JPS62164561A - Thermal head for printer - Google Patents

Thermal head for printer

Info

Publication number
JPS62164561A
JPS62164561A JP61006685A JP668586A JPS62164561A JP S62164561 A JPS62164561 A JP S62164561A JP 61006685 A JP61006685 A JP 61006685A JP 668586 A JP668586 A JP 668586A JP S62164561 A JPS62164561 A JP S62164561A
Authority
JP
Japan
Prior art keywords
dots
heat
thermal head
heating
boundary
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
JP61006685A
Other languages
Japanese (ja)
Inventor
Hiroyuki Obata
小幡　博之
Takashi Uchiyama
隆 内山
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP61006685A priority Critical patent/JPS62164561A/en
Publication of JPS62164561A publication Critical patent/JPS62164561A/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
    • B41J2/345—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 characterised by the arrangement of resistors or conductors

Landscapes

  • Electronic Switches (AREA)
  • Fax Reproducing Arrangements (AREA)

Abstract

PURPOSE:To print favorably, by such a heat generating driving operation that, of a plurality of heat generating dots, the ones located at a boundary are supplied with a quantity of electric power larger than that supplied to each of the other heat generating dots. CONSTITUTION:When supplying electric power to each of heat generating dots 1 through electrode layers 9, 10, driving is so performed that the quantity of electric power supplied to each of the dots 1a, 1b located at a boundary is larger than that supplied to each of the other dots, whereby the temperature of the dots 1a, 1b is prevented from being lowered. Concretely, the energization time for the dots 1a, 1b located at the boundary is prolonged as compared with that for the other dots. Since the supply of electric power to each of the heat generating dots is performed by giving a current pulse to the dot, the energization time for the dots 1a, 1b located at the boundary can be prolonged by increasing the number of the current pulses supplied to the dots 1a, 1b.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明はプリンタ用サーマルヘッド、特に発熱ドラｌ−
を群ごとに分け、この各群ごとに発熱駆動させるタイプ
のプリンタ用サーマルヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a thermal head for a printer, particularly a heat generating driver l-
The present invention relates to a thermal head for a printer which is divided into groups and is driven to generate heat for each group.

〔発明の技術的背景〕[Technical background of the invention]

サーマルプリンタは、ドツ＋−インパクト式プリンタに
比べ、騒音が少ない等のメリットがあり、現在広く普及
している。このサーマルプリンタに用いられるサーマル
ヘッドは、第２図に示すように多数の発熱ドツト１から
構成される。この発熱ドツト１は図の主走査方向Ｘに列
状に配されており、１回の走査で紙に対して１行のドツ
ト列の印字を行なうことができる。紙は図の副走査方向
Ｙに送られるので、結局２次元平面状のプリン１〜を行
うことができる。各発熱ドツト１には電力供給用のｆｆ
１ｍｆｆ　（図示されていない）が接続されている。発
熱ドツト１を図の切断線ｚ−ｚ’で切断した断面図を第
３図に示す。セラミック等から成る放熱基板２上に、ガ
ラス等から成る熱抵抗層３が形成され、この上にＴａ２
Ｎ等から成る発熱抵抗体４が形成されている。この発熱
抵抗体４上に形成されたアルミニウム等から成るリード
電極層５は図の左右に一対互いに間隙をもって設けられ
ており、この間隙において電流は発熱抵抗体４を流れ発
熱することになる。これらの上には保護層として、８１
０２等から成る耐酸化層６およびＴａ２０６等から成る
耐摩耗層７が形成される。Thermal printers have advantages such as less noise compared to dot + - impact printers, and are now widely used. The thermal head used in this thermal printer is composed of a large number of heating dots 1, as shown in FIG. The heating dots 1 are arranged in a row in the main scanning direction X in the figure, and one row of dots can be printed on paper in one scan. Since the paper is fed in the sub-scanning direction Y in the figure, two-dimensional planar printing 1 can be performed after all. Each heating dot 1 has an ff for power supply.
1mff (not shown) is connected. FIG. 3 shows a cross-sectional view of the heating dot 1 taken along the cutting line zz' in the figure. A heat resistance layer 3 made of glass or the like is formed on a heat dissipation substrate 2 made of ceramic or the like.
A heating resistor 4 made of N or the like is formed. A pair of lead electrode layers 5 made of aluminum or the like formed on the heating resistor 4 are provided with a gap between them on the left and right sides of the figure, and in this gap, current flows through the heating resistor 4 and generates heat. 81 as a protective layer on top of these.
An oxidation-resistant layer 6 made of Ta202 or the like and a wear-resistant layer 7 made of Ta206 or the like are formed.

このように、一般的なサーマルヘッドは、発熱抵抗体に
電力を供給して駆動することになる。印字を行なう発熱
ドツトについては電力を供給し、印字を行わない発熱ド
ツトについては電力を供給しないようにして走査を行え
ば、各印字ドツトの集合として画像のプリントを行うこ
とができる。In this way, a typical thermal head is driven by supplying power to the heating resistor. By supplying power to the heating dots that perform printing and not supplying power to the heating dots that do not perform scanning, an image can be printed as a collection of each printing dot.

従って、第２図のように配された全発熱ドツトを同時駆
動し、紙をＹ方向に送ってゆけば２次元平面上の画像プ
リントが得られることになる。ところが発熱抵抗体に供
給する電力量はかなり大きくなり、列状に配されたすべ
ての発熱ドツトを同時駆動するためには、かなり大がか
りな電源装置が必要になる。そこで通常は、各発熱ドツ
トを隣接するいくつかのドツトごとに分け、この分けら
れた各群ごとに時分割して駆動を行う。例えば第２図の
例では、Ａ−Ｄ群までの４つの群を構成し、まずＡ群の
各発熱ドラｌ−を駆動し、続いてＢ群、０群、Ｄ群と時
間をおいて駆動するのである。このように４つの群に分
割すれば、一時に涌費する電力は１／４となり、電源装
置の規模もそれだけ縮小できることになる。第２図では
説明の便宜上、１つの群には少数の発熱ドツトしか示さ
れていないが、実際には例えば全５１２個の発熱ドラ１
〜を１２８個ずつの４群に分割して駆動するような時分
割駆動が行われている。Therefore, if all the heating dots arranged as shown in FIG. 2 are simultaneously driven and the paper is fed in the Y direction, an image print on a two-dimensional plane can be obtained. However, the amount of power supplied to the heating resistor becomes quite large, and in order to simultaneously drive all the heating dots arranged in a row, a fairly large-scale power supply device is required. Therefore, each heating dot is usually divided into several adjacent dots, and each group is driven in a time-division manner. For example, in the example shown in Fig. 2, four groups are formed from groups A to D. First, each heat generating driver l- of group A is driven, and then groups B, 0, and D are driven at a later time. That's what I do. If the power supply is divided into four groups in this way, the power consumed at one time will be reduced to 1/4, and the scale of the power supply device can be reduced accordingly. For convenience of explanation, only a small number of heating dots are shown in one group in Fig. 2, but in reality, for example, a total of 512 heating dots 1 are shown.
Time-division driving is performed in which .about. is divided into four groups of 128 groups and driven.

〔背景技術の問題点〕[Problems with background technology]

上述のような時分割駆動を行なった場合、従来のヘッド
では各群の境界線に不用な線が入るという問題点がある
。第４図にこのような不用な線が入ったプリント結果を
示す。ここで領域ａ、ｂ。When time-division driving is performed as described above, conventional heads have a problem in that unnecessary lines are included at the boundaries of each group. FIG. 4 shows a print result with such unnecessary lines. Here, areas a and b.

ｃ、ｄは、それぞれ第２図に示ずヘッドのＡ群、Ｂ群、
０群、Ｄ群によってプリントされた画像である。各領域
の境界には不用な線８が入ってしまっている。実際には
この不用な線８は印字されるべきドツトが印字されない
ために生ずる線であるため、プリントされた画像上では
白い線としてあられれる。c and d are not shown in Fig. 2 and represent the A group, B group, and
This is an image printed by the 0 group and the D group. Unnecessary lines 8 are included at the boundaries of each area. In reality, this unnecessary line 8 is a line that occurs because dots that should be printed are not printed, so they appear as white lines on the printed image.

このように不用な線が形成される原因は、各群の境界に
位置する発熱ドツト１ａ、１ｂ、１ｃ。The reason why such unnecessary lines are formed is the heating dots 1a, 1b, and 1c located at the boundaries of each group.

１ｄの発熱時の温度が、他の発熱ドツトの発熱時の温度
に比べて低くなるためである。例えば第２図で、Ｂ群が
駆動されている間は、Ｂ群が配されでいる領域の温度は
全体的に上昇するが、隣接するＡ群、０群は駆動されて
いないため、Ｂ群の境界に位置する発熱ドツト１ｂの温
度が低くなってしまうのである。一般に発熱ドツトの温
度と印字濃度との関係は第５図に示すようになり、温度
Ｔ　では印字されるが温度Ｔ１まで温度が低下すると、
もはや該ドツトは印字されなくなってしまうのである。This is because the temperature when the dot 1d generates heat is lower than the temperature when the other heat generating dots generate heat. For example, in Figure 2, while group B is being driven, the temperature of the area where group B is placed increases overall, but since the adjacent groups A and 0 are not being driven, group B is being driven. The temperature of the heating dot 1b located at the boundary between the two ends up becoming low. Generally, the relationship between the temperature of the heating dot and the printing density is as shown in Fig. 5. Printing occurs at temperature T, but when the temperature drops to temperature T1,
The dot is no longer printed.

このような現象は、特に昇華転写型のサーマルプリンタ
で顕著となり、画質を悪くする大きな問題点となってい
る。This phenomenon is particularly noticeable in sublimation transfer type thermal printers, and is a major problem that deteriorates image quality.

〔発明の目的〕[Purpose of the invention]

そこで本発明は発熱ドツトを群ごとに分１ノで駆動して
も良好なプリン１〜を行うことができるプリンタ用サー
マルヘッドを提供することを目的とする。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a thermal head for a printer that can perform good printing even when the heating dots are driven group by group at a rate of 1 minute.

〔発明の概要〕[Summary of the invention]

本発明の特徴は、主走査方向に配されたｎ個の発熱ドツ
トと、このｎ個の発熱ドツトのうち隣接するｍ個の発熱
ドツトを１群として各群ごとに時分割して発熱駆動する
駆動手段と、を備えるプリンタ用サーマルヘッドにおい
て、１群を構成するｍ個の発熱ドラ１〜のうち境界に位
置する発熱ドツトに供給される電力が、他の発熱ドツト
に供給される電力より大きくなるように駆動し、発熱ド
ツトを群ごとに分けて駆動しても良好なプリントを行う
ことができるようにした点にある。The feature of the present invention is that n heating dots arranged in the main scanning direction and m adjacent heating dots among these n heating dots are set as one group, and each group is time-divisionally driven to generate heat. In the thermal head for a printer, the power supplied to the heat generating dot located at the boundary among the m heat generating dots 1 to 1 making up one group is greater than the power supplied to the other heat generating dots. Even if the heat-generating dots are driven in groups and the heat-generating dots are driven in groups, it is possible to perform good printing.

〔発明の実施例〕[Embodiments of the invention]

以下本発明を図示する実施例に基づいて説明する。第１
図（ａ）は本発明の原理説明図である。The present invention will be described below based on illustrated embodiments. 1st
Figure (a) is a diagram explaining the principle of the present invention.

各発熱ドツト１には電極層９．１０が接続されており電
力が供給される。従来のサーマルヘッドでは、各発熱ド
ツトに等しく電力供給を行っているため、境界に位置す
る発熱ドツト１ａ、１ｂ（図ではハツチングを施して示
す）の発熱時の温度が低下することは前述したとおりで
ある。そこで本発明は、この境界に位置する発熱ドツト
に供給する電力が、他の発熱ドツトに供給する電力Ｊ：
り大きくなるように駆動を行い、該発熱ドツトの温度低
下を防止しようとするものである。Each heating dot 1 is connected to an electrode layer 9, 10 and supplied with electric power. In conventional thermal heads, power is supplied equally to each heating dot, so as mentioned above, the temperature of heating dots 1a and 1b (indicated by hatching in the figure) located at the boundary when they generate heat decreases. It is. Therefore, in the present invention, the electric power supplied to the heating dot located at this boundary is the electric power J supplied to the other heating dots:
The purpose is to prevent the temperature of the heating dot from decreasing by driving the heating dot so that the heating temperature increases.

以下に、この原理を具体化するための実施例をいくつか
示す。Below, some examples for embodying this principle will be shown.

（１）　　境界に位置する発熱ドツトへの通Ｎ時間を長
くする。一般に各発熱ドツトへの電力供給は、各発熱ド
ツトに電流パルスを与えることによって行われる。従っ
て境界に位置する発熱ドツトへ与える電流パルス数を多
くすれば、通電時間を長くとることができ、供給電力を
大きくすることができる。この方法によれば、発熱ドツ
ト列としては従来のものと全く同じものを使用すること
ができる。(1) Increase the time required to pass through the heating dots located at the border. Generally, power is supplied to each heating dot by applying a current pulse to each heating dot. Therefore, by increasing the number of current pulses applied to the heating dots located at the boundary, the energization time can be increased, and the power supplied can be increased. According to this method, it is possible to use exactly the same heating dot array as the conventional one.

（２）　　境界に位置する発熱ドツトを構成する抵抗素
子を、他の発熱ドツトとは異なった材質で形成する。一
般に発熱ドツトは第３図に示すような構造を有するが、
ここで発熱抵抗体４の材質を変えれば、消費する電力間
も変化することになる。あるいはリード電極層５の材質
を変えても同様の効果が得られる。そこで第１図のハツ
チングを施した発熱ドツト１ａ、１ｂについては、発熱
抵抗体あるいはリード電極層の材質を他の発熱ドツトと
は変えるようにしておけば、供給電力を大きくすること
が可能である。この方法によれば駆動手段の動作に関し
ては何ら変更を加える必要はない。(2) The resistance element constituting the heating dot located at the boundary is formed of a different material from that of the other heating dots. Generally, a heating dot has a structure as shown in Figure 3.
If the material of the heating resistor 4 is changed here, the amount of power consumed will also change. Alternatively, the same effect can be obtained by changing the material of the lead electrode layer 5. Therefore, for the hatched heating dots 1a and 1b in Fig. 1, it is possible to increase the power supplied by making the material of the heating resistor or lead electrode layer different from that of the other heating dots. . According to this method, there is no need to make any changes to the operation of the drive means.

（３）　　使の発熱ドツトへの供給電力を抵抗を介して
損失させる。この実施例を第１図（ｂ）に示す。(3) The power supplied to the heat generating dot is lost through the resistor. This embodiment is shown in FIG. 1(b).

即ち、ハツチングを施した発熱ドツトＩａ、１ｂ以外の
発熱ドツトに電力を供給する電極Ｆｙ！Ｉ９には、抵抗
１１を介して電力供給を行うようにし、この抵抗１１で
電力損失を行わせ、結果的に発熱ドツト１ａ、ｌｂへの
供給電力を大きくするのである。That is, the electrode Fy! supplies power to the heat generating dots other than the hatched heat generating dots Ia and 1b! Power is supplied to I9 through a resistor 11, and power loss is caused by this resistor 11, resulting in an increase in the power supplied to the heating dots 1a and lb.

（４）　　境界に位置する発熱ドツトへ電力を供給する
１１ｉ＆層の太さを異ならぼる。この実施例を第１図（
Ｃ）に示す。即ち、ハツチングを施した発熱ドツト１ａ
、ｌｂに電力を供給する電極層９ａ。(4) The thickness of the 11i layer that supplies power to the heating dots located at the boundary is made different. This example is shown in Figure 1 (
Shown in C). That is, the heat generating dot 1a with hatching
, 1b.

９ｂ、１０ａ、１０ｂの太さを、他の電極層９゜１０よ
り太くするのである。これにより、発熱ドツト１ａ、１
ｂへの供給電力を大きくすることができる。The thickness of electrode layers 9b, 10a, and 10b is made thicker than the other electrode layers 9.10. As a result, the heating dots 1a, 1
It is possible to increase the power supplied to b.

以上、いくつかの実施例を示したが、本発明は要するに
境界に位置する発熱ドツトに供給される電力が、他の発
熱ドツトに供給される電力より大きくなるようにできれ
ばどのような具体的手段を採ってもかまわない。このよ
うに境界に位置する発熱ドツトに大きな電力を供給すれ
ば、温度低下を防止することができ、従来のサーマルヘ
ッドのように各群の境界線に不用な線が入るような問題
は解決される。Several embodiments have been shown above, but the present invention is, in short, any specific means that can make the power supplied to the heat-generating dots located at the boundary greater than the power supplied to other heat-generating dots. It is okay to take . By supplying a large amount of power to the heat-generating dots located at the boundaries in this way, it is possible to prevent a drop in temperature, and the problem of unnecessary lines appearing at the boundaries of each group, which is the problem with conventional thermal heads, is solved. Ru.

〔発明の効果〕〔Effect of the invention〕

以上のとおり本発明によれば、発熱ドラ１〜を群ごとに
分け、この各群ごとに発熱駆動させるタイプのプリンタ
用サーマルヘッドにおいて、境界に位置する発熱ドツト
に供給される電力が、他の発熱ドツトに供給される電力
より大きくなるように発熱駆ｖＪするようにしたため、
発熱ドツトを群ごとに分けて駆動しても各群の境界線に
不用な線が入ることがなくなり、良好なプリントを行う
ことができるようになる。As described above, according to the present invention, in a thermal head for a printer of a type in which the heat generating dots 1 to 1 are divided into groups and each group is driven to generate heat, the power supplied to the heat generating dots located at the boundary is different from that of the other heat generating dots. Since the heat generation drive vJ is made to be larger than the power supplied to the heat generation dot,
Even if the heating dots are divided into groups and driven, unnecessary lines will not appear on the boundaries of each group, making it possible to perform good printing.

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

第１図（ａ）は本発明の原理説明図、第１図（ｂ）、（
Ｃ）は本発明に係るサーマルヘッドの一実施例の部分拡
大図、第２図は従来の一般的なサーマルヘッドの概略図
、第３図はサーマルヘッドを構成する発熱ドラ１−の一
例を示す断面図、第４図は従来のナーマルヘッドを用い
てプリントした結果の一例を示す図、第５図は発熱ドツ
トの温度と印字濃度との一般的な関係を示すグラフであ
る。 １・・・発熱ドツト、１ａ〜１ｄ・・・境界に位置する
発熱ドツト、２・・・放熱基板、３・・・熱抵抗層、４
・・・発熱抵抗体、５・・・リード電極層、６・・・耐
酸化層、７・・・耐１テ耗層、８・・・不用な線、９．
１０．９ａ。 ９ｂ、ｉ　ｏａ、ｉ　ｏｂ−を極層、１１　・・・抵抗
、Ａ〜Ｄ・・・各発熱ドツト群。 出願人代理人　　佐　　藤　　−雄 ＜Ｑ） 第１図 （ｂ） 第１図 （り 第１図 第２図 第３図 第４図FIG. 1(a) is a diagram explaining the principle of the present invention, FIG. 1(b), (
C) is a partially enlarged view of an embodiment of the thermal head according to the present invention, FIG. 2 is a schematic diagram of a conventional general thermal head, and FIG. 3 is an example of the heating drum 1- constituting the thermal head. FIG. 4 is a cross-sectional view showing an example of the results of printing using a conventional thermal head, and FIG. 5 is a graph showing the general relationship between the temperature of the heating dot and print density. DESCRIPTION OF SYMBOLS 1... Heat generating dot, 1a-1d... Heat generating dot located at the boundary, 2... Heat dissipation board, 3... Heat resistance layer, 4
. . . Heating resistor, 5. Lead electrode layer, 6. Oxidation resistant layer, 7. 1 wear resistant layer, 8. Unnecessary wire, 9.
10.9a. 9b, i oa, i ob- are pole layers, 11...resistors, A to D... each heating dot group. Applicant's agent Mr. Sato <Q) Figure 1 (b) Figure 1 (Figure 1, Figure 2, Figure 3, Figure 4)

Claims (1)

【特許請求の範囲】 １、主走査方向に配されたｎ個の発熱ドットと、前記ｎ
個の発熱ドットのうち隣接するｍ個の発熱ドットを１群
として各群ごとに時分割して発熱駆動する駆動手段と、
を備えるプリンタ用サーマルヘッドにおいて、１群を構
成するｍ個の発熱ドットのうち境界に位置する発熱ドッ
トに供給される電力が、他の発熱ドットに供給される電
力より大きくなるように、前記駆動手段が発熱駆動操作
を行うことを特徴とするプリンタ用サーマルヘッド。 ２、境界に位置する発熱ドットへの通電時間を長くする
ことにより供給電力を大きくすることを特徴とする特許
請求の範囲第１項記載のプリンタ用サーマルヘッド。 ３、与える電流パルス数を多くすることにより通電時間
を長くすることを特徴とする特許請求の範囲第２項記載
のプリンタ用サーマルヘッド。 ４、他の発熱ドットへの供給電力を抵抗を介して損失さ
せることにより、境界に位置する発熱ドットへの供給電
力を大きくすることを特徴とする特許請求の範囲第１項
乃至第３項のいずれかに記載のプリンタ用サーマルヘッ
ド。 ５、境界に位置する発熱ドットを構成する抵抗素子を、
他の発熱ドットとは異なつた材質で形成することにより
供給電力を大きくすることを特徴とする特許請求の範囲
第１項乃至第４項のいずれかに記載のプリンタ用サーマ
ルヘッド。 ６、境界に位置する発熱ドットへの電力供給線の太さを
、他の発熱ドットのものとは異ならせることにより供給
電力を大きくすることを特徴とする特許請求の範囲第１
項乃至第５項のいずれかに記載のプリンタ用サーマルヘ
ッド。[Claims] 1. n heating dots arranged in the main scanning direction;
a driving means for time-divisionally driving each group to generate heat by forming one group of m adjacent heat generating dots among the number of heat generating dots;
In the thermal head for a printer comprising: A thermal head for a printer, characterized in that the means performs a heat generation driving operation. 2. The thermal head for a printer according to claim 1, wherein the power supplied is increased by lengthening the time during which electricity is applied to the heat-generating dots located at the boundary. 3. The thermal head for a printer according to claim 2, characterized in that the energization time is lengthened by increasing the number of current pulses applied. 4. Claims 1 to 3, characterized in that the power supplied to the heat generating dot located at the boundary is increased by causing the power supplied to the other heat generating dots to be lost through the resistance. A thermal head for a printer according to any of the above. 5. The resistance elements that make up the heating dots located on the boundary are
The thermal head for a printer according to any one of claims 1 to 4, characterized in that the power supplied is increased by forming the thermal head with a material different from that of other heat-generating dots. 6. Claim 1, characterized in that the power supply is increased by making the thickness of the power supply line to the heat-generating dot located at the boundary different from that of other heat-generating dots.
The thermal head for a printer according to any one of items 1 to 5.
JP61006685A 1986-01-16 1986-01-16 Thermal head for printer Pending JPS62164561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61006685A JPS62164561A (en) 1986-01-16 1986-01-16 Thermal head for printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61006685A JPS62164561A (en) 1986-01-16 1986-01-16 Thermal head for printer

Publications (1)

Publication Number Publication Date
JPS62164561A true JPS62164561A (en) 1987-07-21

Family

ID=11645210

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61006685A Pending JPS62164561A (en) 1986-01-16 1986-01-16 Thermal head for printer

Country Status (1)

Country Link
JP (1) JPS62164561A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132771A (en) * 1983-12-21 1985-07-15 Matsushita Electric Ind Co Ltd Image printer
JPS613762A (en) * 1984-06-19 1986-01-09 Toshiba Corp Thermal head
JPS6125858A (en) * 1984-07-16 1986-02-04 Ricoh Co Ltd System for driving thermal head
JPS61270172A (en) * 1985-05-27 1986-11-29 Rohm Co Ltd Thermal printing head

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132771A (en) * 1983-12-21 1985-07-15 Matsushita Electric Ind Co Ltd Image printer
JPS613762A (en) * 1984-06-19 1986-01-09 Toshiba Corp Thermal head
JPS6125858A (en) * 1984-07-16 1986-02-04 Ricoh Co Ltd System for driving thermal head
JPS61270172A (en) * 1985-05-27 1986-11-29 Rohm Co Ltd Thermal printing head

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