JPH05318796A - Thermal head - Google Patents

Thermal head

Info

Publication number
JPH05318796A
JPH05318796A JP13351592A JP13351592A JPH05318796A JP H05318796 A JPH05318796 A JP H05318796A JP 13351592 A JP13351592 A JP 13351592A JP 13351592 A JP13351592 A JP 13351592A JP H05318796 A JPH05318796 A JP H05318796A
Authority
JP
Japan
Prior art keywords
heat generating
heating elements
heating
thermal head
high heat
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.)
Withdrawn
Application number
JP13351592A
Other languages
Japanese (ja)
Inventor
Yuuji Nagahamaya
祐二 長浜谷
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 JP13351592A priority Critical patent/JPH05318796A/en
Publication of JPH05318796A publication Critical patent/JPH05318796A/en
Withdrawn legal-status Critical Current

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Abstract

PURPOSE:To perform printing of good quality improved in the cutting of ink by improving the heat distribution in the direction perpendicular to the arrangement direction of heating elements. CONSTITUTION:Respective heating elements 3A are divided into a plurality of regions in the direction perpendicular to the arrangement direction of the heating elements 3A and at least one of the material quality and thickness in at least adjacent regions and a plurality of high heatiang parts 3a are generated in the direction perpendicular to the arrangement direction of the heating elements 3A by the supply of a current so as to leave an interval and the areas of the skirt parts of the high heating parts 3a not becoming high temp. are reduced. The heat distribution in the direction perpendicular to the arrangement direction of the heating elements 3A is improved up to the end parts of the heating elements 3A to perform printing of good quality improved in the cutting of ink.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【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係り、特に、その発熱素子に
おける発熱の改良に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal head used in a thermal printer, and more particularly to improvement of heat generation in its heating element.

【0002】[0002]

【従来の技術】サーマルプリンタに搭載するサーマルヘ
ッドは、例えば複数個の発熱素子を絶縁性基板上に蓄熱
層を介して直線的に整列配置し、情報に従ってこの発熱
素子を選択的に通電加熱させて、感熱記録紙に発色記録
させるか、あるいはインクリボンを介して普通紙に転写
記録するために用いられる。
2. Description of the Related Art A thermal head mounted on a thermal printer has, for example, a plurality of heating elements arranged linearly on an insulating substrate via a heat storage layer and selectively heats the heating elements in accordance with information. It is used for color recording on thermal recording paper or transfer recording on plain paper via an ink ribbon.

【0003】図4に示すように、セラミック基板等の絶
縁性基板1上には、蓄熱層として機能するガラスからな
るグレーズ層2が形成されており、このグレーズ層2は
発熱抵抗体層3の形成予定領域に、上面の断面が円弧状
のものとして部分的に形成されている。
As shown in FIG. 4, a glaze layer 2 made of glass which functions as a heat storage layer is formed on an insulating substrate 1 such as a ceramic substrate. The upper surface is partially formed as an arcuate cross section in the planned formation region.

【0004】このグレーズ層2の頂部にはTa2 N等か
らなる複数個の発熱素子3Aが、前記グレーズ層2上に
積層した発熱抵抗体層3をフォトリソ技術によって細分
化して、複数個直線状に配置・形成されている。
A plurality of heating elements 3A made of Ta 2 N or the like are formed on the top of the glaze layer 2. The heating resistor layer 3 laminated on the glaze layer 2 is subdivided by a photolithography technique to form a plurality of linear elements. It is located and formed in.

【0005】前記各発熱素子3Aの両端部上には、さら
に、各発熱素子3Aに対して給電するための電極4が形
成されている。この電極4は、例えばAl、Al−C
u、Cr−Cu、Cu等からなるもので、層状に重積し
たものからフォトリソ技術により所望形状のパターンに
形成され、各発熱素子3Aの両側にそれぞれ一方が共通
電極4aとして、また他方が個別電極4bとして導出さ
れている。この対を成す共通電極4aおよび個別電極4
b間において、1ドット相当分の発熱領域を形成された
発熱素子3Aは、前記両電極4a,4b間に電圧を印加
することによって発熱される。
Electrodes 4 for supplying electric power to each heating element 3A are further formed on both ends of each heating element 3A. This electrode 4 is made of, for example, Al or Al-C.
u, Cr-Cu, Cu, etc., which are stacked in layers to form a pattern of a desired shape by a photolithography technique, one on each side of each heating element 3A as a common electrode 4a, and the other individually. It is led out as the electrode 4b. This pair of common electrode 4a and individual electrode 4
The heating element 3A, in which a heating area corresponding to one dot is formed between b, is heated by applying a voltage between the electrodes 4a and 4b.

【0006】また、前述した発熱素子3Aおよび電極4
上には、これらの発熱素子3Aおよび電極4を保護する
薄膜の保護層5が形成されている。この保護層5は、絶
縁性基板1上に前記各電極4と一体に形成され外部回路
(TAB、FPC)との接続のために使用される接続端
子以外のヘッド面を覆っている。
Further, the above-mentioned heating element 3A and electrode 4
A thin protective layer 5 for protecting the heating elements 3A and the electrodes 4 is formed on the upper surface. The protective layer 5 is formed integrally with the electrodes 4 on the insulating substrate 1 and covers the head surface other than the connection terminals used for connection with external circuits (TAB, FPC).

【0007】さらに、隣位の1対の発熱素子3A、3A
間には、図5に示すように、隣位の1対の個別電極4
b,4b間の間隙6と連通する間隙7が形成されてお
り、各間隙7は、各発熱素子3Aの横幅と等しい長さに
形成されている。すなわち、前記両電極4a,4b間に
露出している各発熱素子3Aは、各間隙7によって隣位
の発熱素子3Aと完全に分割されている。
Further, a pair of adjacent heating elements 3A, 3A
In between, as shown in FIG. 5, a pair of adjacent individual electrodes 4
A gap 7 communicating with the gap 6 between b and 4b is formed, and each gap 7 has a length equal to the lateral width of each heating element 3A. That is, each heating element 3A exposed between the electrodes 4a and 4b is completely divided from the adjacent heating element 3A by each gap 7.

【0008】[0008]

【発明が解決しようとする課題】ところで、前述した従
来のものにおいては、各発熱素子3Aの全体が単一の材
質ならびに厚さに形成されていたので、各発熱素子3A
の発熱分布は、図6に示すように、中央部にひとつの高
発熱部が形成されるのみであった。しかも、この高発熱
部のふもと部分はなだらかな曲線を描いているため、高
発熱部の範囲が狭かった。このため、各発熱素子3Aの
整列方向に直交する方向における発熱素子3Aの端部は
高温になりにくく、したがって、このサーマルヘッドを
熱転写プリンタに使用すると、インクリボンから剥離さ
れるインクの溶融状態が部分的に十分ではなかった。こ
の結果、インクリボンのインクのうち、剥離して用紙に
転写される部位とインクリボンに残置される部位との切
れが悪くなり、印字品質が悪くなっていた。
By the way, in the above-described conventional device, each heating element 3A is formed of a single material and has a single thickness, and therefore each heating element 3A is formed.
As shown in FIG. 6, the heat generation distribution of No. 1 was such that only one high heat generation portion was formed in the central portion. Moreover, since the foot of the high heat generating part has a gentle curve, the range of the high heat generating part was narrow. Therefore, the end portions of the heating elements 3A in the direction orthogonal to the alignment direction of the heating elements 3A are unlikely to reach a high temperature. Therefore, when this thermal head is used in a thermal transfer printer, the melted state of the ink peeled from the ink ribbon is Partly not enough. As a result, in the ink of the ink ribbon, the part that is peeled off and transferred to the paper and the part that is left on the ink ribbon are not easily cut, and the printing quality is poor.

【0009】すなわち、図7に示すように、インクの切
れが悪いため、用紙に印字された文字8の印字方向にお
ける下流側の輪郭が直線にならず乱れてしまい、印字品
質が悪くなっていた。
That is, as shown in FIG. 7, since the ink runs out poorly, the outline of the character 8 printed on the paper on the downstream side in the printing direction is not a straight line and is disturbed, resulting in poor printing quality. ..

【0010】本発明は、このような従来のものにおける
問題点を克服し、発熱素子の整列方向と直交する方向に
おける熱分布を良好にして、インクの切れのよい良好な
品質の印字を行うことのできるサーマルヘッドを提供す
ることを目的とする。
The present invention overcomes the above-mentioned problems in the prior art, improves the heat distribution in the direction orthogonal to the alignment direction of the heating elements, and prints with good ink quality and good quality. It is an object of the present invention to provide a thermal head capable of

【0011】[0011]

【課題を解決するための手段】前記目的を達成するため
本発明のサーマルヘッドは、絶縁性基板上に蓄熱層を設
け、この蓄熱層上に、複数個の発熱素子を配置するとと
もに、前記蓄熱層上に、前記発熱素子に給電する共通給
電体および個別給電体からなる電極を配置してなるサー
マルヘッドにおいて、各発熱素子が発熱素子の整列方向
に直交する方向に間隔をおいて複数個の高発熱部を生じ
るように、各発熱素子を発熱素子の整列方向に直交する
方向における複数の部位に区画し、少なくとも隣接する
部位において材質および厚さの少なくとも一方を異なら
せたことを特徴としている。
In order to achieve the above object, a thermal head of the present invention is provided with a heat storage layer on an insulating substrate, and a plurality of heat generating elements are arranged on the heat storage layer, and the heat storage layer is provided. In a thermal head in which electrodes made up of a common power feeding body and individual power feeding bodies for feeding the heating elements are arranged on a layer, each heating element is provided with a plurality of elements at intervals in a direction orthogonal to the alignment direction of the heating elements. Each heating element is divided into a plurality of parts in a direction orthogonal to the alignment direction of the heating elements so as to generate a high heat generating part, and at least one of the material and the thickness is made different at least in the adjacent parts. ..

【0012】[0012]

【作用】前述した構成からなる本発明のサーマルヘッド
によれば、通電により各発熱素子の整列方向に直交する
方向に間隔をおいて複数個の高発熱部が生じるので、高
温とならない高発熱部のふもとの部分の面積を小さくす
ることができ、発熱素子の整列方向に直交する方向にお
ける熱分布を発熱素子の端部まで良好にして、インクの
切れのよい良好な品質の印字を行うことができる。
According to the thermal head of the present invention having the above-mentioned structure, a plurality of high heat generating portions are formed at intervals in the direction orthogonal to the direction of arrangement of the heat generating elements by energization. It is possible to reduce the area of the bottom part of the heating element, improve the heat distribution in the direction orthogonal to the direction in which the heating elements are aligned up to the ends of the heating elements, and print with good ink quality. it can.

【0013】[0013]

【実施例】以下、本発明の実施例を図面に示す実施例に
より説明する。なお、前述した従来のものと同一部分に
は同一符号をもって説明する。
Embodiments of the present invention will be described below with reference to the embodiments shown in the drawings. The same parts as those of the above-mentioned conventional device will be described with the same reference numerals.

【0014】図1は本発明のサーマルヘッドの実施例を
を示す平面図であり、本実施例のサーマルヘッドは、従
来のものと同様、絶縁性基板1上に形成されたグレーズ
層2上にフォトリソ技術によって整列状に配列・形成さ
れた複数個の発熱素子3A…の各一側上には共通電極4
aが積層されており、また、発熱素子3Aの他側上に
は、複数本の個別電極4b,4b…が相互に間隙6をも
って積層されている。
FIG. 1 is a plan view showing an embodiment of the thermal head of the present invention. The thermal head of the present embodiment is similar to the conventional thermal head on the glaze layer 2 formed on the insulating substrate 1. A common electrode 4 is provided on each side of the plurality of heating elements 3A ... Arranged and formed in an array by the photolithography technique.
a is stacked, and on the other side of the heating element 3A, a plurality of individual electrodes 4b, 4b ... Are stacked with a gap 6 therebetween.

【0015】そして、本発明のサーマルヘッドにおいて
は、前記発熱素子3Aは、その整列方向に直交する方向
においてその材質および厚さの少なくとも一方を異にす
るように形成されている。
In the thermal head of the present invention, the heating element 3A is formed so that at least one of its material and thickness is different in the direction orthogonal to its alignment direction.

【0016】すなわち、図1および図2に示すように、
発熱素子3Aは発熱素子3Aの整列方向に直交する方向
に3分割されており、電気抵抗値の高い材質からなる高
発熱部3aが、電気抗値の低い材質からなる低発熱部3
bを介するように電極4と接続される両端に配置され、
これにより、1つの発熱素子3Aに2つの高発熱部3
a,3aが、発熱素子3Aの整列方向に直交する方向に
間隔を隔てて形成されることになる。
That is, as shown in FIGS. 1 and 2,
The heat generating element 3A is divided into three in a direction orthogonal to the alignment direction of the heat generating elements 3A, and the high heat generating portion 3a made of a material having a high electric resistance value and the low heat generating portion 3 made of a material having a low electric resistance value.
arranged at both ends connected to the electrode 4 via b,
As a result, one heating element 3A has two high heat generating parts 3
The a and 3a are formed at intervals in the direction orthogonal to the alignment direction of the heating elements 3A.

【0017】この発熱素子3Aを発熱素子3Aの整列方
向に直交する方向に3分割した場合の、1対の高発熱部
3a,3aおよび低発熱部3bのそれぞれの幅を一側端
よりW1,W2,W3とすると、高発熱部3aの幅:W
1=高発熱部3aの幅:W3、低発熱部3bの幅:W2
≠0、高発熱部3aの幅:W1≧低発熱部3bの幅:W
2となるように形成されている。
When the heating element 3A is divided into three in the direction orthogonal to the alignment direction of the heating elements 3A, the width of each of the pair of high heating portions 3a, 3a and low heating portion 3b is W1 from one end. Assuming W2 and W3, the width of the high heat generating portion 3a: W
1 = width of high heat generating portion 3a: W3, width of low heat generating portion 3b: W2
≠ 0, width of high heat generating part 3a: W1 ≧ width of low heat generating part 3b: W
It is formed so as to be 2.

【0018】ここにおいて、両高発熱部3a,3aの幅
が等しいというW1=W3の条件を満たさない場合は両
高発熱部3a,3aの温度が相互に変わってしまい、1
ドットの形状が歪になる。
If the condition of W1 = W3 that the widths of the high heat generating portions 3a and 3a are equal is not satisfied, the temperatures of the high heat generating portions 3a and 3a change from each other and 1
Dot shape becomes distorted.

【0019】また、低発熱部3bの幅:W2=0の場合
は従来と同様に1つの高発熱部しか得られないことにな
ってしまい、従来と同様の温度分布になってしまう。さ
らに、低発熱部3bの幅:W2があまり広いと、両高発
熱部3a,3aが、それぞれ独立した発熱素子を構成し
てしまうことになり、この場合も従来と同様の温度分布
になってしまう。したがって、低発熱部3bとしては、
太からず細からずといったある程度の幅に設定する必要
がある。
When the width of the low heat generating portion 3b is W2 = 0, only one high heat generating portion can be obtained as in the conventional case, and the temperature distribution becomes the same as in the conventional case. Further, if the width W2 of the low heat-generating portion 3b is too wide, the both high heat-generating portions 3a, 3a will constitute independent heat-generating elements, and in this case as well, the temperature distribution will be the same as the conventional one. I will end up. Therefore, as the low heat generation part 3b,
It is necessary to set the width to some extent, such as not thick or thin.

【0020】さらにまた、高発熱部3aの幅:W1<低
発熱部3bの幅:W2とすると、中心部の温度が低いた
め、各発熱素子3Aの1ドット全体の温度が低くなり過
ぎることになってしまう。
Further, if the width of the high heat generating portion 3a is W1 <the width of the low heat generating portion 3b: W2, the temperature of the central portion is low, so that the temperature of one dot of each heat generating element 3A becomes too low. turn into.

【0021】また、高発熱部3aおよび低発熱部3bに
おける電気抵抗値の比は1<3a/3b≦100の範囲
内が好ましい。すなわち、この比が1以下であると、従
来と同様の高発熱部3aが発熱素子3Aの整列方向に直
交する方向の中央部に1つのパターンとなって生じるこ
とと同様になってしまうし、一方、100以上では中心
部の温度が低すぎることとなってしまうからである。そ
して、この範囲内でも、2≦3a/3b≦10の範囲内
が印字品質のうえで特に好ましい。
The ratio of the electric resistance values of the high heat generating portion 3a and the low heat generating portion 3b is preferably within the range of 1 <3a / 3b≤100. That is, if this ratio is 1 or less, it becomes similar to the case where the high heat generating portion 3a similar to the conventional one is formed as one pattern in the central portion in the direction orthogonal to the alignment direction of the heat generating elements 3A, On the other hand, if it is 100 or more, the temperature of the central portion becomes too low. Within this range, the range of 2 ≦ 3a / 3b ≦ 10 is particularly preferable in terms of print quality.

【0022】つぎに、発熱素子3Aの高発熱部3aと低
発熱部3bの材質についてみると、例えば、高発熱部3
a、低発熱部3bをともに厚さ約2000A(オングス
トローム)とし、高発熱部3aにTa-SiO2 を用いる
と抵抗値は約1600Ωとなり、発熱部3bにTa-N等
を用いると抵抗値は約400Ωとなる。すると、高発熱
部3aおよび低発熱部3bにおける電気抵抗値の比は4
となり、前述した特に好ましい範囲2≦3a/3b≦1
0の条件を充足することになる。
Next, regarding the materials of the high heat generating portion 3a and the low heat generating portion 3b of the heat generating element 3A, for example, the high heat generating portion 3
a and the low heat generating part 3b both have a thickness of about 2000 A (angstrom), and Ta-SiO 2 is used for the high heat generating part 3a, the resistance value is about 1600Ω, and Ta-N is used for the heat generating part 3b. It becomes about 400Ω. Then, the ratio of the electric resistance values of the high heat generating portion 3a and the low heat generating portion 3b is 4
Therefore, the above-mentioned particularly preferable range 2 ≦ 3a / 3b ≦ 1
The condition of 0 will be satisfied.

【0023】つぎに、前述した構成からなる本実施例の
作用について説明する。
Next, the operation of this embodiment having the above-mentioned structure will be described.

【0024】図2は、発熱素子3Aの発熱分布を示す平
面図およびグラフであり、図2の発熱素子3Aの各高発
熱部3a,3a上にほぼ多重楕円状に記載されているの
は、この発熱素子3Aへ通電を行ったときの温度分布を
示しており、その中心部ほど高温になっている。また、
発熱素子3Aの右方ならびに下方に示されている曲線
は、この方向からの発熱素子3Aにおける発熱分布を示
すものである。
FIG. 2 is a plan view and a graph showing the heat generation distribution of the heat generating element 3A. What is written in a substantially elliptical shape on each of the high heat generating portions 3a, 3a of the heat generating element 3A of FIG. The temperature distribution when the heating element 3A is energized is shown, and the temperature becomes higher toward the center. Also,
The curves shown to the right and below the heating element 3A show the heat generation distribution in the heating element 3A from this direction.

【0025】図2に示すように、各発熱素子3Aに電気
抵抗値が大きい高発熱部3aを複数個形成することによ
って、発熱素子3Aの下方に示す曲線から明らかなよう
に、発熱素子3Aの両高発熱部3a,3a間に位置する
低発熱部3bにも印字に共しうる程度の発熱が生じるば
かりでなく、発熱素子3Aの整列方向に直交する方向に
おける発熱素子3Aの両端部まで高温の発熱が得られる
こととなる。したがって、このサーマルヘッドを熱転写
プリンタに使用すると、インクリボンから剥離されるイ
ンクの溶融状態がその端部においても十分になり、この
結果、インクリボンのインクのうち、剥離して用紙に転
写される部位とインクリボンに残置される部位との切れ
が良好になり、印字品質がよくなる。
As shown in FIG. 2, by forming a plurality of high heat generating portions 3a having a large electric resistance value in each heat generating element 3A, as is apparent from the curve below the heat generating element 3A, the heat generating element 3A Not only does the low heat-generating portion 3b located between the high heat-generating portions 3a and 3a generate heat to the extent that printing can be performed, but also a high temperature is reached up to both ends of the heat-generating element 3A in a direction orthogonal to the alignment direction of the heat-generating elements 3A. Will generate heat. Therefore, when this thermal head is used in a thermal transfer printer, the melted state of the ink peeled from the ink ribbon is sufficient even at the end portion, and as a result, the ink of the ink ribbon is peeled and transferred to the paper. The cut between the part and the part left on the ink ribbon is good, and the printing quality is good.

【0026】すなわち、図3に示すように、インクの切
れがよいため、用紙に印字された文字8の印字方向にお
ける下流側の輪郭が乱れることなく直線状になり、良好
な印字品質を維持することができる。
That is, as shown in FIG. 3, since the ink runs out well, the contour of the character 8 printed on the paper on the downstream side in the printing direction becomes straight without being disturbed, and good printing quality is maintained. be able to.

【0027】なお、本発明は前記実施例に限定されるも
のではなく、必要に応じて変更することができる。
The present invention is not limited to the above embodiment, but can be modified as necessary.

【0028】たとえば、前述した実施例においては、発
熱素子3Aの高発熱部3aおよび低発熱部3bをともに
同一の厚さにして、材質のみを異ならせて電気抵抗値を
変化させるようにしたが、高発熱部3a、低発熱部3b
としてともに同一材質のTa-SiO2 を用い、厚さのみ
をそれぞれ約2000Aと約4000Aとに異ならせて
形成しても、抵抗値はそれぞれ約1600Ω(高発熱部
3a)、約800Ω(低発熱部3b)となり、前述した
実施例において材質を異にした場合と同様に、発熱素子
3Aに部分的に複数個の高発熱部3aを形成することが
できる。
For example, in the above-described embodiment, both the high heat generating portion 3a and the low heat generating portion 3b of the heat generating element 3A have the same thickness, and only the material is changed to change the electric resistance value. , High heat generating part 3a, low heat generating part 3b
As Ta-SiO 2 of the same material, the resistance values are about 1600 Ω (high heat generation part 3 a) and about 800 Ω (low heat generation) even if they are formed with different thicknesses of about 2000 A and about 4000 A, respectively. The portion 3b) is formed, and a plurality of high heat generating portions 3a can be partially formed in the heat generating element 3A, as in the case of using different materials in the above-described embodiment.

【0029】また、材質と厚さの両者を変えて発熱素子
3Aに部分的に複数個の高発熱部3aを形成することも
可能である。
It is also possible to partially form a plurality of high heat generating parts 3a in the heat generating element 3A by changing both the material and the thickness.

【0030】[0030]

【発明の効果】このように本発明によれば、発熱素子間
の整列方向に直交する方向の熱分布を良好にして、イン
クの切れのよい良好な品質の印字を行うことができるい
う効果を奏する。
As described above, according to the present invention, it is possible to improve the heat distribution in the direction orthogonal to the alignment direction between the heat generating elements, and to print with good ink quality and good quality. Play.

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

【図1】本発明に係るサーマルヘッドの実施例を示す主
要部の平面図
FIG. 1 is a plan view of a main part showing an embodiment of a thermal head according to the present invention.

【図2】図1の発熱抵抗体の発熱分布を示す平面図およ
びグラフ
FIG. 2 is a plan view and a graph showing a heat generation distribution of the heat generating resistor shown in FIG.

【図3】図1の実施例における印字品質を示す説明図FIG. 3 is an explanatory diagram showing print quality in the embodiment of FIG.

【図4】サーマルヘッドの一般的な構成を示す断面図FIG. 4 is a sectional view showing a general configuration of a thermal head.

【図5】従来のサーマルヘッドを示す要部の平面図FIG. 5 is a plan view of a main part showing a conventional thermal head.

【図6】図4の発熱抵抗体の発熱分布を示す平面図およ
びグラフ
6 is a plan view and a graph showing a heat generation distribution of the heat generating resistor shown in FIG.

【図7】従来のサーマルヘッドにおける印字品質を示す
説明図
FIG. 7 is an explanatory diagram showing print quality in a conventional thermal head.

【符号の説明】[Explanation of symbols]

1 絶縁性基板 2 グレーズ層 3 発熱抵抗体 3A 発熱素子 3a 高発熱部 3b 低発熱部 4 電極 4a 共通電極 4b 個別電極 5 保護層 6,7 間隙 8 文字 1 Insulating Substrate 2 Glaze Layer 3 Heating Resistor 3A Heating Element 3a High Heating Part 3b Low Heating Part 4 Electrode 4a Common Electrode 4b Individual Electrode 5 Protective Layer 6, 7 Gap 8 Character

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 絶縁性基板上に蓄熱層を設け、この蓄熱
層上に、複数個の発熱素子を配置するとともに、前記蓄
熱層上に、前記発熱素子に給電する共通給電体および個
別給電体からなる電極を配置してなるサーマルヘッドに
おいて、各発熱素子が発熱素子の整列方向に直交する方
向に間隔をおいて複数個の高発熱部を生じるように、各
発熱素子を発熱素子の整列方向に直交する方向における
複数の部位に区画し、少なくとも隣接する部位において
材質および厚さの少なくとも一方を異ならせたことを特
徴とするサーマルヘッド。
1. A heat storage layer is provided on an insulating substrate, a plurality of heating elements are arranged on the heat storage layer, and a common power feeder and an individual power feeder for feeding power to the heating elements are provided on the heat storage layer. In a thermal head having electrodes made of, each heating element is arranged in a direction in which the heating elements are arranged so that a plurality of high heat generating portions are formed at intervals in a direction orthogonal to the direction in which the heating elements are arranged. A thermal head characterized in that it is divided into a plurality of parts in a direction orthogonal to, and at least one of the material and the thickness is made different at least in the adjacent parts.
JP13351592A 1992-05-26 1992-05-26 Thermal head Withdrawn JPH05318796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13351592A JPH05318796A (en) 1992-05-26 1992-05-26 Thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13351592A JPH05318796A (en) 1992-05-26 1992-05-26 Thermal head

Publications (1)

Publication Number Publication Date
JPH05318796A true JPH05318796A (en) 1993-12-03

Family

ID=15106593

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13351592A Withdrawn JPH05318796A (en) 1992-05-26 1992-05-26 Thermal head

Country Status (1)

Country Link
JP (1) JPH05318796A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010125679A (en) * 2008-11-27 2010-06-10 Toshiba Hokuto Electronics Corp Thermal printing head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010125679A (en) * 2008-11-27 2010-06-10 Toshiba Hokuto Electronics Corp Thermal printing head

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