JPS6351156A - Substrate for end surface type thermal head - Google Patents
Substrate for end surface type thermal headInfo
- Publication number
- JPS6351156A JPS6351156A JP19577986A JP19577986A JPS6351156A JP S6351156 A JPS6351156 A JP S6351156A JP 19577986 A JP19577986 A JP 19577986A JP 19577986 A JP19577986 A JP 19577986A JP S6351156 A JPS6351156 A JP S6351156A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- end surface
- glaze layer
- thermal head
- type 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.)
- Pending
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 32
- 239000012777 electrically insulating material Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011810 insulating material Substances 0.000 abstract 2
- 239000011521 glass Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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
Landscapes
- Electronic Switches (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は感熱プリンタ用ヘッドに関し、特に端面型サー
マルヘッド用基板に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a head for a thermal printer, and more particularly to a substrate for an edge type thermal head.
〈従来の技術〉
従来、端面型サーマルヘッド用基板としては第１図に示
すようにセラミック基板１と、該基板の端面に形成され
たガラスグレーズ層２からなるものが知られている。例
えば、特開昭６０−２１２６３号公報によれば、ガラス
グレーズ層２の中央部の厚さＡが約８０μｍとなるよう
に構成するのが望ましく、溶融グレーズ層材料の表面張
力によりグレーズ層２の表面の曲率半径Ｒを２＃ｒ１〜
１０ｍとするためには、端面３の平面部の幅ｔを１ｓ〜
２．５履とすると良いことが知られている。<Prior Art> Conventionally, as a substrate for an end-face type thermal head, one consisting of a ceramic substrate 1 and a glass glaze layer 2 formed on the end face of the substrate is known, as shown in FIG. For example, according to Japanese Unexamined Patent Publication No. 60-21263, it is desirable that the thickness A of the central part of the glass glaze layer 2 is approximately 80 μm, and the surface tension of the molten glaze layer material causes the thickness of the glaze layer 2 to The radius of curvature R of the surface is 2#r1~
In order to make it 10 m, the width t of the flat part of the end face 3 should be 1 s ~
It is known that 2.5 shoes are good.
しかしながら、熱応答性を好適化しかつ粗い紙に対する
印字品質を改善するためにはガラスグレーズ層２の中央
部の厚さＡを４０μｍ以下とし、グレーズ層２の表面の
曲率半径Ｒを２Ｍ未満とするのが好ましく、従来技術に
基づく端面型サーマルヘッド用基板によれば、そのセラ
ミック基板１の厚さを１＃以下としなければならず、そ
の強度が実用上不十分となる。However, in order to optimize the thermal response and improve the printing quality on rough paper, the thickness A of the central part of the glass glaze layer 2 should be 40 μm or less, and the radius of curvature R of the surface of the glaze layer 2 should be less than 2M. According to the edge-type thermal head substrate based on the prior art, the thickness of the ceramic substrate 1 must be 1# or less, and its strength is insufficient for practical use.
〈発明が解決しようとする問題点〉
このような点に鑑み、本発明の主な目的は、グレーズ層
の厚さＡを４０μｍ以下とし、かつグレーズ層の表面の
曲率半径Ｒを２ｍ未満とすることにより熱応答性及び粗
い紙に対する印字品質を改善し得るような感熱プリンタ
用端面型サーマルヘッド用基板を提供することにある。<Problems to be Solved by the Invention> In view of these points, the main purpose of the present invention is to make the thickness A of the glaze layer 40 μm or less, and to make the radius of curvature R of the surface of the glaze layer less than 2 m. An object of the present invention is to provide a substrate for an end-face type thermal head for a thermal printer, which can thereby improve thermal responsiveness and print quality on rough paper.
〈問題点を解決するための手段〉
このような目的は、本発明によれば、端面型サーマルヘ
ッド用基板であって、発熱部をなす端面の平面部分の左
右幅ｔ′を０．２馴〜０．８Ｉｎｌ１１とし、かつ前記
端面に、前記基板よりも低い熱伝導率を有する電気絶縁
性材料からなるグレーズ層が設けられていることを特徴
とする端面型サーマルヘッド用基板を提供することによ
り達成される。<Means for Solving the Problems> According to the present invention, such an object is to provide a substrate for an end face type thermal head, in which the horizontal width t' of the flat part of the end face forming the heat generating part is set to 0.2 mm. -0.8Inl11, and a glaze layer made of an electrically insulating material having a thermal conductivity lower than that of the substrate is provided on the end surface. achieved.
特に、発熱部をなす端面の左右に隣接する位置に、前記
端面に対して１５度〜６０度の角度をなす電極面を形成
すると良い。In particular, electrode surfaces forming an angle of 15 degrees to 60 degrees with respect to the end surface may be formed at positions adjacent to the left and right sides of the end surface forming the heat generating portion.
〈作用〉
このようにすれば、例えばアルミナ等からなる基板にグ
レーズ層を形成する際に、溶融グレーズ層材料の表向張
力により所要の諸元を有するグレーズ層が形成され、熱
応答性及び印字品質の改善が簡単に可能となる。<Function> In this way, when forming a glaze layer on a substrate made of alumina or the like, a glaze layer having the required specifications is formed by the surface tension of the molten glaze layer material, improving thermal responsiveness and printing. Quality can be easily improved.
〈実施例〉
第２図は本発明に基づくサーマルヘッド用基板の一実施
例の断面図である。このサーマルヘッド用基板は、アル
ミナ等からなる基板１を有し、この基板の端面３には左
右から面取状に傾斜面４が設けられ、端面３の幅ｔ′が
基板１の板厚下よりも小さくなるようにされている。端
面３と傾斜面４との間の角度Ｓは、１５度〜６０度の範
囲から選ばれる。<Embodiment> FIG. 2 is a sectional view of an embodiment of a thermal head substrate according to the present invention. This thermal head substrate has a substrate 1 made of alumina or the like, and the end surface 3 of this substrate is provided with a chamfered slope 4 from the left and right, and the width t' of the end surface 3 is below the thickness of the substrate 1. It is designed to be smaller than. The angle S between the end surface 3 and the inclined surface 4 is selected from the range of 15 degrees to 60 degrees.
これらの寸法は例えば以下の第１表に示されるように定
めることにより良好な結果を得ることができる。Good results can be obtained by determining these dimensions, for example, as shown in Table 1 below.
（以下余白）
第１表
Ａ（μｍ） Ｒ＜ｍｍ） ｔ （ｍ）８０
２．０ １．０
６０ ２．０ ０．８
４０ １．５ ０．５
２０ １．０ ０．２
特に、グレーズ層２の表面の中央部の曲率半径Ｒを１．
５簡以下となるようにしかつガラスグレーズ層２の中央
部の厚さ八を６０μ■以下となるようにするのが望まし
いことから、本発明によれば、一般にｔ′を０．１簡〜
０．８＃とし、Ｓを１５度〜６０度としている。Ｓが６
０度以上の場合、電極が破断し易くなり、Ｓが１５度以
下の場合、発熱面の紙及びリボンに対する接触が不良と
なり易い。(Margin below) Table 1 A (μm) R<mm) t (m) 80
2.0 1.0 60 2.0 0.8 40 1.5 0.5 20 1.0 0.2 In particular, the radius of curvature R at the center of the surface of the glaze layer 2 is set to 1.
Since it is desirable that the thickness of the central portion of the glass glaze layer 2 be 60 μm or less, according to the present invention, t' is generally set to 0.1 μm or less.
0.8#, and S is 15 degrees to 60 degrees. S is 6
When S is 0 degrees or more, the electrode is likely to break, and when S is 15 degrees or less, the contact between the heat generating surface and the paper and ribbon tends to be poor.
第３図は、発熱部としての端面３を、平板状の基板１の
主面６とその端面５との間の陵線を面取状に平坦化する
ことにより得ている。In FIG. 3, the end surface 3 as a heat generating portion is obtained by flattening the ridge line between the main surface 6 of the flat substrate 1 and the end surface 5 into a chamfered shape.
第４図は、第３図に示されたものと同様の基板７を用い
て構成されたサーマルヘッドの一実施例の詳細な構造を
示す。例えばアルミナ等のセラミック材料からなる基板
７の主面８と端面９との間に傾斜面１０が形成されてい
る。この傾斜面１０の幅ｔ′は０．２ｍであって、その
表面に２０〜６０μｍの厚さになるようにガラスグレー
ズ層１１が設けられている。更にその表面の発熱部をな
すべき部分には、５ｉ０２などからなるアンダーコート
膜１２が蒸着マスクを用いてイオンブレーティングを行
なうことにより突設され、Ｔａ２Ｎ及びＣｒ−Ａｌ、Ｉ
をスパッタリングした後にフォトエツチングを行い、発
熱抵抗体１３及び配線層１４．１５が所定のパターンに
て形成されている。FIG. 4 shows a detailed structure of an embodiment of a thermal head constructed using a substrate 7 similar to that shown in FIG. For example, an inclined surface 10 is formed between a main surface 8 and an end surface 9 of a substrate 7 made of a ceramic material such as alumina. The width t' of this inclined surface 10 is 0.2 m, and a glass glaze layer 11 is provided on its surface to a thickness of 20 to 60 μm. Furthermore, an undercoat film 12 made of 5i02 or the like is provided protrudingly on the part of the surface where the heat generating part is to be formed by performing ion blating using a vapor deposition mask.
After sputtering, photoetching is performed to form the heating resistor 13 and wiring layers 14 and 15 in a predetermined pattern.
さらにその表面には、耐摩耗及び酸化防止のための８１
０２などからなる保護膜１６がイオンブレーティングに
より形成される。Furthermore, the surface has 81% anti-wear and anti-oxidation properties.
A protective film 16 made of 02 or the like is formed by ion blasting.
上記実施例に於ては基板がセラミック材料からなるもの
であるとしたが、金属等信の材料からなるものであって
も良い。In the above embodiment, the substrate is made of a ceramic material, but it may be made of a metal or other metal material.
〈発明の効果〉
このように、本発明によれば、溶融グレーズ材料の表面
張力によりグレーズ層の所望の曲率及び深さが得られる
ことから、その製作が容易でありしかも良好な接触によ
る印字品質の改善及びグレーズ層が薄いことによる熱応
答性の向上が達成され、サーマルヘッドの性能向上に於
て多大の効果を奏することができる。<Effects of the Invention> As described above, according to the present invention, the desired curvature and depth of the glaze layer can be obtained by the surface tension of the molten glaze material, making it easy to manufacture and improving printing quality due to good contact. As a result, improvements in thermal response due to the thinness of the glaze layer are achieved, and a great effect can be achieved in improving the performance of the thermal head.
第１図は従来技術に基づく端面型サーマルヘッド用基板
を示す断面図でおる。
第２図及び第３図は本発明に基づくサーマルヘッド用基
板の異なる実施例を示す断面図でおる。
第４図は、第３図に示されたものと同様の基板を用いて
構成されたサーマルヘッドの一実施例の詳細な構造を示
す断面図でおる。
１・・・基板 ２・・・グレーズ層３・・・
端面 ４・・・傾斜面５・・・端面
６・・・主面７・・・基板 ８・・・主
面９・・・端面 １０・・・傾斜面１１・・
・ガラスグレーズ層
１２・・・アンダーコート膜
１３・・・発熱抵抗体 １４．１５・・・配、礫層１
６・・・保護膜FIG. 1 is a sectional view showing a substrate for an end-face type thermal head based on the prior art. FIGS. 2 and 3 are cross-sectional views showing different embodiments of the thermal head substrate according to the present invention. FIG. 4 is a sectional view showing the detailed structure of an embodiment of a thermal head constructed using a substrate similar to that shown in FIG. 1...Substrate 2...Glaze layer 3...
End face 4... Slanted face 5... End face
6... Main surface 7... Substrate 8... Main surface 9... End surface 10... Inclined surface 11...
-Glass glaze layer 12...undercoat film 13...heating resistor 14.15...distribution, gravel layer 1
6...Protective film
Claims (2)
なす端面の平面部分の左右幅ｔ′を０．２ｍｍ〜０．８
ｍｍとし、かつ前記端面に、前記基板よりも低い熱伝導
率を有する電気絶縁性材料からなるグレーズ層が設けら
れていることを特徴とする端面型サーマルヘッド用基板
。(1) A substrate for an end face type thermal head, in which the horizontal width t' of the flat part of the end face forming the heat generating part is 0.2 mm to 0.8 mm.
1. A substrate for an end-face type thermal head, characterized in that the end face is provided with a glaze layer made of an electrically insulating material having a lower thermal conductivity than the substrate.
前記端面に対して１５度〜６０度の角度をなす電極面が
形成されていることを特徴とする特許請求の範囲第１項
に記載の端面型サーマルヘッド用基板(2) At positions adjacent to the left and right of the end surface forming the heat generating part,
The substrate for an edge type thermal head according to claim 1, wherein an electrode surface is formed at an angle of 15 degrees to 60 degrees with respect to the edge surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19577986A JPS6351156A (en) | 1986-08-21 | 1986-08-21 | Substrate for end surface type thermal head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19577986A JPS6351156A (en) | 1986-08-21 | 1986-08-21 | Substrate for end surface type thermal head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6351156A true JPS6351156A (en) | 1988-03-04 |
Family
ID=16346824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19577986A Pending JPS6351156A (en) | 1986-08-21 | 1986-08-21 | Substrate for end surface type thermal head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6351156A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02125757A (en) * | 1988-07-11 | 1990-05-14 | Ngk Spark Plug Co Ltd | Substrate for inclined type thermal head and preparation thereof |
| US5422661A (en) * | 1991-01-22 | 1995-06-06 | Ngk Insulators, Ltd. | End-contact type thermal recording head having heat-generating portion on thin-walled end portion of ceramic substrate |
| US5666149A (en) * | 1991-01-22 | 1997-09-09 | Ngk Insulators, Ltd. | End-contact type thermal recording head having heat-generating portion on thin-walled end portion of ceramic substrate |
| US5909234A (en) * | 1991-01-22 | 1999-06-01 | Ngk Insulators, Ltd. | End-contact type thermal recording head having heat-generating portion on thin-walled end portion of ceramic substrate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140722A (en) * | 1979-04-18 | 1980-11-04 | Hitachi Metals Ltd | Manufacture of ferrite fine grain powder |
| JPS5793171A (en) * | 1980-12-02 | 1982-06-10 | Seiko Instr & Electronics Ltd | Thermal head |
| JPS6021263A (en) * | 1983-07-15 | 1985-02-02 | Matsushita Electric Ind Co Ltd | Base board for end surface type thermal head |
-
1986
- 1986-08-21 JP JP19577986A patent/JPS6351156A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140722A (en) * | 1979-04-18 | 1980-11-04 | Hitachi Metals Ltd | Manufacture of ferrite fine grain powder |
| JPS5793171A (en) * | 1980-12-02 | 1982-06-10 | Seiko Instr & Electronics Ltd | Thermal head |
| JPS6021263A (en) * | 1983-07-15 | 1985-02-02 | Matsushita Electric Ind Co Ltd | Base board for end surface type thermal head |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02125757A (en) * | 1988-07-11 | 1990-05-14 | Ngk Spark Plug Co Ltd | Substrate for inclined type thermal head and preparation thereof |
| US5422661A (en) * | 1991-01-22 | 1995-06-06 | Ngk Insulators, Ltd. | End-contact type thermal recording head having heat-generating portion on thin-walled end portion of ceramic substrate |
| US5666149A (en) * | 1991-01-22 | 1997-09-09 | Ngk Insulators, Ltd. | End-contact type thermal recording head having heat-generating portion on thin-walled end portion of ceramic substrate |
| US5909234A (en) * | 1991-01-22 | 1999-06-01 | Ngk Insulators, Ltd. | End-contact type thermal recording head having heat-generating portion on thin-walled end portion of ceramic substrate |
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