JPH03108294A - Printed heater - Google Patents
Printed heaterInfo
- Publication number
- JPH03108294A JPH03108294A JP24332989A JP24332989A JPH03108294A JP H03108294 A JPH03108294 A JP H03108294A JP 24332989 A JP24332989 A JP 24332989A JP 24332989 A JP24332989 A JP 24332989A JP H03108294 A JPH03108294 A JP H03108294A
- Authority
- JP
- Japan
- Prior art keywords
- resistance heating
- heating elements
- electrodes
- heating element
- whole
- 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
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 16
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 230000005856 abnormality Effects 0.000 abstract description 2
- SWELZOZIOHGSPA-UHFFFAOYSA-N palladium silver Chemical compound [Pd].[Ag] SWELZOZIOHGSPA-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052697 platinum Inorganic materials 0.000 abstract description 2
- 229910001925 ruthenium oxide Inorganic materials 0.000 abstract description 2
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 abstract description 2
- 230000020169 heat generation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
Landscapes
- Electronic Switches (AREA)
- Fixing For Electrophotography (AREA)
- Surface Heating Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
本発明は、絶縁性基板上の電極間に複数の抵抗発熱体を
形成した印刷ヒータに関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Field of Industrial Application)] The present invention relates to a printed heater in which a plurality of resistance heating elements are formed between electrodes on an insulating substrate.
（従来の技術）
周知の如く、複写機には定着用の印刷ヒータが用いられ
ている。この印刷ヒータは、通常、絶縁性基板と、この
基板上に互いに向き合って形成された２つの電極と、こ
れら電極間に該電極に接続するように形成された１本の
抵抗発熱体とから構成されている。(Prior Art) As is well known, a printing heater for fixing is used in a copying machine. This printed heater usually consists of an insulating substrate, two electrodes formed facing each other on this substrate, and one resistance heating element formed between these electrodes so as to be connected to the electrodes. has been done.
こうした印刷ヒータは、下記の問題点を有する。Such printing heaters have the following problems.
■使用中に抵抗発熱体が部分的に欠落した場合、発熱体
の幅がその欠落部分で減少する。従って、抵抗値が他の
正常な発熱体部分に比べて大きくなり、全体に均一な電
流が流れることから抵抗値の高い所程発熱が大きくなる
。その結果、消耗劣化が生じて断線２機能停止となる恐
れがある。■If a part of the resistance heating element is missing during use, the width of the heating element will be reduced by the missing part. Therefore, the resistance value is larger than that of other normal heating element parts, and since a uniform current flows throughout the heat generating element, the higher the resistance value, the more heat is generated. As a result, wear and tear may occur, leading to disconnection and failure of the function.
■断線による機能停止以前でも部分的発熱で均一な加熱
ができなくなるため、例えば上記印刷ヒータを複写機の
定着ヒータに適用した場合、定着機能が十分働くなり、
実用上使用できなくなる。■ Even before the function stops due to a disconnection, uniform heating cannot be achieved due to partial heat generation. For example, if the above printing heater is applied to the fusing heater of a copying machine, the fusing function will not work properly.
It becomes unusable for practical purposes.
■１つの抵抗発熱体では電源電圧や定格容量の変更に対
応が困難である。■It is difficult to respond to changes in power supply voltage and rated capacity with a single resistance heating element.
（発明が解決しようとする課題）
本発明は上記事情に鑑みてなされたもので、電極間に複
数本の抵抗発熱体を並列に配置することにより−、抵抗
発熱体の部分的な欠落による機能停止を回避しうる印刷
ヒータを提供することを目的とする。(Problems to be Solved by the Invention) The present invention has been made in view of the above circumstances, and by arranging a plurality of resistance heating elements in parallel between the electrodes, the function is achieved by partially missing the resistance heating elements. It is an object of the present invention to provide a printing heater that can avoid stopping.
［発明の構成コ
（課題を解決するための手段と作用）
本発明は、絶縁性基板と、この基板上に形成され、互い
に向き合う２つの電極と、前記基板上でかつ前記電極間
に並設された複数の抵抗発熱体とを具備することを特徴
とする印刷ヒータである。[Configuration of the Invention (Means and Effects for Solving the Problems) The present invention provides an insulating substrate, two electrodes formed on the substrate and facing each other, and an insulating substrate arranged in parallel on the substrate and between the electrodes. This is a printing heater characterized by comprising a plurality of resistive heating elements.
本発明において、１本の抵抗発熱体に部分的欠落が生じ
、その抵抗発熱体が一時的に大きな局部的発熱をもち、
その欠落部分が断線に至った場合でも、残りの他の並設
された抵抗発熱体が正常に発熱するため、全体としては
均一発熱を実現することができる。In the present invention, a partial break occurs in one resistance heating element, and the resistance heating element temporarily generates large local heat,
Even if the missing portion becomes disconnected, the remaining resistance heating elements arranged in parallel generate heat normally, so that uniform heat generation can be achieved as a whole.
（実施例） 以下、本発明の一実施例を第１図を参照して説明する。(Example) An embodiment of the present invention will be described below with reference to FIG.
図中の１は、絶縁性基板としてのアルミナ基板である。1 in the figure is an alumina substrate as an insulating substrate.
この基板１上には、例えば銅粉末を主体とした２つの電
極２ａ、２ｂが互いに対向して形成されている。これら
の電極２ａ、 ２ｂ間には、例えば銀パラジウム系、
酸化ルテニウム系、白金系等を主体とした３本の抵抗発
熱体３ ａ、 ３ ｂｒ３Ｃが並列に前記電極に接続
して形成されている。On this substrate 1, two electrodes 2a and 2b made of, for example, copper powder are formed facing each other. Between these electrodes 2a and 2b, for example, silver-palladium,
Three resistance heating elements 3a and 3br3C, mainly made of ruthenium oxide, platinum, etc., are connected in parallel to the electrodes.
上記実施例によれば、電極２ａ、２ｂ間には、３本の抵
抗発熱体３ａ、３ｂ、３ｃが並列に前記電極に接続して
形成された構成となっている。従って、抵抗発熱体３ａ
〜３ｃのいずれかに部分的欠落が生じた場合、その抵抗
発熱体は一時的に大きな局部的発熱をもち、その欠落部
分が断線に至った場合でも、残りの他の２つの抵抗発熱
体が正常に発熱するため、全体としては均一発熱が得ら
れる。また、上記実施例では、複数の抵抗発熱体を絶縁
性基板上に離間して並設したため、抵抗発熱体同士の熱
の影響を受けづらく、そのため抵抗発熱体の温度劣化等
が生じにくい。According to the above embodiment, three resistance heating elements 3a, 3b, and 3c are connected to the electrodes in parallel and formed between the electrodes 2a and 2b. Therefore, the resistance heating element 3a
If a partial break occurs in any of the resistance heating elements ~3c, that resistance heating element temporarily generates large local heat, and even if the missing part becomes disconnected, the remaining two resistance heating elements Since heat is generated normally, uniform heat generation is obtained as a whole. Furthermore, in the above embodiment, since the plurality of resistance heating elements are arranged in parallel on the insulating substrate in a spaced manner, the resistance heating elements are less likely to be affected by the heat of each other, and therefore temperature deterioration of the resistance heating elements is less likely to occur.
なお、上記実施例では、電極間に３本の抵抗発熱体を形
成した場合について述べたが、これに限定されず、２本
でもよいしあるいは４本以上としてもよい。In the above embodiment, a case has been described in which three resistance heating elements are formed between the electrodes, but the invention is not limited to this, and the number of resistance heating elements may be two or four or more.
［発明の効果］
以上詳述した如く本発明によれば、電極間に複数本の抵
抗発熱体を並列に配置することにより、１本の抵抗発熱
体に異常が生じても他の抵抗発熱体により全体として正
常な機能を発揮させ、もって信頼性の高い印刷ヒータを
提供できる。[Effects of the Invention] As detailed above, according to the present invention, by arranging a plurality of resistance heating elements in parallel between the electrodes, even if an abnormality occurs in one resistance heating element, the other resistance heating elements This allows the printer to function normally as a whole, thereby providing a highly reliable printing heater.
第１図は本発明の一実施例に係る印刷ヒータの平面図で
ある。
１・・・アルミナ基板、２ａ、２ｂ・・・電極、３ａ〜
３Ｃ・・・抵抗発熱体。
第１図FIG. 1 is a plan view of a printing heater according to an embodiment of the present invention. 1... Alumina substrate, 2a, 2b... Electrode, 3a~
3C...Resistance heating element. Figure 1
Claims (1)
２つの電極と、前記基板上でかつ前記電極間に並設され
た複数の抵抗発熱体とを具備することを特徴とする印刷
ヒータ。A printing heater comprising an insulating substrate, two electrodes formed on the substrate and facing each other, and a plurality of resistance heating elements arranged in parallel on the substrate and between the electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24332989A JPH03108294A (en) | 1989-09-21 | 1989-09-21 | Printed heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24332989A JPH03108294A (en) | 1989-09-21 | 1989-09-21 | Printed heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03108294A true JPH03108294A (en) | 1991-05-08 |
Family
ID=17102207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24332989A Pending JPH03108294A (en) | 1989-09-21 | 1989-09-21 | Printed heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03108294A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11122840B2 (en) | 2016-01-26 | 2021-09-21 | Haydale Graphene Industries Plc | Heatable garment, fabrics for such garments, and methods of manufacture |
-
1989
- 1989-09-21 JP JP24332989A patent/JPH03108294A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11122840B2 (en) | 2016-01-26 | 2021-09-21 | Haydale Graphene Industries Plc | Heatable garment, fabrics for such garments, and methods of manufacture |
| US11918061B2 (en) | 2016-01-26 | 2024-03-05 | Haydale Graphene Industries Plc | Heatable garment, fabrics for such garments, and methods of manufacture |
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