JPS6021264A - Electrode structure of thermal printer head - Google Patents
Electrode structure of thermal printer headInfo
- Publication number
- JPS6021264A JPS6021264A JP58129971A JP12997183A JPS6021264A JP S6021264 A JPS6021264 A JP S6021264A JP 58129971 A JP58129971 A JP 58129971A JP 12997183 A JP12997183 A JP 12997183A JP S6021264 A JPS6021264 A JP S6021264A
- Authority
- JP
- Japan
- Prior art keywords
- conductor layer
- thickness
- protective film
- conductor
- layer
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 36
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 239000011651 chromium Substances 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000011521 glass Substances 0.000 abstract description 4
- 238000007740 vapor deposition Methods 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001120 nichrome Inorganic materials 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract 10
- 239000011241 protective layer Substances 0.000 abstract 2
- 238000001312 dry etching Methods 0.000 abstract 1
- 238000000206 photolithography Methods 0.000 abstract 1
- 230000020169 heat generation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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
- B41J2/335—Structure of thermal heads
Landscapes
- Electronic Switches (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はサーマルプリンターのヘッド、特にその電極の
構造に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a thermal printer head, and in particular to the structure of its electrodes.
従来例の構成とその問題点
サーマルプリントヘッドは一般に第1図に示づように絶
縁性の基板1の表面に抵抗層からイ【る発熱体2を形成
し、この上に導体層3を形成し、これらの発熱体、導体
の微細パターンの1に耐摩耗保護膜4を形成してなるも
のである。Conventional configuration and problems Thermal print heads generally have a heating element 2 formed from a resistive layer on the surface of an insulating substrate 1, and a conductive layer 3 formed on top of this. However, a wear-resistant protective film 4 is formed on one of the fine patterns of these heating elements and conductors.
最近は、乾電池で駆動できる4ノーマルグリントヘッド
として、低い電圧で働くものが要求されているが、従来
の上記のような構造のり−マルプリントヘッドでは、導
体電極部分が薄く、低電圧大電流では導体部分の不要な
発熱が大さ″く、また電圧降下が大きいための不具合が
生じている。Recently, there has been a demand for a 4-normal glint head that can be driven by dry batteries and works at low voltage, but in the conventional glue print head with the above structure, the conductor electrode part is thin, and it is difficult to operate at low voltage and high current. Problems occur due to the large amount of unnecessary heat generation in the conductor part and the large voltage drop.
この改善のために導体部分の厚みを厚くりると、上記の
発熱、電圧降下は解消されるのであるが、発熱体の近傍
で導体部分と発熱体部分の間に大さな段差ができ、この
上に耐摩耗保護膜を一面に形成した時、段差部分にクラ
ックが発生し易く、イこから剥離するという不具合が生
じてしまう。In order to improve this, increasing the thickness of the conductor part eliminates the above heat generation and voltage drop, but a large step is created between the conductor part and the heat generating element near the heating element. When a wear-resistant protective film is formed over the entire surface, cracks are likely to occur at the stepped portions, resulting in problems such as peeling off from the edges.
発明の目的
本発明はこの様な不具合を解消し大さく7電流でも問題
なく駆動できて、しかも保護膜剥離等の生じないサーマ
ルプリントヘッドを提供することを目的とするものであ
る。OBJECTS OF THE INVENTION It is an object of the present invention to eliminate such problems and provide a thermal print head that can be driven without problems even with a current of about 700 volts and does not cause peeling of the protective film.
発明の構成
本発明は、発熱体近傍の紙のすれる部分は導体膜を薄く
し、ギャップの段差によるクラックから生ずる保護膜の
剥離のないように保護膜との接着性の良い導体をその表
面につけた構造とし、また発熱の不具合に対しては、紙
のすれない部分の導体膜を厚くして抵抗を小さくして発
熱を防ぎ、またその上にも保護膜との接着性の良い導体
をつけた構造にし、これにより、保護膜の剥離のない、
しかも不要な発熱の少い構造となしている。Structure of the Invention The present invention makes the conductive film thinner in the area where the paper rubs near the heating element, and coats the surface with a conductor that has good adhesion to the protective film to prevent the protective film from peeling off due to cracks caused by the step difference in the gap. In addition, to prevent the problem of heat generation, the conductor film in the areas where the paper does not rub is thickened to reduce resistance and prevent heat generation, and a conductor with good adhesion to the protective film is also added on top of it. With this structure, there is no peeling of the protective film.
Moreover, it has a structure that generates less unnecessary heat.
実施例の説明
以下本発明の一実施例を図面にもとづいて説明する。第
2図において、アルミナの基板1の上に部分的にガラス
グレーズ1aを約40μ亀の厚さに印刷、焼成により形
成し、その上に発熱抵抗体2としてニクロムを0.2μ
m蒸谷により形成す・る。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 2, a glass glaze 1a is partially printed and fired to a thickness of about 40 μm on an alumina substrate 1, and a 0.2 μm layer of nichrome is applied as a heating resistor 2 on top of the glass glaze 1a.
It is formed by a steam valley.
その上に第1の導体3aとして銅を0.5μm1さらに
その上に第2の導体としてクロム3bを0.05μm1
ざらにその上に第3の導体として銅3Gを1.5μ雇、
さらにその上に第4の導体としてクロム3aを0.05
μm1いずれも蒸着により形成する。ここで、第2およ
び第4の導体3bおよび3dは保護膜4と接着性の良い
ものが選ばれている。On top of that, 0.5 μm of copper is applied as the first conductor 3a, and 0.05 μm of chromium 3b is placed on top of that as the second conductor.
Roughly put 1.5μ of copper 3G as the third conductor on top of it,
Furthermore, 0.05% of chromium 3a is added as a fourth conductor on top of that.
Both μm1 are formed by vapor deposition. Here, the second and fourth conductors 3b and 3d are selected to have good adhesion to the protective film 4.
次に、上記第1〜第4の導体38〜3dよりなる多層膜
を、フォトリゾグラフィとウェブ1へエツチングにより
、発熱抵抗体2が露出する部分5と第2の導体3bが露
出する部分6をガラスグレーズ1aの部分に形成する。Next, a multilayer film consisting of the first to fourth conductors 38 to 3d is photolithographically etched onto the web 1, so that a portion 5 where the heating resistor 2 is exposed and a portion 6 where the second conductor 3b is exposed. is formed on the glass glaze 1a.
その後に、そのずべての上に保護膜4を5μを形成して
サーマルプリントヘッドとなすものである。After that, a protective film 4 having a thickness of 5 μm is formed on all of them to form a thermal print head.
この発熱抵抗体2が露出する部分5と第2の導体3bが
露出Jる部分6の上は、紙が摺動し印字する部分である
。この部分については発熱抵抗体2と導体3a 、3b
の部分の境界では0.55μ卯しか段差がないので、5
μの厚みの保護膜4〜にも段差が少く、印字時の摩耗、
機械的衝撃による段差部分での保護膜剥離は発生しない
。The area 5 where the heating resistor 2 is exposed and the area 6 where the second conductor 3b is exposed are areas on which the paper slides and prints. For this part, the heating resistor 2 and the conductors 3a and 3b
There is only a 0.55 μm step difference at the boundary of the part, so 5
There are few steps in the protective film 4~ with a thickness of μ, and there is no wear during printing.
The protective film does not peel off at the stepped portion due to mechanical impact.
また、紙のすれない部分は保護膜と導体38〜3dの積
層部分となっているが、この部分では抵抗値が低く、不
要な発熱及び電圧低下が少いので、低電圧、大電流での
駆動ができて乾電池でも駆動が可能である。In addition, the part where the paper does not rub is the laminated part of the protective film and the conductors 38 to 3d, and this part has a low resistance value, and there is little unnecessary heat generation and voltage drop, so it can be used at low voltages and large currents. It can be driven and can even be powered by dry batteries.
第1と第3の導体3aと30として銅を使用するのは、
比抵抗が非常に小さいからであり、また第2と第4の導
体3bと3dとしてクロムを使用するのは、保護膜に使
用する酸化物等や銅にも付着性が良いためである。また
、導体材料を2種にしておくことで、蒸着、エツチング
がやり易く、安価な製品を市場に提供できる。The use of copper as the first and third conductors 3a and 30 is because
This is because the specific resistance is very low, and the reason why chromium is used for the second and fourth conductors 3b and 3d is because it has good adhesion to oxides used in the protective film and copper. Furthermore, by using two types of conductor materials, vapor deposition and etching can be easily performed, and inexpensive products can be provided to the market.
発明の効果
以上のように本発明の電極wJ造は、低電圧、大電流で
も電圧低下、不要発熱が少なくそして保護膜の剥離のな
いサーマルヘッドを提供できるものである。Effects of the Invention As described above, the electrode wJ structure of the present invention can provide a thermal head that has less voltage drop and less unnecessary heat generation even at low voltages and large currents, and does not cause peeling of the protective film.
第1図は従来のサーマルプリントヘッドの断面構造図、
第2図は本発明の一実施例の断面構造図である。
1・・・基板、2・・・抵抗発熱体、3a・〜・3(1
・・・積htj導体、4・・・保護膜
代理人 森 木 義 弘Figure 1 is a cross-sectional structural diagram of a conventional thermal print head.
FIG. 2 is a cross-sectional structural diagram of one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Board, 2... Resistance heating element, 3a...3 (1
...Product htj conductor, 4...Protective film agent Yoshihiro Moriki
Claims (1)
される導体が、第1の比較的薄い電気良導体層と、その
上に設けられ、保護膜との接着性が良い第2の導体層と
、さらにその」−に設けられる比較的厚い第3の電気良
導体層と、さらにその上に設けられ、保護膜との接着性
が良い第4の導体層の4層よりなるサーマルプリントヘ
ッドの電極構造。 2、第1、第3の導体どして銅、第2、第4の導体とし
てクロムを使用したことを特徴とする特許請求の範囲第
1項記載のサーマルプリントヘッドの電極構造。[Claims] 1. A conductor formed on the heating resistor and having a protective film formed on the upper surface is provided on a first relatively thin electrically conductive layer and is bonded to the protective film. a second conductor layer with good electrical conductivity, a relatively thick third conductor layer provided thereon, and a fourth conductor layer provided thereon with good adhesion to the protective film. Electrode structure of a thermal print head consisting of layers. 2. The electrode structure of a thermal print head according to claim 1, wherein copper is used for the first and third conductors, and chromium is used for the second and fourth conductors.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58129971A JPS6021264A (en) | 1983-07-15 | 1983-07-15 | Electrode structure of thermal printer head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58129971A JPS6021264A (en) | 1983-07-15 | 1983-07-15 | Electrode structure of thermal printer head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6021264A true JPS6021264A (en) | 1985-02-02 |
Family
ID=15022958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58129971A Pending JPS6021264A (en) | 1983-07-15 | 1983-07-15 | Electrode structure of thermal printer head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6021264A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4907015A (en) * | 1987-08-26 | 1990-03-06 | Hitachi, Ltd. | Thermal printing head |
US6501497B2 (en) * | 2000-08-31 | 2002-12-31 | Alps Electric Co., Ltd. | Thermal head with small size of steps of protective layer formed on heating portion and manufacturing method thereof |
JP2009254919A (en) * | 1998-12-18 | 2009-11-05 | Dyson Technology Ltd | Robotic vacuum cleaner |
US20120212557A1 (en) * | 2011-02-23 | 2012-08-23 | Toshimitsu Morooka | Thermal head and method of manufacturing the same, and printer |
-
1983
- 1983-07-15 JP JP58129971A patent/JPS6021264A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4907015A (en) * | 1987-08-26 | 1990-03-06 | Hitachi, Ltd. | Thermal printing head |
JP2009254919A (en) * | 1998-12-18 | 2009-11-05 | Dyson Technology Ltd | Robotic vacuum cleaner |
US6501497B2 (en) * | 2000-08-31 | 2002-12-31 | Alps Electric Co., Ltd. | Thermal head with small size of steps of protective layer formed on heating portion and manufacturing method thereof |
US20120212557A1 (en) * | 2011-02-23 | 2012-08-23 | Toshimitsu Morooka | Thermal head and method of manufacturing the same, and printer |
US8624946B2 (en) * | 2011-02-23 | 2014-01-07 | Seiko Instruments Inc. | Thermal head, method of manufacturing thermal head, and printer equipped with thermal head |
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