that supplies power to the heat generating resistor layer; A thermal head comprising a protective layer formed on the heating resistor layer, wherein the glaze layer is provided with a steeply sloped portion close to the top surface of the glaze layer. （２）絶縁性基板上にグレーズ層を形成し、該グレーズ
層上に複数個の発熱抵抗体層を配置し、該発熱抵抗体層
に電力を供給する給電体層と、該給電体層および前記発
熱抵抗体層上に形成された保護層とを備えたサーマルヘ
ッドの製造方法において前記絶縁性基板上にグレーズ層
を形成し、該グレーズ層の端部をエッチング等の手段に
より除去してグレーズ層に急傾斜部を形成した上に、前
記発熱抵抗体層、給電体層、保護層の順に積層形成した
ことを特徴とするサーマルヘッドの製造方法。(2) A glaze layer is formed on an insulating substrate, a plurality of heat generating resistor layers are arranged on the glaze layer, and a power supply layer that supplies power to the heat generating resistor layer; In the method for manufacturing a thermal head comprising a protective layer formed on the heating resistor layer, a glaze layer is formed on the insulating substrate, and an end portion of the glaze layer is removed by means such as etching to form a glaze. 1. A method of manufacturing a thermal head, comprising forming a steeply sloped portion in the layer, and then laminating the heating resistor layer, the power supply layer, and the protective layer in this order.
JP748986A 1986-01-16 1986-01-16 Thermal head and manufacture thereof Granted JPS62164556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP748986A JPS62164556A (en) 1986-01-16 1986-01-16 Thermal head and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP748986A JPS62164556A (en) 1986-01-16 1986-01-16 Thermal head and manufacture thereof

Publications (2)

Publication Number Publication Date
JPS62164556A true JPS62164556A (en) 1987-07-21
JPH0586345B2 JPH0586345B2 (en) 1993-12-10

Family

ID=11667175

Family Applications (1)

Application Number Title Priority Date Filing Date
JP748986A Granted JPS62164556A (en) 1986-01-16 1986-01-16 Thermal head and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS62164556A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01133061A (en) * 1987-11-18 1989-05-25 Matsushita Electric Ind Co Ltd Electrophotographic sensitive body
JPH04239654A (en) * 1991-01-24 1992-08-27 Rohm Co Ltd Thermal head and its manufacturing method
JPH04239655A (en) * 1991-01-24 1992-08-27 Rohm Co Ltd Thermal head and its manufacturing method
JPH04363260A (en) * 1991-11-18 1992-12-16 Rohm Co Ltd Thermal head
JPH0524230A (en) * 1991-07-22 1993-02-02 Rohm Co Ltd Thermal head
US5317341A (en) * 1991-01-24 1994-05-31 Rohm Co., Ltd. Thermal head and method of making the same
JP2007212083A (en) * 2006-02-10 2007-08-23 Takao Hara Cooling device, water forming device and air conditioning system
JP2013202862A (en) * 2012-03-28 2013-10-07 Toshiba Hokuto Electronics Corp Thermal print head
JP2017170618A (en) * 2016-03-18 2017-09-28 東芝ホクト電子株式会社 Thermal print head and thermal printer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176779A (en) * 1984-02-23 1985-09-10 Alps Electric Co Ltd Thermal head and manufacture thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176779A (en) * 1984-02-23 1985-09-10 Alps Electric Co Ltd Thermal head and manufacture thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01133061A (en) * 1987-11-18 1989-05-25 Matsushita Electric Ind Co Ltd Electrophotographic sensitive body
JPH04239654A (en) * 1991-01-24 1992-08-27 Rohm Co Ltd Thermal head and its manufacturing method
JPH04239655A (en) * 1991-01-24 1992-08-27 Rohm Co Ltd Thermal head and its manufacturing method
US5317341A (en) * 1991-01-24 1994-05-31 Rohm Co., Ltd. Thermal head and method of making the same
JPH0524230A (en) * 1991-07-22 1993-02-02 Rohm Co Ltd Thermal head
JPH04363260A (en) * 1991-11-18 1992-12-16 Rohm Co Ltd Thermal head
JPH0661945B2 (en) * 1991-11-18 1994-08-17 ローム株式会社 Thermal head
JP2007212083A (en) * 2006-02-10 2007-08-23 Takao Hara Cooling device, water forming device and air conditioning system
JP2013202862A (en) * 2012-03-28 2013-10-07 Toshiba Hokuto Electronics Corp Thermal print head
JP2017170618A (en) * 2016-03-18 2017-09-28 東芝ホクト電子株式会社 Thermal print head and thermal printer

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Publication number Publication date
JPH0586345B2 (en) 1993-12-10

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