JPS59145163A - Thermal head - Google Patents

Thermal head

Info

Publication number
JPS59145163A
JPS59145163A JP2121583A JP2121583A JPS59145163A JP S59145163 A JPS59145163 A JP S59145163A JP 2121583 A JP2121583 A JP 2121583A JP 2121583 A JP2121583 A JP 2121583A JP S59145163 A JPS59145163 A JP S59145163A
Authority
JP
Japan
Prior art keywords
heat
thermal head
vapor deposition
electrodes
glass substrate
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
JP2121583A
Other languages
Japanese (ja)
Inventor
Katsuhide Shino
志野　勝英
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP2121583A priority Critical patent/JPS59145163A/en
Publication of JPS59145163A publication Critical patent/JPS59145163A/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)
  • Resistance Heating (AREA)

Abstract

PURPOSE:To prevent the oozing generation of a character while obtaining high quality printing by rapidly dissipating heat of a heat generator, by constituting a thermal head by forming the heat generator and an electrode to a glass cylinder being a substrate. CONSTITUTION:Heat generators 2 each comprising Ta2N or NiCr are formed to a part of the outer wall of a cylindrical glass substrate 1 by a vapor deposition method and strip like Al electrodes 3 are further formed so as to connect the one ends thereof to the heat generators 2 by the same vapor deposition method. External lead wires 4 are connected to one ends of the aforementioned Al electrodes 3 and SiC or Ta2O5 is vapor deposited in order to prevent abrasion due to the contact with paper to form an anti-wear layer 5. In the thermal head constituted as mentioned above, because the heat generated from each heat generator 2 is transferred to the inside of the glass substrate 1 and heat is dissipated to the outside therefrom, heat dissipating effect can be enhanced.

Description

【発明の詳細な説明】 く技術分野〉 本発明はサーマルプリンターにおけるサーマルヘッドの
改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an improvement of a thermal head in a thermal printer.

〈従来技術〉 従来提案されているサーマルプリンターのサーマルヘッ
ドは中実のガラス円柱を基材として、これに発熱体、電
極等を設けて構成されている。<Prior Art> The thermal head of a conventionally proposed thermal printer is constructed by using a solid glass cylinder as a base material, on which a heating element, electrodes, etc. are provided.

基材にガラスを使用し、た場合は、ヘッドの紙に対する
接触が良好であり、また安価に製造することができると
いう特徴例ある。しかしながら、従来のこの種サーマル
ヘッドは上述したように基材として中実のガラス円柱を
使用している関係でどうしても放熱性が悪く、これが原
因で印字の際文字が滲み、印字品位が著しく損われると
いう問題があった。When glass is used as the base material, the head contacts the paper well and can be manufactured at low cost. However, as mentioned above, conventional thermal heads of this type use solid glass cylinders as the base material, which inevitably results in poor heat dissipation, which causes characters to smear during printing, significantly impairing print quality. There was a problem.

〈目　的〉 本発明はかかる従来の問題点に鑑みて成されたもので、
印字時の放熱性を改善して印字品位を向上させたサーマ
ルヘッドを提供せんとするものである。<Purpose> The present invention has been made in view of such conventional problems, and
The present invention aims to provide a thermal head with improved heat dissipation during printing and improved printing quality.

〈実施例〉 以下図にもとづいて本発明の詳細な説明する。<Example> The present invention will be explained in detail below based on the drawings.

第１図は本発明に係るサーマルヘッドの外観斜視図、第
２図は同側面図である。FIG. 1 is an external perspective view of a thermal head according to the present invention, and FIG. 2 is a side view of the same.

図において、１はガラス製の基材を示し、この基材には
図示の如く円筒状のものが用いられる０２は前記基材の
外壁の一部に蒸着法により形成したＴａ２Ｎ、ＮｉＣｒ
等の発熱体である。３は一端が前記発熱体２に接続され
るように蒸着法によつて形成された帯状の１電極、４は
前記Ａ４電極３の一端に接続した外部リード電極、５は
紙との接触による摩耗を防止するために形成された耐摩
耗層を示し、たとえばＳ　ｉ　Ｃ，’ｒａ２０５等の蒸
着によって形成されている。In the figure, 1 indicates a glass base material, and this base material is cylindrical as shown in the figure. 02 is Ta2N, NiCr formed on a part of the outer wall of the base material by vapor deposition.
It is a heating element such as. 3 is a band-shaped electrode formed by vapor deposition so that one end is connected to the heating element 2, 4 is an external lead electrode connected to one end of the A4 electrode 3, and 5 is abrasion due to contact with paper. This shows a wear-resistant layer formed to prevent this, and is formed, for example, by vapor deposition of S i C, 'ra205, or the like.

本発明のサーマルヘッドは上述の如く形成したから、発
熱体２から発生した熱はガラス基材１の内側に伝わりそ
こから外部へ放熱されるので放熱効果を著しく高めるこ
とか出来る。また、ガラス基材１か中空であるから、ヘ
ッドの自重が軽減され、−＼ノド駆動モータへの負荷を
減少し、同時に印字速度をも改善することが出来る。Since the thermal head of the present invention is formed as described above, the heat generated from the heating element 2 is transmitted to the inside of the glass substrate 1 and is radiated from there to the outside, so that the heat radiation effect can be significantly enhanced. Further, since the glass substrate 1 is hollow, the weight of the head is reduced, the load on the gutter drive motor is reduced, and the printing speed can be improved at the same time.

第３図は他の実施例を示すもので、この例では円筒状ガ
ラス基材１の内部に熱伝導性の高い金属６、たとえばＡ
ｌを充填している。この場合も発熱体２の熱は内部の金
属６に伝わり吸収されるために、放熱効果を著しく高め
ることが出来る。なお、金属６の充填方法としては、柱
状の金属棒を挿入して熱伝導性の高い樹脂を用いた接着
剤とか、金属粉；末、を混入させた接着剤で固着したり
、あるいは金属棒を基材内に嵌着するように構成しても
よい。FIG. 3 shows another embodiment, in which a metal 6 with high thermal conductivity, for example, A
It is filled with l. In this case as well, the heat of the heating element 2 is transmitted to and absorbed by the internal metal 6, so that the heat dissipation effect can be significantly enhanced. The metal 6 can be filled by inserting a columnar metal rod and fixing it with an adhesive using a resin with high thermal conductivity or an adhesive mixed with metal powder; may be configured to fit into the base material.

〈効　果〉 以上の様に本発明のサーマルヘッドによれば、発熱体の
熱をいち早く放熱して文字の滲み発生を防止することが
出来るから、高品位の印字を期待することができる。<Effects> As described above, according to the thermal head of the present invention, the heat of the heating element can be quickly dissipated and the occurrence of blurring of characters can be prevented, so high-quality printing can be expected.

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

第１図は本発明に係るサーマルヘッドの外観斜視図、第
２図は同側面図、第３図は他の実施例を示す図である。FIG. 1 is an external perspective view of a thermal head according to the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a diagram showing another embodiment.

Claims (1)

【特許請求の範囲】 １、　ガラス筒を基材とし、この基材に発熱体、電極等
を形成してなることを特徴とするサーマルヘッド。 一マルヘノド。[Claims] 1. A thermal head comprising a glass tube as a base material and a heating element, electrodes, etc. formed on this base material. One Malhenod.
JP2121583A 1983-02-09 1983-02-09 Thermal head Pending JPS59145163A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2121583A JPS59145163A (en) 1983-02-09 1983-02-09 Thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2121583A JPS59145163A (en) 1983-02-09 1983-02-09 Thermal head

Publications (1)

Publication Number Publication Date
JPS59145163A true JPS59145163A (en) 1984-08-20

Family

ID=12048778

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2121583A Pending JPS59145163A (en) 1983-02-09 1983-02-09 Thermal head

Country Status (1)

Country Link
JP (1) JPS59145163A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61175453U (en) * 1985-04-20 1986-11-01
JPH01139278A (en) * 1987-11-26 1989-05-31 Susumu Kogyo Kk Cylindrical thermal printing element

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5777584A (en) * 1980-10-31 1982-05-14 Mitsubishi Electric Corp Thermal head
JPS5814782A (en) * 1981-07-20 1983-01-27 Ricoh Co Ltd Thermal head
JPS5814781A (en) * 1981-07-20 1983-01-27 Ricoh Co Ltd Thermal head

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5777584A (en) * 1980-10-31 1982-05-14 Mitsubishi Electric Corp Thermal head
JPS5814782A (en) * 1981-07-20 1983-01-27 Ricoh Co Ltd Thermal head
JPS5814781A (en) * 1981-07-20 1983-01-27 Ricoh Co Ltd Thermal head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61175453U (en) * 1985-04-20 1986-11-01
JPH01139278A (en) * 1987-11-26 1989-05-31 Susumu Kogyo Kk Cylindrical thermal printing element

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