JPH05190260A - Manufacture of heating unit - Google Patents

Manufacture of heating unit

Info

Publication number
JPH05190260A
JPH05190260A JP579792A JP579792A JPH05190260A JP H05190260 A JPH05190260 A JP H05190260A JP 579792 A JP579792 A JP 579792A JP 579792 A JP579792 A JP 579792A JP H05190260 A JPH05190260 A JP H05190260A
Authority
JP
Japan
Prior art keywords
film
electric resistance
resistance film
resistance value
polishing
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.)
Granted
Application number
JP579792A
Other languages
Japanese (ja)
Other versions
JP3207478B2 (en
Inventor
Shinobu Obata
忍 小畠
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.)
Rohm Co Ltd
Original Assignee
Rohm 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 Rohm Co Ltd filed Critical Rohm Co Ltd
Priority to JP579792A priority Critical patent/JP3207478B2/en
Publication of JPH05190260A publication Critical patent/JPH05190260A/en
Application granted granted Critical
Publication of JP3207478B2 publication Critical patent/JP3207478B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To prevent a yield rate from worsening by forming an electric resistance film in a band shape on an upper surface of an insulating base board, and polishing a surface of the film in the lengthwise direction by an abrasive sheet or the like. CONSTITUTION:A screen plate 2 having a window hole 2a in an upper surface of a heat resistant insulating base board 1 is overlapped to apply screen printing of Ag-Pd paste to the window hole 2a. Sintering is performed to prepare a band-shaped electric resistance film 3. Next, Ag paste is applied to both end upper surfaces of the base board 1 to prepare conduction terminals 4, 5. A resistance value of the film 3 is measured by a measuring device 6. When the resistance value is lower than a standard range, in a measured condition, an abrasive sheet 9 of width S=L is pressed to a part of effective length L by a rotating rubber roller 10, to polish a surface of the film 3 in the lengthwise direction. A film thickness is decreased along the lengthwise direction of the effective length part by polishing to increase the resistance value. When polished in the predetermined standard, the roller 10 is pulled up to stop polishing.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、例えば、複写機におけ
るトナー定着部の加熱ヒータ等として使用する加熱体を
製造する方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a heating element used as a heater for a toner fixing portion of a copying machine.

【0002】[0002]

【従来の技術】従来、複写機におけるトナー定着部の加
熱ヒータ等として使用される加熱体は、例えば、特開平
2−65086号公報及び特開平2−129883号公
報等に記載されているように、長方形状の絶縁基板の上
面に、帯状の電気抵抗膜を、前記絶縁基板の長手方向に
沿って一直線状に延びるように形成すると共に、この電
気抵抗膜の両端に対する通電端子部を形成し、前記電気
抵抗膜を、その両端の通電端子部からの電流の印加によ
って発熱するように構成している。
2. Description of the Related Art Conventionally, a heating element used as a heater for a toner fixing portion of a copying machine is disclosed in, for example, Japanese Patent Application Laid-Open Nos. 2-65086 and 2-129883. A strip-shaped electric resistance film is formed on the upper surface of the rectangular insulating substrate so as to extend linearly along the longitudinal direction of the insulating substrate, and current-carrying terminal portions are formed for both ends of the electric resistance film. The electric resistance film is configured to generate heat by applying a current from the current-carrying terminal portions at both ends thereof.

【0003】また、従来、この種の加熱体における帯状
の電気抵抗膜は、絶縁基板の上面に当該電気抵抗膜を構
成する材料ペーストをスクリーン印刷にて帯状に塗着し
たのち焼成することによって形成するようにしている。
Further, conventionally, a strip-shaped electric resistance film in this type of heating body is formed by applying a material paste constituting the electric resistance film on the upper surface of an insulating substrate in a band shape by screen printing and then firing the paste. I am trying to do it.

【0004】[0004]

【発明が解決しようとする課題】ところで、前記加熱体
の電気抵抗膜における発熱量は、その抵抗値によって決
まり、この抵抗値は、当該電気抵抗膜における断面積
(つまり、幅寸法及び厚さ寸法)、及び当該電気抵抗膜
における長さ寸法、並びに当該電気抵抗膜における固有
の比抵抗によって決定されるから、加熱体の電気抵抗体
における発熱量を、複数個の各加熱体について同じ値に
揃えるには、前記断面積及び長さ寸法並びに比抵抗を、
複数個の各加熱体について同じにすることが必要であ
る。
By the way, the amount of heat generated in the electric resistance film of the heating element is determined by its resistance value, and this resistance value is the cross-sectional area (that is, the width dimension and the thickness dimension) of the electric resistance film. ), And the length of the electric resistance film, and the specific resistance of the electric resistance film, the heat generation amount of the electric resistance of the heating element is set to the same value for each of the heating elements. Is the cross-sectional area and length, and the specific resistance,
It is necessary to make the same for each of the plurality of heating elements.

【0005】しかし、従来は、前記加熱体における電気
抵抗膜を、前記のように材料ペーストをスクリーン印刷
にて塗着したのち焼成することによって形成するように
しているため、前記電気抵抗膜における断面の形状及び
寸法が、複数個の各加熱体について不揃いになるから、
前記電気抵抗膜における抵抗値を、複数個の各加熱体に
ついて同じ値にすることができず、換言すると、各加熱
体の電気抵抗膜における抵抗値、つまり発熱量に大きい
バラツキが発生することになる。
However, conventionally, since the electric resistance film in the heating element is formed by applying the material paste by screen printing as described above and then firing, the cross section in the electric resistance film is formed. Since the shapes and dimensions of are not uniform for each heating element,
The resistance value in the electric resistance film cannot be the same value for each of the plurality of heating elements, in other words, the resistance value in the electric resistance film of each heating element, that is, a large variation in the amount of heat generated. Become.

【0006】しかも、前記各加熱体における発熱量のバ
ラツキは、前記電気抵抗膜における比抵抗にも複数個の
各加熱体についてバラツキが存在することで一層増大す
ることにより、抵抗値が所定の規格範囲から外れる率が
多くなるから、所定の規格範囲内に入る抵抗値を有する
加熱体を製造する場合における歩留り率が低いと言う問
題があった。
Moreover, the variation in the amount of heat generated by each heating element is further increased due to the variation in the specific resistance of the electric resistance film of each heating element. Since the rate of deviation from the range increases, there is a problem that the yield rate is low when manufacturing a heating element having a resistance value falling within a predetermined standard range.

【0007】また、前記の方法によって製造された各加
熱体のうち電気抵抗膜における抵抗値が所定規格よりも
低い加熱体については、当該加熱体における電気抵抗膜
の一部をレーザー等にて切欠状にトリミングすることに
よって、その抵抗値が前記所定の規格範囲内に入るよう
に調整するようにすれば、歩留り率を向上できるが、こ
のようにすると、電気抵抗膜の一部が、前記抵抗値調整
のためのトリミングによって欠落して幅狭の状態にな
り、当該部分における発熱量が、他の部分における発熱
量よりも局部的に大きくなるから、前記電気抵抗膜の長
手方向に沿っての温度分布が不揃いになると言う別の問
題を招来するのである。
Further, among the heating elements manufactured by the above method, for the heating element whose resistance value in the electric resistance film is lower than a predetermined standard, a part of the electric resistance film in the heating element is cut out by a laser or the like. If the resistance value is adjusted so as to fall within the predetermined standard range by trimming the film into a predetermined shape, the yield rate can be improved. It becomes missing due to trimming for adjusting the value, resulting in a narrow state, and the amount of heat generated in that portion locally becomes larger than the amount of heat generated in other portions. Another problem is that the temperature distribution becomes uneven.

【0008】本発明は、これらの問題を解消できるよう
にした製造方法を提供することを技術的課題とするもの
である。
[0008] The present invention has a technical object to provide a manufacturing method capable of solving these problems.

【0009】[0009]

【課題を解決するための手段】この技術的課題を達成す
るため本発明は、絶縁基板の上面に、電気抵抗膜を構成
する材料ペーストをスクリーン印刷にて帯状に塗着した
のち焼成することによって帯状の電気抵抗膜を形成し、
次いで、前記電気抵抗膜の表面を、当該電気抵抗膜にお
ける長さ方向に沿って研磨することにした。
According to the present invention, in order to achieve this technical object, a material paste for forming an electric resistance film is applied in a band shape by screen printing on the upper surface of an insulating substrate and then baked. Forming a strip-shaped electric resistance film,
Then, the surface of the electric resistance film was polished along the length direction of the electric resistance film.

【0010】[0010]

【作 用】このように、帯状に形成した電気抵抗膜の
表面を、当該電気抵抗膜における長さ方向に沿って研磨
すると、その膜厚さが長さ方向に沿って薄くなることに
より、当該電気抵抗膜における抵抗値が大きくなるか
ら、前記電気抵抗膜における抵抗値を、当該電気抵抗膜
の表面に対する研磨によって、所定の規格範囲内に入る
ように調整することができるのである。
[Operation] When the surface of the electric resistance film thus formed in a strip shape is polished along the length direction of the electric resistance film, the film thickness becomes thin along the length direction. Since the resistance value of the electric resistance film becomes large, the resistance value of the electric resistance film can be adjusted by polishing the surface of the electric resistance film so as to be within a predetermined standard range.

【0011】[0011]

【発明の効果】従って、本発明によると、複数個の各加
熱体のうち電気抵抗膜における抵抗値が所定規格よりも
低い加熱体については、その電気抵抗膜における長手方
向に沿っての温度を分布を阻害することなく、当該加熱
体における電気抵抗膜の抵抗値を、所定の規格範囲内に
入るように調整することができるから、所定の規格範囲
内に入る抵抗値を有する加熱体を製造する場合における
歩留り率を大幅に向上できて、製造コストの低減を図る
ことができる効果を有する。
As described above, according to the present invention, for a heating element having a resistance value of the electric resistance film lower than a predetermined standard among the plurality of heating elements, the temperature along the longitudinal direction of the electric resistance film is changed. Since the resistance value of the electric resistance film in the heating body can be adjusted to fall within a predetermined standard range without disturbing the distribution, a heating body having a resistance value falling within the predetermined standard range is manufactured. In this case, the yield rate can be greatly improved, and the manufacturing cost can be reduced.

【0012】[0012]

【実施例】以下、本発明の実施例を図面について説明す
る。図1において符号1は、セラミック等の耐熱性絶縁
材料にて長方形に形成した絶縁基板を示し、この絶縁基
板1の上面には、図2に示すように、スリット状の抜き
窓2aを備えたスクリーン板2を重ね、次いで、このス
クリーン板2における抜き窓2a内に、Ag−Pdペー
ストを充填したのち前記スクリーン板2を除去すると言
うスクリーン印刷を施すことによって、前記Ag−Pd
ペーストを一直線の帯状に塗着したのち、加熱炉に入れ
て焼成することにより、前記絶縁基板1の上面に、図3
に示すように、帯状の電気抵抗膜3を形成する。
Embodiments of the present invention will now be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes an insulating substrate formed of a heat-resistant insulating material such as ceramic in a rectangular shape, and an upper surface of this insulating substrate 1 is provided with a slit-shaped window 2a as shown in FIG. By stacking the screen plates 2 and then performing screen printing in which the screen window 2 in the screen plate 2 is filled with Ag-Pd paste and then the screen plate 2 is removed, the Ag-Pd is removed.
After the paste is applied in the form of a straight line, the paste is put in a heating furnace and fired, so that the upper surface of the insulating substrate 1 shown in FIG.
As shown in, a strip-shaped electric resistance film 3 is formed.

【0013】次いで、前記絶縁基板1における両端部の
上面に、Agペーストを塗着するたのち加熱炉で焼成す
ることによって、図4に示すように、前記電気抵抗膜3
の両端に対する通電端子部4,5を形成する。そして、
前記両通電端子部4,5の間に所定の電流を印加するこ
とにより、前記電気抵抗膜3における抵抗値を、図5に
示すように、抵抗測定器6にて測定する。
Next, Ag paste is applied to the upper surfaces of both ends of the insulating substrate 1 and then fired in a heating furnace, so that the electrical resistance film 3 is formed as shown in FIG.
The energizing terminal portions 4 and 5 are formed on both ends of the. And
A resistance value in the electric resistance film 3 is measured by a resistance measuring device 6 as shown in FIG. 5 by applying a predetermined current between the two energizing terminal portions 4 and 5.

【0014】この抵抗値の測定により、前記電気抵抗膜
3における抵抗値が所定の規格範囲よりも低いと判断さ
れたものについては、図5、図6及び図7に示すよう
に、この電気抵抗膜3における抵抗値を抵抗測定器6に
て測定した状態で、その表面のうち有効長さLの部分に
対して、繰り出しロール7から繰り出されたのち巻き取
りロール8に順次巻き取られる幅寸法S(なお、この幅
寸法Sは、前記有効長さLと等しい)の研磨シート9を
回転するゴム製の押えローラ10にて押圧することによ
り、前記電気抵抗膜3の表面をその長さ方向に沿って研
磨するのである。
When the resistance value of the electric resistance film 3 is judged to be lower than the predetermined standard range by the measurement of the resistance value, as shown in FIGS. In a state where the resistance value of the film 3 is measured by the resistance measuring device 6, a width dimension of the effective length L of the surface of the film 3 which is wound out from the winding roll 7 and then wound around the winding roll 8 in sequence. By pressing the polishing sheet 9 of S (the width S is equal to the effective length L) by the rotating rubber pressing roller 10, the surface of the electric resistance film 3 is moved in the longitudinal direction. It is polished along.

【0015】すると、前記電気抵抗膜3のうち前記有効
長さLの部分は、前記の研磨によって膜厚さが、前記有
効長さLの部分における長さ方向に沿って薄くなること
により、当該電気抵抗膜3における抵抗値が大きくなる
から、その抵抗値が所定の規格範囲内に入ったとき、前
記押えローラ10を上昇することによって、研磨を停止
するのである。
Then, the portion of the effective length L of the electric resistance film 3 is thinned along the length direction of the portion of the effective length L by the polishing, so that Since the resistance value of the electric resistance film 3 becomes large, when the resistance value falls within a predetermined standard range, the pressing roller 10 is raised to stop the polishing.

【0016】これにより、多数個製造される各加熱体の
うち電気抵抗膜における抵抗値が所定規格よりも低い加
熱体については、その電気抵抗膜における長手方向に沿
っての温度を分布を阻害することなく、当該加熱体にお
ける電気抵抗膜の抵抗値を、所定の規格範囲内に入るよ
うに調整することができるから、所定の規格範囲内に入
る抵抗値を有する加熱体を製造する場合における歩留り
率を大幅に向上できるのである。
As a result, among the heating elements manufactured in large numbers, for the heating element whose resistance value in the electric resistance film is lower than a predetermined standard, the temperature distribution along the longitudinal direction of the electric resistance film is obstructed. Since the resistance value of the electric resistance film in the heating body can be adjusted so as to fall within the predetermined standard range, the yield in the case of manufacturing the heating body having the resistance value falling within the predetermined standard range. The rate can be greatly improved.

【0017】なお、前記の研磨に際しては、前記押えロ
ーラ10を、電気抵抗膜3の長手方向に直角の方向に往
復動するようにしても良く、また、前記実施例に記載し
た別の研磨手段を適用しても良いことは言うまでもな
い。
In the polishing, the pressing roller 10 may be reciprocated in a direction perpendicular to the longitudinal direction of the electric resistance film 3, and another polishing means described in the above embodiment. Needless to say, it may be applied.

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

【図1】絶縁基板の斜視図である。FIG. 1 is a perspective view of an insulating substrate.

【図2】前記絶縁基板の上面にスクリーン板を重ねた状
態の斜視図である。
FIG. 2 is a perspective view showing a state where a screen plate is superposed on the upper surface of the insulating substrate.

【図3】前記絶縁基板の上面に電気抵抗膜を帯状に形成
した状態の斜視図である。
FIG. 3 is a perspective view showing a state in which an electric resistance film is formed in a strip shape on the upper surface of the insulating substrate.

【図4】前記電気抵抗膜の両端に通電端子部を形成した
状態の斜視図である。
FIG. 4 is a perspective view showing a state in which current-carrying terminal portions are formed on both ends of the electric resistance film.

【図5】前記電気抵抗膜の表面を研磨している状態の斜
視図である。
FIG. 5 is a perspective view showing a state where the surface of the electric resistance film is being polished.

【図6】図5のVI−VI視拡大断面図である。6 is an enlarged sectional view taken along line VI-VI of FIG.

【図7】図5のVII −VII 視拡大断面図である。FIG. 7 is an enlarged sectional view taken along line VII-VII of FIG.

【符号の説明】[Explanation of symbols]

1 絶縁基板 2 スクリーン板 2a 抜き窓 3 電気抵抗膜 4,5 通電端子部 6 抵抗測定器 9 研磨シート 10 押えローラ DESCRIPTION OF SYMBOLS 1 Insulating substrate 2 Screen plate 2a Opening window 3 Electric resistance film 4, 5 Current-carrying terminal part 6 Resistance measuring device 9 Polishing sheet 10 Presser roller

フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 H05B 3/16 7913−3K Continuation of front page (51) Int.Cl. 5 Identification code Office reference number FI technical display area H05B 3/16 7913-3K

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】絶縁基板の上面に、電気抵抗膜を構成する
材料ペーストをスクリーン印刷にて帯状に塗着したのち
焼成することによって帯状の電気抵抗膜を形成し、次い
で、前記電気抵抗膜の表面を、当該電気抵抗膜における
長さ方向に沿って研磨することを特徴とする加熱体の製
造方法。
1. A band-shaped electric resistance film is formed by applying a material paste for forming an electric resistance film in a band shape by screen printing on an upper surface of an insulating substrate and baking the paste, and then forming the electric resistance film. A method for manufacturing a heating body, comprising polishing the surface along the length direction of the electric resistance film.
JP579792A 1992-01-16 1992-01-16 Heating body manufacturing method Expired - Fee Related JP3207478B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP579792A JP3207478B2 (en) 1992-01-16 1992-01-16 Heating body manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP579792A JP3207478B2 (en) 1992-01-16 1992-01-16 Heating body manufacturing method

Publications (2)

Publication Number Publication Date
JPH05190260A true JPH05190260A (en) 1993-07-30
JP3207478B2 JP3207478B2 (en) 2001-09-10

Family

ID=11621074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP579792A Expired - Fee Related JP3207478B2 (en) 1992-01-16 1992-01-16 Heating body manufacturing method

Country Status (1)

Country Link
JP (1) JP3207478B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6967312B2 (en) 2000-07-19 2005-11-22 Ibiden Co., Ltd. Semiconductor manufacturing/testing ceramic heater, production method for the ceramic heater and production system for the ceramic heater
CN117330842A (en) * 2023-12-01 2024-01-02 长春黄金研究院有限公司 Preparation and detection device of silver powder pulping performance test piece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6967312B2 (en) 2000-07-19 2005-11-22 Ibiden Co., Ltd. Semiconductor manufacturing/testing ceramic heater, production method for the ceramic heater and production system for the ceramic heater
CN117330842A (en) * 2023-12-01 2024-01-02 长春黄金研究院有限公司 Preparation and detection device of silver powder pulping performance test piece
CN117330842B (en) * 2023-12-01 2024-02-27 长春黄金研究院有限公司 Preparation and detection device of silver powder pulping performance test piece

Also Published As

Publication number Publication date
JP3207478B2 (en) 2001-09-10

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