JPS5821279A - Roll heater for fixing of toner in copying machine - Google Patents
Roll heater for fixing of toner in copying machineInfo
- Publication number
- JPS5821279A JPS5821279A JP12029781A JP12029781A JPS5821279A JP S5821279 A JPS5821279 A JP S5821279A JP 12029781 A JP12029781 A JP 12029781A JP 12029781 A JP12029781 A JP 12029781A JP S5821279 A JPS5821279 A JP S5821279A
- Authority
- JP
- Japan
- Prior art keywords
- heater
- temp
- electrode
- metal roller
- sliding
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
- G03G15/2057—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating relating to the chemical composition of the heat element and layers thereof
Abstract
Description
【発明の詳細な説明】
本発明は複写機に使用されるトナ一定着用ロールヒータ
ーに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a toner constant wear roll heater used in a copying machine.
複写機におけるトナーの定着方式には熱にょる方法、圧
力による方法、熱と圧力による方法などがある。従来の
複写機におけるトナ一定着用ロールヒーターは熱と圧力
による定着方式をとっているが、その構成は紙面の移動
と共に回転するローラ一部と、このローラ一部を加熱す
るためにシーズヒーターやハロゲンランプヒーターナト
ｔ、ローラ一部中心に挿入し固定したヒータ一部と、さ
らにローラ一部表面温度を制御するための温度検知部と
、コントローラーなどの温度調節ユニットより構成され
ている。しかし、上記のような構成ではローラ一部、ヒ
ータ一部の間に熱絶縁層である空気層を介することにな
り、熱効率の面から不利な構成であると言え、ローラ一
部表面温度の所定温度までの立ち上がりに長時間を要し
、高電力のヒータ一部を使用しなければならない。また
、温度制御においても鋭敏な制御ができないなど、熱応
答性の悪い構成でもある。Toner fixing methods in copying machines include heat methods, pressure methods, and heat and pressure methods. The roll heater in conventional copying machines uses heat and pressure to fix the toner, but it consists of a part of the roller that rotates as the paper surface moves, and a sheathed heater or halogen heater to heat this part of the roller. It consists of a lamp heater nut t, a part of the heater inserted and fixed in the center of part of the roller, a temperature detection part for controlling the surface temperature of part of the roller, and a temperature adjustment unit such as a controller. However, in the above configuration, an air layer, which is a thermal insulation layer, is interposed between part of the roller and part of the heater, which is disadvantageous in terms of thermal efficiency. It takes a long time to reach the temperature, and some high-power heaters must be used. Furthermore, the structure also has poor thermal responsiveness, such as the inability to perform sensitive temperature control.
本発明はこのような従来の欠点を除去するものであり、
ローラ一部とヒータ一部との熱応答性を良好にし、それ
に伴ない信頼性の高い外部へのす３ペーノ
ード取出しと温度制御ユニットの簡略化を行う構成とす
ることを目的とするものである。The present invention eliminates these conventional drawbacks,
The purpose is to improve the thermal response of part of the roller and part of the heater, and to provide a structure that allows highly reliable extraction of the three-page node to the outside and simplifies the temperature control unit. .
この目的を達成するために本発明は、結晶性樹脂とカー
ボン、金属粉などの導電性粉末との混合物よりなる正の
抵抗温度係数を有する発熱体から構成されたヒータ一部
を、内、外両面に電極層を設けた円筒状に形成し、この
円筒状ヒータ一部を金属ローラ一部内面に絶縁層を介し
て密着させて組み込み、金属ローラ一部と円筒状ヒータ
一部とを共に回転させる構成とし、さらに上記円筒状ヒ
ータ一部の内、外両面電極層に取付けられた摺動電極が
上記金属ローラ一部中心に固定さ扛た固定電極上を摺動
するようにし、上記摺動電極と固定電°極を通じて外部
へのリード取出しを行う構成としたものである。尚、円
筒状ヒータ一部の発熱量、表面温度に関しては、ヒータ
一部に使用される樹脂の種類と導電性粉末との配合比に
よって適宜選・択するものとする。In order to achieve this object, the present invention provides a heating element that is made of a mixture of crystalline resin and conductive powder such as carbon or metal powder and has a positive temperature coefficient of resistance. It is formed into a cylindrical shape with electrode layers on both sides, and a part of the cylindrical heater is built into the inner surface of a part of the metal roller through an insulating layer, so that the part of the metal roller and part of the cylindrical heater rotate together. Further, a sliding electrode attached to the inner and outer electrode layers of a part of the cylindrical heater slides on a fixed electrode fixed to the center of a part of the metal roller, The structure is such that the lead is taken out to the outside through the electrode and the fixed electrode. The amount of heat generated and the surface temperature of the part of the cylindrical heater are appropriately selected depending on the type of resin used in the part of the heater and the blending ratio of the conductive powder.
本発明の構成により、金属ローラ一部の内面全面が円筒
状ヒータ一部からの熱量を空気層を介さずに均一に受け
ることになり、所定温度への早い温度立ち上がり特性及
びローラ一部全面の均一な温度分布特性を持つトナ一定
着用ロールヒーターを構成することとなる。さらに、ヒ
ータ一部として正の抵抗温度係数を有する発熱体を用い
るため、ヒータ一部自身が温度を検知し容量を調節する
機能を持つことにより自己温度制御型のヒーターとして
動作し、温度調節ユニットを省くことができ、低価格化
を提供することともなる。According to the structure of the present invention, the entire inner surface of a part of the metal roller receives the amount of heat uniformly from a part of the cylindrical heater without passing through an air layer. This constitutes a toner constant wear roll heater with uniform temperature distribution characteristics. Furthermore, since a heating element with a positive temperature coefficient of resistance is used as part of the heater, the heater part itself has the function of detecting the temperature and adjusting the capacity, so it operates as a self-temperature control type heater, and the temperature adjustment unit can be omitted, resulting in lower costs.
以下、本発明の一実施例を図面により説明する。An embodiment of the present invention will be described below with reference to the drawings.
図において、結晶性樹脂と導電性粉末の混合物より々る
円筒状ヒータ一部２には、内、外両面にメッキ法あるい
は溶射法などによりそれぞれ独立な電極層（図示せず）
を形成し、摺動電極取付管６に保持さｎた摺動電極４ａ
、４ｈをそれぞれ円筒状ヒータ一部２の内、外面の電極
層と導通せしめ、その円筒状ヒータ一部２を良熱伝導性
で耐熱性のあるフィラー配置、のシリコンもしくはフッ
素系ラバーあるいは樹脂を用いた絶縁層３を介して金属
ローラー・部１内面に密着させて組み込み、ローラ一部
１とヒータ一部２を共に回転させる構成としている。独
立した固定電極８ａ、８ｂはローラ一部１の中心に配置
された固定電極取付棒９にそｎぞれ固定さｎ、この固定
電極ｓａ、ｓｂ上を摺動電極４ａ 、ａｂが摺動するよ
うになっていム固定電極８ａ 、ａｂはローラー軸７ａ
、７ｂ内のブツシュまたはベアリング１０により保持さ
ｎ、外部からのリード、導入部となる。そして、ローラ
ー軸７ａ、７ｂを摺動電極取付管５に取付けらｎたシー
リング板６を介して金属ローラ一部１と結合せしめる。In the figure, a cylindrical heater part 2 made of a mixture of crystalline resin and conductive powder has independent electrode layers (not shown) formed by plating or thermal spraying on both the inner and outer surfaces.
A sliding electrode 4a is formed and held in the sliding electrode mounting tube 6.
, 4h are electrically connected to the inner and outer electrode layers of the cylindrical heater part 2, respectively, and the cylindrical heater part 2 is made of silicone, fluorine-based rubber, or resin with a filler arrangement that has good thermal conductivity and heat resistance. The metal roller part 1 is assembled in close contact with the inner surface of the metal roller part 1 via the used insulating layer 3, and the roller part 1 and the heater part 2 are configured to rotate together. Independent fixed electrodes 8a and 8b are respectively fixed to fixed electrode mounting rods 9 arranged at the center of roller part 1, and sliding electrodes 4a and ab slide on these fixed electrodes sa and sb. The fixed electrode 8a is like this, and ab is the roller shaft 7a.
, 7b, held by a bushing or bearing 10 n, serves as a lead from the outside, an introduction part. Then, the roller shafts 7a and 7b are connected to the metal roller part 1 via a sealing plate 6 attached to the sliding electrode attachment tube 5.
以上、本発明の構成によりローラ一部とヒータ一部間の
熱応答性が良好となり、早い温度立ち上がり特性及び均
一な温度分布特性を有することとなり、さらに回転する
ヒータ一部から摺動電極と固定電極を通じて信頼性良く
リード取出しが行えることとなる。ま几、ヒータ一部に
自己温度制御型発熱体を使用するために、温度調節翼ニ
ツ）１省いて低価格化を提供することともなる。As described above, with the configuration of the present invention, the thermal response between a part of the roller and a part of the heater is good, and it has fast temperature rise characteristics and uniform temperature distribution characteristics. Leads can be taken out reliably through the electrodes. Since a self-temperature-controlled heating element is used in a part of the heater, the temperature control blade (1) can be omitted and the cost can be reduced.
第１図は本発明に係る複写機のトナ一定着用ロールヒー
ターの半断面正面図、第２図は同ロールヒーターにおけ
る内面電極部の拡大断面図、第３図は第２図のＡ−Ａ断
面における断面図、第４図は同じくロールヒーターの外
面電極部の拡大断面図、第６図は第４図のＢ−Ｂ断面に
おける断面図、第６図は同ロールヒーターにおける電極
構成を示す分解斜視図である。
１・・・・・・金属ローラ一部、２・・・・・・円筒状
ヒータ一部、３・・・・・・絶縁層、４ａ、４ｂ・・・
・・・摺動電極、ａａ、ｓｂ・・・・・・固定電極。FIG. 1 is a half-sectional front view of a roll heater for constant toner attachment of a copying machine according to the present invention, FIG. 2 is an enlarged sectional view of the inner electrode portion of the roll heater, and FIG. 3 is a cross-sectional view taken along line A-A in FIG. , FIG. 4 is an enlarged sectional view of the outer electrode portion of the roll heater, FIG. 6 is a sectional view taken along the line B-B in FIG. 4, and FIG. 6 is an exploded perspective view showing the electrode configuration of the roll heater. It is a diagram. DESCRIPTION OF SYMBOLS 1...Part of metal roller, 2...Part of cylindrical heater, 3...Insulating layer, 4a, 4b...
...Sliding electrode, aa, sb...Fixed electrode.
Claims (1)
物よりなる正の抵抗温度係数を有する発熱体から構成さ
れたヒータ一部を、内、外画面に電極層を設けた円筒状
に形成し、この円筒状ヒータ一部を金属ローラ一部内面
に絶縁層を介して密着させて組み込み、上記金属ローラ
一部と円筒状ヒータ一部を共に回転させる構成とし、さ
らに上記円筒状ヒータ一部の内、外画面電極層に取付け
られた摺動電極が、上記金属ローラ一部中心に固定され
た固定電極上を摺動するようにし、上記摺動電極と固定
電極を通じてリード取出しを行う構成とした複写機のト
ナ一定着用ロールヒーター。The part of the heater is made up of a heating element with a positive temperature coefficient of resistance made of a mixture of crystalline resin and conductive powder such as carbon or metal powder, and is formed into a cylindrical shape with electrode layers on the inner and outer screens. , a part of the cylindrical heater is built into the inner surface of a part of the metal roller in close contact with the inner surface of the metal roller via an insulating layer, the part of the metal roller and the part of the cylindrical heater are rotated together, and the part of the cylindrical heater is The sliding electrodes attached to the inner and outer screen electrode layers slide on the fixed electrode fixed at the center of a part of the metal roller, and the lead is taken out through the sliding electrode and the fixed electrode. Copy machine toner constant wear roll heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12029781A JPS5821279A (en) | 1981-07-30 | 1981-07-30 | Roll heater for fixing of toner in copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12029781A JPS5821279A (en) | 1981-07-30 | 1981-07-30 | Roll heater for fixing of toner in copying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5821279A true JPS5821279A (en) | 1983-02-08 |
Family
ID=14782742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12029781A Pending JPS5821279A (en) | 1981-07-30 | 1981-07-30 | Roll heater for fixing of toner in copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5821279A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6373771U (en) * | 1986-10-30 | 1988-05-17 | ||
| WO1994016539A1 (en) * | 1993-01-12 | 1994-07-21 | American Roller Company | Ceramic heater roller and methods of making same |
| US5616263A (en) * | 1992-11-09 | 1997-04-01 | American Roller Company | Ceramic heater roller |
-
1981
- 1981-07-30 JP JP12029781A patent/JPS5821279A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6373771U (en) * | 1986-10-30 | 1988-05-17 | ||
| US5616263A (en) * | 1992-11-09 | 1997-04-01 | American Roller Company | Ceramic heater roller |
| WO1994016539A1 (en) * | 1993-01-12 | 1994-07-21 | American Roller Company | Ceramic heater roller and methods of making same |
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