JPH0736097B2 - Fixing roller for copier - Google Patents
Fixing roller for copierInfo
- Publication number
- JPH0736097B2 JPH0736097B2 JP60071839A JP7183985A JPH0736097B2 JP H0736097 B2 JPH0736097 B2 JP H0736097B2 JP 60071839 A JP60071839 A JP 60071839A JP 7183985 A JP7183985 A JP 7183985A JP H0736097 B2 JPH0736097 B2 JP H0736097B2
- Authority
- JP
- Japan
- Prior art keywords
- fixing roller
- fluororesin
- roller
- film
- paper
- 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
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)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
【発明の詳細な説明】 （発明の技術分野） 本発明は、安定して鮮明な画質が得られ、定着ローラへ
の紙の巻き付けがない複写機用定着ローラに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing roller for a copying machine capable of obtaining stable and clear image quality without winding the paper around the fixing roller.
（発明の技術的背景及びその問題点） 従来、複写機においては、紙またはフィルムに現出され
た未定着のトナーの画像を、定着ローラによって加熱ま
た加圧処理して、紙またはフィルムに定着させるという
定着法が行なわれている。(Technical Background of the Invention and Problems Thereof) Conventionally, in a copying machine, an unfixed toner image developed on a paper or film is heated and pressed by a fixing roller to be fixed on the paper or film. The fixing method of letting it happen is practiced.
このうち定着ローラにトナーが粘着するのを防止するた
めに、従来耐熱性、非粘着性の優れたフッ素樹脂皮膜を
芯金直上あるいは弾性層を介して数μｍ〜数十μｍ形成
したものが広く用いられている。Among them, in order to prevent the toner from sticking to the fixing roller, it is widely used that a fluororesin film having excellent heat resistance and non-adhesiveness is conventionally formed on a core metal or several μm to several tens of μm through an elastic layer. It is used.
しかしながら、定着ローラには、紙フィルム、分離爪、
サーミスタ、クリーニングフェルト、ブレード、バック
アップローラなどが接触し摩擦するために、フッ素樹脂
皮膜が帯電し紙またはフィルムの移送、定着ローラから
の分離が連続的に安定して行なわれず、定着した紙また
はフィルムが定着ローラから分離されずに定着ローラに
巻き付く故障が発生し易いという欠点があった。However, the fixing roller has a paper film, a separating nail,
Since the thermistor, cleaning felt, blade, backup roller, etc. come into contact with and rub against each other, the fluororesin film becomes charged and the paper or film is not transferred and separated from the fixing roller continuously and stably. However, there is a drawback in that a failure of easily winding around the fixing roller without being separated from the fixing roller easily occurs.
また、定着後に定着ローラ表面の帯電量が大となり、し
かもローラ表面の帯電量分布が不均一であるため、複写
機内に飛散浮遊していたトナーが定着ローラ表面に電気
的に付着し、定着ローラ表面がトナーで汚される。した
がって、後続画像に汚れが発生し、不鮮明な画質となる
という難点があった。Further, since the amount of charge on the surface of the fixing roller becomes large after fixing and the distribution of the amount of charge on the roller surface is non-uniform, the toner scattered and floating in the copying machine is electrically attached to the surface of the fixing roller. The surface is stained with toner. Therefore, there is a problem in that the subsequent image is smeared and the image quality becomes unclear.
一般に前記難点を解消する方法としては、フッ素樹脂に
導電性物質を添加することが行われている。即ち、第１
に融点が900℃以上の銅、アルニミウル、鉄、ニッケ
ル、チタン、銀などの金属導電性物質を添加する方法、
第２にカーボンのような導電性無機物質を添加する方
法、第３にアルコール、アミン、界面活性剤、ジフェン
ルグアンジンなどの有機物質を添加する方法などであ
る。Generally, as a method for solving the above-mentioned problems, a conductive substance is added to a fluororesin. That is, the first
A method of adding a metal conductive material having a melting point of 900 ° C. or higher to copper, Alnimir, iron, nickel, titanium, silver, etc.
The second is a method of adding a conductive inorganic substance such as carbon, and the third is a method of adding an organic substance such as alcohol, amine, a surfactant, and diphenluguandin.
まず第１の方法をフッ素樹脂に適用すると相当量の金属
粉末が、フッ素樹脂と混合されて成膜される結果、フッ
素樹脂皮膜が脆くなりやすく、又、金属粉末が多量とな
れば、ローラの離型性が悪くなった。第２の方法ではカ
ーボンを大量に混入しなければならないので得られる定
着ローラが黒色となり定着ローラの汚れが目立ちにくく
なり、そして第３の方法はフッ素樹脂皮膜の焼成温度が
約340℃〜380℃であり、添加物質が熱分解してしまうと
いう前記第１〜第３の方法にはそれぞれ欠点がある。First, when the first method is applied to a fluororesin, a considerable amount of metal powder is mixed with the fluororesin to form a film, and as a result, the fluororesin film tends to become brittle. The releasability deteriorated. In the second method, a large amount of carbon must be mixed, so that the obtained fixing roller becomes black and stains on the fixing roller become inconspicuous, and in the third method, the baking temperature of the fluororesin film is about 340 ° C to 380 ° C. However, each of the first to third methods in which the additive substance is thermally decomposed has its drawbacks.
（発明の目的） 本発明は、このような従来の難点を排除するためになさ
れたもので、フッ素樹脂の焼成温度以下でかつローラの
使用温度以上の融点を有する金属粒子をフッ素樹脂に配
合することにより、フッ素樹脂自身の有する離型性を損
なうことなく、非帯電性による種々の特性を有する複写
機用定着ローラを提供しようとするものである。(Object of the Invention) The present invention has been made in order to eliminate such conventional drawbacks, and metal particles having a melting point not higher than the firing temperature of the fluororesin and not lower than the working temperature of the roller are blended with the fluororesin. By doing so, it is intended to provide a fixing roller for a copying machine having various characteristics due to non-charging property without impairing the releasing property of the fluororesin itself.
（発明の概要） 本発明の複写機用定着ローラは、芯金外周にフッ素樹脂
被覆膜を形成してなる複写機用定着ローラにおいて、前
記フッ素樹脂被覆膜はフッ素樹脂に、このフッ素樹脂の
焼成温度以下でかつローラ使用温度以上の融点を有する
金属粉を体積比で0.5〜40％配合したものを焼成してな
るものであることを特徴としている。(Summary of the Invention) A fixing roller for a copying machine according to the present invention is a fixing roller for a copying machine, wherein a fluororesin coating film is formed on an outer periphery of a core metal, wherein the fluororesin coating film is a fluororesin. It is characterized in that it is obtained by firing a mixture of metal powder having a melting point not higher than the firing temperature and not lower than the roller use temperature of 0.5 to 40% by volume.
使用する金属粉は、フッ素樹脂の焼成温度以下の融点を
有するので、ローラ製造の際のフッ素樹脂焼成時には、
金属粉も融解して、フッ素樹脂と一体化して成膜され
る。Since the metal powder used has a melting point equal to or lower than the firing temperature of the fluororesin, when firing the fluororesin during roller production,
The metal powder is also melted and integrated with the fluororesin to form a film.
このため、従来の高融点金属粉（例えば鉄粉）を混合し
た被膜のように、被膜がもろいという欠点を、ほぼ完全
に解消することができるものである。Therefore, it is possible to almost completely eliminate the disadvantage that the coating is brittle, such as the coating obtained by mixing the conventional high melting point metal powder (for example, iron powder).
さらに、融解した金属粉は、フッ素樹脂粒子のすきまを
埋めながら、芯金から被膜表面にまで達することが可能
であるから、少量の金属粉の添加で、ローラ表面の充分
な非帯電性を実現できる。Furthermore, the molten metal powder can reach the surface of the coating from the core metal while filling the gaps between the fluororesin particles, so adding a small amount of metal powder achieves sufficient antistatic properties on the roller surface. it can.
本発明に使用するフッ素樹脂としては、四フッ化エチレ
ン樹脂、パーフロロアルコキシ樹脂、四フッ化エチレン
−六フッ化プロピレン共重合体などが挙げられる。Examples of the fluororesin used in the present invention include tetrafluoroethylene resin, perfluoroalkoxy resin, and tetrafluoroethylene-hexafluoropropylene copolymer.
また、前記フッ素樹脂の焼成温度（一般には300〜380℃
×１時間程度）以下でかつローラの使用温度（170〜180
℃）以上の融点を有する金属粉としては鉛（融点327.5
℃）、ビスマス（融点271℃）、スズ（融点232.0℃）、
タリウム（303.5℃）およびカドミウム（融点321℃）な
どが使用できる。金属粉の形状としては粉状のもの及び
鱗片状のものが使用できる。Further, the baking temperature of the fluororesin (generally 300 to 380 ° C
× 1 hour or less) and the operating temperature of the roller (170-180
Lead (melting point 327.5)
℃), bismuth (melting point 271 ℃), tin (melting point 232.0 ℃),
Thallium (303.5 ℃) and cadmium (melting point 321 ℃) can be used. The metal powder may be in the form of powder or scale.
粒状のものは粒形0.1〜50μｍの範囲が好ましく、又鱗
片状の場合は厚さが１μｍ以下で巾および長さが0.1〜5
0μｍの大きさの範囲のものが、フッ素樹脂の粒径とほ
ぼ同等の大きさなので好ましい。The granular shape is preferably in the range of 0.1 to 50 μm, and the scale-like shape has a thickness of 1 μm or less and a width and length of 0.1 to 5 μm.
The size in the range of 0 μm is preferable because it is approximately the same as the particle size of the fluororesin.
尚、フッ素樹脂被膜層の下層にシリコーンゴム、フッ素
ゴム等の弾性ゴム層を設けることも可能である。An elastic rubber layer such as silicone rubber or fluororubber may be provided below the fluororesin coating layer.
（実施例） 以下、本発明を実施例および比較例によって説明する。(Examples) Hereinafter, the present invention will be described with reference to Examples and Comparative Examples.
実施例１ 直径30mmのアルミニウム合金製芯金の外周にポリテトラ
フルオロエチレン樹脂100重量部に対して平均粒径２μ
ｍの鉛20重量部（体積比で3.9％）を添加して得た塗料
を35μｍの膜厚で塗布し、360〜400℃で１時間焼成し、
表面粗さ0.4μmReの四フッ化エチレン樹脂膜を形成し定
着ローラを作成した。この定着ローラを用いてＡ−４サ
イズ普通紙に４万枚コピーを行なったが、紙の巻き付
き、画質乱れはなかった。Example 1 An average particle size of 2 μ was applied to the outer circumference of an aluminum alloy cored bar having a diameter of 30 mm with respect to 100 parts by weight of a polytetrafluoroethylene resin.
20 parts by weight of lead (3.9% by volume) was added to obtain a coating material having a film thickness of 35 μm, and baked at 360 to 400 ° C. for 1 hour.
A fixing roller was prepared by forming a tetrafluoroethylene resin film having a surface roughness of 0.4 μmRe. Using this fixing roller, 40,000 sheets of A-4 size plain paper were copied, but there was no paper wrapping or image quality disorder.
なお、分離爪数を従来の６個から１個に減少させた実験
も行なったが、紙の分離性は変化なく良好であった。An experiment was also conducted in which the number of separating claws was reduced from six to one, but the separability of paper was good without any change.
実施例２ 実施例１と同様の芯金外周に、平均粒径20μｍのパーフ
ロロアルコキシ樹脂100重量部に平均粒径２μｍのスズ
を25重量部（体積比で9.5％）を添加して得た塗料を32
μｍ厚さで静電粉体塗装により塗布し330〜350℃で１時
間焼成し、表面粗さ0.42μmReのパーフロロアルコキシ
樹脂膜を形成し、定着ローラを作成した。Example 2 Obtained by adding 25 parts by weight (9.5% by volume) of tin having an average particle size of 2 μm to 100 parts by weight of a perfluoroalkoxy resin having an average particle size of 20 μm on the outer periphery of a core metal similar to that of Example 1. 32 paint
It was applied by electrostatic powder coating in a thickness of μm and baked at 330 to 350 ° C. for 1 hour to form a perfluoroalkoxy resin film having a surface roughness of 0.42 μmRe, thereby preparing a fixing roller.
この定着ローラを用いて実施例１と同様の試験を行な
い、同様の良好な試験結果を得た。Using this fixing roller, the same test as in Example 1 was performed, and the same good test result was obtained.
比較例１ 実施例１と同様の芯金外周にポリテトラフルオロエチレ
ン樹脂塗料を35μｍ厚で塗装焼付けし、表面粗さ0.4μm
Reのポリテトラフルオロエチレン樹脂皮膜を有する定着
ローラを作成した。この定着ローラを用いて実施例１と
同様の試験を行ったところ、約150枚で１回の割合で紙
の巻き付けが発生し、画質汚れは1000枚頃より目立つよ
うになった。Comparative Example 1 Polytetrafluoroethylene resin paint was applied and baked on the outer periphery of the core metal in the same manner as in Example 1 to a thickness of 35 μm, and the surface roughness was 0.4 μm.
A fixing roller having a Re polytetrafluoroethylene resin film was prepared. When the same test as in Example 1 was performed using this fixing roller, paper winding occurred at a rate of about once for about 150 sheets, and the image quality stain became more noticeable after about 1000 sheets.
比較例２ 実施例１と同様の芯金外周にパーフロロアルコキシ樹脂
塗料を32μｍ厚で静電粉体塗装により塗布し、表面粗さ
0.45μmReのパーフロロアルコキシ樹脂膜を形成し、定
着ローラを作成した。Comparative Example 2 The surface roughness was the same as in Example 1 except that a perfluoroalkoxy resin paint was applied to the outer periphery of the core metal by electrostatic powder coating in a thickness of 32 μm.
A 0.45 μm Re perfluoroalkoxy resin film was formed to form a fixing roller.
この定着ローラを用いて実施例１と同様の試験を行った
ところ、約250枚で１回の割合で紙の巻き付きが発生
し、画質汚れは5000枚頃より著しくなった。When the same test as in Example 1 was conducted using this fixing roller, paper wrapping occurred once in about 250 sheets, and the image quality stain became remarkable from around 5000 sheets.
比較例３ 実施例１において、鉛の代わりに鉄粉20重量部（体積比
で5.6％）を用い、その他は実施例１と同様にしてロー
ラを製造し、試験を行った。Comparative Example 3 A roller was manufactured in the same manner as in Example 1 except that 20 parts by weight of iron powder (5.6% by volume) was used instead of lead in Example 1 and the test was conducted.
その結果、約200枚に１回の割合で紙の巻き付きが発生
し、画質汚れは約1000枚より生じた。As a result, paper wrapping occurred at a rate of once in about 200 sheets, and image quality stains occurred from about 1000 sheets.
この段階で、被膜表面を観察したところ、表面に微細な
荒れが見られた。At this stage, when the surface of the coating film was observed, fine roughness was observed on the surface.
（発明の効果） 以上の実施例からも明らかなように本発明の複写機用定
着ローラによればフッ素樹脂被膜層がフッ素樹脂にこの
フッ素樹脂の焼成温度以下でかつローラ使用温度以上の
融点を有する金属粉を添加してなるものであることによ
り、複写機に適用した場合、安定して鮮明な画質が得ら
れ、定着ローラへの紙の巻き付きがなく、多種多様の紙
の使用が可能であり、しかも紙の両面複写も容易に行な
うことができ、かつ分離爪も少数ですむので装置の容積
も小さくすることができる。(Effects of the Invention) As is clear from the above examples, according to the fixing roller for a copying machine of the present invention, the fluororesin coating layer has a melting point above the firing temperature of the fluororesin and above the roller operating temperature. When used in a copying machine, it is possible to obtain stable and clear image quality because it contains the metal powders that it has, and it is possible to use a wide variety of paper without wrapping the paper around the fixing roller. In addition, double-sided copying of paper can be easily performed, and since the number of separating claws is small, the volume of the apparatus can be reduced.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 今 修二 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (56)参考文献 特開 昭54−34839（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuji Ima 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa Showa Cable Denki Co., Ltd. (56) Reference JP-A-54-34839 (JP, A)
Claims (1)
る複写機用定着ローラにおいて、前記フッ素樹脂被覆膜
はフッ素樹脂に、このフッ素樹脂の焼成温度以下でかつ
ローラ使用温度以上の融点を有する金属粉を体積比で0.
5〜40％配合したものを焼成してなるものであることを
特徴とする複写機用定着ローラ。1. A fixing roller for a copying machine, wherein a fluororesin coating film is formed on the outer periphery of a core metal, wherein the fluororesin coating film is made of fluororesin, which is below the firing temperature of the fluororesin and above the roller operating temperature. The volume ratio of metal powder having a melting point of 0.
A fixing roller for a copying machine, which is obtained by firing a mixture of 5 to 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60071839A JPH0736097B2 (en) | 1985-04-04 | 1985-04-04 | Fixing roller for copier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60071839A JPH0736097B2 (en) | 1985-04-04 | 1985-04-04 | Fixing roller for copier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61230180A JPS61230180A (en) | 1986-10-14 |
| JPH0736097B2 true JPH0736097B2 (en) | 1995-04-19 |
Family
ID=13472108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60071839A Expired - Lifetime JPH0736097B2 (en) | 1985-04-04 | 1985-04-04 | Fixing roller for copier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0736097B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005040941A1 (en) * | 2003-10-24 | 2005-05-06 | Ricoh Company, Ltd. | Heating member, method of producing heating member surface layer, fixing member, heating device, fixing method, fixing device, and image forming device |
| JP2013164247A (en) * | 2012-02-13 | 2013-08-22 | Mitsubishi Heavy Ind Ltd | Anticorrosive coating layer, thermoconductive pipe having the anticorrosive coating layer, and heat exchanger having the thermoconductive pipe |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2876375B2 (en) * | 1993-02-22 | 1999-03-31 | 株式会社 金陽社 | roll |
| EP0752629B1 (en) * | 1995-07-05 | 2003-08-27 | Canon Kabushiki Kaisha | Fixing member and fixing apparatus including same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5434839A (en) * | 1977-08-24 | 1979-03-14 | Ricoh Co Ltd | Roller in fixing device |
-
1985
- 1985-04-04 JP JP60071839A patent/JPH0736097B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005040941A1 (en) * | 2003-10-24 | 2005-05-06 | Ricoh Company, Ltd. | Heating member, method of producing heating member surface layer, fixing member, heating device, fixing method, fixing device, and image forming device |
| JP2005302691A (en) * | 2003-10-24 | 2005-10-27 | Ricoh Co Ltd | Heating member, manufacturing method for heating member surface layer, fixing member, heating device, fixing method, fixing device and image forming device |
| JP2013164247A (en) * | 2012-02-13 | 2013-08-22 | Mitsubishi Heavy Ind Ltd | Anticorrosive coating layer, thermoconductive pipe having the anticorrosive coating layer, and heat exchanger having the thermoconductive pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61230180A (en) | 1986-10-14 |
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