JPS6334933Y2 - - Google Patents
Info
- Publication number
- JPS6334933Y2 JPS6334933Y2 JP1982166479U JP16647982U JPS6334933Y2 JP S6334933 Y2 JPS6334933 Y2 JP S6334933Y2 JP 1982166479 U JP1982166479 U JP 1982166479U JP 16647982 U JP16647982 U JP 16647982U JP S6334933 Y2 JPS6334933 Y2 JP S6334933Y2
- Authority
- JP
- Japan
- Prior art keywords
- external terminal
- flexible cable
- protective film
- moisture
- mounting bracket
- 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.)
- Expired
Links
- 239000004020 conductor Substances 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 6
- 239000010408 film Substances 0.000 description 17
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
【考案の詳細な説明】 この考案はサーマルプリンタヘツドに関する。[Detailed explanation of the idea] This invention relates to a thermal printer head.
この種サーマルプリンタヘツドにおいて、発熱
部に連なる導体を外部に導出するのにフレキシブ
ルケーブルを使用することがあり、その場合フレ
キシブルケーブルの導体と発熱部に連なる導体の
端部（外部端子部）とを重ね合わせて接続するよ
うにしている。これを図によつて説明すると、１
はアルミニウム等からなる放熱板、２はセラミツ
クのような絶縁基板で、その表面に発熱部３が設
置されている。発熱部３は点状の発熱要素（たと
えば薄膜により形成されてある。）の複数を一列
に或いは多行多列に配置して成されている。４は
発熱部３への通電用の導体で絶縁基板２の表面に
薄膜により形成されている。５は導体４、発熱部
３の表面を保護する耐摩耗性の保護膜で、蒸着等
により絶縁基板２の表面に形成される。このとき
導体４の端部を残してこの保護膜５が形成され
る。この端部は外部端子４Ａとして利用される。 In this type of thermal printer head, a flexible cable is sometimes used to lead the conductor connected to the heat generating part to the outside, and in that case, the conductor of the flexible cable and the end (external terminal part) of the conductor connected to the heat generating part are connected. I try to connect them by overlapping them. To explain this using a diagram, 1
2 is a heat sink made of aluminum or the like, and 2 is an insulating substrate such as ceramic, on the surface of which a heat generating part 3 is installed. The heat generating section 3 is formed by arranging a plurality of point-shaped heat generating elements (for example, formed of a thin film) in a single row or in multiple rows and multiple columns. A conductor 4 for supplying current to the heat generating portion 3 is formed as a thin film on the surface of the insulating substrate 2. Reference numeral 5 denotes a wear-resistant protective film that protects the surfaces of the conductor 4 and the heat generating portion 3, and is formed on the surface of the insulating substrate 2 by vapor deposition or the like. At this time, the protective film 5 is formed leaving the ends of the conductor 4 intact. This end portion is used as the external terminal 4A.
６はフレキシブルケーブルで、周知のようにボ
リイミド樹脂のような耐熱性の樹脂シートの表面
に導体箔を形成することによつて構成される。７
は必要によりフレキシブルケーブル６を支持する
のに使用されるプリント基板である。フレキシブ
ルケーブルはその表面の導体箔が導体４の端部す
なわち外部端子４Ａに接触するように重ね合わさ
れる。そしてその重ね位置を固定するために、そ
の重ね合わせ部分に取付金具８を当てがい、ネジ
９等により固定する。ネジ９は放熱板１にねじこ
まれる。 Reference numeral 6 denotes a flexible cable, which, as is well known, is constructed by forming a conductive foil on the surface of a heat-resistant resin sheet such as polyimide resin. 7
is a printed circuit board used to support the flexible cable 6 if necessary. The flexible cables are overlapped so that the conductor foil on the surface thereof contacts the end of the conductor 4, that is, the external terminal 4A. In order to fix the overlapping position, a mounting bracket 8 is applied to the overlapping portion and fixed with screws 9 or the like. The screws 9 are screwed into the heat sink 1.
ところでこのような構成において、前述したよ
うに外部端子４Ａにフレキシブルケーブル６を重
ね合わせる関係上、外部端子４Ａは保護膜５によ
つて被覆されずに露呈される。そのため外部に露
出した状態で使用されるのでその使用雰囲気中に
湿気があると、外部端子４Ａが腐食されることが
ある。特に導体４としてアルミニウムを使用する
場合、その腐食傾向がはなはだしい。又フレキシ
ブルケーブル６の導体箔として銅（その表面を金
でメツキすることもある。）を使用すると、この
銅とアルミニウム製の外部端子４Ａとが重なり合
うと周囲の湿気の存在によつて局部電池が形成さ
れ、ここでも腐食作用が生ずるようになる。した
がつてこのように外部端子４Ａが露出されている
ときは、その使用雰囲気の条件によつては、使用
寿命が著るしく短かくなることがある。 By the way, in such a configuration, the external terminal 4A is not covered with the protective film 5 and is exposed because the flexible cable 6 is overlapped with the external terminal 4A as described above. Therefore, since it is used exposed to the outside, if there is moisture in the atmosphere in which it is used, the external terminal 4A may be corroded. Particularly when aluminum is used as the conductor 4, its tendency to corrode is remarkable. Furthermore, if copper (the surface of which may be plated with gold) is used as the conductor foil of the flexible cable 6, if this copper and the aluminum external terminal 4A overlap, the local battery may be damaged due to the presence of surrounding moisture. formation, and corrosive effects also occur here. Therefore, when the external terminal 4A is exposed in this way, the service life may be significantly shortened depending on the conditions of the atmosphere in which it is used.
この考案はサーマルプリンタヘツドにおいて、
発熱部への通電のための導体の端部を外部端子と
して使用する場合、その外部端子の腐食による寿
命の改善を図ることを目的とする。 This idea is used in thermal printer heads.
When the end of a conductor for supplying electricity to a heat generating part is used as an external terminal, the purpose is to improve the life of the external terminal due to corrosion.
この考案の実施例を図によつて説明すると、前
記のように保護膜５からはみ出ている外部端子４
Ａの表面に耐湿性の塗料たとえばエポキシ系塗料
を塗布するなどして耐湿膜１０を形成する。この
場合図のように保護膜５の表面から外部端子４Ａ
並びにフレキシブルケーブル６の表面にまでまた
がつて耐湿膜１０を形成することが必要である。
これは外部端子４Ａの表面のみならず、外部端子
４Ａと保護膜５との境界部分から保護膜５の内面
に湿気が浸透するのを防止する必要があるからで
あり、又外部端子４Ａとフレキシブルケーブル６
との重なり個所の腐食を防ぐためである。更に耐
湿膜１０を図のように取付金具８の表面及びネジ
９が螺合する放熱板１のネジ孔の内面にまで形成
する。これによれば取付金具１０の表面の腐食が
回避できるとともに、取付金具１０とフレキシブ
ルケーブル６との境界部分から湿気が浸透するの
も回避できる。またビス孔への塗布はビス９のゆ
るみ止めのためにも有効である。 An embodiment of this invention will be explained with reference to the drawings. As mentioned above, the external terminal 4 protrudes from the protective film 5.
A moisture-resistant film 10 is formed by applying a moisture-resistant paint, such as an epoxy paint, to the surface of A. In this case, as shown in the figure, from the surface of the protective film 5 to the external terminal 4A
It is also necessary to form the moisture-resistant film 10 over the surface of the flexible cable 6.
This is because it is necessary to prevent moisture from penetrating not only the surface of the external terminal 4A but also the inner surface of the protective film 5 from the boundary between the external terminal 4A and the protective film 5. cable 6
This is to prevent corrosion at the overlapped areas. Further, a moisture-resistant film 10 is formed on the surface of the mounting bracket 8 and the inner surface of the screw hole of the heat sink 1 into which the screw 9 is screwed, as shown in the figure. According to this, corrosion on the surface of the mounting bracket 10 can be avoided, and moisture can also be prevented from penetrating through the boundary between the mounting bracket 10 and the flexible cable 6. Furthermore, application to the screw holes is also effective for preventing the screws 9 from loosening.
上記のように構成すると、保護膜５から露出し
ている外部端子４Ａの表面は耐湿膜１０によつて
覆われているので、湿気による腐食は防止され、
又耐湿膜１０は外部端子４Ａと保護膜５との境面
を、又フレキシブルケーブル６との重なり個所を
それぞれまたいで形成されているので、保護膜５
との境面部からの湿気の侵入並びにフレキシブル
ケーブル６の導体箔と外部端子４Ａとの重なり部
分に形成される局部電池による腐食を確実に防止
できるようになる。したがつてたとえば導体４と
してアルミニウム、銅等の導電性金属を使用して
も何ら支障はなく、耐食性金属たとえば金等を使
用する必要はなくなる。これにより製造費も低下
するようになつて都合がよい。 With the above configuration, the surface of the external terminal 4A exposed from the protective film 5 is covered with the moisture-resistant film 10, so corrosion due to moisture is prevented.
In addition, the moisture-resistant film 10 is formed across the interface between the external terminal 4A and the protective film 5, and also across the overlapped portion with the flexible cable 6, so that the protective film 5
This makes it possible to reliably prevent moisture from entering from the interface between the flexible cable 6 and corrosion caused by local batteries formed at the overlapping portions of the conductor foil of the flexible cable 6 and the external terminals 4A. Therefore, there is no problem in using a conductive metal such as aluminum or copper as the conductor 4, and there is no need to use a corrosion-resistant metal such as gold. This is advantageous in that it also reduces manufacturing costs.
以上のようにこの考案によれば導体の外部端子
等が腐食することによる寿命の短縮を簡単に防止
できる効果が得られる。 As described above, according to this invention, it is possible to easily prevent the shortening of the life span due to corrosion of the external terminals of the conductor.
第１図はこの考案の実施例を示す断面図、第２
図は一部の斜視図である。
２……絶縁基板、３……発熱部、４……導体、
４Ａ……外部端子、５……保護膜、６……フレキ
シブルケーブル、１０……耐湿膜。
Figure 1 is a sectional view showing an embodiment of this invention, Figure 2 is a sectional view showing an embodiment of this invention.
The figure is a partial perspective view. 2...Insulating substrate, 3...Heating part, 4...Conductor,
4A...External terminal, 5...Protective film, 6...Flexible cable, 10...Moisture-resistant film.
Claims (1)
体の外部端子となる端部を残して保護膜を覆設
し、前記外部端子の一部にフレキシブルケーブル
を重ね、その重ね合せ部分に取付金具を載せ、固
定用のネジを前記取付金具を通して、前記絶縁基
板を表面に支持している放熱板のネジ孔に螺合さ
せて、前記外部端子と前記フレキシブルケーブル
を圧接してなるサーマルプリンタヘツドにおい
て、 前記保護膜と前記フレキシブルケーブルとの間
の前記外部端子の露呈した表面から前記保護膜、
前記フレキシブルケーブル、前記取付金具の表面
及び前記放熱板のネジ孔の内面を覆う耐湿膜を備
え、前記ネジを前記取付金具の表面を覆う耐湿膜
の表面から前記ネジ孔に螺合してなるサーマルプ
リンタヘツド。[Claims for Utility Model Registration] A protective film is provided on a conductor for energizing a heat-generating part provided on the surface of an insulating substrate, leaving the end that will become an external terminal, and a flexible cable is overlapped on a part of the external terminal. , place a mounting bracket on the overlapping part, pass a fixing screw through the mounting bracket, and screw it into a screw hole of a heat sink supporting the insulating substrate on the surface, thereby connecting the external terminal and the flexible cable. In a thermal printer head formed by pressure contact, the protective film is removed from the exposed surface of the external terminal between the protective film and the flexible cable.
The thermal cable is provided with a moisture-resistant film that covers the surface of the flexible cable, the mounting bracket, and the inner surface of the screw hole of the heat sink, and the screw is screwed into the screw hole from the surface of the moisture-resistant film that covers the surface of the mounting bracket. printer head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982166479U JPS5968937U (en) | 1982-11-01 | 1982-11-01 | thermal printer head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982166479U JPS5968937U (en) | 1982-11-01 | 1982-11-01 | thermal printer head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5968937U JPS5968937U (en) | 1984-05-10 |
| JPS6334933Y2 true JPS6334933Y2 (en) | 1988-09-16 |
Family
ID=30364457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982166479U Granted JPS5968937U (en) | 1982-11-01 | 1982-11-01 | thermal printer head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5968937U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5652051U (en) * | 1979-09-25 | 1981-05-08 | ||
| JPS56135081A (en) * | 1980-03-26 | 1981-10-22 | Matsushita Electric Ind Co Ltd | Thermal head |
-
1982
- 1982-11-01 JP JP1982166479U patent/JPS5968937U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5652051U (en) * | 1979-09-25 | 1981-05-08 | ||
| JPS56135081A (en) * | 1980-03-26 | 1981-10-22 | Matsushita Electric Ind Co Ltd | Thermal head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5968937U (en) | 1984-05-10 |
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