JP2002295450A - Material for fixing roller covering tube - Google Patents
Material for fixing roller covering tubeInfo
- Publication number
- JP2002295450A JP2002295450A JP2001102867A JP2001102867A JP2002295450A JP 2002295450 A JP2002295450 A JP 2002295450A JP 2001102867 A JP2001102867 A JP 2001102867A JP 2001102867 A JP2001102867 A JP 2001102867A JP 2002295450 A JP2002295450 A JP 2002295450A
- Authority
- JP
- Japan
- Prior art keywords
- fixing roller
- copolymer
- tube
- perfluoro
- mol
- 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
- 239000000463 material Substances 0.000 title claims abstract description 11
- 229920001577 copolymer Polymers 0.000 claims abstract description 26
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 claims abstract description 16
- -1 perfluoro Chemical group 0.000 claims abstract description 9
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002344 surface layer Substances 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000007334 copolymerization reaction Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- KHXKESCWFMPTFT-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2-trifluoroethenoxy)propane Chemical compound FC(F)=C(F)OC(F)(F)C(F)(F)C(F)(F)F KHXKESCWFMPTFT-UHFFFAOYSA-N 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、定着ローラ被覆チ
ューブ用材料に関する。更に詳しくは、複写機、パソコ
ン用プリンター等でトナー定着に用いられる定着ローラ
を被覆するチューブ用の材料に関する。The present invention relates to a material for a tube covered with a fixing roller. More specifically, the present invention relates to a tube material for covering a fixing roller used for fixing a toner in a copying machine, a printer for a personal computer, and the like.
【０００２】[0002]
【従来の技術】定着ローラの表面を被覆するチューブ用
材料としては、従来からテトラフルオロエチレン-パー
フルオロ(プロピルビニルエーテル)共重合体が多く用い
られている。しかしながら、この共重合体は、紙離れ性
や耐久性は良好であるものの、高い硬度を有しているた
め、定着ローラ被覆チューブとしてはトナー粒子に対す
る追随性が低く、コピー画像の高性能化が求められる現
在、高画質化においては十分ではないという問題があ
る。2. Description of the Related Art As a tube material for covering the surface of a fixing roller, a tetrafluoroethylene-perfluoro (propyl vinyl ether) copolymer has conventionally been widely used. However, although this copolymer has good paper releasability and durability, it has high hardness, so that it has low followability to toner particles as a fixing roller-covered tube, and high performance of a copy image is achieved. At present, there is a problem that high image quality is not sufficient.
【０００３】このため、定着ローラ被覆チューブの硬度
を低下させることが有効となるが、硬度を低下させるた
めに、パーフルオロ(アルキルビニルエーテル)の共重合
量を増加させるという手段をとることができる。しかし
ながら、パーフルオロ(プロピルビニルエーテル)は共重
合性に乏しいため、共重合率を上げることによる硬度の
低下は困難である。また、共重合率を上げるために多量
のパーフルオロ(プロピルビニルエーテル)を使用する
と、得られる共重合体の分子量が低くなり、望まれる機
械的強度を有する共重合体を形成し得ない。さらに、パ
ーフルオロ(プロピルビニルエーテル)の共重合量を増加
させ、硬度の低下を図られたとしても、分子量が低い場
合には、使用中に回転部材を覆っているチューブにクラ
ックが発生し、回転部材としての機能を失ってしまうよ
うになる。For this reason, it is effective to reduce the hardness of the tube covered with the fixing roller, but in order to reduce the hardness, it is possible to take a measure of increasing the copolymerization amount of perfluoro (alkyl vinyl ether). However, since perfluoro (propyl vinyl ether) has poor copolymerizability, it is difficult to decrease the hardness by increasing the copolymerization rate. Further, when a large amount of perfluoro (propyl vinyl ether) is used to increase the copolymerization rate, the molecular weight of the obtained copolymer becomes low, and a copolymer having desired mechanical strength cannot be formed. Furthermore, even if the copolymerization amount of perfluoro (propyl vinyl ether) is increased and the hardness is reduced, if the molecular weight is low, cracks occur in the tube covering the rotating member during use, and rotation occurs. The function as a member is lost.
【０００４】一方、側鎖に水素原子を有するポリフルオ
ロアルキル基 -CH2(CF2)nX (X:水素原子またはハロゲン
原子)を有するフルオロビニルエーテルでは、共重合率
の良いものもあるが(特公平7-2816号公報)、重合反応時
に分子内の水素が重合反応時に連鎖移動を起し、低分子
量化して望まれるような共重合体が得られない。On the other hand, some fluorovinyl ethers having a polyfluoroalkyl group —CH 2 (CF 2 ) nX (X: hydrogen atom or halogen atom) having a hydrogen atom in the side chain have a good copolymerization ratio, Japanese Patent Publication No. Hei 7-2816), hydrogen in the molecule undergoes chain transfer during the polymerization reaction during the polymerization reaction, and the desired molecular weight is reduced, so that a desired copolymer cannot be obtained.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、テト
ラフルオロエチレン-パーフルオロ(アルキルビニルエー
テル)共重合体を用いた定着ローラ被覆チューブ用材料
であって、チューブの低硬度化を図り、定着ローラとし
ての高画質化に追随させかつ適当な分子量を有するもの
とすることにより、耐クラック性にすぐれた定着ローラ
被覆用チューブ材料を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a fixing roller-covered tube material using a tetrafluoroethylene-perfluoro (alkyl vinyl ether) copolymer. An object of the present invention is to provide a tube material for coating a fixing roller having excellent crack resistance by following a high image quality as a roller and having an appropriate molecular weight.
【０００６】[0006]
【課題を解決するための手段】かかる本発明の目的は、
テトラフルオロエチレン90〜99モル%とパーフルオロ(エ
チルビニルエーテル)10〜1モル%との共重合組成および5
×103〜50×103kg/m・sの比溶融粘度(372℃)を有する共
重合体からなる定着ローラ被覆チューブ用材料によって
達成される。SUMMARY OF THE INVENTION The object of the present invention is as follows.
Copolymer composition of tetrafluoroethylene 90-99 mol% and perfluoro (ethyl vinyl ether) 10-1 mol% and 5
This is achieved by a material for a fixing roller-coated tube made of a copolymer having a specific melt viscosity (372 ° C.) of × 10 3 to 50 × 10 3 kg / m · s.
【０００７】[0007]
【発明の実施の形態】テトラフルオロエチレンと共重合
されるパーフルオロ(エチルビニルエーテル)は、共重合
体中10〜1モル%、好ましくは8〜5モル%の割合で共重合
されているものが用いられる。これ以下の共重合割合で
は、ポリテトラフルオロエチレンまたはテトラフルオロ
エチレン-パーフルオロ(プロピルビニルエーテル)共重
合体と同様に高い硬度を有し、一方これ以上の割合で共
重合させると、必要以上の軟化を生じ、紙離れ性および
耐クラック性が低下するようになる。BEST MODE FOR CARRYING OUT THE INVENTION Perfluoro (ethyl vinyl ether) copolymerized with tetrafluoroethylene has a copolymer content of 10 to 1 mol%, preferably 8 to 5 mol% in the copolymer. Used. At a copolymerization ratio below this, it has a high hardness like the polytetrafluoroethylene or tetrafluoroethylene-perfluoro (propyl vinyl ether) copolymer, while if it is copolymerized at a higher ratio, it becomes softer than necessary. And the paper separation property and the crack resistance are reduced.
【０００８】また、この共重合体は、5×103〜50×103k
g/m・s、好ましくは7×103〜30×10 3kg/m・sの比溶融粘
度(372℃)を有するものが用いられる。これ以下の比溶
融粘度のものを用いると、チューブにクラックが発生す
ることがあり、一方これ以上の比溶融粘度のものを用い
ると、成形性が悪く、均一な肉厚のチューブが得られな
いことがある。Further, this copolymer has a size of 5 × 10Three~ 50 × 10Threek
g / m ・ s, preferably 7 × 10Three~ 30 × 10 ThreeSpecific melting viscosity of kg / m
What has a temperature (372 degreeC) is used. Specific solution below this
Cracks occur in the tube when melt viscosity is used.
May be used.
In this case, the moldability is poor and a tube with a uniform wall thickness cannot be obtained.
Sometimes.
【０００９】こうした性状を有するテトラフルオロエチ
レン-パーフルオロ(エチルビニルエーテル)共重合体を
用いてのチューブ状フィルムの成形は、円形チューブダ
イを用いる溶融押出し法によって行われる。チューブ
は、一般に約5〜500μm、好ましくは約50〜100μmの厚
さで、それが被覆される定着ローラの外径よりも約0.1
〜1.5mm程度大きな外径を有するように成形される。The formation of a tubular film using a tetrafluoroethylene-perfluoro (ethyl vinyl ether) copolymer having such properties is performed by a melt extrusion method using a circular tube die. The tube is generally about 5 to 500 μm, preferably about 50 to 100 μm thick, about 0.1 to less than the outer diameter of the fuser roller on which it is coated.
It is formed so as to have a large outer diameter of about 1.5 mm.
【００１０】かかる寸法を有するチューブは、定着ロー
ラを構成する表面にシリコーンゴムを被覆したアルミニ
ウム製円筒状芯金等の表面ゴム層上に、プライマーを介
して熱融着することにより被覆が行われる。A tube having such dimensions is coated by heat-sealing via a primer onto a surface rubber layer such as an aluminum cylindrical metal core having silicone rubber coated on the surface constituting the fixing roller. .
【００１１】[0011]
【発明の効果】本発明に係る定着ローラ被覆チューブ用
材料から成形されたチューブを表面層として形成させた
定着ローラは、画像鮮明度を向上させているばかりでは
なく、従来の軟質フッ素樹脂を用いた場合に問題となっ
ていた耐クラック性をも著しく向上させるという効果を
奏する。The fixing roller in which the tube formed from the fixing roller-covered tube material according to the present invention is formed as a surface layer not only improves the image definition but also uses a conventional soft fluororesin. This has the effect of significantly improving the crack resistance, which has been a problem in the case where it is present.
【００１２】[0012]
【実施例】次に、実施例について本発明を説明する。Next, the present invention will be described with reference to examples.
【００１３】実施例 テトラフルオロエチレン92モル%とパーフルオロ(エチル
ビニルエーテル)8モル%との共重合組成および20×103kg
/m・sの比溶融粘度(372℃)を有する共重合体から、円形
チューブダイを用いて溶融押出しし、外径40mm、厚さ50
μmのチューブを成形した。このチューブを、表面にシ
リコーンゴムを被覆したアルミニウム製円筒状芯金(外
径39.0mm)のシリコーンゴム層上に、プライマーを介し
て熱融着することにより被覆して、複写機プリンタ用定
着ローラを作製した。EXAMPLE Copolymer composition of 92 mol% of tetrafluoroethylene and 8 mol% of perfluoro (ethyl vinyl ether) and 20 × 10 3 kg
/ m · s from a copolymer having a specific melt viscosity of (372 ° C), melt extrusion using a circular tube die, outer diameter 40 mm, thickness 50
A μm tube was molded. This tube is coated on a silicone rubber layer of an aluminum cylindrical core metal (outside diameter 39.0 mm) coated with silicone rubber by heat sealing via a primer, and a fixing roller for a copier printer. Was prepared.
【００１４】この定着ローラについて、次の各項目の測
定を行った。 画像鮮明度：フルカラープリントテストを行ない、初め
てのプリント色合いと500枚目のプリント色合いおよび
にじみを調べ、非常に良いものを◎、良いものを〇、や
や劣るものを△と評価 耐クラック性：定着温度200℃の条件下で毎分20枚の速
度でコピーを行ない、100,000枚のコピーをとった後の
共重合体層のクラックの発生の有無を観察し、耐クラッ
ク性の非常に良いものを◎、良いものを〇、やや劣るも
のを△と評価 紙離れ性：上記クラック発生試験条件下で、定着ローラ
とコピー用紙との紙離れ性を調べ、非常に良いものを
◎、良いものを〇、やや劣るものを△と評価The following items were measured for this fixing roller. Image sharpness: Performed a full-color print test, and examined the first print color and the 500th print color and bleed, evaluated very good as ◎, good as 〇, and slightly poor as や. Crack resistance: Fixation Copies were made at a speed of 20 sheets per minute at a temperature of 200 ° C, and after the copying of 100,000 sheets, the presence or absence of cracks in the copolymer layer was observed. ◎, good ones were evaluated as poor, and slightly poor ones were evaluated as paper. Paper releasability: Under the above cracking test conditions, the paper releasability between the fixing roller and the copy paper was examined. , Rated slightly inferior
【００１５】比較例１ 実施例において、同じ共重合組成を有し、比溶融粘度(3
72℃)が3×103kg/m・sのテトラフルオロエチレン-パー
フルオロ(エチルビニルエーテル)共重合体が用いられ
た。COMPARATIVE EXAMPLE 1 In the examples, the same copolymer composition was used, and the specific melt viscosity (3
(72 ° C.) a tetrafluoroethylene-perfluoro (ethyl vinyl ether) copolymer having a concentration of 3 × 10 3 kg / m · s was used.
【００１６】比較例２ 実施例において、テトラフルオロエチレン-パーフルオ
ロ(エチルビニルエーテル)共重合体の代りに、テトラフ
ルオロエチレン-パーフルオロ(プロピルビニルエーテ
ル)共重合体(ダイキン製品AP-230)が用いられた。Comparative Example 2 In the examples, a tetrafluoroethylene-perfluoro (propyl vinyl ether) copolymer (AP-230 manufactured by Daikin) was used in place of the tetrafluoroethylene-perfluoro (ethyl vinyl ether) copolymer. Was.
【００１７】以上の実施例および各比較例における評価
結果は、共重合体層の硬度(ASTM-D-2240デュロメーター
使用)と共に、次の表に示される。 表 例 画像鮮明度 耐クラック性 紙離れ性 硬度 実施例 ◎ ◎ 〇 D58 比較例1 ◎ △ 〇 D58 〃 2 △ ◎ 〇 D60The evaluation results in the above Examples and Comparative Examples are shown in the following table together with the hardness of the copolymer layer (using ASTM-D-2240 durometer). Table Example Image clarity Crack resistance Paper release hardness Example ◎ ◎ 〇 D58 Comparative Example 1 ◎ △ 〇 D58 〃 2 △ ◎ 〇 D60
【００１８】なお、比溶融粘度の値は、東洋精機製メル
トインデクサーを用い、共重合体を内径9.5mmのシリン
ダーに入れ、372℃の温度に5分間保った後、5Kgfのピス
トン荷重下に内径2.095mm、長さ8.00mmのオリフィスを
通して押出し、このときの押出し速度(g/分)で53150で
割った値として求めた。The value of the specific melt viscosity was determined by using a melt indexer manufactured by Toyo Seiki Co., Ltd., placing the copolymer in a cylinder having an inner diameter of 9.5 mm, maintaining the temperature at 372 ° C. for 5 minutes, and applying a piston load of 5 kgf. It was extruded through an orifice having an inner diameter of 2.095 mm and a length of 8.00 mm, and was obtained by dividing the extrusion speed (g / min) at this time by 53150.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０８Ｆ 214:18） Ｃ０８Ｌ 27:18 Ｃ０８Ｌ 27:18 (72)発明者 榎田 貴司 茨城県北茨城市磯原町上相田831−２ 日 本メクトロン株式会社ケミテック事業部内 (72)発明者 中村 誠一 茨城県北茨城市磯原町上相田831−２ 日 本メクトロン株式会社ケミテック事業部内 Ｆターム(参考） 2H033 AA26 BB04 BB06 BB14 3J103 AA02 AA13 AA21 AA51 EA05 FA12 FA14 GA02 GA57 GA58 GA66 HA04 HA12 4F071 AA26 AA26X AA27 AA75 AA88 AA88X AF13 AF25 AF53 AG21 AG27 AH16 BA01 BC05 BC12 4J100 AC26P AE39Q CA04 DA09 DA48 EA05 JA28 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C08F 214: 18) C08L 27:18 C08L 27:18 (72) Inventor Takashi Enoda Isoharamachikami, Kitaibaraki City, Ibaraki Prefecture 831-2 Aida, Chemitech Division, Nippon Mektron Co., Ltd. (72) Inventor Seiichi Nakamura 831-2, Kami-Aida, Isohara-machi, Kitaibaraki-shi, Ibaraki AA13 AA21 AA51 EA05 FA12 FA14 GA02 GA57 GA58 GA66 HA04 HA12 4F071 AA26 AA26X AA27 AA75 AA88 AA88X AF13 AF25 AF53 AG21 AG27 AH16 BA01 BC05 BC12 4J100 AC26P AE39Q CA04 DA09 DA48 EA05 JA28
Claims (3)
パーフルオロ(エチルビニルエーテル)10〜1モル%との共
重合組成および5×103〜50×103kg/m・sの比溶融粘度(3
72℃)を有する共重合体からなる定着ローラ被覆チュー
ブ用材料。1. A copolymer composition of 90 to 99 mol% of tetrafluoroethylene and 10 to 1 mol% of perfluoro (ethyl vinyl ether) and a specific melt viscosity of 5 × 10 3 to 50 × 10 3 kg / m · s ( Three
(72 ° C.).
用材料から成形された定着ローラ被覆チューブ。2. A fixing roller covered tube formed from the material for a fixing roller covered tube according to claim 1.
を表面層に形成させた定着ローラ。3. A fixing roller having the fixing roller covered tube according to claim 2 formed on a surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001102867A JP2002295450A (en) | 2001-04-02 | 2001-04-02 | Material for fixing roller covering tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001102867A JP2002295450A (en) | 2001-04-02 | 2001-04-02 | Material for fixing roller covering tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002295450A true JP2002295450A (en) | 2002-10-09 |
Family
ID=18956009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001102867A Pending JP2002295450A (en) | 2001-04-02 | 2001-04-02 | Material for fixing roller covering tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002295450A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003051944A1 (en) * | 2001-12-18 | 2003-06-26 | Unimatec Co., Ltd | Fluorinated terpolymer |
| US20100119754A1 (en) * | 2007-05-10 | 2010-05-13 | Masaki Kurokawa | Fluororesin tube and process for producing the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64697A (en) * | 1987-02-04 | 1989-01-05 | Fumiaki Tsuchiya | Static electricity removing material for paper |
| JPH07126329A (en) * | 1993-10-29 | 1995-05-16 | Nippon Mektron Ltd | Tetrafuloroethylene/perfluorovinyl ether copolymer |
| JPH09315615A (en) * | 1996-01-24 | 1997-12-09 | Ntn Corp | Sheet transporting roller body for image forming device |
| JPH11161079A (en) * | 1997-11-27 | 1999-06-18 | Sharp Corp | Fixing device |
-
2001
- 2001-04-02 JP JP2001102867A patent/JP2002295450A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64697A (en) * | 1987-02-04 | 1989-01-05 | Fumiaki Tsuchiya | Static electricity removing material for paper |
| JPH07126329A (en) * | 1993-10-29 | 1995-05-16 | Nippon Mektron Ltd | Tetrafuloroethylene/perfluorovinyl ether copolymer |
| JPH09315615A (en) * | 1996-01-24 | 1997-12-09 | Ntn Corp | Sheet transporting roller body for image forming device |
| JPH11161079A (en) * | 1997-11-27 | 1999-06-18 | Sharp Corp | Fixing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003051944A1 (en) * | 2001-12-18 | 2003-06-26 | Unimatec Co., Ltd | Fluorinated terpolymer |
| US7009017B2 (en) | 2001-12-18 | 2006-03-07 | Unimatec Co., Ltd. | Fluorinated terpolymer |
| US20100119754A1 (en) * | 2007-05-10 | 2010-05-13 | Masaki Kurokawa | Fluororesin tube and process for producing the same |
| US8097314B2 (en) * | 2007-05-10 | 2012-01-17 | Gunze Limited | Fluororesin tube and process for producing the same |
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