JPH077232B2 - Heat fixing roll for copier - Google Patents
Heat fixing roll for copierInfo
- Publication number
- JPH077232B2 JPH077232B2 JP61310093A JP31009386A JPH077232B2 JP H077232 B2 JPH077232 B2 JP H077232B2 JP 61310093 A JP61310093 A JP 61310093A JP 31009386 A JP31009386 A JP 31009386A JP H077232 B2 JPH077232 B2 JP H077232B2
- Authority
- JP
- Japan
- Prior art keywords
- slip ring
- layer
- heat fixing
- fixing roll
- copying machine
- 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.)
- Expired - Lifetime
Links
- 230000002265 prevention Effects 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000007751 thermal spraying Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Control Of Resistance Heating (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、複写機に用いる熱定着ロールに関するもの
で、更に述べると電子複写機用熱定着ロールに関するも
のである。Description: FIELD OF THE INVENTION The present invention relates to a heat fixing roll used in a copying machine, and more specifically to a heat fixing roll for an electronic copying machine.
従来の技術 電子複写機には、着色トナーと樹脂を主成分とする乾式
現像剤を支持体上に加熱定着させるために、熱定着ロー
ルが設けられている。2. Description of the Related Art An electronic copying machine is provided with a heat fixing roll in order to heat and fix a dry developer containing a colored toner and a resin as main components on a support.
従来の熱定着ロールは、第２図、第３図に示すように金
属管１の表面に絶縁層２を形成し、その表面に帯状の発
熱抵抗体層３と溝４とを交互にねじ状に形成し、該抵抗
体層３の端部に、ほぼ同一レベルにあるスリップリング
５を、又、その余の部分に附着防止層６を形成すると共
に該スリップリング５に集電子７を当接せしめて抵抗体
層３に給電している。In the conventional heat fixing roll, as shown in FIGS. 2 and 3, an insulating layer 2 is formed on the surface of a metal tube 1, and strip-shaped heating resistor layers 3 and grooves 4 are alternately formed on the surface of the insulating layer 2. The slip ring 5 at almost the same level is formed at the end of the resistor layer 3 and the attachment preventing layer 6 is formed at the remaining portion thereof, and the current collector 7 is brought into contact with the slip ring 5. At least power is supplied to the resistor layer 3.
なお、８、９は、ベアリング、矢印A3は、電流の流れ方
向を示す。In addition, 8 and 9 indicate bearings, and an arrow A3 indicates a current flow direction.
発明が解決しようとする問題点 従来例の熱定着ローラでは、スリップリング５の表面と
附着防止層６上の表面とは、同一レベル上に位置するの
で、附着防止層６上の紙Ｐがずれて矢印A6方向に移動す
ると、スリップリング５と集電子７との間に侵入するこ
とがある。このように紙が侵入すると、スリップリング
５と集電子７との間に火花放電が生じ、紙に着火するの
で火事になる恐れがある。Problems to be Solved by the Invention In the heat fixing roller of the conventional example, the surface of the slip ring 5 and the surface of the adhesion preventing layer 6 are located on the same level, so that the paper P on the adhesion preventing layer 6 is misaligned. If it moves in the direction of the arrow A6, it may enter between the slip ring 5 and the current collector 7. When the paper enters in this way, a spark discharge is generated between the slip ring 5 and the current collector 7, and the paper is ignited, which may cause a fire.
又、スリップリング５は、溶射により形成されるので、
その表面が凹凸状であり、真円度が悪い。Moreover, since the slip ring 5 is formed by thermal spraying,
The surface is uneven and the roundness is poor.
そのため、スリップリング５は、集電子７と完全に面接
触しないので、給電に悪影響を生じる。更に、附着防止
層６の形成後にスリップリング５を形成すると、溶射時
に該防止層６が高温に加熱され損傷してしまう。Therefore, the slip ring 5 does not come into full surface contact with the current collector 7, which adversely affects power supply. Furthermore, if the slip ring 5 is formed after the attachment prevention layer 6 is formed, the prevention layer 6 is heated to a high temperature and damaged during thermal spraying.
そこで、附着防止層６の形成前にスリップリング５を形
成するが、このようにすると、附着防止層６形成時にス
リップリング５が加熱され酸化する。Therefore, the slip ring 5 is formed before the attachment prevention layer 6 is formed. In this case, the slip ring 5 is heated and oxidized when the attachment prevention layer 6 is formed.
この酸化は、その表面だけにとどまらず、溶射により生
じた孔まで浸透し、その内部をも酸化せしめる。This oxidation penetrates not only to the surface but also to the pores generated by thermal spraying, and also oxidizes the inside.
そのため、抵抗が増大し給電に支障をきたすことにな
る。Therefore, the resistance increases and power feeding is hindered.
この発明は、上記事情に鑑みスリップリングと集電子と
の間に紙が入らないようにすることを目的とする。In view of the above circumstances, the present invention has an object to prevent paper from entering between the slip ring and the current collector.
他の目的は、スリップリングの真円度を良くするととも
に、酸化しないようにすることである。Another object is to improve the roundness of the slip ring and prevent it from oxidizing.
問題点を解決するための手段 この発明は円筒状の絶縁性支持体の表面に、発熱抵抗体
層を形成し、該抵抗体層の端部にスリップリングを、
又、その余の部分に附着防止層を形成した複写機用熱定
着ロールにおいて、スリップリングが機械加工により真
円に形成され、その外周面に集電子と当接する凹部を環
状に形成し、かつ、その附着防止層側端部を該附着防止
層より肉厚にし、又、該スリップリングを附着防止層形
成後に、前記抵抗体層に静嵌合せしめたことを特徴とす
る複写機用熱定着ロールにより前記目的を達成しようと
するものである。Means for Solving the Problems The present invention provides a heating resistor layer on the surface of a cylindrical insulating support, and a slip ring at the end of the resistor layer,
Further, in a heat fixing roll for a copying machine, in which a sticking prevention layer is formed in the remaining portion, a slip ring is formed into a perfect circle by machining, and a concave portion that contacts a current collector is formed into an annular shape on the outer peripheral surface thereof, and A heat fixing for a copying machine, characterized in that an end portion of the attachment prevention layer is thicker than the attachment prevention layer, and the slip ring is statically fitted to the resistor layer after the attachment prevention layer is formed. The roll is intended to achieve the above-mentioned object.
作用 予め、附着防止層側より肉厚の端部を備えたスリップリ
ングを真円に機械加工した後、このスリップリングを発
熱抵抗体層に静嵌合して、附着防止層に前記端部を接続
させる。Action A slip ring with a thicker end than the attachment prevention layer is machined in advance into a perfect circle, and then this slip ring is statically fitted to the heating resistor layer, and the end is attached to the attachment prevention layer. To connect.
そして、スリップリングの凹部に集電子を当接させる
と、該集電子とスリップリングとの当接面はスリップリ
ングの端部表面より低い位置となる。附着防止層上の紙
がずれてスリップリング側に移動すると、その紙は、ス
リップリングの端部に進行方向を規制されるので、決し
て集電子とスリップリングとの間に入ることがない。Then, when the current collector is brought into contact with the recess of the slip ring, the contact surface between the current collector and the slip ring becomes lower than the end surface of the slip ring. When the paper on the anti-adhesion layer shifts and moves to the slip ring side, the paper is never entered between the current collector and the slip ring because the traveling direction of the paper is restricted by the end of the slip ring.
実施例 この発明の一実施例を第１図により説明すると、ベアリ
ング18により支持された金属管11の表面に絶縁層12を形
成し、その表面に帯状の発熱抵抗層13と溝14とを交互に
ねじ状に形成する。Embodiment An embodiment of the present invention will be described with reference to FIG. 1. An insulating layer 12 is formed on the surface of a metal tube 11 supported by a bearing 18, and strip-shaped heating resistance layers 13 and grooves 14 are alternately formed on the surface. It is formed into a screw shape.
この発熱抵抗体層13の表面に、フッソ樹脂又は、シリコ
ン樹脂をコーテングして附着防止層16を形成する。On the surface of the heating resistor layer 13, a fluorine resin or a silicone resin is coated to form an attachment prevention layer 16.
スリップリング15は、機械加工により真円に形成され、
その外周面の中央部には、集電子17と当接する凹部15a
が形成されている。The slip ring 15 is formed into a perfect circle by machining,
At the center of its outer peripheral surface, a recess 15a that abuts the current collector 17 is formed.
Are formed.
又、スリップリング15の両端部15b、15cの厚さＴは、附
着防止層16の厚さより厚く形成され、端部15bの端面15d
は、附着防止層16より突出している。Further, the thickness T of both ends 15b, 15c of the slip ring 15 is formed thicker than the thickness of the attachment preventing layer 16, and the end surface 15d of the end 15b is formed.
Protrude from the attachment preventing layer 16.
次にこの実施例の作動につき説明する。Next, the operation of this embodiment will be described.
集電子17からスリップリング15に給電すると、発熱抵抗
体層13が加熱され、熱定着ロールＨ上の紙Ｓに熱定着が
行われる。When electricity is supplied to the slip ring 15 from the current collector 17, the heating resistor layer 13 is heated, and the paper S on the heat fixing roll H is thermally fixed.
この時、紙Ｓがずれながら回転すると、紙Ｓは、矢印A2
0で示すようにスリップリング15側に移動しその端部S1
がスリップリング15の端面15dに衝突する。At this time, when the paper S is rotated while being displaced, the paper S is moved by the arrow A2.
As shown by 0, it moves to the slip ring 15 side and its end S1
Collides with the end surface 15d of the slip ring 15.
そして、該端面15dにより、その進行方向を規制されな
がら矢印A21方向に上昇する。この発明は、上記実施例
に限定されるものではなく、例えば、円筒状の絶縁性支
持体の表面に帯状の発熱抵抗体層と溝とを交互にねじ状
に形成する代わりに、該表面を発熱抵抗体層で覆っても
良い。The end surface 15d rises in the direction of arrow A21 while restricting the traveling direction thereof. The present invention is not limited to the above-mentioned embodiment, and for example, instead of alternately forming the strip-shaped heating resistor layers and the grooves on the surface of the cylindrical insulating support in a screw shape, It may be covered with a heating resistor layer.
この発明は、以上のようにスリップリングがその外周面
に凹部が形成され、かつ、その附着防止層側端部が該附
着防止層より肉厚なので、該凹部に集電子を当接させる
と、その当接面はスリップリングの端部表面より低い位
置となる。又、該集電子とスリップリングとの位置関係
は、前記凹部により所定の状態に維持される。附着防止
層上の紙がずれてスリップリング側に移動すると、該紙
は、前記端部によりその進行方向を規制される。この時
前記当接面がスリップリングの端部表面より低い位置に
あるので、外側方向又は水平方向に移動する前記紙は、
該当接面に入り込むことはできない。According to the present invention, as described above, the slip ring has the recess formed on the outer peripheral surface thereof, and the end portion of the sticking prevention layer is thicker than the sticking prevention layer. The contact surface is located lower than the end surface of the slip ring. Further, the positional relationship between the current collector and the slip ring is maintained in a predetermined state by the recess. When the paper on the attachment preventing layer shifts and moves to the slip ring side, the paper is restricted in its traveling direction by the end portion. At this time, since the contact surface is at a position lower than the end surface of the slip ring, the paper moving in the outer or horizontal direction is
It cannot enter the contact surface.
従って、スリップリングと集電子との間に紙が入ること
がないので、火災の発生を防止できる。又、スリップリ
ングが静嵌合されるので予め、スリップリングを機械加
工により真円に形成しておけば、真円度の良いスリップ
リングを得ることができる。Therefore, paper does not enter between the slip ring and the current collector, so that a fire can be prevented. Further, since the slip ring is statically fitted, if the slip ring is formed into a perfect circle in advance by machining, a slip ring having a good roundness can be obtained.
更に、スリップリングを付着防止層形成後に前記抵抗体
層に静嵌合せしめるため、溶射ににより附着防止層を形
成しても該附着防止層形成時における加熱を受けないの
で、酸化することがない。Further, since the slip ring is statically fitted to the resistor layer after the adhesion prevention layer is formed, even if the adhesion prevention layer is formed by thermal spraying, it is not heated during the formation of the adhesion prevention layer, so that it does not oxidize. .
従って、抵抗値が増大したりすることが無いので安定し
た給電を行うことができる。Therefore, the resistance value does not increase, and stable power supply can be performed.
第１図は、この発明の実施例を示す縦断面図第２図は、
従来例を示す平面図、第３図は、第２図のIII−III線拡
大断面図である。 12……絶縁層 13……発熱抵抗体層 15……スリップリング 15b……端部 16……附着防止層FIG. 1 is a vertical sectional view showing an embodiment of the present invention.
FIG. 3 is a plan view showing a conventional example, and FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 12 …… Insulating layer 13 …… Heating resistor layer 15 …… Slip ring 15b …… End part 16 …… Attachment prevention layer
フロントページの続き (56)参考文献 特開 昭61−134776（ＪＰ，Ａ) 特開 昭57−161768（ＪＰ，Ａ) 特開 昭55−164863（ＪＰ，Ａ) 特開 昭57−8571（ＪＰ，Ａ) 特開 昭62−18580（ＪＰ，Ａ) 特開 昭62−52581（ＪＰ，Ａ) 実開 昭61−34160（ＪＰ，Ｕ) 実開 昭58−3769（ＪＰ，Ｕ) 実開 昭55−45672（ＪＰ，Ｕ) 実開 昭60−128364（ＪＰ，Ｕ) 実開 昭61−88163（ＪＰ，Ｕ)Continuation of the front page (56) Reference JP 61-134776 (JP, A) JP 57-161768 (JP, A) JP 55-164863 (JP, A) JP 57-8571 (JP , A) JP 62-18580 (JP, A) JP 62-52581 (JP, A) Actually opened 61-34160 (JP, U) Actually opened 58-3769 (JP, U) Actually opened 55-45672 (JP, U) Actually opened 60-128364 (JP, U) Actually opened 61-88163 (JP, U)
Claims (2)
体層を形成し、該抵抗体層の端部にスリップリングを、
又、その余の部分に附着防止層を形成した複写機用熱定
着ロールにおいて、スリップリングがその外周面に集電
子と当接する凹部を環状に形成し、かつ、その附着防止
層側端部を該附着防止層より肉厚にし、又、該スリップ
リングを附着防止層形成後に、前記抵抗体層に静嵌合せ
しめたことを特徴とする複写機用熱定着ロール。1. A heating resistor layer is formed on the surface of a cylindrical insulating support, and a slip ring is formed at the end of the resistor layer.
Further, in a heat fixing roll for a copying machine in which a sticking prevention layer is formed in the remaining portion, a slip ring is formed in a ring-shaped concave portion on the outer peripheral surface thereof that abuts a current collector, and the sticking prevention layer side end portion is formed. A heat fixing roll for a copying machine, which is thicker than the attachment preventing layer, and the slip ring is statically fitted to the resistor layer after the attachment preventing layer is formed.
あることを特徴とする特許請求の範囲第１項記載の複写
機用熱定着ロール。2. The heat fixing roll for a copying machine according to claim 1, wherein the heat generating resistor layer has a spiral shape and a band shape.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61310093A JPH077232B2 (en) | 1986-12-29 | 1986-12-29 | Heat fixing roll for copier |
| EP87308128A EP0262833B1 (en) | 1986-09-22 | 1987-09-15 | Thermal fixing roller for use in a copying machine and method for manufacturing the same |
| US07/096,735 US4743940A (en) | 1986-09-22 | 1987-09-15 | Thermal fixing roller for use in a copying machine and method for manufacturing the same |
| DE8787308128T DE3782224T2 (en) | 1986-09-22 | 1987-09-15 | HEAT-FIXING ROLLER FOR USE IN A COPIER AND METHOD FOR THE PRODUCTION THEREOF. |
| CA000547370A CA1269697A (en) | 1986-09-22 | 1987-09-21 | Thermal fixing roller for use in a copying machine and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61310093A JPH077232B2 (en) | 1986-12-29 | 1986-12-29 | Heat fixing roll for copier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63167390A JPS63167390A (en) | 1988-07-11 |
| JPH077232B2 true JPH077232B2 (en) | 1995-01-30 |
Family
ID=18001096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61310093A Expired - Lifetime JPH077232B2 (en) | 1986-09-22 | 1986-12-29 | Heat fixing roll for copier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH077232B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100782801B1 (en) * | 2001-05-04 | 2007-12-06 | 삼성전자주식회사 | Fixing roller power supply of electrophotographic image forming apparatus |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55164863A (en) * | 1979-06-11 | 1980-12-22 | Toshiba Corp | Fixing device of electrophotographic copier |
| JPS578571A (en) * | 1980-06-18 | 1982-01-16 | Toshiba Corp | Heat fixing roller |
| JPS57161768A (en) * | 1981-03-28 | 1982-10-05 | Mita Ind Co Ltd | Heat fixing device |
| JPS6012864U (en) * | 1983-07-01 | 1985-01-28 | 日本電気株式会社 | floating magnetic head |
| JPS6134160U (en) * | 1984-07-31 | 1986-03-01 | 株式会社リコー | Heat fixing device |
| JPS61134776A (en) * | 1984-12-05 | 1986-06-21 | Hitachi Metals Ltd | Heat roll of copying machine |
-
1986
- 1986-12-29 JP JP61310093A patent/JPH077232B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63167390A (en) | 1988-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6340810B2 (en) | Device with induction heating roller including projecting portions at both ends and a central portion of a bobbin for maintaining a gap between an inner surface of the heating roller and a coil on the bobbin | |
| EP0262833A2 (en) | Thermal fixing roller for use in a copying machine and method for manufacturing the same | |
| US4144835A (en) | Contact heat fixing apparatus | |
| US5403995A (en) | Image fixing apparatus having image fixing roller with electrolytically colored metal core | |
| JPH077232B2 (en) | Heat fixing roll for copier | |
| EP0247564B1 (en) | Thermostat | |
| US6721518B2 (en) | Thermal fuser and image formation apparatus | |
| US6054677A (en) | Heating device and heating rotary member | |
| JPS59116775A (en) | Heat roller fixing device of electrostatic copying machine | |
| JPS61134271A (en) | Thermal head | |
| JPS5848679Y2 (en) | heat roll | |
| JPH0334669Y2 (en) | ||
| JPS6385676A (en) | Heat roll for electrophotography | |
| JP2822555B2 (en) | Induction heating cooker | |
| JPS5654474A (en) | Photoreceptor heater of electrophotographic copier | |
| JPH0722688Y2 (en) | Heat roller in fixing device | |
| JPS6348081Y2 (en) | ||
| JP2550554B2 (en) | Heating element roll for fixing | |
| JPS5848682Y2 (en) | Fusing roller | |
| JPS5848681Y2 (en) | Fusing roller | |
| JP3191672B2 (en) | Heating roller | |
| JPH0812524B2 (en) | Heat roller in fixing device | |
| JPS6363074A (en) | Heat roller for electrophotography | |
| JPS6027531B2 (en) | Heater immersion fryer | |
| JPS6218580A (en) | Directly heating type fixing device |