JPH10199658A - Heating roller - Google Patents
Heating rollerInfo
- Publication number
- JPH10199658A JPH10199658A JP1766297A JP1766297A JPH10199658A JP H10199658 A JPH10199658 A JP H10199658A JP 1766297 A JP1766297 A JP 1766297A JP 1766297 A JP1766297 A JP 1766297A JP H10199658 A JPH10199658 A JP H10199658A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- heating roller
- hardness
- feed
- ring
- 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
Landscapes
- Fixing For Electrophotography (AREA)
- Control Of Resistance Heating (AREA)
Abstract
Description
【0001】[0001]
【発明が属する技術分野】本発明は、例えば電子写真複
写機、レーザプリンタ、ファクシミリ等におけるトナー
像定着装置などに用いられる加熱ローラに関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating roller used for a toner image fixing device in an electrophotographic copying machine, a laser printer, a facsimile, and the like.
【0002】[0002]
【従来の技術】電子写真複写機等において、記録材上に
形成されたトナー像を加熱定着させるための方式とし
て、従来より、加熱ローラとこれに対接配置された加圧
ローラとの間に、未定着トナー像が形成された記録材を
通過させることにより、前記未定着トナー像を記録材に
定着させるヒートローラ方式が広く知られている。2. Description of the Related Art In an electrophotographic copying machine or the like, as a method for heating and fixing a toner image formed on a recording material, conventionally, a method has been proposed in which a heating roller and a pressure roller disposed in contact with the heating roller are fixed. A heat roller method of fixing the unfixed toner image on the recording material by passing the recording material on which the unfixed toner image is formed is widely known.
【0003】近年、特開昭56−109381号、特開
昭63−182684号、特開平6−186877号に
示されているように、円柱状外周面を有する金属基材の
外周面上に発熱抵抗体が設けられている加熱ローラが知
られている。このような従来の加熱ローラを図面を用い
て説明する。In recent years, as disclosed in JP-A-56-109381, JP-A-63-182684, and JP-A-6-186877, heat is generated on the outer peripheral surface of a metal substrate having a cylindrical outer peripheral surface. A heating roller provided with a resistor is known. Such a conventional heating roller will be described with reference to the drawings.
【0004】図3は、従来の加熱ローラの構成説明図で
ある。加熱ローラ10は、円柱状の外周面を有する円筒
状の金属基材11と、この金属基材11の外表面上に形
成された絶縁膜12と、この絶縁膜12上に積層された
発熱抵抗体13と、この発熱抵抗体13を被覆するよう
に形成された保護膜14と、この保護膜14上に形成さ
れた離型層15と、発熱抵抗体13に電流を流すための
給電リング21,22と、そして、それぞれの給電リン
グ21,22に接触しながら電圧を印加するための給電
部材である給電ブラシ31,32を備えてなる。FIG. 3 is an explanatory view of the structure of a conventional heating roller. The heating roller 10 includes a cylindrical metal base material 11 having a cylindrical outer peripheral surface, an insulating film 12 formed on an outer surface of the metal base material 11, and a heating resistor laminated on the insulating film 12. Body 13, a protective film 14 formed to cover the heating resistor 13, a release layer 15 formed on the protection film 14, and a power supply ring 21 for flowing a current through the heating resistor 13. , 22 and power supply brushes 31, 32 as power supply members for applying a voltage while contacting the respective power supply rings 21, 22.
【0005】発熱抵抗体13は、図4の展開模式図に示
されるように、発熱抵抗体13の両端部に設けられた終
端電極131、132を有している。発熱抵抗体13の
終端電極131,132と給電リング21,22の接合
は、焼き嵌め技術を用いて、給電リング21,22の内
周面と終端電極131,132が直接接するようにして
固定されている。The heating resistor 13 has terminal electrodes 131 and 132 provided at both ends of the heating resistor 13 as shown in an exploded schematic view of FIG. The terminal electrodes 131 and 132 of the heat generating resistor 13 and the power supply rings 21 and 22 are fixed to each other by using shrink fitting technology so that the inner peripheral surfaces of the power supply rings 21 and 22 and the terminal electrodes 131 and 132 are in direct contact with each other. ing.
【0006】上記発熱抵抗体13は、銀−パラジウム合
金を導電体とする厚さ5〜20μmのものである。The heating resistor 13 has a thickness of 5 to 20 μm and is made of a silver-palladium alloy as a conductor.
【0007】上記給電リング21,22は、導電性が良
好であると共に低コストとの関係により、銅や真鍮のも
のであり、硬度はビッカースカタサで60〜130HV
である。The power supply rings 21 and 22 are made of copper or brass because of their good conductivity and low cost, and have a hardness of 60 to 130 HV by Vickers Katasa.
It is.
【0008】更に、上記給電ブラシ31,32は、導電
性を有すると共に給電リング21,22との滑りを良く
するために黒鉛を含む導電性部材であり、硬度はビッカ
ースカタサで100〜140HVである。Further, the power supply brushes 31, 32 are conductive members having conductivity and containing graphite in order to improve sliding with the power supply rings 21, 22, and have a hardness of 100 to 140 HV by Vickers Katasa. .
【0009】そして、図3に示すように、不図示の駆動
機構により金属基材11を回転させることにより、給電
ブラシ31,32に接触しながら給電リング21,22
が回転し、給電リング21,22に電圧が印加され、発
熱抵抗体13が発熱して加熱ローラとして作用すること
ができる。Then, as shown in FIG. 3, the power supply rings 21 and 22 are brought into contact with the power supply brushes 31 and 32 by rotating the metal base 11 by a drive mechanism (not shown).
Rotates, and a voltage is applied to the power supply rings 21 and 22, and the heating resistor 13 generates heat and can function as a heating roller.
【0010】[0010]
【発明が解決しようとする課題】しかしながら、従来の
加熱ローラの場合、給電リング21,22の硬度と給電
ブラシ31,32の硬度が等しいか、または、その差が
小さいため、給電リング21,22が給電ブラシ31,
32と接触して回転するときに摩擦抵抗が大きくなり、
給電リング21,22と給電ブラシ31,32の双方が
磨耗するという問題があった。また、給電リング21,
22と給電ブラシ31,32の双方の磨耗による導電性
部材粉が発生するという問題があった。However, in the case of the conventional heating roller, since the hardness of the power supply rings 21 and 22 and the hardness of the power supply brushes 31 and 32 are equal or the difference therebetween is small, the power supply rings 21 and 22 are small. Is the power supply brush 31,
The frictional resistance increases when rotating in contact with 32,
There is a problem that both the power supply rings 21 and 22 and the power supply brushes 31 and 32 are worn. Also, the power supply ring 21,
There is a problem that the conductive member powder is generated due to wear of both the power supply brushes 22 and the power supply brushes 31 and 32.
【0011】そして、この導電性部材粉が給電リング2
1,22と給電ブラシ31,32の間で擦り合わされる
ことにより給電リング21,22の表面に微小の凹凸が
できたり、導電性部材粉が給電リング21,22と給電
ブラシ31,32の間に存在することにより、給電リン
グ21,22と給電ブラシ31,32の接触面積が小さ
くなり、従来の加熱ローラでは200時間程度使用する
と、給電リング21,22と給電ブラシ31,32との
間でスパークが発生し、最終的には、給電リング21,
22及び給電ブラシ31,32が焼損するという問題が
あった。Then, the conductive member powder is supplied to the power supply ring 2.
The surfaces of the power supply rings 21 and 22 have minute irregularities due to friction between the power supply rings 21 and 22 and the power supply brushes 31 and 32. , The contact area between the power supply rings 21 and 22 and the power supply brushes 31 and 32 is reduced. When the conventional heating roller is used for about 200 hours, the contact area between the power supply rings 21 and 22 and the power supply brushes 31 and 32 is reduced. A spark is generated, and finally, the power supply ring 21,
There is a problem that the power supply brushes 22 and the power supply brushes 31 and 32 are burned.
【0012】本発明は、以上のような事情に基づいてな
されたものであって、その目的は、給電リングと給電ブ
ラシの磨耗を少なくし、給電リングと給電ブラシとの間
でスパークが発生しない加熱ローラを提供することにあ
る。The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce wear of a power supply ring and a power supply brush, and to prevent a spark from being generated between the power supply ring and the power supply brush. It is to provide a heating roller.
【0013】[0013]
【課題を解決するための手段】上記課題を解決するため
に、請求項1に記載の加熱ローラは、円柱状の外周面を
有する金属基材と、該金属基材の外周面を覆うように形
成された絶縁膜と、該絶縁膜上に積層され通電によって
発熱する発熱抵抗体と、該発熱抵抗体に電流を流すため
の給電リングと、当該給電リングに電圧を印加するため
の給電部材と、を有する加熱ローラにおいて、前記給電
部材と接触する前記給電リングの表面に、給電部材より
硬度が高い高硬度部材が被覆されていることを特徴とす
る。According to a first aspect of the present invention, there is provided a heating roller, comprising: a metal base having a cylindrical outer peripheral surface; A formed insulating film, a heating resistor laminated on the insulating film and generating heat by energization, a power supply ring for flowing a current through the heating resistor, and a power supply member for applying a voltage to the power supply ring. , Wherein the surface of the power supply ring that comes into contact with the power supply member is coated with a high hardness member having a higher hardness than the power supply member.
【0014】上記課題を解決するために、請求項2に記
載の加熱ローラは、請求項1に記載の加熱ローラであっ
て、特に、前記給電部材は、黒鉛を含む導電性部材であ
り、前記給電リングに被覆された高硬度部材は、無電解
ニッケルメッキ、或いは、硬質クロムメッキであること
を特徴とする。In order to solve the above-mentioned problem, a heating roller according to claim 2 is the heating roller according to claim 1, and in particular, the power supply member is a conductive member containing graphite. The high hardness member coated on the power supply ring is characterized by electroless nickel plating or hard chrome plating.
【0015】上記課題を解決するために、請求項3に記
載の加熱ローラは、円柱状の外周面を有する金属基材
と、該金属基材の外周面を覆うように形成された絶縁膜
と、該絶縁膜上に積層され通電によって発熱する発熱抵
抗体と、該発熱抵抗体に電流を流すための給電リング
と、当該給電リングに電圧を印加するための給電部材
と、を有する加熱ローラにおいて、前記給電部材と接触
する前記給電リングは、前記給電部材より硬度が高いこ
とを特徴とする。According to another aspect of the present invention, there is provided a heating roller comprising: a metal base having a cylindrical outer peripheral surface; and an insulating film formed to cover the outer peripheral surface of the metal base. A heating roller laminated on the insulating film and generating heat by energization, a power supply ring for flowing a current through the heat generation resistor, and a power supply member for applying a voltage to the power supply ring; The hardness of the power supply ring that contacts the power supply member is higher than that of the power supply member.
【0016】上記課題を解決するために、請求項4に記
載の加熱ローラは、請求項3に記載の加熱ローラであっ
て、特に、前記給電部材は、黒鉛を含む導電性部材であ
り、前記給電リングは、鉄、タングステン、モリブデン
の単体、又は、前記金属のそれぞれの合金、又は、SU
Sであることを特徴とする。In order to solve the above problem, a heating roller according to a fourth aspect is the heating roller according to the third aspect, and in particular, the power supply member is a conductive member containing graphite. The power supply ring may be iron, tungsten, molybdenum alone, or an alloy of each of the above metals, or SU.
S.
【0017】[0017]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて説明する。図1は、本発明の加熱ローラ1の構成
を示す一部破断正面図である。本発明の加熱ローラ1の
給電リング21,22は、銅製であり内径21mm、外
径23mm、幅5mmであり、硬度はビッカースカタサ
で約100HVである。給電部材である給電ブラシ3
1,32は、黒鉛と銅を含む導電性部材であり、硬度は
ビッカースカタサで約140HVである。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway front view showing a configuration of a heating roller 1 of the present invention. The power supply rings 21 and 22 of the heating roller 1 of the present invention are made of copper, have an inner diameter of 21 mm, an outer diameter of 23 mm, and a width of 5 mm, and have a hardness of about 100 HV by Vickers Katasa. Power supply brush 3 as a power supply member
Reference numerals 1 and 32 denote conductive members containing graphite and copper, and have a hardness of about 140 HV by Vickers Katasa.
【0018】図2は、給電リングの説明図であり、図1
と図2に示されるように少なくとも給電ブラシ31,3
2と接触する給電リング21,22の表面には、高硬度
部材Kが被覆されている。この高硬度部材Kは、無電解
ニッケルメッキ、或いは、硬質クロムメッキであり、硬
度はビッカースカタサで無電解ニッケルメッキでは45
0HV以上を確保でき、硬質クロムメッキでは750H
V以上を確保できる。なお、それぞれのメッキの耐熱温
度は400℃以上であり、給電によって発生する熱の影
響を受けるものではない。つまり、高硬度部材Kは、給
電ブラシ31,32より著しく硬度が高いものである。
図1及び図2に示す高硬度部材Kは無電解ニッケルメッ
キであり、メッキ厚は10〜20μmである。FIG. 2 is an explanatory view of the power supply ring, and FIG.
And at least the power supply brushes 31, 3 as shown in FIG.
The surfaces of the power supply rings 21 and 22 that come into contact with 2 are coated with a high hardness member K. The high hardness member K is electroless nickel plated or hard chromium plated, and has a hardness of 45 by Vickers Katasa and electroless nickel plated.
0 HV or more can be secured, and 750H with hard chrome plating
V or more can be secured. The heat-resistant temperature of each plating is 400 ° C. or higher, and is not affected by heat generated by power supply. That is, the high hardness member K has significantly higher hardness than the power supply brushes 31 and 32.
The high hardness member K shown in FIGS. 1 and 2 is electroless nickel plated, and has a plating thickness of 10 to 20 μm.
【0019】また、上記の実施例においては、給電リン
グ21,22は硬度が低い銅に高硬度部材Kを被覆した
ものであるが、給電リング21,22そのものを硬度が
高い鉄、タングステン、モリブデンの単体、又は、前記
金属のそれぞれの合金、又は、SUSを用いても良い。
具体的には、合金とは、鉄−タングステン合金、鉄−タ
ングステン−モリブデン合金、タングステン−チタン−
コバルト−炭素の超硬合金、SUS316等があげられ
る。鉄はビッカースカタサが200〜260HV、SU
S316はビッカースカタサが200HV、タングステ
ンはビッカースカタサが550HV、モリブデンはビッ
カースカタサが250HVであり、給電ブラシ31,3
2の硬度より高いものである。また、鉄の場合は、熱処
理することにより容易に硬度を上げることができる。In the above-described embodiment, the power supply rings 21 and 22 are made of copper having a low hardness and coated with a high hardness member K. However, the power supply rings 21 and 22 themselves are made of iron, tungsten or molybdenum having a high hardness. May be used, or an alloy of each of the above metals or SUS may be used.
Specifically, alloys include iron-tungsten alloy, iron-tungsten-molybdenum alloy, tungsten-titanium-
Cobalt-carbon cemented carbide, SUS316 and the like. For iron, Vickers Katasa is 200-260HV, SU
In S316, Vickers Katasa is 200 HV, tungsten is 550 HV in Vickers Katasa, molybdenum is 250 HV in Vickers Katasa, and the power supply brushes 31 and 3 are provided.
The hardness is higher than 2. In the case of iron, the hardness can be easily increased by heat treatment.
【0020】そして、図1に示すように、不図示の駆動
機構により金属基材11を回転させることにより、給電
ブラシ31,32に接触しながら給電リング21,22
が回転し、給電リング21,22の給電ブラシ31,3
2と接触する表面に給電ブラシ31,32より硬度が高
い高硬度部材Kが被覆されているので、この高硬度部材
Kが磨耗することがなく、勿論、給電リング21,22
が磨耗することがない。なお、給電リング21,22そ
のものを硬度が高い鉄、タングステン、モリブデンの単
体、又は、前記金属のそれぞれの合金、又は、SUSを
用いた場合も、同様に給電リング21,22が磨耗する
ことがない。Then, as shown in FIG. 1, the power supply rings 21 and 22 are brought into contact with the power supply brushes 31 and 32 by rotating the metal base 11 by a driving mechanism (not shown).
Are rotated, and the power supply brushes 31, 3 of the power supply rings 21, 22 are rotated.
2 is coated with a high-hardness member K having a higher hardness than the power supply brushes 31 and 32, so that the high-hardness member K is not worn, and, of course, the power supply rings 21 and 22 are not worn.
Is not worn. When the power supply rings 21 and 22 themselves are made of iron, tungsten, or molybdenum having high hardness, or an alloy of each of the above metals, or SUS, the power supply rings 21 and 22 may be similarly worn. Absent.
【0021】また、給電ブラシ31,32に対して高硬
度部材Kが著しく高い硬度であるので、給電ブラシ3
1,32と高硬度部材Kとの摩擦抵抗が小さくなり、給
電ブラシ31,32の磨耗を抑えることができる。この
結果、給電ブラシ31,32の磨耗による導電性部材粉
の発生を防止することができる。なお、給電リング2
1,22そのものを硬度が高い鉄、タングステン、モリ
ブデンの単体、又は、前記金属のそれぞれの合金、又
は、SUSを用いた場合も、同様に給電ブラシ31,3
2と給電リング21,22との摩擦抵抗が小さくなり、
給電ブラシ31,32の磨耗を抑えることができる。こ
の結果、給電ブラシ31,32の磨耗による導電性部材
粉の発生を防止することができる。Since the high hardness member K has an extremely high hardness with respect to the power supply brushes 31 and 32, the power supply brush 3
The frictional resistance between the high-hardness member K and the high-hardness member K is reduced, and wear of the power supply brushes 31 and 32 can be suppressed. As a result, generation of conductive member powder due to wear of the power supply brushes 31, 32 can be prevented. The power supply ring 2
The power supply brushes 31 and 3 can also be formed by using iron, tungsten, or molybdenum alone having high hardness, or an alloy of each of the above metals, or SUS.
2, the frictional resistance between the power supply rings 21 and 22 is reduced,
Wear of the power supply brushes 31, 32 can be suppressed. As a result, generation of conductive member powder due to wear of the power supply brushes 31, 32 can be prevented.
【0022】さらに、給電ブラシ31,32の磨耗によ
る導電性部材粉が発生したとしても、給電ブラシ31,
32と接触する給電リング21,22の表面には高硬度
部材Kが被覆されてその表面が著しく硬くなっているの
で、導電性部材粉によって高硬度部材Kが削り取られる
ことがなく、給電リング21,22の表面に微小な凹凸
ができることがない。この結果、給電リング21,22
と給電ブラシ31,32との間でスパークが発生するこ
とがない。具体的には、2000時間加熱ローラを使用
しても、スパークが発生しなかった。なお、給電リング
21,22そのものを硬度が高い鉄、タングステン、モ
リブデンの単体、又は、前記金属のそれぞれの合金、又
は、SUSを用いた場合も、同様に給電リング21,2
2の表面に微小な凹凸ができることがない。よって、給
電リング21,22と給電ブラシ31,32との間でス
パークが発生することがなく、具体的には、2000時
間加熱ローラを使用しても、スパークが発生しなかっ
た。Further, even if the conductive member powder is generated due to the abrasion of the power supply brushes 31, 32, the power supply brushes 31, 32 may be used.
Since the surfaces of the power supply rings 21 and 22 that are in contact with 32 are coated with the high-hardness member K and the surface is extremely hard, the high-hardness member K is not scraped off by the conductive member powder, and the power supply ring 21 is not cut off. , 22 are not formed. As a result, the power supply rings 21 and 22
No spark is generated between the power supply brushes 31 and 32. Specifically, no spark was generated even when the heating roller was used for 2000 hours. When the power supply rings 21 and 22 are made of iron, tungsten, or molybdenum having high hardness, or an alloy of each of the above metals, or SUS, the power supply rings 21 and 22 are similarly formed.
No minute irregularities are formed on the surface of No. 2. Therefore, no spark was generated between the power supply rings 21 and 22 and the power supply brushes 31 and 32. Specifically, no spark was generated even when the heating roller was used for 2000 hours.
【0023】上記のような効果を奏するためには、高硬
度部材Kの硬度、または、給電リング21,22そのも
のの硬度であるビッカースカタサが給電ブラシ31,3
2のビッカースカタサより2倍以上であることが望まし
い。なお、図1および図2において、図3及び図4と同
一符号は同一部分を示す。In order to achieve the above-described effects, the Vickers Katasa, which is the hardness of the high-hardness member K or the hardness of the power supply rings 21 and 22 itself, is applied to the power supply brushes 31 and 3.
Desirably, it is at least twice as large as Vickers Katasa. 1 and 2, the same reference numerals as those in FIGS. 3 and 4 indicate the same parts.
【0024】[0024]
【発明の効果】本発明の加熱ローラによれば、給電部材
に接触しながら給電リングが回転し、給電リングの給電
部材と接触する表面に給電部材より硬度が高い高硬度部
材が被覆されているので、この高硬度部材Kが磨耗する
ことがなく、即ち、給電リングが磨耗することがなく、
また、給電部材の磨耗を抑えることができ、更に、長時
間使用しても給電リングと給電部材との間でスパークが
発生しない加熱ローラとなる。According to the heating roller of the present invention, the power supply ring rotates while being in contact with the power supply member, and the surface of the power supply ring in contact with the power supply member is covered with a high hardness member having a higher hardness than the power supply member. Therefore, the high-hardness member K does not wear, that is, the power supply ring does not wear,
In addition, the heating roller can suppress abrasion of the power supply member, and does not generate a spark between the power supply ring and the power supply member even when used for a long time.
【0025】本発明の加熱ローラによれば、給電部材に
接触しながら給電リングが回転し、給電リングが給電部
材より硬度が高い部材であるので、給電リングが磨耗す
ることがなく、また、給電部材の磨耗を抑えることがで
き、更に、長時間使用しても給電リングと給電部材との
間でスパークが発生しない加熱ローラとなる。According to the heating roller of the present invention, the power supply ring rotates while being in contact with the power supply member, and the power supply ring is a member having a higher hardness than the power supply member. The heating roller can suppress the abrasion of the member, and does not generate a spark between the power supply ring and the power supply member even when used for a long time.
【図1】本発明の加熱ローラを示す一部破断正面図であ
る。FIG. 1 is a partially cutaway front view showing a heating roller of the present invention.
【図2】本発明の加熱ローラの給電リングの説明図であ
る。FIG. 2 is an explanatory view of a power supply ring of a heating roller according to the present invention.
【図3】従来の加熱ローラを示す一部破断正面図であ
る。FIG. 3 is a partially cutaway front view showing a conventional heating roller.
【図4】本発明の加熱ローラと従来の加熱ローラに共通
する発熱抵抗体の展開模式図である。FIG. 4 is a developed schematic view of a heating resistor common to the heating roller of the present invention and a conventional heating roller.
1 加熱ローラ 11 金属基材 12 絶縁膜 13 発熱抵抗体 131 終端電極 132 終端電極 14 保護膜 15 離型層 21 給電リング 22 給電リング 31 給電ブラシ 32 給電ブラシ K 高硬度部材 DESCRIPTION OF SYMBOLS 1 Heating roller 11 Metal base material 12 Insulating film 13 Heating resistor 131 Termination electrode 132 Termination electrode 14 Protective film 15 Release layer 21 Power supply ring 22 Power supply ring 31 Power supply brush 32 Power supply brush K High hardness member
Claims (4)
と、 該発熱抵抗体に電流を流すための給電リングと、 当該給電リングに電圧を印加するための給電部材と、を
有する加熱ローラにおいて、 前記給電部材と接触する前記給電リングの表面に、前記
給電部材より硬度が高い高硬度部材が被覆されているこ
とを特徴とする加熱ローラ。A metal substrate having a cylindrical outer peripheral surface; an insulating film formed so as to cover the outer peripheral surface of the metal substrate; a heating resistor laminated on the insulating film and generating heat by energization; A heating roller having a power supply ring for supplying a current to the heating resistor, and a power supply member for applying a voltage to the power supply ring; A heating roller coated with a high hardness member having a higher hardness than the member.
あり、 前記給電リングに被覆された高硬度部材は、無電解ニッ
ケルメッキ、或いは、硬質クロムメッキであることを特
徴とする請求項1に記載の加熱ローラ。2. The power supply member is a conductive member containing graphite, and the high-hardness member coated on the power supply ring is electroless nickel plating or hard chrome plating. 2. The heating roller according to 1.
と、 該発熱抵抗体に電流を流すための給電リングと、 当該給電リングに電圧を印加するための給電部材と、を
有する加熱ローラにおいて、 前記給電部材と接触する前記給電リングは、前記給電部
材より硬度が高いことを特徴とする加熱ローラ。3. A metal substrate having a cylindrical outer peripheral surface, an insulating film formed so as to cover the outer peripheral surface of the metal substrate, and a heating resistor laminated on the insulating film and generating heat by energization. A heating roller having a power supply ring for flowing a current through the heating resistor and a power supply member for applying a voltage to the power supply ring, wherein the power supply ring in contact with the power supply member is more Heating roller characterized by high hardness.
あり、 前記給電リングは、鉄、タングステン、モリブデンの単
体、又は、前記金属のそれぞれの合金、又は、SUSで
あることを特徴とする請求項3に記載の加熱ローラ。4. The power supply member is a conductive member containing graphite, and the power supply ring is a simple substance of iron, tungsten, molybdenum, an alloy of each of the metals, or SUS. The heating roller according to claim 3, wherein
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1766297A JPH10199658A (en) | 1997-01-17 | 1997-01-17 | Heating roller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1766297A JPH10199658A (en) | 1997-01-17 | 1997-01-17 | Heating roller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10199658A true JPH10199658A (en) | 1998-07-31 |
Family
ID=11950075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1766297A Pending JPH10199658A (en) | 1997-01-17 | 1997-01-17 | Heating roller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10199658A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011065005A (en) * | 2009-09-18 | 2011-03-31 | Konica Minolta Business Technologies Inc | Cylindrical heating element and fixing device |
JP2011191471A (en) * | 2010-03-15 | 2011-09-29 | Konica Minolta Business Technologies Inc | Fixing device and image forming apparatus |
CN103917923A (en) * | 2011-11-04 | 2014-07-09 | 佳能株式会社 | Fixing apparatus |
-
1997
- 1997-01-17 JP JP1766297A patent/JPH10199658A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011065005A (en) * | 2009-09-18 | 2011-03-31 | Konica Minolta Business Technologies Inc | Cylindrical heating element and fixing device |
JP2011191471A (en) * | 2010-03-15 | 2011-09-29 | Konica Minolta Business Technologies Inc | Fixing device and image forming apparatus |
US8582998B2 (en) | 2010-03-15 | 2013-11-12 | Konica Minolta Business Technologies, Inc | Fixing device and image forming apparatus |
CN103917923A (en) * | 2011-11-04 | 2014-07-09 | 佳能株式会社 | Fixing apparatus |
US9182713B2 (en) | 2011-11-04 | 2015-11-10 | Canon Kabushiki Kaisha | Fixing apparatus |
CN103917923B (en) * | 2011-11-04 | 2016-06-01 | 佳能株式会社 | Fixing device |
US9423737B2 (en) | 2011-11-04 | 2016-08-23 | Canon Kabushiki Kaisha | Fixing apparatus |
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