JPS5881180A - Thermal head - Google Patents

Thermal head

Info

Publication number
JPS5881180A
JPS5881180A JP18022081A JP18022081A JPS5881180A JP S5881180 A JPS5881180 A JP S5881180A JP 18022081 A JP18022081 A JP 18022081A JP 18022081 A JP18022081 A JP 18022081A JP S5881180 A JPS5881180 A JP S5881180A
Authority
JP
Japan
Prior art keywords
thermal head
fixed
support plate
recording paper
longitudinal direction
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
JP18022081A
Other languages
Japanese (ja)
Inventor
Takehiro Yoshimura
吉村　武裕
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP18022081A priority Critical patent/JPS5881180A/en
Publication of JPS5881180A publication Critical patent/JPS5881180A/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)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Recording Measured Values (AREA)
  • Facsimile Heads (AREA)

Abstract

PURPOSE:To provide a low cost thermal head which can be applied to such a use wherein a piece of heat sensitive recording paper is fixed by such an arrangement wherein a substrate having plural heat generating resistors along its longitudinal direction is fixed to the surface of a supporting plate, and the supporting plate is supported in movable manner. CONSTITUTION:Heat generating resistors 2 are arranged in parallel to each other on a ceramic substrate 1 along its longitudinal direction and the ceramic substrate is fixed to the surface of a supporting plate 3 made of magnetic material. Two lines of through holes are formed in the supporting plate 3, A ball bush 8 is coupled to this through hole, and the supporting plate 3 is supported to be movable by means of 2 rods 9 passing through the holes. A thermal head is arranged to be movable along its longitudinal direction (main scanning direction) and the yielding rate of the heat generating resistors is raised at the time of formation of patterns by making the length of the thermal head shorter. The thermal head is also arranged so that it can be moved in the direction perpendicular to its main scanning direction, and by this, the thermal head can also be applied to such a use wherein a piece of heat sensitive recording paper is to be fixed.

Description

【発明の詳細な説明】 本発明は、複数個の発熱抵抗体を備え、プリンタやファ
クシミリなどに用いられるサーマルヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermal head that includes a plurality of heating resistors and is used in printers, facsimile machines, and the like.

サーマルヘッドとしては、複数個の発熱抵抗体を基板表
面上に基板の長手方向に沿って互いに平行に、所定の長
さく例えばＡ４サイズ用のサーマルヘッドの場合には２
０３ｍ）に亘って配列し、上記基板を、固定した搭載装
置に固定された支持板上に固定したものが知られている
。As a thermal head, a plurality of heating resistors are placed on the surface of a substrate parallel to each other along the longitudinal direction of the substrate for a predetermined length. For example, in the case of an A4 size thermal head, two
03 m), and the substrates are fixed on a support plate fixed to a fixed mounting device.

このす〜マルヘッドでは、位置が固定された発熱抵抗体
上部に一熱記録紙を押し当て、所定部分の発熱抵抗体を
通電加熱させることによってその部分の感熱記録紙を発
色させた後、感熱記録紙をサーマルヘッドの長手方向と
直角方向に所定量だけ移動させ、再び所定位置の発熱抵
抗体を通電加熱させる。このように感熱記録紙の移動と
、発熱抵抗体の通電加熱とを繰返すことにより、感熱記
録紙上に所定の記録を行なうことができる。With this Su-Maru head, one thermal recording paper is pressed against the upper part of the heating resistor whose position is fixed, and the heating resistor in a predetermined part is heated by electricity to color the thermal recording paper in that part, and then the thermal recording paper is heated. The paper is moved by a predetermined amount in a direction perpendicular to the longitudinal direction of the thermal head, and the heating resistor at the predetermined position is heated again by electricity. By repeating the movement of the heat-sensitive recording paper and the heating of the heat-generating resistor in this way, a predetermined recording can be performed on the heat-sensitive recording paper.

しかしながら、上記サーマルヘッドは、サーマルヘッド
が固定されているため、感熱記録紙の幅に対応する長さ
に亘って発熱抵抗体を配列することを必須の条件とする
。そのため、例えばＡ４サイズ用のサーマルヘッドにお
いては、約２０ＣＩ＋の長さに亘って、１１１１１１１
当り４個あるいは８個の微細な間隔で発熱抵抗体のパタ
ーン形成を行なわなければならず、このような大青なサ
イズに亘って微細パターンを形成することはサーマルヘ
ッドの製造の歩留りを低下させ、結果的にはサーマルヘ
ッドのコストを引上げる要因となる。However, since the thermal head is fixed, it is an essential condition that the heating resistors are arranged over a length corresponding to the width of the thermal recording paper. Therefore, for example, in an A4 size thermal head, 1111111 over a length of approximately 20CI+
It is necessary to form a pattern of heating resistors at minute intervals of 4 or 8 pieces per head, and forming a minute pattern over such a large size reduces the yield of thermal head manufacturing. As a result, this becomes a factor that increases the cost of the thermal head.

また、上記の位置が固定されたサーマルヘッドは、感熱
記録紙が移動する型式の装置にしか使用することができ
ず、用途が制限される問題もある。Further, the thermal head whose position is fixed as described above can only be used in a type of device in which the thermal recording paper moves, and there is also the problem that its applications are limited.

本発明は以上の問題に鑑みてなされたものであって、低
コストのサーマルヘッドを提供し、あるいは感熱記録紙
が固定される用途にも適用しうるサーマルヘッドを提供
することを目的とするものである。The present invention has been made in view of the above problems, and an object of the present invention is to provide a low-cost thermal head, or a thermal head that can be applied to applications in which thermal recording paper is fixed. It is.

本発明は、サーマルヘッドを可動にすることにより、上
記目的を達成せんとするものであって、すなわち、サー
マルヘッドをその長手方向（以下主走査方向とも称す）
に移動させることにより、サーマルヘッドの長さを短か
くして発熱抵抗体のパターン形成時の歩留りを向上させ
、あるいはサーマルヘッドを主走査方向と直角方向（以
下、副走査方向と称することもある）に移動させること
により、感熱記録紙が固定されたプリンタなどの装置に
く適用しうるようにしたものである。The present invention aims to achieve the above object by making the thermal head movable, namely, to move the thermal head in its longitudinal direction (hereinafter also referred to as the main scanning direction).
By moving the thermal head to a direction perpendicular to the main scanning direction (hereinafter sometimes referred to as the sub-scanning direction), the length of the thermal head can be shortened and the yield during pattern formation of heating resistors can be improved. By moving the thermal recording paper, it can be applied to devices such as printers in which the thermal recording paper is fixed.

以下、実施例により本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail with reference to Examples.

第１図は本発明のサーマルヘッドの一実施例を示す概略
斜視図、第２図は第１図の中央部での縦断面図である。FIG. 1 is a schematic perspective view showing an embodiment of the thermal head of the present invention, and FIG. 2 is a longitudinal sectional view at the center of FIG. 1.

１はセラミックからなる基板で、基板１上には基板長手
方向に沿って発熱抵抗体２が互いに平行に配置されてい
る。基板１はステンレス、鉄などの磁性材料からなる支
持板３の上面に固定されている。支持板３の両側部には
サーマルヘッドの長手方向に沿って２条の貫通孔（図示
せず）が形成され、この貫通孔にボールブシュ８が嵌合
されており、そのボールブシュ８中に両端が適宜なフレ
ームに固定されかつサーマルヘッドの長手方向に延在す
る２本のロッド９を通すことによって支持板３、いいか
えるとサーマルヘッドが主走査方向（矢印１０又は１０
′の方向）に可動に支持されている。また、支持板３の
下面には第１図に破線で示す如き領域４に、第２図に示
す如く空隙５を有する所定ピッチの歯５ａが設けられ、
この歯５ａと励磁コイル６−１．６−２．６−３を有す
るステータ７とによってリニアステップモータの磁気回
路を形成している。Reference numeral 1 denotes a substrate made of ceramic, on which heating resistors 2 are arranged parallel to each other along the longitudinal direction of the substrate. The substrate 1 is fixed to the upper surface of a support plate 3 made of a magnetic material such as stainless steel or iron. Two through holes (not shown) are formed along the longitudinal direction of the thermal head on both sides of the support plate 3, and a ball bushing 8 is fitted into the through hole. By passing two rods 9 fixed at both ends to a suitable frame and extending in the longitudinal direction of the thermal head, the support plate 3, in other words, the thermal head is
’ direction). Further, on the lower surface of the support plate 3, teeth 5a having a predetermined pitch and having gaps 5 as shown in FIG. 2 are provided in a region 4 as shown by broken lines in FIG.
The teeth 5a and the stator 7 having excitation coils 6-1.6-2.6-3 form a magnetic circuit of a linear step motor.

上記の構成によりステータ７の励磁コイル６−１．６−
２．６−３を順次公知の方法で励磁することによって、
リニアステップモータの駆動力により支持板３、したが
ってサーマルヘッドは主走査方向に駆動されるように構
成されている。With the above configuration, the excitation coil 6-1.6- of the stator 7
By sequentially exciting 2.6-3 using a known method,
The support plate 3, and therefore the thermal head, are configured to be driven in the main scanning direction by the driving force of the linear step motor.

支持板３上には、更に発熱抵抗体２の駆動回路が搭載さ
れ、外部信号源との入出力端子も設けられるが、本実施
例の理解を容易に、するためにそれらの図示を省略しで
ある。A drive circuit for the heating resistor 2 is further mounted on the support plate 3, and input/output terminals for connecting to an external signal source are also provided, but these are omitted from illustration to facilitate understanding of this embodiment. It is.

本実施例のサーマルヘッドを用いて記録を行なうには、
発熱抵抗体２の上部に感熱記録紙を押し当て、このサー
マルヘッドを所定位置に固定して所定部分の発熱抵抗体
２を通電加熱してその部分の感熱記録紙を発色させ、感
熱記録紙は停止させたままでステータ７の励磁コイル６
−１．６−２６−３に順次、繰返して通電することによ
り、支持板３の底部とステータ７とで形成されるリニア
ステップモータを駆動してサーマルヘッドをロッド９に
沿って主走査方向１０又は１０′に所定距離だけ移動さ
せて停止し、その位置で再び所定部分の発熱抵抗体２を
通電加熱して感熱記録紙の発色を行なう。以上の操作を
必要なだけ繰返して、感熱記録紙の幅の記録を終了した
後、感熱記録紙を主走査方向と直角方向（副走査方向）
に所定距離だけ移動させ、再び上記主走査方向の記録を
行なう。To perform recording using the thermal head of this embodiment,
A piece of thermal recording paper is pressed against the top of the heating resistor 2, this thermal head is fixed in a predetermined position, and a predetermined portion of the heating resistor 2 is heated with electricity to color the thermal recording paper in that area. The excitation coil 6 of the stator 7 remains stopped.
-1.6-26-3 is sequentially and repeatedly energized to drive a linear step motor formed by the bottom of the support plate 3 and the stator 7, and move the thermal head along the rod 9 in the main scanning direction 10. Alternatively, it is moved to 10' by a predetermined distance and stopped, and at that position, a predetermined portion of the heating resistor 2 is again heated with electricity to color the thermosensitive recording paper. After repeating the above operation as many times as necessary to finish recording the width of the thermal recording paper, move the thermal recording paper in a direction perpendicular to the main scanning direction (sub-scanning direction).
is moved by a predetermined distance, and recording in the main scanning direction is performed again.

本実施例はサーマルヘッドを主走査方向に移動させて記
録を行なうので、サーマルヘッドの長さを例えば感熱記
録紙の幅の１／２．１／３の如くに短かくすることがで
きる。これにより発熱抵抗体形成領域の長さも短かくな
り、例えば長さを１／２に短縮すれば発熱抵抗体パター
ン形成時の歩留り向上に伴ってサーマルヘッド価格が約
ＩＡに低下する。In this embodiment, since recording is performed by moving the thermal head in the main scanning direction, the length of the thermal head can be made as short as, for example, 1/2.1/3 of the width of the thermal recording paper. As a result, the length of the heating resistor forming region is also shortened. For example, if the length is shortened to 1/2, the cost of the thermal head will be reduced to about IA as the yield in forming the heating resistor pattern is improved.

また、本実施例はリニアステップモータを利用すると共
に、支持板３の底部に直接磁気回路を形成してサーマル
ヘッドをリニアステップモータの駆動源に直接接続して
いるので、サーマルヘッドの移動を高速で行なうことが
できる。Furthermore, in this embodiment, a linear step motor is used, and a magnetic circuit is formed directly at the bottom of the support plate 3 to directly connect the thermal head to the drive source of the linear step motor, so that the thermal head can be moved at high speed. It can be done with

第３図は本発明の他の実施例を示す概略平面図である。FIG. 3 is a schematic plan view showing another embodiment of the present invention.

本実施例は、感熱記録紙の幅に対応する長さに発熱抵抗
体２が配列される。また、支持板３の両端部にサーマル
ヘッドの長手方向と直角方向に貫通孔（図示せず）が形
成され、その孔にボールブシュが嵌め込まれる。一方、
サーマルヘッドの長手方向と直角な方向に延在するよう
に適宜なフレームに固定さｊた２本のロッド９に上記支
持板３の孔を挿通することによって、支持板３はサーマ
ルヘッドの長手方向に直角方向、すなわち副走査方向１
１　、１１’に可動に支持されている。本実施例では、
支持板底部の空隙５と共にリニアステップモータを形成
するステータ７は、サーマルヘッドの長手方向と直角の
方向に必要な移動距離の長さに亘って設けられ、必要な
数の励磁コイル（一般的に６−１と記号を付した）が巻
回されている。In this embodiment, the heating resistors 2 are arranged in a length corresponding to the width of the thermal recording paper. Further, through holes (not shown) are formed at both ends of the support plate 3 in a direction perpendicular to the longitudinal direction of the thermal head, and ball bushings are fitted into the holes. on the other hand,
By inserting two rods 9 fixed to an appropriate frame so as to extend in a direction perpendicular to the longitudinal direction of the thermal head through the holes in the support plate 3, the support plate 3 can extend in the longitudinal direction of the thermal head. in the direction perpendicular to , that is, the sub-scanning direction 1
1 and 11'. In this example,
The stator 7, which together with the air gap 5 at the bottom of the support plate forms a linear step motor, is provided over the required travel distance in a direction perpendicular to the longitudinal direction of the thermal head, and is equipped with the required number of excitation coils (generally 6-1) is wound.

本実施例では感熱記録紙を固定し、それに発熱抵抗体部
分を押し当てて所定部分の発熱抵抗体２を通電加熱して
１ライン分の記録を行なった後、所定の励磁コイル５−
ｉに順次通電することによりサーマルヘッドを副走査方
向１１又は１１′に移動させて再び１ライン分の記録を
行なう。以上の操作を繰返すことにより、感熱記録紙を
固定したままでその一端から他端まで順次記録を行なう
ことができる。In this embodiment, a heat-sensitive recording paper is fixed, a heat-generating resistor portion is pressed against it, and a predetermined portion of the heat-generating resistor 2 is heated by electricity to record one line, and then a predetermined excitation coil 5-
By sequentially applying current to i, the thermal head is moved in the sub-scanning direction 11 or 11' to record one line again. By repeating the above operations, it is possible to sequentially record from one end to the other end of the thermosensitive recording paper while keeping it fixed.

以上のように本実施例は、感熱記録紙を固定したＸＹレ
コーダの如き記録部として適用することができる。As described above, this embodiment can be applied to a recording unit such as an XY recorder in which a thermal recording paper is fixed.

本発明には既知のいかなるリニアステップモータも使用
するこ゛とが１￥孝る。以上の実施例では励磁コイルを
有する磁気回路部をステータとし、支持板を可動子とし
ているが、逆にコイルを支持板底部に設けて可動子コイ
ルとし、この可動子コイルに通電することにより、サー
マルヘッドを主走査方向又は副走査方向に移動させるよ
うに構成してもよい。The present invention may use any known linear step motor. In the above embodiments, the magnetic circuit section having the excitation coil is used as the stator, and the support plate is used as the movable element, but conversely, a coil is provided at the bottom of the support plate to serve as the movable element coil, and by energizing this movable element coil, The thermal head may be configured to move in the main scanning direction or the sub-scanning direction.

更ニ、本発明におけるサーマルヘッドの駆動手段を、実
施例に示したリニアステップモータに代えてワイヤとモ
ータとの組合せからなる手段など既知の駆動手段を使用
することもできる。Furthermore, the driving means for the thermal head in the present invention may be replaced by the linear step motor shown in the embodiments, and may be any known driving means such as a combination of a wire and a motor.

以上詳述した如く、本発明はサーマルヘッドを可動にし
たので、可動方向を主走査方向とした場合には発熱抵抗
体パターンの形成領域の長さが短かくなってパターン形
成時の歩留りが向上し、延いてはサーマルヘッドの価格
を低下させることができ、また可動方向を副走査方向と
した場合にはＸＹプリンタなどの如き感熱記録紙が固定
された型式の装置へも適用することができる効果が生じ
る。As detailed above, in the present invention, the thermal head is made movable, so when the movable direction is the main scanning direction, the length of the formation area of the heating resistor pattern is shortened, and the yield during pattern formation is improved. In addition, the price of the thermal head can be reduced, and if the movable direction is set to the sub-scanning direction, it can also be applied to devices in which thermal recording paper is fixed, such as an XY printer. effect occurs.

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

第１図は本発明の一実施例を示す概略斜視図、第２図は
第１１！２１の縦断面図、９３図は本発明の他の実施例
を示す概略平面図である。 １・・・裏機、２・・・発熱抵抗体、３・・・支持板、
４・・・支持板底部の空隙形成領域、５・・・空隙、６
−１゜６−２．６−３．６−ｉ・・・励磁コイル、７・
・・ステータ、８・・・ボールブシュ、９・・・ロッド
、１０．１０・・・主走査方向、１１　、１１’・・・
副走査方向。 特許出願人　株式会社リコー 代理人弁理士青山　葆外２名 第２図 第３図FIG. 1 is a schematic perspective view showing one embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view of No. 11!21, and FIG. 93 is a schematic plan view showing another embodiment of the present invention. 1... Back machine, 2... Heat generating resistor, 3... Support plate,
4... Gap formation area at the bottom of the support plate, 5... Gap, 6
-1゜6-2.6-3.6-i... Excitation coil, 7.
...Stator, 8...Ball bush, 9...Rod, 10.10...Main scanning direction, 11, 11'...
Sub-scanning direction. Patent applicant: Ricoh Co., Ltd. Patent attorney Aoyama Hougai (2 persons) Figure 2 Figure 3

Claims (4)

【特許請求の範囲】[Claims] （１）表面に長手方向に沿って複数個の発熱抵抗体を有
する基板を支持板上に固定してなるサーマルヘッドにお
いて、該支持板を可動に支持したことを特徴とするサー
マルヘッド。(1) A thermal head comprising a substrate having a plurality of heating resistors on its surface along the longitudinal direction fixed on a support plate, characterized in that the support plate is movably supported. （２）支持板の移動方向が基板の長手方向である特許請
求の範囲第１項に記載のサーマルヘッド。(2) The thermal head according to claim 1, wherein the moving direction of the support plate is the longitudinal direction of the substrate. （３）支持板の移動方向が基板の長手方向と直角な方向
である特許請求の範囲第１項に記載のサーマルヘッド。(3) The thermal head according to claim 1, wherein the direction of movement of the support plate is perpendicular to the longitudinal direction of the substrate. （４）支持板が磁性材料からなり、かつ該支持板底部が
周期的に形成された空隙を備えてリニアステップモータ
の磁気回路の一部を形成している特許請求の範囲第１項
ないし第３項に記載のサーマルヘッド。(4) Claims 1 to 4, wherein the support plate is made of a magnetic material, and the bottom of the support plate has periodically formed gaps to form a part of the magnetic circuit of the linear step motor. The thermal head according to item 3.
JP18022081A 1981-11-09 1981-11-09 Thermal head Pending JPS5881180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18022081A JPS5881180A (en) 1981-11-09 1981-11-09 Thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18022081A JPS5881180A (en) 1981-11-09 1981-11-09 Thermal head

Publications (1)

Publication Number Publication Date
JPS5881180A true JPS5881180A (en) 1983-05-16

Family

ID=16079495

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18022081A Pending JPS5881180A (en) 1981-11-09 1981-11-09 Thermal head

Country Status (1)

Country Link
JP (1) JPS5881180A (en)

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