JPS63109481A - Manufacture of heat fixing roller - Google Patents
Manufacture of heat fixing rollerInfo
- Publication number
- JPS63109481A JPS63109481A JP25539086A JP25539086A JPS63109481A JP S63109481 A JPS63109481 A JP S63109481A JP 25539086 A JP25539086 A JP 25539086A JP 25539086 A JP25539086 A JP 25539086A JP S63109481 A JPS63109481 A JP S63109481A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- heat fixing
- silicone rubber
- rubber layer
- baking
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 21
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 21
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 20
- 239000004945 silicone rubber Substances 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 230000006866 deterioration Effects 0.000 claims abstract description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 101000606535 Homo sapiens Receptor-type tyrosine-protein phosphatase epsilon Proteins 0.000 description 1
- 102100039665 Receptor-type tyrosine-protein phosphatase epsilon Human genes 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005507 spraying Methods 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
本発明は、電子複写機等の熱定着部に使用される熱定着
ローラの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention (Industrial Application Field) The present invention relates to a method of manufacturing a heat fixing roller used in a heat fixing section of an electronic copying machine or the like.
（従来の技術）
従来から、電子複写機等の熱定着部に使用される熱定着
ローラとして、シリコーンゴム材料をアルミ等からなる
金属芯軸上にプライマーを介して被覆したものが一般に
用いられている。そしてこのようなローラのトナーとの
屋型性を高めるために、シリコーンゴム層の表面にポリ
テトラフルオロエチレン樹脂（以下ＰＴＦＥと称する。(Prior Art) Conventionally, heat fixing rollers used in heat fixing parts of electronic copying machines and the like have generally been made by coating silicone rubber material on a metal core shaft made of aluminum or the like with a primer. There is. In order to improve the shapeability of such a roller with toner, polytetrafluoroethylene resin (hereinafter referred to as PTFE) is applied to the surface of the silicone rubber layer.
）ディスパージョンを塗布、焼付けてＰ Ｔ Ｆ Ｅ
７Ｎを設けることが行われている。) Apply dispersion and bake P T F E
7N is being provided.
（発明が解決しようとする問題点）
しかしながら、一般にＰＴＦＥ塗膜の焼付けは高温で行
われるため、焼成工程中に基層であるシリコーンゴム層
が高温にさらされ劣化するという問題があった。(Problems to be Solved by the Invention) However, since PTFE coatings are generally baked at high temperatures, there is a problem in that the silicone rubber layer, which is the base layer, is exposed to high temperatures during the baking process and deteriorates.
すなわちＰＴＦＥ塗膜は通常３８０℃前後で数十分間で
焼成されているが、このような加熱条件ではシリコーン
ゴム層の熱劣化は避けることができなかった。That is, although a PTFE coating film is usually fired at around 380° C. for several tens of minutes, thermal deterioration of the silicone rubber layer could not be avoided under such heating conditions.
そこで本発明はこのような従来の問題を解決するために
なされたもので、シリコーンゴム層を熱劣化させること
なくＰＴＦＥ塗膜を焼成させて特性のよい熱定着ローラ
を製造することができる方法を提供することを目的とす
る。Therefore, the present invention was made to solve these conventional problems, and provides a method for manufacturing a heat fixing roller with good characteristics by baking a PTFE coating without thermally deteriorating the silicone rubber layer. The purpose is to provide.
［発明の構成］
（問題点を解決するための手段）
本発明は、ローラ芯軸上にシリコーンゴム層を形成し、
このシリコーンゴム層上にポリテトラフルオロエチレン
樹脂ディスパージョンを塗布し乾燥させてポリテトラフ
ルオロエチレン樹脂塗膜を形成した後、このポリテトラ
フルオロエチレン樹脂塗膜を焼成させる熱定着ローラの
製造方法において、前記ポリテトラフルオロエチレン樹
脂塗膜の焼成に先立って、シリコーンローラが実質的に
熱劣化を起こさない２５０℃以上の温度範囲で予備加熱
を施し、しかる後焼成を行うことを特徴としている。[Structure of the invention] (Means for solving the problems) The present invention forms a silicone rubber layer on the roller core shaft,
In a method for manufacturing a heat fixing roller, a polytetrafluoroethylene resin dispersion is coated on the silicone rubber layer and dried to form a polytetrafluoroethylene resin coating film, and then the polytetrafluoroethylene resin coating film is fired. Prior to firing the polytetrafluoroethylene resin coating, the silicone roller is preheated at a temperature of 250° C. or higher at which substantially no thermal deterioration occurs, and then fired.
本発明において使用するＰＴＦＥディスパージョンとし
ては、たとえばＡＤ−６３９（旭硝子社商品名）等があ
る。このＰＴＦＥディスパージョンの塗布には、吹付法
、浸漬決算公知の方法を用いることができる。Examples of the PTFE dispersion used in the present invention include AD-639 (trade name of Asahi Glass Co., Ltd.). The PTFE dispersion can be applied by a spraying method or a known method of dipping.
本発明における予備加熱の好適温度範囲は２５０〜３２
０℃であり、より好ましくは２７０〜３１０℃である。The preferred temperature range for preheating in the present invention is 250 to 32
The temperature is 0°C, more preferably 270 to 310°C.
これは２５０℃以下では予備加熱の効果が得られず、逆
に３２０℃をこえるとシリコーンゴム層の表面近傍が熱
劣化するおそれがあるからである。This is because if the temperature is below 250°C, the effect of preheating cannot be obtained, and if the temperature exceeds 320°C, there is a risk of thermal deterioration near the surface of the silicone rubber layer.
この予備加熱はローラを上記温度範囲の加熱雰囲気中に
保持するだけでも行うことができるが、これと併せロー
ラ芯軸内に、たとえば赤外線ヒータ等の加熱手段を内挿
させてローラ内外がら加熱する方法を採ることが好まし
い、これによって予備加熱時間が大幅に短縮され、より
大きな効果をあげることができる。ちなみに加熱手段を
内挿した場合としない場合の予備加熱に要する時間は、
たとえばローラ温度を２７０℃に上昇させる場合を例に
あげると、加熱手段を内挿させた場合３分間ですむのに
対し、内挿させない場合には４０分間程度を要する。This preheating can be performed by simply holding the roller in a heating atmosphere within the above temperature range, but in addition to this, heating means such as an infrared heater may be inserted into the roller core shaft to heat the roller from the inside and outside. It is preferable to adopt this method, which can significantly shorten the preheating time and achieve greater effects. By the way, the time required for preheating with and without heating means is
For example, when raising the roller temperature to 270° C., it only takes 3 minutes when the heating means is inserted, whereas it takes about 40 minutes when the heating means is not inserted.
（作用）
本発明においては、焼成前に予備加熱を行ってローラ全
体の温度を高めておき、しかる後ＰＴＦＥ塗膜の焼成を
行うので、焼成時間が大幅に冠縮される。この結果シリ
コーンゴム層が長時間高温にさらされることがなくなり
シリコーンゴム層の熱劣化が防止される。(Function) In the present invention, the temperature of the entire roller is raised by preheating before firing, and then the PTFE coating is fired, so the firing time is significantly shortened. As a result, the silicone rubber layer is not exposed to high temperatures for a long period of time, and thermal deterioration of the silicone rubber layer is prevented.
（実施例） 以下、本発明の実施例について記載する。(Example) Examples of the present invention will be described below.
まず金属芯軸上にブライマーを介して常法によりシリコ
ーンゴム層が形成されたシリコーンゴムローラ（外径６
０ｍｍ、肉厚１２ｍｍ、ローラ長３２０ｍｍ）の表面に
、ＰＴＦＥディスパージョンとしてＡＤ−６３９を浸漬
法により塗布した後、この塗布面を乾燥さぜＰ Ｔ Ｆ
Ｅディスパージョン中の分散剤等を除去してＰ Ｔ
Ｆ Ｅ塗膜を形成した。First, a silicone rubber roller (outer diameter: 6
After applying AD-639 as a PTFE dispersion to the surface of a 320 mm (0 mm, wall thickness: 12 mm, roller length: 320 mm) by dipping, the coated surface was dried.
E Remove the dispersant etc. in the dispersion and P
FE coating film was formed.
次いで、このローラを加熱室内に収容するとともにその
ローラ芯軸内に赤外線ヒータを内挿させて通電し、３０
０℃で３分間の予備加熱を施した。Next, this roller was housed in a heating chamber, and an infrared heater was inserted into the roller core shaft and energized for 30 minutes.
Preheating was performed at 0° C. for 3 minutes.
この後ローラの表面へ温度６００℃の熱風を１分３０秒
間吹付けることによりＰＴＰＥ塗膜の焼成を行った。Thereafter, the PTPE coating film was fired by blowing hot air at a temperature of 600° C. for 1 minute and 30 seconds onto the surface of the roller.
このようにして得られたＰＴＦＥ被覆シリコーン、ゴム
ローラと、予備加熱を行わず温度６００℃で、５分間の
条件で焼成を行ったローラ（比較例）のシリコーンゴム
の劣化をキシレン抽出残率で比較した結果を次表に示す
、また未焼成のシリコーンゴムのキシレン抽出残率も併
せ示す。Comparison of the deterioration of the silicone rubber of the PTFE-coated silicone rubber roller thus obtained and the roller baked at 600°C for 5 minutes without preheating (comparative example) based on the xylene extraction residual rate. The results are shown in the table below, and the xylene extraction residual rate of unfired silicone rubber is also shown.
（以下余白）
表からも明らかなように、本発明の方法によれば、焼成
によるシリコーンゴム層の劣化のない熱定着ローラを得
ることができる。(The following is a blank space) As is clear from the table, according to the method of the present invention, a heat fixing roller without deterioration of the silicone rubber layer due to baking can be obtained.
なお本発明は、熱容量の大きい芯軸肉厚の厚いローラや
外形の大きなローラに適用した場合に、その効果が特に
顕著である。Note that the present invention is particularly effective when applied to a roller with a large core shaft thickness and a large outer diameter, which has a large heat capacity.
［発明の効果コ
以上説明したように本発明の熱定着ローラの製造方法に
よれば、ＰＴＦＥの焼成時間を大幅に短縮することがで
きるので、シリコーンゴム層を劣化させることなく高性
能、高品質の熱定着ローラを得ることができる。[Effects of the Invention] As explained above, according to the method for manufacturing a heat fixing roller of the present invention, the baking time of PTFE can be significantly shortened, so high performance and high quality can be achieved without deteriorating the silicone rubber layer. It is possible to obtain a heat fixing roller of.
出願人 昭和電ｍ電纜株式会社代理人 弁理
士 須 山 佐 −
（ほか１名）Applicant: Showa Denshin Co., Ltd. Agent: Patent attorney: Sasa Suyama - (1 other person)
Claims (3)
シリコーンゴム層上にポリテトラフルオロエチレン樹脂
ディスパージョンを塗布し乾燥させてポリテトラフルオ
ロエチレン樹脂塗膜を形成した後、このポリテトラフル
オロエチレン樹脂塗膜を焼成させる熱定着ローラの製造
方法において、前記ポリテトラフルオロエチレン樹脂塗
膜の焼成に先立つて、シリコーンローラが実質的に熱劣
化を起こさない２５０℃以上の温度範囲で予備加熱を施
し、しかる後焼成を行うことを特徴とする熱定着ローラ
の製造方法。(1) Form a silicone rubber layer on the roller core shaft, apply a polytetrafluoroethylene resin dispersion on this silicone rubber layer and dry it to form a polytetrafluoroethylene resin coating, and then In a method for manufacturing a heat fixing roller in which an ethylene resin coating film is baked, prior to baking the polytetrafluoroethylene resin coating film, the silicone roller is preheated at a temperature range of 250° C. or higher at which substantially no thermal deterioration occurs. 1. A method for manufacturing a heat fixing roller, which comprises applying and then baking.
の範囲第１項記載の熱定着ローラの製造方法。(2) The method for manufacturing a heat fixing roller according to claim 1, wherein the preheating temperature is 250 to 320°C.
ーラ芯軸内に加熱手段を内挿することにより行われる特
許請求の範囲第１項または第２項記載の熱定着ローラの
製造方法。(3) The method for manufacturing a heat fixing roller according to claim 1 or 2, wherein the preheating is performed by holding the roller in a heating atmosphere and inserting a heating means into the roller core shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61255390A JP2685437B2 (en) | 1986-10-27 | 1986-10-27 | Manufacturing method of heat fixing roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61255390A JP2685437B2 (en) | 1986-10-27 | 1986-10-27 | Manufacturing method of heat fixing roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63109481A true JPS63109481A (en) | 1988-05-14 |
| JP2685437B2 JP2685437B2 (en) | 1997-12-03 |
Family
ID=17278095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61255390A Expired - Lifetime JP2685437B2 (en) | 1986-10-27 | 1986-10-27 | Manufacturing method of heat fixing roller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2685437B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6168751B1 (en) | 1997-10-28 | 2001-01-02 | Ames Rubber Corporation | Method of making multilayer rolls having a thin fluoropolymer top coat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5789785A (en) * | 1980-11-25 | 1982-06-04 | Sumitomo Electric Ind Ltd | Fixing roller |
| JPS60205561A (en) * | 1984-03-30 | 1985-10-17 | Canon Inc | Fixing roller and fixing device having it |
| JPS61124974A (en) * | 1984-11-21 | 1986-06-12 | Minolta Camera Co Ltd | Manufacture of heat fixing roller |
-
1986
- 1986-10-27 JP JP61255390A patent/JP2685437B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5789785A (en) * | 1980-11-25 | 1982-06-04 | Sumitomo Electric Ind Ltd | Fixing roller |
| JPS60205561A (en) * | 1984-03-30 | 1985-10-17 | Canon Inc | Fixing roller and fixing device having it |
| JPS61124974A (en) * | 1984-11-21 | 1986-06-12 | Minolta Camera Co Ltd | Manufacture of heat fixing roller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6168751B1 (en) | 1997-10-28 | 2001-01-02 | Ames Rubber Corporation | Method of making multilayer rolls having a thin fluoropolymer top coat |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2685437B2 (en) | 1997-12-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |