JPS61121966A - Thermal head - Google Patents

Thermal head

Info

Publication number
JPS61121966A
JPS61121966A JP59243627A JP24362784A JPS61121966A JP S61121966 A JPS61121966 A JP S61121966A JP 59243627 A JP59243627 A JP 59243627A JP 24362784 A JP24362784 A JP 24362784A JP S61121966 A JPS61121966 A JP S61121966A
Authority
JP
Japan
Prior art keywords
printing
thermal head
glaze layer
heat
generating 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
JP59243627A
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 JP59243627A priority Critical patent/JPS61121966A/en
Publication of JPS61121966A publication Critical patent/JPS61121966A/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 at a printing dot cycle of 0.9-0.6msec, by forming a glaze layer having a protruded shape with a height of 70-120mum, a heat generating resistor, a conductor and a protective layer comprising SiC to a substrate. CONSTITUTION:At the time of printing, voltage is generated between conductors 4a, 4b at first and a current is flowed to a heat generating resistor 7 to allow said heat generating resistor 7 to generate heat. Next, heat generated from the heat generating resistor 7 is conducted not only to a protective film 8 using SiC excellent in abrasion resistance to be conducted to the direction of the surface of recording paper but also to the glaze layer 2a to be conducted to an alumina substrate 1. 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 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、特に印字中の印字
音が小さいノンインパクトタイプの感熱２ベーノ 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
。Configuration of conventional examples and their problems In recent years, printing devices have become widespread, and in particular, non-impact type thermal 2-benzo 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、上述したような従来のサーマ
ルヘッドについて説明する。The conventional thermal head as 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　、４ｂ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、５は発熱抵抗体３
および導電体４ａ、４ｂ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 Figure 1, 1 is an alumina substrate, 2 is an alumina substrate 1
3 is a heating resistor formed on the glaze layer 2 and the alumina substrate 1; 4a and 4b are heating resistors 3 formed on the heating resistor 3; A conductor for generating heat, 5 is a heating resistor 3
and an oxidation-resistant layer formed on the conductors 4a and 4b, and 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
耐酸化層としてＳｉＯ（−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。またグレーズ層の突
起形状の高さが４０μｍ〜６ｏμ可である。これらの構
成によるサーマルヘッドで印字ドツト周期が２．４　ｍ
５ｅｃ〜１．２ｍ５ｅＣの３ページ 低速印字で印字させる場合、印字文字として印字　”ネ
ルギはｏ、４ｍｊ程度゛で、そのときの　サーマルヘッ
ドの表面温度も３００℃〜４００℃と低く、サーマルヘ
ッドの寿命も１×１０８パルス以上ある。This conventional thermal head uses SiO (-silicon oxide) and 5i02 (silicon dioxide) as the commonly used oxidation-resistant layer, and Ta203 (tantalum pentoxide) as the wear-resistant layer. Further, the height of the protrusion shape of the glaze layer may be 40 μm to 6 μm. A thermal head with these configurations has a printing dot period of 2.4 m.
When printing 3 pages at a low speed of 5ec to 1.2m5eC, the energy to print as printed characters is about 0.4mj, and the surface temperature of the thermal head at that time is also low at 300℃ to 400℃, and the lifespan of the thermal head is low. There are also more than 1×108 pulses.

しかりながら印字ドツト周期が０．９　ｍ５ｅＣ〜０，
６Ｂｓｅｃ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０．６ｍｊ以上となり、そのときのサーマルヘ
ッドの表面温度も６００℃〜７００　’Ｃと１高（温に
々るため、発熱抵抗体の亀裂や耐酸化層、耐摩耗層の剥
離が生じてしまい、サーマルヘッドの寿命もＩＸ、１０
７パルス未満になシ、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。However, the printing dot period is 0.9 m5eC~0,
When printing at a high speed of 6Bsec, the energy required to be applied to the thermal head when it becomes possible to print characters is 0.6 mj or more, and the surface temperature of the thermal head at that time is also 600°C to 700'C, which is 1 high. (Due to the high temperature, cracks in the heating resistor and peeling of the oxidation-resistant layer and wear-resistant layer occur, reducing the lifespan of the thermal head.)
If it is less than 7 pulses, it does not satisfy the lifespan of a thermal head of 1×10 8 pulses or more, which is considered to be normally usable, so 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　〜０．６ｍ５ｅＣの印字が可能で、かつ１×１０８
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.
c ~0.6m5eC printing possible and 1×108
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
さを７０Ｉｉｍ〜・１２０μｍとし、保護膜材料にＳｉ
Ｃｉ　　（炭化ケイ素）を使用りだものである。, Structure of the Invention To achieve this object, the thermal head of the present invention has the following features:
The height of the protrusion shape of the glaze layer partially formed on the substrate is set to 70Iim to 120μm, and Si is used as the protective film material.
It uses Ci (silicon carbide).

この構成により、発熱抵抗体で発熱した熱はグレーズ層
の高さが７０μｍ〜１２０μｍあるグレ−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００．９　ｍ５ｅｃ−０，ｅ　ｍ５ｅＣの印字に必要
外印加エネルギがｏ、４ｍｊ−ｏ、６ｍｊ（／ｊ低下す
る。かつ一般的に耐摩耗性に優れているＳ’ｉＣ（炭化
′ケイ素）を使用することによシ、印字ドツト周期０．
９　ｍ５ｅｃ〜０．６ｍ５ｅＣの印字をした場合、サー
マルヘッドの寿命が１×１０８ハルス以上を満たすこと
となる。With this configuration, the heat generated by the heating resistor is stored in the glaze layer, which has a height of 70 μm to 120 μm, and since the stored heat is used for printing, the printing dot period is 00.9 m5ec-0, Unnecessary applied energy for printing e m5eC is reduced by o, 4mj-o, 6mj (/j). Also, by using S'iC (silicon carbide), which generally has excellent wear resistance, Print dot period 0.
When printing at 9 m5ec to 0.6m5eC, the life of the thermal head satisfies 1 x 108 Hals 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９１層にになり
、製造工程力（１’ｌｌＪ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 number of layers is reduced to 91, reducing the manufacturing process power (1'llJ) and shortening the manufacturing time. In addition, it is possible to reduce the cost of the thermal head.

５べ一７′ 実施例の説明　　　　　　　　　　　　　　、以下本発
明の一実施例について、図面を参照しながら説明する。5B-7' Description of Embodiment An embodiment of the present invention will be described below with reference to the drawings.

第２７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。FIG. 27 shows a sectional view of a thermal head in an embodiment of the present invention.

第２図にセいて、１はアルミナ基板、２ａは突起形状の
高さが７０μｍ〜１２０μｍのグレーイ層、７はＮ、ニ
ーＯｒにッケルクローム）を使用し乍発熱抵抗体、４ａ
、％、ｔ）は導電体、５８はＳ、ｉ　Ｃ（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 gray layer with a protruding height of 70 μm to 120 μm, 7 is a heat generating resistor using N, Knickel chrome), and 4 a
, %, t) is a conductor, 58 is S, iC (silicon carbide)
It is a protective film using ,.

早上のように構成されたサー、フル５ヘツドニ？イて、
以下その動作について、説明する。印字す条場合、まず
導電体４ａ、、４層間、に電圧が発生し、７発熱抵坑体
７３に、電流が流れ、発熱抵抗体７が発熱する。次に発
熱抵抗体７から発生し、冬熱が、耐摩郷性に優れてい、
るＳｉ、Ｃ（炭化ケイ素）を、使用した保護膜８に、伝
導し、て記録紙面方向へ伝、導されるものと１、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３が、グレーズ層２４．の凸状、突、膜形状の
高さが７０μｍ〜１２０μｍと高いため、発熱抵抗体７
から発生した熱がグレーズ層６ベ　パ ２ａに蓄熱され、その蓄熱が印字に利用される。Sir configured as above, full 5 heads? Cum,
The operation will be explained below. When printing a strip, a voltage is first generated between the conductors 4a and 4 layers, current flows through the heating resistor 73, and the heating resistor 7 generates heat. Next, winter heat is generated from the heating resistor 7, which has excellent wear resistance.
One type conducts Si and C (silicon carbide) to the protective film 8 used and is transmitted in the direction of the recording paper surface, and the other type conducts it to the glaze layer 2a and conducts it to the alumina substrate 1. The third layer is the glaze layer 24. Because the height of the convex, protruding, and film shape is as high as 70 μm to 120 μm, the heating resistor 7
The heat generated from the glaze layer 6 is stored in the paper 2a, and the stored heat is used for printing.

よって印字ドツト周期Ｑ、９ＨＩＳｅｆ〜０．６ｍ５ｅ
Ｃの印字に必要な印加エネルギが０．４　ｍｊ　ｙｏ、
５　ｍｊに低下し、サーマルヘッドの寿命も１×１０８
パルス以上を、満たすことができる。Therefore, the printing dot period Q is 9HISef~0.6m5e
The applied energy required to print C is 0.4 mj yo,
5 mj and the life of the thermal head is 1×108
More than a pulse can be filled.

第３図は、印字ドラ、ト周期０．．９　ｍ５ｅｃでサー
マルヘッド寿命試験結果４を示したものである。横軸は
サーマノー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 a printing driver with a period of 0. ．． This shows the thermal head life test result 4 at 9 m5ec. The horizontal axis 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 １．以上のように、本発明は、グレーズ、層の突起形状
の高さを７０μｍ〜１２０μｍとし、かつ前記保護膜材
料に５ｉｎ（炭化ケイ素）を用いることにより、印字ド
ツト周期、、０．９゜ｍ５ｅｃ〜○、ｅ、ｍ５ｅｃの印
字が低印加エネルギで可能で、かつ１×１０８パルス以
上の寿命があるサーマルヘッドを提供することができ、
アベーノ その実用的効果は大なるものがある。Effects of invention 1. As described above, in the present invention, by setting the height of the protrusion shape of the glaze layer to 70 μm to 120 μm and using 5 inches (silicon carbide) as the protective film material, the printing dot period can be increased to 0.9° m5ec. ~ We can provide a thermal head that can print ○, e, m5ec with low applied energy and has a lifespan of 1 x 108 pulses or more,
Abeno has great practical effects.

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

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、８・・・・・・保設膜（ＳｉＣ）。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 を 第２図 ρFIG. 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, 8... Storage film ( SiC). Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 ρ

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
、かつ前記保護膜材料にＳｉＣ（炭化ケイ素）を用いた
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. A thermal head comprising: a protective film formed on the glaze layer, wherein the height of the projection shape of the glaze layer is 70 μm to 120 μm, and SiC (silicon carbide) is used as the material of the protective film.
JP59243627A 1984-11-19 1984-11-19 Thermal head Pending JPS61121966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59243627A JPS61121966A (en) 1984-11-19 1984-11-19 Thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59243627A JPS61121966A (en) 1984-11-19 1984-11-19 Thermal head

Publications (1)

Publication Number Publication Date
JPS61121966A true JPS61121966A (en) 1986-06-09

Family

ID=17106635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59243627A Pending JPS61121966A (en) 1984-11-19 1984-11-19 Thermal head

Country Status (1)

Country Link
JP (1) JPS61121966A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6137520A (en) * 1997-07-17 2000-10-24 Fuji Photo Film Co., Ltd. Thermal head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6137520A (en) * 1997-07-17 2000-10-24 Fuji Photo Film Co., Ltd. Thermal head

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