JPS60220763A - Thermal head - Google Patents
Thermal headInfo
- Publication number
- JPS60220763A JPS60220763A JP7704284A JP7704284A JPS60220763A JP S60220763 A JPS60220763 A JP S60220763A JP 7704284 A JP7704284 A JP 7704284A JP 7704284 A JP7704284 A JP 7704284A JP S60220763 A JPS60220763 A JP S60220763A
- Authority
- JP
- Japan
- Prior art keywords
- face
- paper
- driver
- thermal head
- 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
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)
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
本発明はサーマルヘッドの構造に関し、特に、発熱抵抗
体を駆動するドライバを搭載する形式のサーマルヘッド
の構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to the structure of a thermal head, and particularly to the structure of a thermal head equipped with a driver for driving a heating resistor.
記録装置としてのサーマルプリンタには、普通紙を使用
しインクリボンを介して加熱記録を行なう熱転写方式と
感熱紙（特殊紙）を使用しこれを直接加熱して記録を行
なう加熱方式とが採用されている。Thermal printers as recording devices employ a thermal transfer method that uses plain paper and performs heating recording via an ink ribbon, and a heating method that uses thermal paper (special paper) and directly heats it to perform recording. ing.
また、記録動作には、用紙に沿ってキャリジを移動させ
ながら記録していくシリアルプリ／ティングと一行分ま
たは所定幅の記録を同時に行なうラインプリンティング
とがある。Further, recording operations include serial printing/printing, in which recording is performed while moving a carriage along the paper, and line printing, in which recording for one line or a predetermined width is performed simultaneously.
シリアルプリンティングに使用されるサーマルヘッドに
は通常縦１列のドツト列を形成する複数（例えば８〜２
４個）の発熱抵抗体が搭載されておシ、ラインプリンテ
ィングの場合は横方向にも複数列にわたって上記発熱抵
抗体が配列されている。Thermal heads used for serial printing usually have a plurality of dots (e.g. 8 to 2 dots) that form a vertical dot row.
In the case of line printing, the heating resistors are arranged in multiple rows in the horizontal direction.
これら複数の発熱抵抗体を所望のパターンで加熱駆動す
るため、シリアルに送られてくるデータ信号をまとめて
一時的に配憶した後各発熱抵抗体を同時に駆動するいわ
ゆるシリアルインパラレルアウト型の駆動方法が採用さ
れている。In order to heat and drive these multiple heat generating resistors in a desired pattern, a so-called serial-in-parallel out type drive is used in which serially sent data signals are collectively temporarily stored and then each heat generating resistor is driven simultaneously. method has been adopted.
この駆動方法のため、一般に、各発熱抵抗体を駆動する
ドライバにシフトレジスタを内蔵するかあるいは併用す
ることが行なわれている。これらドライバおよびシフト
レジスタはＩＣチップで構成されている。For this driving method, a shift register is generally built into the driver for driving each heating resistor, or is used in combination with the driver. These drivers and shift registers are composed of IC chips.
また、最近の記録装置では、サーマルヘッド側の電極子
の数を減らして幅を小さくするとともに、可動部である
サーマルヘッドと固定側の制御部および電源とを接続す
るフレキシブル線群の信頼性向上を図るため、前記ドラ
イバを発熱抵抗体とともにサーマルヘッドに搭載するこ
とが提案されている。In addition, in recent recording devices, the number of electrodes on the thermal head side has been reduced to make the width smaller, and the reliability of the flexible wire group that connects the movable thermal head with the fixed control unit and power source has been improved. In order to achieve this, it has been proposed to mount the driver together with a heating resistor on a thermal head.
本発明はこのようなドライバ搭載型のサーマルヘッドの
改良に関する。The present invention relates to an improvement of such a driver-mounted thermal head.
ところで、従来のこの種のサーマルヘッドは、一般に、
第１図に示すように、ヒートシンク１およびその表面に
設けるセラミック基板２が平板状のものであった。By the way, conventional thermal heads of this type generally have
As shown in FIG. 1, a heat sink 1 and a ceramic substrate 2 provided on its surface were in the form of a flat plate.
ヒートシンク１は例えばアルミ板で形成され、セラミッ
ク基板２は強度、耐熱性および放熱性にすぐれ、その平
滑な表面にはパターン焼付は等によりプリント配線が形
成されている。このセラミック基板２の表面に、発熱抵
抗体３およびドライバ４と外部コネクタに接続するため
の電極子５とが添着されている。The heat sink 1 is made of, for example, an aluminum plate, and the ceramic substrate 2 has excellent strength, heat resistance, and heat dissipation properties, and has printed wiring formed on its smooth surface by pattern baking or the like. A heating resistor 3, a driver 4, and an electrode element 5 for connection to an external connector are attached to the surface of the ceramic substrate 2.
このような同一平面上に発熱抵抗体３、ドライバ４およ
び電極子５を配置する従来のサーマルヘッドでは、ドラ
イバ４がプラテン６側へ突出することになるので、該プ
ラテンと発熱抵抗体３との間木送られる用紙７がドライ
バ４に引掛かり紙送９動作が不調になりやすいという欠
点があった。In such a conventional thermal head in which the heating resistor 3, the driver 4, and the electrode 5 are arranged on the same plane, the driver 4 protrudes toward the platen 6, so that the connection between the platen and the heating resistor 3 is There is a drawback that the paper 7 being fed between the interstices tends to get caught in the driver 4 and the paper feeding 9 operation tends to malfunction.
また、用紙の引掛か＃）を防止するためには余分なガイ
ド部材を設けねばならず、さらに、ビンテローシ（図示
せず）を離れた位置に設けねばならないため用紙の終端
に記録することができず不経済であるという欠点もあっ
た。In addition, an extra guide member must be provided to prevent the paper from getting caught, and furthermore, a binder (not shown) must be provided at a remote position, making it impossible to record at the end of the paper. It also had the disadvantage of being uneconomical.
このような欠点を解消する目的から、第２図に示すよう
に、ヒートシンク１に孔？開けてドライバ（ＩＣチップ
）４をこの孔の中に嵌合同着する方法が提案されている
。In order to eliminate such drawbacks, as shown in FIG. 2, holes are formed in the heat sink 1. A method has been proposed in which the hole is opened and the driver (IC chip) 4 is fitted and attached into the hole.
しかし、この方法では、第２図に示すごとく、プリント
配線を施したセラミック基盤２とドライバ（ＩＣチップ
）４および電極子５とを接続するためのコネクタ用のプ
リント板８を別途膜けなければならず、部品点数および
加工工数が増大し製造コストが高くなるという欠点があ
る。However, with this method, as shown in FIG. 2, a printed board 8 for a connector for connecting the ceramic substrate 2 with printed wiring, the driver (IC chip) 4, and the electrode element 5 must be separately filmed. However, there is a drawback that the number of parts and the number of processing steps increase, resulting in higher manufacturing costs.
本発明の目的は、以上のような従来のサーマルヘッドの
欠点を解消し、簡単な構造でしかもコスト上昇を生じる
ことなく、紙送りの安定化を達成しうるサーマルヘッド
を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a thermal head which eliminates the above-mentioned drawbacks of the conventional thermal head, has a simple structure, and can stabilize paper feeding without increasing costs.
本発明は、ドライバおよび電極子？搭載する面が発熱抵
抗体を搭載する面よシブラテンから離隔するようこれら
の面の間に段差を設ける構成によシ上記目的を達成する
ものである。Does the present invention provide drivers and electrodes? The above object is achieved by providing a step between these surfaces so that the surface on which the heating resistor is mounted is separated from the surface on which the heating resistor is mounted.
第３図および第４図を参照して本発明の詳細な説明する
。The present invention will be described in detail with reference to FIGS. 3 and 4.
第３図および第４図において、サーマルヘッドの本体を
形成するヒートシンク１およびその表面に形成されたセ
ラミック基板２は、図示のように、発熱抵抗体３を搭載
する第１の面９と該第１の面よシブラテン６から離隔す
る＠２の面１０とを形成するよう途中で折曲した段差形
状を有している。この後退した第２の面１０にドライバ
４および電極子５が搭載されている。3 and 4, a heat sink 1 forming the main body of the thermal head and a ceramic substrate 2 formed on the surface thereof have a first surface 9 on which a heat generating resistor 3 is mounted and a first surface 9 on which a heat generating resistor 3 is mounted, and a It has a stepped shape that is bent in the middle so as to form a surface 10 separated from the surface 1 and a surface 10 spaced apart from the shim platen 6. The driver 4 and the electrode element 5 are mounted on this retreated second surface 10.
従来と同様、ヒートン／り１はアルミ等で作られ、セラ
ミック基板２は強度、耐熱性および放熱性にすぐれたセ
ラミックで形成され、その平滑な表面にはパターン焼付
は等によシブリント配線が設けられている。As in the past, Heaton/Li 1 is made of aluminum, etc., and the ceramic substrate 2 is made of ceramic with excellent strength, heat resistance, and heat dissipation, and its smooth surface is provided with printed wiring that does not allow pattern baking. It is being
発熱抵抗体３はドツト数（例えば８〜２４個）Ｋ対応す
る発熱素子（抵抗体）からなり、またドライバ４も各発
熱素子をデータ信号に基きシリアルインパラレルアウト
方式で駆動するＩＣチップで形成されてｂる。The heating resistor 3 consists of heating elements (resistors) corresponding to the number of dots (for example, 8 to 24) K, and the driver 4 is also formed of an IC chip that drives each heating element in a serial-in-parallel out method based on a data signal. It's been done.
電極子５は発熱抵抗体３およびドライバ４を外部コネク
タに接続するためのものであυ、複数個（例えば７個）
の単一の電極子を配列して構成されている。The electrode elements 5 are for connecting the heating resistor 3 and the driver 4 to an external connector, and there are a plurality of them (for example, seven).
It is constructed by arranging single electrode elements.
なお、前記ドライバ４は例えばはんだ付けに。Note that the driver 4 is used for soldering, for example.
より固着することができる。It can be more firmly attached.
以上第３図および第４図について説明した実施例によれ
は、ヒートシンク１およびセラミック基板２に段差をつ
けるというきわめて簡単な構成で、記録装置の他の部分
に無理を生じることなく、シかもコスト上昇を招くこと
なく、用紙Ｉの引掛シを確実に防止することによシ紙送
りの安定化および信頼性向上を達成することができる。The embodiment described above with reference to FIGS. 3 and 4 has an extremely simple structure in which a step is provided to the heat sink 1 and the ceramic substrate 2, and it is possible to reduce the cost and reduce the burden on other parts of the recording device. By reliably preventing the paper I from getting caught without raising the paper I, it is possible to stabilize paper feeding and improve reliability.
１だ、紙送りローラ（図示せず）と共働するピンチロー
ラを印字部に接近させて配置することも可能になるので
、用紙７のはソ終端まで印字することが可能になり用紙
の無駄をなくすことができる。1. It is also possible to place a pinch roller that works in conjunction with a paper feed roller (not shown) close to the printing unit, so it is possible to print until the end of paper 7, reducing paper waste. can be eliminated.
以上本発明を縦１列の発熱素子を有するシリアルプリン
ティング用のサーマルヘッドに適用する場合を説明した
が、本発明はラインプリンティング用のサーマルヘッド
に対しても同様に適用でき、同様の作用効果を奏するこ
とができる。The case where the present invention is applied to a thermal head for serial printing having one vertical row of heating elements has been described above, but the present invention can be similarly applied to a thermal head for line printing, and the same effects can be obtained. can play.
また、本発明は、感熱用紙を使用してこれに発熱抵抗体
３を直接圧接する形式のプリンティングおよび普通紙を
使用しインクリボンを介して発熱抵抗体３を圧接する形
式のプリンティング（熱転写式プリンティング）のいず
れに対しても同様に適用することができる。Further, the present invention is applicable to printing in which the heating resistor 3 is directly pressed onto thermal paper using thermal paper, and printing in which the heating resistor 3 is pressed into contact with the heating resistor 3 through an ink ribbon using plain paper (thermal transfer printing). ) can be similarly applied to any of the above.
以上の説明から明らかなごとく、本発明によれば、部品
点数の増加および実質上のコスト上昇を招くことなく、
紙送りの安定化を図りうるサーマルヘッドが得られる。As is clear from the above description, according to the present invention, without causing an increase in the number of parts or a substantial increase in cost,
A thermal head capable of stabilizing paper feeding can be obtained.
第１図および第２図はそれぞれ従来のサーマルヘッドの
構造例を示す縦断面図、第３図は本発明によるサーマル
ヘッドの一実施例を示す縦断面図、第４図は第３図中の
線ｉｖ −ｔｖから見た正面図である。
１・・・・・・ヒートシンク、２・・・・・・セラミッ
ク基板、３・・・・・・複数の発熱抵抗体、４・・・・
・・ドライバ、５・・・・・・電極子、６・・・・・・
プラテン、７・・・・・・用紙、９．１０・・・・・・
段差をつけた各面。
代理人 弁理士 大 音 康 穀
筒１図 第２図
Ｎ４図 １ｉ３図1 and 2 are longitudinal sectional views showing an example of the structure of a conventional thermal head, FIG. 3 is a longitudinal sectional view showing an embodiment of a thermal head according to the present invention, and FIG. 4 is a longitudinal sectional view showing an example of the structure of a conventional thermal head. FIG. 3 is a front view taken along line iv-tv. 1...Heat sink, 2...Ceramic substrate, 3...Plural heating resistors, 4...
...Driver, 5...Electrode, 6...
Platen, 7...Paper, 9.10...
Each side has a step. Agent Patent Attorney Yasushi Ooto Grain cylinder Figure 1 Figure 2 Figure N4 Figure 1i3
Claims (1)
抵抗体を駆動するドライバと外部コネクタに接続する電
極子とを搭載したサーマルヘッドにおいて、ドライバお
よび電極子を搭載する面が発熱抵抗体を搭載する面よシ
ブラテンから離隔するようこれらの面の間に段差を設け
ることを特徴とするサーマルヘッド。(1) In a thermal head equipped with a plurality of heating resistors corresponding to the number of dots, a driver for driving the heating resistors, and an electrode connected to an external connector, the surface on which the driver and the electrode are mounted is the heating resistor. A thermal head characterized in that a step is provided between these surfaces so that the surface on which the is mounted is separated from the shiburaten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7704284A JPS60220763A (en) | 1984-04-17 | 1984-04-17 | Thermal head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7704284A JPS60220763A (en) | 1984-04-17 | 1984-04-17 | Thermal head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60220763A true JPS60220763A (en) | 1985-11-05 |
Family
ID=13622713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7704284A Pending JPS60220763A (en) | 1984-04-17 | 1984-04-17 | Thermal head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60220763A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4896977A (en) * | 1987-03-12 | 1990-01-30 | Brother Kogyo Kabushiki Kaisha | Thermal printer having a structure for supporting a print head with a driver on its front surface |
| JPH0452057U (en) * | 1990-09-10 | 1992-05-01 | ||
| JPH05229144A (en) * | 1992-07-14 | 1993-09-07 | Ricoh Co Ltd | Thermal head unit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6022349B2 (en) * | 1977-10-15 | 1985-06-01 | キヤノン株式会社 | electrophotographic photoreceptor |
| JPS60151068A (en) * | 1984-01-20 | 1985-08-08 | Fuji Xerox Co Ltd | Thermal head |
-
1984
- 1984-04-17 JP JP7704284A patent/JPS60220763A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6022349B2 (en) * | 1977-10-15 | 1985-06-01 | キヤノン株式会社 | electrophotographic photoreceptor |
| JPS60151068A (en) * | 1984-01-20 | 1985-08-08 | Fuji Xerox Co Ltd | Thermal head |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4896977A (en) * | 1987-03-12 | 1990-01-30 | Brother Kogyo Kabushiki Kaisha | Thermal printer having a structure for supporting a print head with a driver on its front surface |
| JPH0452057U (en) * | 1990-09-10 | 1992-05-01 | ||
| JPH05229144A (en) * | 1992-07-14 | 1993-09-07 | Ricoh Co Ltd | Thermal head unit |
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