JPH0338678A - Fixing belt and production thereof - Google Patents
Fixing belt and production thereofInfo
- Publication number
- JPH0338678A JPH0338678A JP17202989A JP17202989A JPH0338678A JP H0338678 A JPH0338678 A JP H0338678A JP 17202989 A JP17202989 A JP 17202989A JP 17202989 A JP17202989 A JP 17202989A JP H0338678 A JPH0338678 A JP H0338678A
- Authority
- JP
- Japan
- Prior art keywords
- silicone rubber
- fixing belt
- layer
- belt
- injected
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 40
- 239000010410 layer Substances 0.000 claims abstract description 33
- 239000004945 silicone rubber Substances 0.000 claims abstract description 30
- 229920002635 polyurethane Polymers 0.000 claims abstract description 20
- 239000004814 polyurethane Substances 0.000 claims abstract description 20
- 238000000465 moulding Methods 0.000 claims abstract description 14
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims abstract description 10
- 239000012790 adhesive layer Substances 0.000 claims abstract description 10
- 238000004073 vulcanization Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 2
- 229920001971 elastomer Polymers 0.000 abstract 2
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 5
- 229920002545 silicone oil Polymers 0.000 description 5
- 229920006311 Urethane elastomer Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000012948 isocyanate Chemical group 0.000 description 4
- 150000002513 isocyanates Chemical group 0.000 description 4
- 229920005862 polyol Polymers 0.000 description 4
- 150000003077 polyols Chemical class 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 229920003226 polyurethane urea Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 241000448280 Elates Species 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920000909 polytetrahydrofuran Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OMRDSWJXRLDPBB-UHFFFAOYSA-N N=C=O.N=C=O.C1CCCCC1 Chemical compound N=C=O.N=C=O.C1CCCCC1 OMRDSWJXRLDPBB-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
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、ファクシＺ’）、プリンタ
ー等に用いられ被転写物に転写された画像を定着すると
ともに該被転写物を搬送する定着ベルト又はスリーブ（
以下、単にベルトという）及びその製造方法に関する。Detailed Description of the Invention <Industrial Application Field> The present invention is used in an electrophotographic copying machine, a facsimile Z'), a printer, etc., to fix an image transferred to a transferred object and to fix the transferred object. The fusing belt or sleeve (
(hereinafter simply referred to as a belt) and a manufacturing method thereof.
〈従来の技術〉
電子写真複写機、ファクシミリ、プリンづ−等において
は、例えば第３図に示すよう（喝複写機１００の感光体
１０１上に静電画像１形成し、との静ｆ１画像を画像形
成部１０２１ｉよってトナー像として現像するとともに
咳１ナー像を転写部１０３によって紙等の被板１物１０
４に転写した後、この被転写物１〇−上の転写像を定着
部１０５によって定着す？ことにより被転写物を得てい
る。<Prior Art> In electrophotographic copying machines, facsimiles, printers, etc., for example, as shown in FIG. The image forming section 1021i develops the toner image, and the transfer section 103 transfers the toner image to the substrate 10 such as paper.
4, the transferred image on the transferred object 10- is fixed by the fixing unit 105. By doing this, the transferred material is obtained.
この従来の定着部１０５においては、第４図に示すよう
に、従来より一対のヒートロール１０６とシリコーンゴ
ム製の加圧ロール１０７とからなり、被転写物１０４を
挾みｉんで定着するロール定着が採用されている。As shown in FIG. 4, this conventional fixing unit 105 is conventionally comprised of a pair of heat rolls 106 and a pressure roll 107 made of silicone rubber, and roll fixing unit 104 that sandwiches and fixes the transferred material 104. has been adopted.
しかしながら、このロール定着は加圧ロール１０７の押
圧力が強いため例えば細い線ｉどがつぶれてしまい画像
が鮮明でなくなる２いう問題があるため、近年、第５図
に示す一つナヒートロール１０８とこのヒートローフ１
１θ８の一部を覆うように当接する定着ベノ１ト１０９
とからなるベルト定着が採用されている。However, this roll fixing has the problem that the pressing force of the pressure roll 107 is so strong that, for example, thin lines are crushed and the image becomes unclear. This heat loaf 1
A fixing bevel 109 contacts so as to cover a part of 1θ8
A belt fixation consisting of
このベルト定着は、接触面積が大きくとれるため定着ベ
ルト１０９の押付は圧力が弱くて良く、精密な複写、あ
るいは特に大版、例えばＡＯの用紙の複写に好適である
。This belt fixing allows for a large contact area, so the pressing force of the fixing belt 109 may be low, and is suitable for precise copying or especially for copying large size sheets, such as AO paper.
このベルト定着に用いる定着ベルト１０９（ま、一般に
、ミラブルシリコーンゴム（ＨＴＶ）を原料として、押
出し成形、又はシート巻き成形等によって成形した後、
研磨したものである。The fixing belt 109 used for this belt fixing (generally, after being molded from millable silicone rubber (HTV) as a raw material by extrusion molding, sheet winding molding, etc.
It is polished.
〈発明が解決しようとするｉｔ題〉
前述した定着ベルト１０９は、トナーに対する剥離性を
向上させるために、その表面にシリコーンオイルを供給
しながら用いられるが、定着ベルト１０９がシリコーン
オイルを吸収して膨潤してしまい、寿命が短くなるとい
う問題がある。<Problem to be Solved by the Invention> The fixing belt 109 described above is used while supplying silicone oil to its surface in order to improve the releasability of toner. There is a problem that it swells and its lifespan is shortened.
また、剥離性を向上させるために、定着ベルト１０９の
表面にフッ素樹脂をコートするととも考えられるが、高
価になるという問題がある。Furthermore, in order to improve the releasability, it may be possible to coat the surface of the fixing belt 109 with a fluororesin, but this has the problem of being expensive.
さらに、定着ベルト１０９を形成するシリコーンゴムは
弾性体であるため長期使用により伸びてしまい、走行が
不安定になるという問題もある。Furthermore, since the silicone rubber that forms the fixing belt 109 is an elastic material, it stretches with long-term use, resulting in unstable running.
本発明はこのような事情に鑑み、安価且つ長寿命であり
、安定した走行性を有する定着ベルト及びその製造方法
を提供することを目的とする。In view of these circumstances, it is an object of the present invention to provide a fixing belt that is inexpensive, has a long life, and has stable running properties, and a method for manufacturing the same.
＜ａｍを解決するための手段〉
前記目的を達成するための本発明にかかる定着ベルトの
構成は、被転写物に転写された静電画像を定着する定着
ベルトにおいて、酷熱性ポリウレタンからなるベルト本
体と、このベルト本体の表面に設けたシリコーンゴム層
とが一体に成形されてなることを特徴とする。<Means for solving am> The structure of the fixing belt according to the present invention for achieving the above-mentioned object is that the fixing belt fixes the electrostatic image transferred to the transfer object, and includes a belt main body made of heat-resistant polyurethane. and a silicone rubber layer provided on the surface of the belt body are integrally molded.
また、本発明にかかる第１の定着ベルトの製造方法の構
成は、耐熱性ポリウレタンからなるベルト本体の表面に
、シリコーンゴム層をコーティングしてなることを特徴
とし、第２の定着ベルトの製造方法の構成は、耐熱性ポ
リウレタンを、円筒型に注入して遠心成形する定着ベル
トの製造方法にわいて、液状シリコーンゴムを注入して
半硬化状態に遠心成形し、この半硬化状のシリコーンゴ
ム層の表面に接着層を形成し、耐熱性ポリウレタンを注
入して遠心成形し、その後本加硫することを特徴とし、
第３の定着ベルトの製造方法の構成は、耐熱性ポリウレ
タンを、円筒型に注入して遠心成形する定着ベルトの製
造方法において、耐熱性ポリウレタンエラストマーを注
入して半硬化状態に遠心成形し、この半硬化状の耐熱性
ポ、リウレタン層の表面に接着層を形成し、液状シリコ
ーンゴムを注入してに遠心成形し、その後本加硫するこ
とを特徴とする。Further, the first method for manufacturing a fixing belt according to the present invention is characterized in that the surface of the belt body made of heat-resistant polyurethane is coated with a silicone rubber layer. The structure of the fuser belt is to inject heat-resistant polyurethane into a cylindrical shape and then centrifugally mold it. Liquid silicone rubber is injected and centrifugally molded to a semi-hardened state, and this semi-hardened silicone rubber layer is It is characterized by forming an adhesive layer on the surface, injecting heat-resistant polyurethane, centrifugally molding, and then main vulcanizing.
The third method for manufacturing a fixing belt has a structure in which heat-resistant polyurethane is injected into a cylindrical shape and centrifugally molded. It is characterized in that an adhesive layer is formed on the surface of a semi-cured heat-resistant polyurethane layer, liquid silicone rubber is injected, centrifugal molding is performed, and then main vulcanization is performed.
ここで、耐熱性ポリウレタンとしては、ポリウレタンウ
レア（末端アミノ基を有するポリオールとイソシアネー
トとからなるもの；例えばイハラケミカル工業■製Ｒ−
１１０）、ポリオールとしてポリテトラメチレンエーテ
ルグリコール（ＰＴＭＥＧ）を用いたウレタン（例えば
、Ａ Ｋ Ｚ Ｏ社製ＥＬＡＴＥ １０３など：登録商
標）、イソシアネートとしてシクロヘキサンジイソシア
ネート（ＣＨＤＩＩを用いたウレタン（例えば、ＡＫＺ
Ｏ社製ＥＬＡＴＥ １０８など：￥ｌ録商標）などを挙
げろことができる。Here, as the heat-resistant polyurethane, polyurethane urea (composed of a polyol having a terminal amino group and isocyanate; for example, R-
110), urethane using polytetramethylene ether glycol (PTMEG) as a polyol (for example, ELATE 103 manufactured by AKZO Co., Ltd.: registered trademark), urethane using cyclohexane diisocyanate (CHDII) as an isocyanate (for example, AKZ
Examples include ELATE 108 manufactured by Company O (trademark).
さらに、ベルトの表面にコーティングされているシリコ
ーンゴムはベルト自体を構成するものではないので、ト
ナーに対する剥離性の良好なものを積極的に使用でき、
従来のベルトより剥離性が向上する。Furthermore, since the silicone rubber coated on the surface of the belt does not constitute the belt itself, it is possible to actively use a material that has good releasability to toner.
Improves peelability compared to conventional belts.
本発明の定着ベルトは、第１図に示すように、好適には
、耐熱性ポリウレタンを原料としてベルト本体１を形成
し、このベルト本体１の表面に液体シリコーンゴムから
なるシリコーンゴムＩ！ｌ１２を形成することにより製
造される。As shown in FIG. 1, in the fixing belt of the present invention, the belt body 1 is preferably formed from heat-resistant polyurethane as a raw material, and the surface of the belt body 1 is coated with silicone rubber I! made of liquid silicone rubber. It is manufactured by forming l12.
上記ベルト本体１の製造方法としては、例えば遠心成形
法等を挙げることができる。Examples of the method for manufacturing the belt body 1 include centrifugal molding.
ここで、遠心成形法とは原料＃７Ｍ脂を揮発性溶剤に溶
解した溶液を円筒型に注入して、該円筒型を例えば１１
０〜１３０℃に加熱しながら回転させて半加硫し、脱型
した後本加硫を施す方法をいう。Here, the centrifugal molding method refers to a solution in which raw material #7M fat is dissolved in a volatile solvent and is injected into a cylindrical mold.
This is a method in which semi-vulcanization is performed by rotating while heating at 0 to 130°C, and after demolding, main vulcanization is performed.
この際、特に薄肉のシームレスベルトを高精度に均一な
肉厚となるように製造するには、特公昭６０−１５４５
４号公報に示されるような方法、すなわち、まず円筒型
内に液状硬化型シリコーンゴムを注入して硬化させて型
面を形成し、該型面を用いて上述したように遠心成形す
ればよい。At this time, in order to manufacture particularly thin-walled seamless belts with high precision and uniform thickness, it is necessary to
A method as shown in Publication No. 4, that is, first, liquid curing silicone rubber is injected into a cylindrical mold and cured to form a mold surface, and centrifugal molding is performed using the mold surface as described above. .
また、ベルト本体に表面に設けられるシリコーンゴム層
は、液状シリコーンゴムを例えばスプレーコート法等、
通常用いられるコート法によりコーティングすることに
より形成すればよい。このシリコーンゴム層は５０〜１
００μｍ程度に形成すればよく、好適な材料としてはト
ナーとの離型性の優れている低硬度の付加タイプ液状シ
リコーンゴム（信越化学工業社製ＫＥ−１３００．硬度
Ｈｓ：３０）が例示できろ。In addition, the silicone rubber layer provided on the surface of the belt body is coated with liquid silicone rubber by, for example, spray coating.
It may be formed by coating using a commonly used coating method. This silicone rubber layer is 50-1
A suitable material is a low-hardness addition-type liquid silicone rubber (KE-1300 manufactured by Shin-Etsu Chemical Co., Ltd., hardness Hs: 30), which has excellent releasability from toner. .
上記シリコーンゴム層２の膜厚を、スプレーコート法を
用いないで更に均一とするための定着ベルトの製造方法
を次に説明する。Next, a method for manufacturing a fixing belt for making the thickness of the silicone rubber layer 2 more uniform without using a spray coating method will be described.
■ まず円ＦＪ型内に液状硬化型シリコーンゴムを注入
し、硬化させて芯出し硬化層を形成する。(2) First, liquid curing silicone rubber is injected into the circular FJ mold and cured to form a centering hardened layer.
＠ 次いで液状シリコーンゴムを注入し、遠心成形しつ
つ半加硫状態とする。@ Next, liquid silicone rubber is injected and centrifugally molded to a semi-vulcanized state.
■ この半硬化状のシリコーンゴム層の表面に接着層を
形成する。■ Form an adhesive layer on the surface of this semi-cured silicone rubber layer.
■ 更に、耐熱性ポリウレタンを注入し、遠心成形した
後、本加硫を行って硬化させることにより、未研摩で鏡
面仕上げの一体成形による２層ベルトを得る。(2) Further, heat-resistant polyurethane is injected, centrifugally molded, and then main vulcanization is performed and hardened to obtain an unpolished, mirror-finished, integrally molded two-layer belt.
ここで接着層とは、レリコーン層と耐熱性ウレタン層と
を密着するためのものであり、好適な材料としては両者
との密着性の優れている「ブライマーＡ；プライマーＰ
」 （（商品名）；信越化学工業社製）が例示できろ。Here, the adhesive layer is for adhering the silicone layer and the heat-resistant urethane layer, and suitable materials include "Brymer A" and "Primer P", which have excellent adhesion to both.
((Product name); manufactured by Shin-Etsu Chemical Co., Ltd.) is an example.
尚、上述した＠と■との工程を逆にして、一体成形の２
層ベルトを得て使用時に裏返して用いることも可能であ
る。この際シリコーンゴム注入時に、シリコーンオイル
を注入し、シリコーンオイルの含有量の多い定着ベルト
とすれば、更にトナーとの離型性が向上する。In addition, by reversing the steps of @ and ■ mentioned above,
It is also possible to obtain a layered belt and turn it over during use. At this time, if silicone oil is injected when silicone rubber is injected to create a fixing belt with a high silicone oil content, the releasability from the toner will be further improved.
また、遠心成形時に必要に応じてフッ素樹脂、カーボン
等の滑材粉を添加するようにしてもよい。Further, lubricant powder such as fluororesin or carbon may be added as necessary during centrifugal molding.
定着ベルトとして用いる場合、熱容量を小さくするため
、例えば輻３０Ｇｍ、長さ４００履の定着ベルトとする
場合、０．５〜２．（１ｗｍの厚さとするのが望ましい
。When used as a fixing belt, in order to reduce the heat capacity, for example, when the fixing belt has a diameter of 30 Gm and a length of 400 shoes, the heat capacity is 0.5 to 2. (The thickness is preferably 1 wm.
く実 施 例〉 以下本発明を実施例に基づいて説明する。Practical example The present invention will be explained below based on examples.
（実施例１）
第２ＦＭ？ζ示すように、外周を保温層１３で覆い内部
に加熱用流体の通路１２を有し、蓋１４で開口を閉じる
ようにした箱形の加熱ジャケット１１内に、加熱ジャケ
ット１１の底部を貫通して、モーター１５で回転するよ
うに設けた回転軸１６の一端を侵入させ、回転軸１６の
一端（ζ周間型１７の一端を固定した遠心成形装置を用
いて以下のようにして定着ベルトを製造した。(Example 1) 2nd FM? ζ As shown, the bottom of the heating jacket 11 is penetrated into a box-shaped heating jacket 11 whose outer periphery is covered with a heat insulating layer 13 and has a heating fluid passage 12 inside, and whose opening is closed with a lid 14. Then, one end of the rotating shaft 16 provided to be rotated by the motor 15 is inserted, and using a centrifugal molding device in which one end of the rotating shaft 16 (one end of the ζ peripheral mold 17 is fixed), the fixing belt is formed as follows. Manufactured.
内径１４０ ｒｍ 、長さ５００＋ｎ＋ａの円筒型を１
０００「、ｐｌで回転させながら、常諷破化性シリコー
ンゴム信越化学工業製ＫＥ１８００Ａ１００重量部、同
じ＜ＫＦ、１８００１３１０重量部、同じ（ＫＥ１８０
０Ｃ２重Ｊｔ部と、シリコーンオイル５０ｆｉ量部、ト
ルエン５０重量部からなる混合物を、円ＷＪ型内に注入
し、１０〜１５分そのまま回転をつづけ円筒型内面に遠
心成形しついで１４０℃の雰囲気に１２０分間保持し円
筒型内で硬化させ、円筒型内にシリコーンゴムの硬化層
を形成した。このときのシリコーンゴムの硬化層の内径
は１３５ｍであった。1 cylindrical shape with inner diameter 140 rm and length 500+n+a
000", while rotating at pl, the silicone rubber KE1800A made by Shin-Etsu Chemical Co., Ltd. 100 parts by weight, the same <KF, 18001310 parts by weight, the same (KE180
A mixture consisting of 0C double Jt part, 50 parts of silicone oil, and 50 parts by weight of toluene was injected into a circular WJ mold, kept rotating for 10 to 15 minutes, centrifugally molded on the inner surface of the cylindrical mold, and then placed in an atmosphere of 140 °C. It was held for 120 minutes and cured in the cylindrical mold to form a cured layer of silicone rubber inside the cylindrical mold. The inner diameter of the cured layer of silicone rubber at this time was 135 m.
次いで、この円筒型を１２０ ｒ、ｐ、ｍで回転しつつ
シリコーンゴムの硬化層の内面に、イハラケミカル工業
■製のボレアＲ−１１０（ポリウレタンウレア）のポリ
オール９５，５ｇをトルエン溶媒に溶解し、さらにイソ
シアネー）−３１，５ｇを混合しｔ：混合物を注入し、
回転を１００ Ｏｒ、ｐ、ｍｉこ上昇してから加熱し、
雰囲気温度を徐々に１２０〜１３０℃にＥｊｌ、温し、
前記同転速度で３０分間回転した。回転を停止し、シリ
コーンゴムの硬化層から剥離した耐熱性ポリウレタンの
円筒体を、外径１３０ｍの円筒状のドラムに嵌め、１８
０℃で４時間加熱して硬化を完了させた。その後円筒状
のドラムから抜き取って周長４０７ｍ、輻４８０ ｗｓ
、厚さ０．６ａ＋ｍのベルト本体を得ｔこ。Next, while rotating this cylindrical mold at 120 r, p, m, 95.5 g of polyol Borea R-110 (polyurethane urea) manufactured by Ihara Chemical Industry ■ was dissolved in toluene solvent on the inner surface of the cured layer of silicone rubber. , further mixed with 31.5 g of isocyanate) and injected the mixture;
Increase the rotation to 100 Or, p, mi and then heat.
Gradually increase the ambient temperature to 120-130°C,
It was rotated for 30 minutes at the same rotation speed. The rotation was stopped, and the heat-resistant polyurethane cylinder peeled off from the cured layer of silicone rubber was fitted into a cylindrical drum with an outer diameter of 130 m.
Curing was completed by heating at 0° C. for 4 hours. After that, it was extracted from the cylindrical drum and had a circumference of 407 m and a radius of 480 ws.
A belt body with a thickness of 0.6a+m was obtained.
このベルト本体の表面に液状シリコーンＫＥ−１３００
（信越化学社製）をスプレーコートして約７５μｍのシ
リコーンゴム層を形成して、定着ベルトとした。Liquid silicone KE-1300 is applied to the surface of this belt body.
(manufactured by Shin-Etsu Chemical Co., Ltd.) to form a silicone rubber layer of approximately 75 μm to form a fixing belt.
この定着ベルトを試験機に実装して用いたところ、トナ
ーとの剥離性もよく、長時間使用後も安定した走行が実
現できた。When this fixing belt was installed and used in a test machine, it had good releasability from toner and was able to run stably even after long-term use.
（実施例２）
前述した実施例１と同様に、第２図に示す遠心成形装置
を用いて定着ベルトを製造した。(Example 2) In the same manner as in Example 1 described above, a fixing belt was manufactured using the centrifugal molding apparatus shown in FIG.
内径１４０−１長さ５００ｍの円筒型を１０００ ｒ、
ｐ、ｍで回転させながら、熱硬化性ウレタンゴム「サン
ブレンＰ−６６４Ｊ （（商品名）；三洋化成工業社
製）１００重量部及び架橋剤（１，４−ブタンジオール
とトリメチロールプロパンとの混合物）４重量部からな
る廃合物を、円筒型内に注入し、１０〜１５分そのまま
回転をつづけ円筒型内面に遠心成形しついで１３０℃の
雰囲気に６０分間保持し円筒型内で硬化させ、円筒型内
にウレタンゴムの硬化層を形成した。こ゛のときのウレ
タンゴムの硬化層の内径は１３０ｍであった。A cylindrical shape with an inner diameter of 140-1 and a length of 500 m is heated at 1000 r,
100 parts by weight of thermosetting urethane rubber "Sunbren P-664J ((trade name); manufactured by Sanyo Chemical Industries, Ltd.)" and a crosslinking agent (a mixture of 1,4-butanediol and trimethylolpropane) while rotating at ) A waste compound consisting of 4 parts by weight was injected into a cylindrical mold, kept rotating for 10 to 15 minutes, centrifugally formed on the inner surface of the cylindrical mold, and kept in an atmosphere of 130°C for 60 minutes to harden within the cylindrical mold. A cured layer of urethane rubber was formed in the mold.The inner diameter of the cured layer of urethane rubber at this time was 130 m.
次いで、この円筒型を１２０ ｒ、ｐ、ｍで回転しつつ
ウレタンゴムの硬化層の内面に、液状シリコーンゴム混
合物（ＫＥ１３００（商品名）；信越化学工業社製１０
０″ＩＩＪ１部：触媒１０重量部； シリコーンオイル
ｒＫＦ９６」（（商品名）信越化学工業社製）７５ｇを
注入し、＠転を１００ Ｏｒ、ｐ、ｍｓに上昇してから
加熱し、雰囲気温度を徐々に１００℃に昇温し、前記回
転速度で３０分間回転し、半硬化させた後、５０℃位ま
で冷却させた。Next, while rotating this cylindrical mold at 120 r, p, m, a liquid silicone rubber mixture (KE1300 (trade name); manufactured by Shin-Etsu Chemical Co., Ltd.
1 part of IIJ: 10 parts by weight of catalyst; 75 g of "silicone oil rKF96" ((trade name) manufactured by Shin-Etsu Chemical Co., Ltd.) was injected, and the temperature was raised to 100 Or, p, ms, and then heated to bring the ambient temperature down. The temperature was gradually raised to 100°C, and the material was rotated at the above rotational speed for 30 minutes to semi-cure, and then cooled to about 50°C.
その後、接着剤として「ブライマーＡ」（（商品名）；
信越化学工業社製）を円筒型内に投入し、半硬化状のシ
リコーンゴム層の表面に接着層を形成した。After that, use "Brymar A" ((product name);
(manufactured by Shin-Etsu Chemical Co., Ltd.) into a cylindrical mold to form an adhesive layer on the surface of the semi-cured silicone rubber layer.
次いで、この円筒型を１２０ ｒ、ｐ、ｍで回転しつつ
形成される接１１７１の内面に、イハラケミカル工業■
製のボレアＲ−１１０（ポリウレタンウレア）のポリオ
ール３８．３ｇを、トルエン溶媒に溶解し、さらにイソ
シアネ−１１２，７ｇを混合した混合物を注入し、回転
を１０００ ｒ、ｐ、ｍに上昇してから加熱し雰囲気温
度を徐々に１２０〜１３０℃に昇温し、前記回転速度で
３０分間回転した。回転を停止し、ウレタンゴムの硬化
層から剥離した二層の円筒体を、外径１３０ＩＩＩＩ１
１の円筒状のドラムに嵌め、１８０℃で４時間加熱して
硬化を完了させた。その後円筒状ドラムから抜き取って
周長４０７１Ｔ１１１１１幅４８０ｍ。Next, while rotating this cylindrical mold at 120 r, p, m, Ihara Chemical Co., Ltd.
A mixture of 38.3 g of polyol Borea R-110 (polyurethane urea) manufactured by Co., Ltd., was dissolved in toluene solvent, and 112.7 g of isocyanate was added thereto, and the rotation was increased to 1000 r, p, m. The atmosphere was heated and the temperature was gradually raised to 120 to 130° C., and the mixture was rotated at the above rotational speed for 30 minutes. The rotation was stopped, and the two-layered cylindrical body peeled off from the cured layer of urethane rubber had an outer diameter of 130III1.
It was fitted into the cylindrical drum of No. 1 and heated at 180° C. for 4 hours to complete curing. After that, it was extracted from the cylindrical drum and had a circumference of 4071T11111 and a width of 480m.
厚さ０．６＋ｎ＋ａのベルト本体を得た。A belt body having a thickness of 0.6+n+a was obtained.
この得られｒ二定着ベルトを用い従来と同様にベルト定
着として用いたところ、帯電防止効果が高く、トナーと
の剥離性が良いものであった。また長期間Ｉこ亙って使
用しても全く異常は見られなかった。When this obtained r2 fixing belt was used as a belt fixing belt in the same manner as in the past, it was found to have a high antistatic effect and good releasability from toner. Further, no abnormalities were observed even after long-term use.
〈発明の効果〉
以上、実施例と共に述べたように本発明によればベルト
搬送性の良い耐熱性ポリウレタンをベルト本体とし、そ
の表面にトナーとの離型性の良いシリコーンゴム層とを
一体に成形されてなるので高寿命であり、長期間に亘っ
て安定した走行を実現できるという効果を奏する。<Effects of the Invention> As described above with the embodiments, according to the present invention, the belt body is made of heat-resistant polyurethane with good belt conveyance, and a silicone rubber layer with good release properties from toner is integrally formed on the surface of the belt body. Since it is molded, it has a long lifespan and has the effect of realizing stable running over a long period of time.
第１図は本発明にかかる定着ベルトを示す側面図、第２
図は実施例に用いた遠心成形装置の断面図、第３図は複
写部の概略図、第４図はロール定着を示す説明図、第５
図はベルト定着を示す説明図である。
図 面 中、
１はベルト本体、
２はシリコーンゴム層である。FIG. 1 is a side view showing a fixing belt according to the present invention, and FIG.
The figure is a sectional view of the centrifugal molding device used in the example, Figure 3 is a schematic diagram of the copying section, Figure 4 is an explanatory diagram showing roll fixing, and Figure 5 is a schematic diagram of the copying section.
The figure is an explanatory diagram showing belt fixing. In the drawings, 1 is the belt body, and 2 is the silicone rubber layer.
Claims (4)
ルトにおいて、耐熱性ポリウレタンからなるベルト本体
と、このベルト本体の表面に設けたシリコーンゴム層と
が一体に成形されてなることを特徴とする定着ベルト。(1) In the fixing belt that fixes the electrostatic image transferred to the transfer object, the belt body made of heat-resistant polyurethane and the silicone rubber layer provided on the surface of this belt body are integrally molded. Features a fixing belt.
、シリコーンゴム層をコーティングしてなることを特徴
とする定着ベルトの製造方法。(2) A method for producing a fixing belt, characterized in that the surface of the belt body made of heat-resistant polyurethane is coated with a silicone rubber layer.
形する定着ベルトの製造方法において、液状シリコーン
ゴムを注入して半硬化状態に遠心成形し、 この半硬化状のシリコーンゴム層の表面に接着層を形成
し、 耐熱性ポリウレタンを注入して遠心成形し、その後本加
硫することを特徴とする定着ベルトの製造方法。(3) In a fixing belt manufacturing method in which heat-resistant polyurethane is injected into a cylindrical shape and centrifugally molded, liquid silicone rubber is injected and centrifugally molded to a semi-cured state, and the surface of the semi-cured silicone rubber layer is A method for manufacturing a fixing belt, which comprises forming an adhesive layer, injecting heat-resistant polyurethane, centrifugally molding the adhesive layer, and then performing main vulcanization.
形する定着ベルトの製造方法において、耐熱性ポリウレ
タンを注入して半硬化状態に遠心成形し、 この半硬化状の耐熱性ポリウレタン層の表面に接着層を
形成し、 液状シリコーンゴムを注入して遠心成形し、その後本加
硫することを特徴とする定着ベルトの製造方法。(4) In a method for manufacturing a fixing belt in which heat-resistant polyurethane is injected into a cylindrical shape and centrifugally formed, the heat-resistant polyurethane is injected and centrifugally formed into a semi-cured state, and the surface of this semi-cured heat-resistant polyurethane layer A method for manufacturing a fixing belt, which comprises forming an adhesive layer on the adhesive layer, injecting liquid silicone rubber, performing centrifugal molding, and then performing main vulcanization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17202989A JPH0338678A (en) | 1989-07-05 | 1989-07-05 | Fixing belt and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17202989A JPH0338678A (en) | 1989-07-05 | 1989-07-05 | Fixing belt and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0338678A true JPH0338678A (en) | 1991-02-19 |
Family
ID=15934208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17202989A Pending JPH0338678A (en) | 1989-07-05 | 1989-07-05 | Fixing belt and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0338678A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345300A (en) * | 1992-02-10 | 1994-09-06 | Fuji Xerox Co., Ltd. | Fixing unit having an endless belt including a base layer and a composite material |
| JP2002292655A (en) * | 2001-03-28 | 2002-10-09 | Sumitomo Rubber Ind Ltd | Method for manufacturing silicone rubber belt |
-
1989
- 1989-07-05 JP JP17202989A patent/JPH0338678A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345300A (en) * | 1992-02-10 | 1994-09-06 | Fuji Xerox Co., Ltd. | Fixing unit having an endless belt including a base layer and a composite material |
| JP2002292655A (en) * | 2001-03-28 | 2002-10-09 | Sumitomo Rubber Ind Ltd | Method for manufacturing silicone rubber belt |
| JP4757394B2 (en) * | 2001-03-28 | 2011-08-24 | 住友ゴム工業株式会社 | Manufacturing method of silicone rubber belt |
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