JPH052147B2 - - Google Patents
Info
- Publication number
- JPH052147B2 JPH052147B2 JP60023667A JP2366785A JPH052147B2 JP H052147 B2 JPH052147 B2 JP H052147B2 JP 60023667 A JP60023667 A JP 60023667A JP 2366785 A JP2366785 A JP 2366785A JP H052147 B2 JPH052147 B2 JP H052147B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- thickness
- elastic layer
- elastic
- fixing device
- 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
- 239000010410 layer Substances 0.000 claims description 49
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000002344 surface layer Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 8
- 229920002379 silicone rubber Polymers 0.000 description 5
- 239000004945 silicone rubber Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
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
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電子写真複写機等に用いられる定着
装置に関し、特に、記録材の被定着トナー像付着
面に接する加熱ローラと加圧ローラとで記録材を
挾圧して送る定着装置に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a fixing device used in an electrophotographic copying machine, etc., and in particular, to a fixing device used in an electrophotographic copying machine, etc. This invention relates to a fixing device that clamps and presses a recording material.
従来、上述のような定着装置の加熱ローラに、
芯金上に弾性層とその上に四弗化エチレン樹脂か
ら成る表面層とを設けたもの（特開昭57−89785
号公報）や、芯金上に弾性層とその上に四弗化エ
チレン樹脂を含むフツ素ゴムから成る表面層とを
設けたもの（特開昭58−5770号、同58−27175号、
同58−90673号各公報）が用いられている。この
うち、前者のローラは、離型性が優れるが、表面
層と弾性層の弾性率の差が大きいため、厚紙のよ
うな記録材を連続して通すと、記録材の左右両端
が通過する位置の表面層に剪断力によるひゞ割れ
が生じ易いと言う問題がある。また、後者のロー
ラは、表面層も比較的大きな弾性を示して表面層
と弾性層の弾性率の差が少ないため、表面層に
ひゞ割れが生ずることはないが、表面層における
四弗化エチレン樹脂の層が非常に薄く、そのため
に耐久性が劣り、オフセツトが発生し易いと言う
問題がある。
Conventionally, the heating roller of the above-mentioned fixing device
An elastic layer on a core metal and a surface layer made of tetrafluoroethylene resin on the elastic layer (Japanese Patent Application Laid-Open No. 57-89785)
(Japanese Patent Application Laid-open Nos. 58-5770, 58-27175,
58-90673) are used. Of these, the former roller has excellent mold release properties, but because there is a large difference in the elastic modulus between the surface layer and the elastic layer, when recording material such as cardboard is passed continuously, both the left and right ends of the recording material pass through. There is a problem in that cracks are likely to occur in the surface layer due to shearing force. In addition, in the latter roller, the surface layer also exhibits relatively large elasticity and there is little difference in the elastic modulus between the surface layer and the elastic layer, so cracks do not occur in the surface layer, but tetrafluoride in the surface layer The problem is that the ethylene resin layer is very thin, resulting in poor durability and easy offset.
本発明は、上述の問題を解消するためになされ
たものであり、離型性、耐久性に優れる熱ローラ
型定着装置の提供を目的とする。
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a heat roller type fixing device that has excellent mold releasability and durability.
本発明は、記録材の被定着トナー像付着面に接
する加熱ローラと加圧ローラとで記録材を挟圧し
て送る定着装置において、前記両ローラが芯金上
に層厚が大でゴム硬度が小さい弾性体層とその上
に層厚が小でゴム硬度が大きい弾性体層とその上
に層厚が最も小で弗素樹脂から成る表面層とを有
し、且つ加熱ローラの前記２層の弾性体層のそれ
ぞれの層厚より加圧ローラの前記２層の弾性体層
のそれぞれの層厚の方がいずれも大であることを
特徴とする定着装置にあり、この構成によつて上
記目的を達成したものである。
The present invention provides a fixing device that presses and feeds a recording material between a heating roller and a pressure roller that are in contact with the surface of the recording material to which a fixed toner image is attached. The heating roller has a small elastic layer, an elastic layer having a small thickness and high rubber hardness thereon, and a surface layer having the smallest thickness and made of fluororesin, and the elasticity of the two layers of the heating roller is The fixing device is characterized in that the thickness of each of the two elastic layers of the pressure roller is greater than the thickness of each of the body layers, and this configuration achieves the above object. This has been achieved.
以下、本発明を図示例によつて説明する。 The present invention will be explained below using illustrated examples.
図は本発明定着装置の一例を示す要部断面図で
あり、１は記録材Ｐのトナー像付着面側に接触す
る加熱ローラ、２は記録材Ｐの裏面側に接触する
加圧ローラである。 The figure is a sectional view of essential parts showing an example of the fixing device of the present invention, in which 1 is a heating roller that contacts the toner image-attached side of the recording material P, and 2 is a pressure roller that comes into contact with the back side of the recording material P. .
加熱ローラ１は、内部にハロゲンヒータ３を保
持する芯金１ａ上に低硬度弾性層１ｂと、その上
に高硬度弾性層１ｃと、さらにその上にポリ四弗
化エチレンのような弗素樹脂から成る表面層１ｄ
を設けた構成からなり、加圧ローラ２も芯金２ａ
上に低硬度弾性層２ｂと、その上に高硬度弾性層
２ｃと、さらにその上にポリ四弗化エチレンのよ
うな弗素樹脂から成る表面層２ｄを設けた構成か
ら成る。なお、加熱ローラ１や加圧ローラ２の弾
性層にはシリコンゴムが好ましく用いられ、そし
て高硬度弾性層にはゴム硬度70°〜90°の範囲のも
のが、また低硬度弾性層にはゴム硬度25°〜40°の
範囲のものが好ましく用いられる。 The heating roller 1 has a low-hardness elastic layer 1b on a core metal 1a that holds a halogen heater 3 inside, a high-hardness elastic layer 1c on top of that, and a layer made of fluororesin such as polytetrafluoroethylene on top of the low-hardness elastic layer 1b. Surface layer 1d consisting of
The pressure roller 2 also has a core metal 2a.
It consists of a low hardness elastic layer 2b on top, a high hardness elastic layer 2c on top, and a surface layer 2d made of a fluororesin such as polytetrafluoroethylene on top of that. Note that silicone rubber is preferably used for the elastic layers of the heating roller 1 and the pressure roller 2, and a rubber hardness in the range of 70° to 90° is used for the high hardness elastic layer, and rubber is used for the low hardness elastic layer. Those having a hardness in the range of 25° to 40° are preferably used.
以上のような本発明の定着装置において、加熱
ローラ１と加圧ローラ２の表面層１ｄと２ｄの層
厚を共に20μとし、加熱ローラ１のそれぞれシリ
コンゴムから成る高硬度弾性層１ｃの層厚を
100μ、低硬度弾性層１ｂの層厚を200μ、加圧ロ
ーラ２の加熱ローラ１と同じシリコンゴムから成
る高硬度弾性層２ｃの層厚を１mm、低硬度弾性層
２ｂの層厚を４mmとして、この定着装置により記
録材Ｐのトナー像の定着を行つたところ、記録材
Ｐが薄い紙の場合は勿論のこと厚紙の場合も、加
熱ローラ１や加圧ローラ２が耐久性に優れてひび
割れやオフセツトの生ずることが無く、安定して
良好な定着がなされた。 In the fixing device of the present invention as described above, the layer thicknesses of the surface layers 1d and 2d of the heating roller 1 and the pressure roller 2 are both 20 μm, and the layer thickness of the high hardness elastic layer 1c made of silicone rubber of the heating roller 1 is set to 20 μm. of
100μ, the layer thickness of the low hardness elastic layer 1b is 200μ, the layer thickness of the high hardness elastic layer 2c made of the same silicone rubber as the heating roller 1 of the pressure roller 2 is 1 mm, and the layer thickness of the low hardness elastic layer 2b is 4 mm. When the toner image on the recording material P was fixed using this fixing device, it was found that the heating roller 1 and the pressure roller 2 had excellent durability and were free from cracks, not only when the recording material P was thin paper but also when it was thick paper. There was no offset and stable and good fixing was achieved.
本発明の定着装置は、加熱ローラと加圧ローラ
に芯金上に層厚が大でゴム硬度が小さい弾性体層
とその上に層厚が小でゴム硬度が大きい弾性体層
とその上に層厚が最も小で弗素樹脂から成る表面
層とを有し、且つ加熱ローラの前記２層の弾性体
層のそれぞれの層厚より加圧ローラの前記２層の
弾性体層のそれぞれの層厚の方がいずれも大であ
る。ローラを用いたことによつて、ローラの耐久
性が優れてひゞ割れやオフセツトの生ずることが
無くなり、安定して良好な定着を行うことができ
ると言う優れた効果を奏する。
The fixing device of the present invention has a heating roller and a pressure roller, an elastic layer having a large thickness and low rubber hardness on a core bar, an elastic layer having a small thickness and high rubber hardness on top of the elastic layer, and an elastic layer having a small thickness and high rubber hardness on top of the core metal. The layer thickness is the smallest and the surface layer is made of fluororesin, and the thickness of each of the two elastic layers of the pressure roller is greater than the thickness of each of the two elastic layers of the heating roller. Both are larger. By using a roller, the durability of the roller is excellent, and cracks and offsets do not occur, resulting in an excellent effect that stable and good fixing can be performed.
なお、前記実施例においては低硬度弾性層１
ｂ，２ｂおよび高硬度弾性層１ｃ，２ｃにいずれ
もシリコンゴムを用いたが、低硬度弾性層をシリ
コンゴムで形成し、高硬度弾性層を弗素ゴムで形
成してもよい。 In addition, in the above embodiment, the low hardness elastic layer 1
Although silicone rubber was used for both b and 2b and the high hardness elastic layers 1c and 2c, the low hardness elastic layer may be formed of silicone rubber and the high hardness elastic layer may be formed of fluororubber.
図は本発明定着装置の一例を示す要部断面図で
ある。
１……加熱ローラ、２……加圧ローラ、１ａ，
２ａ……芯金、１ｂ，２ｂ……低高度弾性層、１
ｃ，２ｃ……高硬度弾性層、１ｄ，２ｄ……表面
層、３……ハロゲンヒータ、Ｐ……記録材。
The figure is a sectional view of essential parts showing an example of the fixing device of the present invention. 1... Heating roller, 2... Pressure roller, 1a,
2a... core bar, 1b, 2b... low altitude elastic layer, 1
c, 2c... High hardness elastic layer, 1d, 2d... Surface layer, 3... Halogen heater, P... Recording material.
Claims (1)
ローラと加圧ローラとで記録材を挟圧して送る定
着装置において、前記両ローラが芯金上に層厚が
大でゴム硬度が小さい弾性体層とその上に層厚が
小でゴム硬度が大きい弾性体層とその上に層厚が
最も小で弗素樹脂から成る表面層とを有し、且つ
加熱ローラの前記２層の弾性体層のそれぞれの層
厚より加圧ローラの前記２層の弾性体層のそれぞ
れの層厚の方がいずれも大であることを特徴とす
る定着装置。1. In a fixing device that presses and feeds a recording material between a heating roller and a pressure roller that are in contact with the surface of the recording material to which the fixed toner image is attached, both rollers are made of an elastic body with a large layer thickness and low rubber hardness on a core bar. layer, an elastic layer having a small layer thickness and high rubber hardness thereon, and a surface layer having the smallest layer thickness and made of a fluororesin thereon, and of the two elastic layers of the heating roller. A fixing device characterized in that the thickness of each of the two elastic layers of the pressure roller is greater than the thickness of each layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2366785A JPS61184575A (en) | 1985-02-12 | 1985-02-12 | Fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2366785A JPS61184575A (en) | 1985-02-12 | 1985-02-12 | Fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61184575A JPS61184575A (en) | 1986-08-18 |
| JPH052147B2 true JPH052147B2 (en) | 1993-01-11 |
Family
ID=12116842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2366785A Granted JPS61184575A (en) | 1985-02-12 | 1985-02-12 | Fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61184575A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62140554U (en) * | 1986-02-26 | 1987-09-04 | ||
| EP0320533B1 (en) * | 1986-12-16 | 1990-09-26 | Toray Silicone Company, Ltd. | Roll covered with silicone material and method for producing same |
| JPH0719105B2 (en) * | 1989-05-31 | 1995-03-06 | キヤノン株式会社 | Fixing roll and fixing device |
| EP0424053B1 (en) * | 1989-10-16 | 1995-12-27 | Canon Kabushiki Kaisha | Mold releasing elastic roller |
| JP3758420B2 (en) * | 1999-06-14 | 2006-03-22 | 富士ゼロックス株式会社 | Fixing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5879272A (en) * | 1981-10-22 | 1983-05-13 | イ−ストマン コダック カンパニ− | Multilayer deposition material and manufacture thereof |
| JPS6183567A (en) * | 1984-10-01 | 1986-04-28 | Canon Inc | Fixing roller and heat fixing device having fixing roller |
-
1985
- 1985-02-12 JP JP2366785A patent/JPS61184575A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5879272A (en) * | 1981-10-22 | 1983-05-13 | イ−ストマン コダック カンパニ− | Multilayer deposition material and manufacture thereof |
| JPS6183567A (en) * | 1984-10-01 | 1986-04-28 | Canon Inc | Fixing roller and heat fixing device having fixing roller |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61184575A (en) | 1986-08-18 |
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