JPS61121964A - Thermal head - Google Patents

Thermal head

Info

Publication number
JPS61121964A
JPS61121964A JP59243625A JP24362584A JPS61121964A JP S61121964 A JPS61121964 A JP S61121964A JP 59243625 A JP59243625 A JP 59243625A JP 24362584 A JP24362584 A JP 24362584A JP S61121964 A JPS61121964 A JP S61121964A
Authority
JP
Japan
Prior art keywords
printing
thermal head
glaze layer
heat
heating resistor
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
Application number
JP59243625A
Other languages
Japanese (ja)
Inventor
Katsuhiko Suwa
諏訪　勝彦
Minoru Mukoda
向田　稔
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59243625A priority Critical patent/JPS61121964A/en
Publication of JPS61121964A publication Critical patent/JPS61121964A/en
Pending 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

Landscapes

  • Electronic Switches (AREA)
  • Non-Adjustable Resistors (AREA)

Abstract

PURPOSE:To enable printing of which the printing dot cycle is 0.9-0.6msec, by providing a glaze layer of which the projection shape height is 70-120mum, a heat generating resistor comprising Ni-Cr, a conductor and a protective layer comprising SiC on a substrate. CONSTITUTION:At the time of printing, voltage is at first generated between conductors 4a, 4b and resistance coefficient is stable within a range of -3ppm/ deg.C-3ppm/ deg.C. When printing was performed at a printing dot cycle of 0.9-0.6msec, a current is flowed to a heat generating resistor 7 using Ni-Cr, of which the resistance value is stable even if the surface temp. of a thermal head reaches 600-700 deg.C and the heat generating resistor 7 generates heat. In this case, because the height of the protruded shape of the glaze layer 2a is set to a high value of 70-120mum, the heat generated from the heat generating resistor 7 is accumulated in the glaze layer 2a and the accumulated heat is utilized in printing.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は感熱印字装置および感熱転写印字装置に用いる
サーマルヘッドに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a thermal head used in a thermal printing device and a thermal transfer printing device.

従来例の構成とその問題点 近年、印字装置の普及はめざましく、特に印字２　ベー
ジ 中の印字音が小さいノンインパクトタイプの感熱印字装
置および感熱転写印字装置が注目を浴びているが、これ
らの印字部にはサーマルヘッドが使用されている。Conventional configurations and their problems In recent years, printing devices have spread rapidly, and in particular, non-impact type thermal printing devices and thermal transfer printing devices, which have low printing noise during printing, are attracting attention. A thermal head is used in this section.

以下図面を参照しながら、上述したよう彦従来のサーマ
ルヘッドについて説明する。The conventional thermal head described above will be described below with reference to the drawings.

第１図において、１はアルミナ基板、２はアルミナ基板
１上に部分的に形成された突起形状のグレーズ層、３は
グレーズ層２およびアルミナ基板１上に形成された発熱
抵抗体、　４ａ　、ａｂは発熱抵抗体３上に形成された
発熱抵抗体３を発熱させるための導電体、６は発熱抵抗
体３および導電体４ａ、ａｂ上に形成された耐酸化層、
６は耐酸化層６上に形成された耐摩耗層である。In FIG. 1, 1 is an alumina substrate, 2 is a protrusion-shaped glaze layer partially formed on the alumina substrate 1, 3 is a heating resistor formed on the glaze layer 2 and the alumina substrate 1, 4a, ab 6 is a conductor formed on the heat generating resistor 3 for causing the heat generating resistor 3 to generate heat; 6 is an oxidation-resistant layer formed on the heat generating resistor 3 and the conductors 4a, ab;
6 is a wear-resistant layer formed on the oxidation-resistant layer 6.

この従来のサーマルヘッドは、一般的に用いられている
発熱抵抗体としてＴａ２Ｎ　（窒花タンタル）を、耐酸
化層として５１０（−酸化ケイ素）、５ｉ０２（二酸化
ケイ素）を、耐摩耗層としてＴａ２０３（五酸化タンタ
ル）をそれぞれ使用している。１だ。This conventional thermal head uses Ta2N (tantalum) as the commonly used heating resistor, 510 (-silicon oxide) and 5i02 (silicon dioxide) as the oxidation-resistant layer, and Ta203 (silicon dioxide) as the wear-resistant layer. tantalum pentoxide). It's 1.

グレーズ層の突起形状の高さが４０μｍ〜６０μｍ３　
ベージ である。これらの構成によるサーマルヘッドで印字トレ
ド周期が２．４ｍ５ｅｃ〜１．２ｍＩ！ｅｃの四速印字
゛で品字させ乏場合、印字文字ヒして印字可能と゛なる
ときのサーマルヘッドに必要な印加エネルギは０．４ｍ
５程度で、そのときのサーマルヘッドの　　　゛表面温
度も３００℃〜４ｏｏ℃と低く、サーマルヘッドの寿命
も１×１０ハルス以上ある。しかしながら印字ドツト周
期が０．９　ｍ５ｅｃ　”　ｏ、ｅ　ｍ５ｅｃの高速印
字で印字させる場合、印字文字として印字可能となると
きのサーマルヘッドに必要な印加′エネルギは０．６ｍ
ｊ以上となり、そのときのサーマルヘッドの表面温度も
６００℃〜７ｏ○℃と高　　　温になるため、発熱抵抗
体の亀裂や耐酸化層、耐摩耗層の剥離が生じてし１い、
サーマルヘッドの寿命も１×１０ハルス未滴になり、通
常使用可能とされるサーマルヘッドの寿命の１×１０８
パルス以上を満たさないため、高速印字の実用化ができ
ない欠点を有していた。The height of the protrusion shape of the glaze layer is 40 μm to 60 μm3
Beige. The printing cycle of the thermal head with these configurations is 2.4 m5ec to 1.2 mI! If the quality is not good with EC's 4-speed printing, the energy required to apply to the thermal head is 0.4 m when the printed characters are hit and can be printed.
5, the surface temperature of the thermal head at that time is as low as 300°C to 400°C, and the thermal head has a lifespan of 1×10 Hals or more. However, when printing at high-speed printing with a printing dot period of 0.9 m5ec'' o, e m5ec, the applied energy required for the thermal head to be able to print as a printed character is 0.6 m5ec.
At that time, the surface temperature of the thermal head will be as high as 600°C to 7°C, so cracks in the heating resistor and peeling of the oxidation-resistant layer and the wear-resistant layer will occur.
The lifespan of the thermal head is also 1×10 Hals, which is 1×108 of the lifespan of a thermal head that is normally usable.
Since it does not satisfy the pulse requirement or higher, it has the disadvantage that high-speed printing cannot be put to practical use.

発明の目的 本発明は上記欠点を鑑み、印字ドツト周期０．９ｍ５ｅ
Ｃ〜０．６　ｍ５ｅｃの印字が可能で、かつ１と１０８
パルス以上の寿命があるサーマルヘッドを提供するもの
である。Purpose of the Invention In view of the above-mentioned drawbacks, the present invention has a printing dot period of 0.9 m5e.
Capable of printing C~0.6 m5ec, and 1 and 108
This provides a thermal head with a lifespan longer than that of a pulse.

発明の構成 この目的を達成するために本発明のサーマルヘッドは、
基板上に部分的に形成されたグレーズ層の突起形状の高
さｆ、１７０μｍ〜１２０μｍとし、発熱抵抗体材料に
Ｎｉ−０ｒにッケルクローム）を、保護膜材料にＳｉＣ
（炭化ケイ素）ｆ：それぞれ用いたものである。Structure of the Invention In order to achieve this object, the thermal head of the present invention has the following features:
The height f of the protrusion shape of the glaze layer partially formed on the substrate is set to 170 μm to 120 μm, and the heating resistor material is Ni-0R (nickel chrome) and the protective film material is SiC.
(Silicon carbide) f: Each was used.

この構成により＝Ｎｉ−Ｃｒ’にッケルクローム）を使
用した発熱抵抗体の抵抗温度係数は一３ｐｐｍ／℃〜３
ｐｐｍ／’Ｃと安定して、サーマルヘッドの表面温度が
５６０℃〜６５０’Ｃと高温に入っても発熱抵抗体の抵
抗値が安定している。かつ発熱抵抗体で発熱した熱はグ
レーズ層に蓄熱され、その蓄熱を利用して印字させるた
め、印字ドツト周期０．９　ｙｅｓ　ｅｃ　〜０．６　
ｍｓ　ｅｃの印字に必要な印加エネルギが０．４ｍｊ〜
０．５ｙｙ１ｊに低下する。かつ一般的に耐摩耗性に優
れているＳｉＣ（炭化ケイ素）を６ページ 使用することにより、印字ドツト周期０．９ｍ８ｅｃ〜
０．６　ｍ５ｅｃの印字をした場合、サーマルヘッドの
寿命が１×１０８パルス以上を満たすこととなる。With this configuration, the temperature coefficient of resistance of the heating resistor using Ni-Cr' (Kickel chrome) is -3 ppm/°C to 3
ppm/'C, and the resistance value of the heating resistor remains stable even when the surface temperature of the thermal head reaches a high temperature of 560 to 650'C. In addition, the heat generated by the heating resistor is stored in the glaze layer, and since the stored heat is used for printing, the printing dot period is 0.9 yes ec ~ 0.6
The applied energy required for printing ms ec is 0.4 mj ~
It decreases to 0.5yy1j. By using 6 pages of SiC (silicon carbide), which generally has excellent wear resistance, the printing dot period is 0.9m8ec~
When printing at 0.6 m5ec, the life of the thermal head satisfies 1 x 108 pulses or more.

また、従来の耐酸化層、耐摩耗層の２層を、ＳｉＣ（炭
化ケイ素）の保護膜を使用することにより１層になり、
製造工程が削減され、製造時間の短縮およびサーマルヘ
ッドの低コスト化を実現することができる。　　　。In addition, by using a SiC (silicon carbide) protective film, the conventional oxidation-resistant layer and wear-resistant layer are reduced to a single layer.
The number of manufacturing steps is reduced, making it possible to shorten manufacturing time and reduce the cost of the thermal head. .

実施例の説明　　　　　　　　　、 以下本発明の一実施例につい丁、図面を参照しながら説
明する。第２・図は本発明の一実施例におけるサーマル
ヘッドの断面図を示すものである。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The second figure shows a sectional view of a thermal head in an embodiment of the present invention.

第２図において、１はアルミナ基板、２ａ、は突起形状
の高さが７０μｍ〜１２０μｍのグレーズ層、７はＮｉ
−０ｒにッケルクローム）を使用した発熱抵抗体、４ａ
、−，４ｂは導電体、８　ｔｄ　Ｓ　ｉ、ｑ　（炭化ケ
イ素）を使用した保護膜である。In FIG. 2, 1 is an alumina substrate, 2a is a glaze layer with a protrusion height of 70 μm to 120 μm, and 7 is a Ni
-0r heating resistor using Kkelchrome), 4a
, -, 4b is a protective film using a conductor, 8 td Si,q (silicon carbide).

以上のように構成されたサーマルヘッドについて、以下
その動作について説明する。印字する場合、まず導電体
４ａ、Ａｂ間に電圧が発生し、抵６ページ 抗係数が一３ｐｐｍ／’Ｃ〜３ｐｐｍ／’Ｃと安定して
いて、印字ドツト周期０．９　ｍ５ｅｃ　ｘｏ、６ｙｌ
ｓｅｃの印字をした場合、サーマルヘッドの表面温度が
６００℃〜７０Ｃ）℃の高温になっても抵抗値が安定し
ているＮｉ−０ｒにッケルクローム）を使用した発熱抵
抗体７に電流が流れ、発熱抵抗体７が発熱する。次に発
熱抵抗体了から発生した熱が。The operation of the thermal head configured as described above will be explained below. When printing, a voltage is first generated between the conductors 4a and Ab, and the resistance coefficient is stable at 13 ppm/'C to 3 ppm/'C, and the printing dot period is 0.9 m5ec xo, 6yl.
When printing sec, a current flows through the heating resistor 7, which is made of Ni-0r (nickel chrome), which has a stable resistance value even when the surface temperature of the thermal head reaches a high temperature of 600°C to 70°C. The heating resistor 7 generates heat. Next is the heat generated from the heating resistor.

耐雫耗性に優れて！るＳｉＣ（炭化ケイ素）を使用した
保護膜８に伝導して記録紙叩方向へ伝導されるものと、
グレーズ層２ａに伝導してアルミナ基板１へ伝導される
ものとに別れるが、グレーズ層２ａの突起形状の高さが
７０μｍ７１．２０μｍと高いため、発熱抵抗体７から
発生した熱がグレーズ層２ａに蓄熱され、その蓄熱が印
字に利用される。よって印字ドツト周期０．９　ｍ５ｅ
ｃ〜０．６ｍ５ｅｃの印字に必要な印加エネルギが０．
４ｍｊ−０，５ｙｙ１ｊ艷低下し、サーマルヘッドの寿
命も１×１０ハルス以上を満たすことができる。Excellent drop abrasion resistance! one that is conducted to the protective film 8 made of SiC (silicon carbide) and is conducted in the direction of hitting the recording paper;
The heat generated from the heat generating resistor 7 is conducted to the glaze layer 2a and is conducted to the alumina substrate 1 because the height of the protrusion shape of the glaze layer 2a is as high as 70 μm and 71.20 μm. Heat is stored, and the stored heat is used for printing. Therefore, the printing dot period is 0.9 m5e
The applied energy required for printing c~0.6m5ec is 0.
The life of the thermal head can be reduced by 4mj-0.5yy1j, and the life span of the thermal head can satisfy 1×10 Hals or more.

第３図は、印字ドツト周期０．９　ｍ、ｓｅｃでサーマ
ルヘッド寿命試験結果を示したものである。横軸７ペー
ジ はサーマルヘッド印加エネルギ、縦軸はサーマルヘッド
寿命パルスを示している。本発明のサーマルヘッドの寿
命を示したものはａで、従来のサーマルヘッドの寿命を
示したものはｂである。この図より本発明のサーマルヘ
ッドの寿命は、従来のサーマルヘッドの寿命より非常に
長いことが判る。FIG. 3 shows the results of a thermal head life test with a printing dot period of 0.9 m, sec. The horizontal axis on page 7 shows the energy applied to the thermal head, and the vertical axis shows the thermal head life pulse. A shows the lifespan of the thermal head of the present invention, and b shows the lifespan of the conventional thermal head. From this figure, it can be seen that the life of the thermal head of the present invention is much longer than that of the conventional thermal head.

発明の効果 以上のように本発明は、グレーズ層の突起形状の高さを
高くし、かつ前記発熱抵抗体材料にＮｉ　−Ｏｒ　　に
ソケルクローム）を、前記保護膜材料にＳｉＣ（炭化ケ
イ素）をそれぞれ用いることにより、印字ドツト周期０
．９　ｍ５ｅｃ　〜０．６　ｍ５ｅｃの印字が低印加エ
ネルギで可能で、かつ１×１０ハルス以上の寿命がある
サーマルヘッドを提供することができ、その実用的効果
は太々るものがある。Effects of the Invention As described above, the present invention increases the height of the protrusion shape of the glaze layer, and uses Ni-Or (Sokel chrome) as the heating resistor material and SiC (silicon carbide) as the protective film material. By using the printing dot period 0
．． It is possible to provide a thermal head that is capable of printing from 9 m5ec to 0.6 m5ec with low applied energy and has a life of 1×10 Hals or more, and its practical effects are significant.

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

第１図は従来のサーマルヘッドの断面図、第２図は本発
明の一実施例におけるサーマルヘッドの断面図、第３図
は本発明の詳細な説明するための特性図である。 １・・・・・・アルミナ基板、２ａ・・・・・・グレー
ズ層、４ａ、４ｂ・・・・・・導電体、７・・・・・・
発熱抵抗体（Ｎｉ−Ｏｒ）、８・・・・・・保護膜（５
ｉｎ）。FIG. 1 is a sectional view of a conventional thermal head, FIG. 2 is a sectional view of a thermal head according to an embodiment of the present invention, and FIG. 3 is a characteristic diagram for explaining the present invention in detail. 1... Alumina substrate, 2a... Glaze layer, 4a, 4b... Conductor, 7...
Heat generating resistor (Ni-Or), 8... Protective film (5
in).

Claims (1)

【特許請求の範囲】[Claims] 基板上に部分的に形成された突起形状のグレーズ層と、
このグレーズ層および前記基板上に選択的に形成された
発熱抵抗体と、この発熱抵抗体上に形成された前記発熱
抵抗体を発熱させるための導電体と、前記発熱抵抗体お
よび前記導電体上に形成された保護膜とを備え、前記グ
レーズ層の突起形状の高さを７０μｍ〜１２０μｍとし
、かつ前記発熱抵抗体材料にＮｉ−Ｃｒ（ニッケルクロ
ーム）を、前記保護膜材料にＳｉＣ（炭化ケイ素）をそ
れぞれ用いたことを特徴とするサーマルヘッド。a protrusion-shaped glaze layer partially formed on the substrate;
A heating resistor selectively formed on the glaze layer and the substrate; a conductor formed on the heating resistor for causing the heating resistor to generate heat; and a conductor formed on the heating resistor and the conductor. the height of the protrusion shape of the glaze layer is 70 μm to 120 μm, and the heating resistor material is made of Ni-Cr (nickel chromium), and the protective film material is made of SiC (silicon carbide). ).
JP59243625A 1984-11-19 1984-11-19 Thermal head Pending JPS61121964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59243625A JPS61121964A (en) 1984-11-19 1984-11-19 Thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59243625A JPS61121964A (en) 1984-11-19 1984-11-19 Thermal head

Publications (1)

Publication Number Publication Date
JPS61121964A true JPS61121964A (en) 1986-06-09

Family

ID=17106606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59243625A Pending JPS61121964A (en) 1984-11-19 1984-11-19 Thermal head

Country Status (1)

Country Link
JP (1) JPS61121964A (en)

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