JP2008033086A - Rotary body for fixing and method for manufacturing the same - Google Patents
Rotary body for fixing and method for manufacturing the same Download PDFInfo
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- JP2008033086A JP2008033086A JP2006207627A JP2006207627A JP2008033086A JP 2008033086 A JP2008033086 A JP 2008033086A JP 2006207627 A JP2006207627 A JP 2006207627A JP 2006207627 A JP2006207627 A JP 2006207627A JP 2008033086 A JP2008033086 A JP 2008033086A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 86
- 239000011248 coating agent Substances 0.000 claims abstract description 27
- 238000000576 coating method Methods 0.000 claims abstract description 27
- 239000000945 filler Substances 0.000 claims abstract description 23
- 239000000155 melt Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000011521 glass Substances 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000011347 resin Substances 0.000 abstract description 11
- 229920005989 resin Polymers 0.000 abstract description 11
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 abstract 8
- 239000003973 paint Substances 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 10
- 238000005299 abrasion Methods 0.000 description 7
- 238000010304 firing Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 101100334739 Mus musculus Fgfr3 gene Proteins 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
- Fixing For Electrophotography (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
本発明は、電子複写機やレーザービームプリンターの定着部に用いられている定着用回転体に関する。 The present invention relates to a fixing rotator used in a fixing unit of an electronic copying machine or a laser beam printer.
従来、電子複写機やレーザービームプリンターの定着部に用いられている定着用回転体は、トナーとの離型性を高めるために、その表面に離型層としてフッ素樹脂層を設けて用いられている。このようなフッ素樹脂としては、テトラフルオロエチレンや、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等を用いることが知られている（特許文献１)。 Conventionally, a fixing rotator used in a fixing unit of an electronic copying machine or a laser beam printer is used with a fluororesin layer provided as a release layer on the surface thereof in order to improve releasability from toner. Yes. As such a fluororesin, it is known to use tetrafluoroethylene, tetrafluoroethylene-perfluoroethyl vinyl ether copolymer, or the like (Patent Document 1).
この定着用回転体である定着ローラや定着ベルトは、その基体として用いる芯金やベルト基体表面にプライマーを介してフッ素樹脂塗料を塗布し、加熱焼成してフッ素樹脂層を設けている。そして、耐屈曲性や表面平滑性の向上のため、芯金やベルト基体表面にメルトフローレートの異なる２種類のフッ素樹脂を含むフッ素樹脂塗料を塗布し、加熱焼成して３０μｍ程度の厚さのフッ素樹脂層を設ける方法が用いられている（特許文献２）。しかし、このようにメルトフローレートの大きなフッ素樹脂を被覆した定着ローラは、フッ素樹脂層の耐摩耗性などの耐久性が劣ることが知られている（特許文献６、７)。 A fixing roller or a fixing belt, which is a fixing rotating body, has a fluororesin layer provided by applying a fluororesin paint to a core metal or a belt base surface used as a base via a primer and baking it. Then, in order to improve the bending resistance and surface smoothness, a fluororesin paint containing two types of fluororesins having different melt flow rates is applied to the core metal or the belt substrate surface, and heated and fired to have a thickness of about 30 μm. A method of providing a fluororesin layer is used (Patent Document 2). However, it is known that such a fixing roller coated with a fluororesin having a high melt flow rate is inferior in durability such as wear resistance of the fluororesin layer (Patent Documents 6 and 7).
一方、高耐久化や高速化の要求に対し、定着ローラのフッ素樹脂層の耐磨耗性の向上させるために、充填剤を配合する技術が知られている（特許文献３〜５)。 On the other hand, in order to improve the wear resistance of the fluororesin layer of the fixing roller in response to demands for high durability and high speed, techniques for blending a filler are known (Patent Documents 3 to 5).
そこで、メルトフローレートの異なる２種類のフッ素樹脂を含むフッ素樹脂塗料に充填剤を配合して、フッ素樹脂層の耐摩耗性を向上しようとした。しかし、このようなフッ素樹脂塗料を芯金に塗布すると、乾燥後のフッ素樹脂層の表面にマッドクラックと呼ばれる大きなひび割れが発生し、このフッ素樹脂層を加熱焼成させてもひび割れが埋まることなく、焼成後のフッ素樹脂層にクラックと呼ばれるひび割れが残るという問題が生じた。そのため、フッ素樹脂層を目的の厚さよりも１０μｍ以上も厚く設けた後に、研磨加工で大きく削り込み、目的の厚さのフッ素樹脂層を持つ定着ローラを得ていた。 Therefore, an attempt was made to improve the wear resistance of the fluororesin layer by blending a fluororesin paint containing two types of fluororesins having different melt flow rates. However, when such a fluororesin coating is applied to the core metal, a large crack called a mud crack occurs on the surface of the dried fluororesin layer, and even if this fluororesin layer is heated and fired, the crack is not buried, The problem that the crack called a crack remained in the fluororesin layer after baking occurred. For this reason, a fixing roller having a fluororesin layer having a target thickness has been obtained by providing a fluororesin layer thicker than the target thickness by 10 μm or more and then sharpening it by polishing.
しかし、所定の厚さよりもかなり厚いフッ素樹脂層を作製し、それを研磨加工で大きく削り込むことは、手間と時間がかかり、製造コストが高くなる。そのため、研磨加工を行うことなく、表面が平滑で耐磨耗性に優れたフッ素樹脂層を持つ定着ローラとその製造方法が必要とされた。 However, producing a fluororesin layer that is considerably thicker than a predetermined thickness and sharply cutting the fluororesin layer by a polishing process takes time and effort, and the manufacturing cost increases. Therefore, there has been a need for a fixing roller having a fluororesin layer having a smooth surface and excellent wear resistance, and a manufacturing method thereof, without performing polishing.
本発明の目的は、焼成後のクラックが無い平滑で耐磨耗性に優れたフッ素樹脂層を持ち得る加工性に優れた定着用回転体及びその製造方法を提供することである。 SUMMARY OF THE INVENTION An object of the present invention is to provide a fixing rotating body excellent in processability and a method for producing the same, which can have a fluororesin layer having a smooth and excellent wear resistance without cracks after firing.
本願発明者らは、鋭意研究の結果、特定の異なるメルトフローレートを有する２種類のフッ素樹脂粒子と、充填剤とを特定の含量比率で配合した塗料を用いることにより、焼成後のクラックがなく平滑で耐磨耗性に優れたフッ素樹脂層を形成できることを見出し本発明を完成した。 As a result of earnest research, the inventors of the present application have no cracks after firing by using a paint in which two kinds of fluororesin particles having specific different melt flow rates and a filler are blended in a specific content ratio. The present invention was completed by finding that a fluororesin layer having a smooth and excellent wear resistance can be formed.
すなわち、本発明は、最外層にフッ素樹脂層を被覆した定着用回転体であって、該フッ素樹脂層は、メルトフローレートが１〜５g/分の第１のフッ素樹脂粒子と、メルトフローレートが１０〜２２g/分の第２のフッ素樹脂粒子と、充填剤とを含む塗料であって、前記第２のフッ素樹脂粒子の含量が、前記第１及び第２のフッ素樹脂粒子の合計量の１０〜５５重量％、前記充填剤の含量が前記第１及び第２のフッ素樹脂粒子の合計量の0.5〜３０重量％である塗料を表面に塗布してフッ素樹脂層を設けた、定着用回転体を提供する。さらに、本発明は、媒体中にフッ素樹脂粒子を含む塗料であって、メルトフローレートが１〜５g/分の第１のフッ素樹脂粒子と、メルトフローレートが１０〜２２g/分の第２のフッ素樹脂粒子と、充填剤とを含む塗料であって、前記第２のフッ素樹脂粒子の含量が、前記第１及び第２のフッ素樹脂粒子の合計量の１０〜５５重量％、前記充填剤の含量が前記第１及び第２のフッ素樹脂粒子の合計量の0.5〜３０重量％である塗料を表面に塗布してフッ素樹脂層を設ける、定着用回転体の製造方法を提供する。 That is, the present invention is a fixing rotating body in which a fluororesin layer is coated on the outermost layer, and the fluororesin layer includes first fluororesin particles having a melt flow rate of 1 to 5 g / min and a melt flow rate. Is a paint containing 10 to 22 g / min of second fluororesin particles and a filler, and the content of the second fluororesin particles is the total amount of the first and second fluororesin particles. A rotation for fixing, in which a fluororesin layer is provided by applying a coating having a surface content of 10 to 55% by weight and a filler content of 0.5 to 30% by weight of the total amount of the first and second fluororesin particles. Provide the body. Furthermore, the present invention is a coating material containing fluororesin particles in a medium, the first fluororesin particles having a melt flow rate of 1 to 5 g / min, and the second melt flow rate of 10 to 22 g / min. A coating material containing fluororesin particles and a filler, wherein the content of the second fluororesin particles is 10 to 55% by weight of the total amount of the first and second fluororesin particles, There is provided a method for producing a fixing rotor, wherein a coating having a content of 0.5 to 30% by weight of the total amount of the first and second fluororesin particles is applied to the surface to provide a fluororesin layer.
本発明に用いる定着用回転体はクラックが発生しない耐磨耗性に優れ、加工性に優れたフッ素樹脂層を形成することが可能であるため、電子複写機やレーザービームプリンターの定着ロールや定着ベルトに用いる事ができる。 The fixing rotating body used in the present invention has excellent wear resistance with no cracks, and can form a fluororesin layer with excellent workability. Therefore, the fixing roll or fixing of an electronic copying machine or a laser beam printer can be formed. Can be used for belts.
上記の通り、本発明に用いるフッ素樹脂塗料は、メルトフローレートが１〜５g/分の第１のフッ素樹脂粒子と、メルトフローレートが１０〜２２g/分の第２のフッ素樹脂粒子とを含む。第１のフッ素樹脂粒子のメルトフローレートは２〜４g/分が好ましく、第２のフッ素樹脂のメルトフローレートは１３〜２０g/分が好ましい。メルトフローレートが１〜５g/分の第１のフッ素樹脂粒子は、定着用回転体における最外層のフッ素樹脂層を形成するために従来から常用されているものである。本発明では、従来から常用されている第１のフッ素樹脂粒子に、さらに、メルトフローレートの高い第２のフッ素樹脂粒子を配合し、さらに後述する充填剤を配合することにより、上記本発明の目的を達成するものである。第２のフッ素樹脂粒子のメルトフローレートが１０g/分未満である場合には、焼成後のフッ素樹脂層にクラックが発生しやすい。また、第２のフッ素樹脂粒子のメルトフローレートが２２g/分を超えると、焼成後のフッ素樹脂層の耐摩耗性が不十分である。なお、第１及び第２のフッ素樹脂は、それぞれ１種類のフッ素樹脂粒子であってもよいし、メルトフローレートがそれぞれ上記範囲内に入る２種類以上のフッ素樹脂粒子を組み合わせて用いてもよい。 As described above, the fluororesin coating material used in the present invention includes first fluororesin particles having a melt flow rate of 1 to 5 g / min and second fluororesin particles having a melt flow rate of 10 to 22 g / min. . The melt flow rate of the first fluororesin particles is preferably 2 to 4 g / min, and the melt flow rate of the second fluororesin is preferably 13 to 20 g / min. The first fluororesin particles having a melt flow rate of 1 to 5 g / min are conventionally used for forming the outermost fluororesin layer in the fixing rotating body. In the present invention, the second fluororesin particles having a high melt flow rate are further blended with the first fluororesin particles that are conventionally used, and the filler described later is further blended. It achieves its purpose. When the melt flow rate of the second fluororesin particles is less than 10 g / min, cracks are likely to occur in the fired fluororesin layer. Moreover, when the melt flow rate of the second fluororesin particles exceeds 22 g / min, the abrasion resistance of the fired fluororesin layer is insufficient. Each of the first and second fluororesins may be one type of fluororesin particle, or a combination of two or more types of fluororesin particles whose melt flow rate falls within the above range. .
第２のフッ素樹脂粒子の含量は、第１及び第２のフッ素樹脂粒子の合計量の１０〜５５重量％であり、好ましくは２０〜５０重量％である。第２のフッ素樹脂粒子の含量が、第１及び第２のフッ素樹脂粒子の合計量の１０重量％未満である場合には、焼成後のフッ素樹脂層にクラックが発生しやすい。また、第２のフッ素樹脂粒子の含量が５５重量％を超えると焼成後のフッ素樹脂層の耐摩耗性が不十分である。 The content of the second fluororesin particles is 10 to 55% by weight, preferably 20 to 50% by weight, based on the total amount of the first and second fluororesin particles. When the content of the second fluororesin particles is less than 10% by weight of the total amount of the first and second fluororesin particles, cracks are likely to occur in the fired fluororesin layer. Further, if the content of the second fluororesin particles exceeds 55% by weight, the abrasion resistance of the fired fluororesin layer is insufficient.
第１及び第２のフッ素樹脂粒子の平均粒径は特に限定されず、通常、両者とも平均粒径は0.1〜２０μm程度である。 The average particle diameter of the first and second fluororesin particles is not particularly limited, and usually the average particle diameter of both is about 0.1 to 20 μm.
本発明に用いられるフッ素樹脂塗料は、さらに充填剤を含む。充填剤の材質としては、ガラスが好ましい。充填剤の含量は、第１及び第２のフッ素樹脂粒子の合計量の0.5〜３０重量％であり、１〜２０重量％が好ましい。充填剤の含量が0.5重量％未満の場合には、焼成後のフッ素樹脂層の耐摩耗性が不十分である。３０重量％を超えると焼成後のフッ素樹脂層にクラックが発生しやすい。充填剤は、粒子状であり、その平均粒径は、特に限定されないが、通常、２〜１０μｍ程度である。 The fluororesin paint used in the present invention further contains a filler. As a material of the filler, glass is preferable. The content of the filler is 0.5 to 30% by weight, preferably 1 to 20% by weight, based on the total amount of the first and second fluororesin particles. When the filler content is less than 0.5% by weight, the abrasion resistance of the fired fluororesin layer is insufficient. If it exceeds 30% by weight, cracks are likely to occur in the fired fluororesin layer. The filler is particulate, and the average particle diameter is not particularly limited, but is usually about 2 to 10 μm.
本発明に用いるフッ素樹脂塗料中のフッ素樹脂は、特に限定されるものではなく、従来から定着用回転体の表面に被膜を形成するために用いられているいずれのフッ素樹脂であってもよく、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(PFA)を好ましく用いることができる。もっとも、フッ素樹脂はPFAに限定されるものではない。 The fluororesin in the fluororesin paint used in the present invention is not particularly limited, and may be any fluororesin that has been conventionally used for forming a film on the surface of a fixing rotating body, Tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA) can be preferably used. However, the fluororesin is not limited to PFA.
本発明に用いる塗料中の第１及び第２のフッ素樹脂粒子の合計含有量は、従来の塗料と同程度でよく、通常、１０重量％〜６０重量％である。また、塗料の媒体としては、特に限定されず、通常、水が用いられる。塗料は、通常、上記各粒子を含む分散液の形態にある。塗料は、通常、上記媒体及び各粒子の他に、常用されているフッ素樹脂塗料と同様、分散剤や安定剤等の添加剤を含んでいてもよい。 The total content of the first and second fluororesin particles in the coating material used in the present invention may be the same as that of the conventional coating material, and is usually 10% to 60% by weight. The medium for the paint is not particularly limited, and water is usually used. The paint is usually in the form of a dispersion containing the particles. In addition to the above medium and each particle, the paint may usually contain additives such as a dispersant and a stabilizer, as in the case of commonly used fluororesin paints.
第１のフッ素樹脂粒子を含む塗料は広く市販されている。また、第２のフッ素樹脂粒子も市販されている。さらに、ガラス粒子等の充填剤粒子も広く市販されている。従って、本発明のフッ素樹脂粒子含有塗料は、常用されている市販のフッ素樹脂粒子（第１のフッ素樹脂粒子）含有塗料に、市販の第２のフッ素樹脂粒子及び充填剤粒子を添加することにより容易に調製することができる。すなわち、本発明に用いられる塗料は、市販品の混合により調製することができる。 The coating material containing the first fluororesin particles is widely marketed. Second fluororesin particles are also commercially available. Furthermore, filler particles such as glass particles are also widely available on the market. Accordingly, the fluororesin particle-containing paint of the present invention is obtained by adding commercially available second fluororesin particles and filler particles to a commonly used commercially available fluororesin particle (first fluororesin particle) -containing paint. It can be easily prepared. That is, the paint used in the present invention can be prepared by mixing commercially available products.
本発明において、「定着用回転体」とは、電子複写機やレーザービームプリンターの定着部に用いられている回転する部材を意味し、定着ロール及び加圧ロールのような定着用ロール並びに定着ベルトを意味する。これらのうち、加熱部材としての定着ロールや定着ベルトが好ましい。上記塗料を塗布、乾燥した場合、マッドクラックが公知の塗料よりも生じにくく、平滑なフッ素樹脂被膜が得られるので、本発明の定着用回転体は優れた性能を発揮する。 In the present invention, the “rotating body for fixing” means a rotating member used in a fixing unit of an electronic copying machine or a laser beam printer, and a fixing roll such as a fixing roll and a pressure roll, and a fixing belt. Means. Of these, a fixing roll or a fixing belt as a heating member is preferable. When the coating material is applied and dried, mud cracks are less likely to occur than known coating materials, and a smooth fluororesin film is obtained. Therefore, the fixing rotating body of the present invention exhibits excellent performance.
そして、定着用回転体の定着ロールは、芯金にプライマーを塗布し、その上に上記塗料を塗布し、乾燥し、焼成することにより製造することができる。塗料の塗布は、プライマーを塗布した芯金に塗料をスプレー塗装や浸漬すること等の常法により行うことができる。該塗料を塗布後、乾燥、焼成を行なう。乾燥条件は、特に限定されず、塗料媒体の種類等に応じて適宜設定されるが、通常、８０℃〜１２０℃で１５分〜１時間程度でよい。また、焼成は、フッ素樹脂の種類等に応じて適宜設定されるが、通常、３２０℃〜４２０℃程度で、２０分〜９０分程度である。なお、被膜の膜厚は、特に限定されないが、焼成後の膜厚で通常、３０μｍ以下、好ましくは２０μｍ以下である。被膜の膜厚の下限は、特に限定されないが、通常、５μm程度である。５μｍ以下の場合、耐久性が十分でない恐れがある。更に、必要に応じて芯金とフッ素樹脂皮膜の間にシリコーンゴムなどからなる中間層を設けることが出来る。 The fixing roll of the fixing rotating body can be manufactured by applying a primer to a metal core, applying the coating material thereon, drying, and baking. The coating can be applied by a conventional method such as spray coating or dipping the core on the primer. After applying the paint, drying and baking are performed. The drying conditions are not particularly limited, and are appropriately set according to the type of the coating medium, etc., but are usually 80 ° C. to 120 ° C. and about 15 minutes to 1 hour. Moreover, although baking is suitably set according to the kind etc. of fluororesin, it is about 320 to 420 degreeC normally, and is about 20 to 90 minutes. The film thickness of the coating is not particularly limited, but is usually 30 μm or less, preferably 20 μm or less in terms of the film thickness after firing. Although the minimum of the film thickness of a film is not specifically limited, Usually, it is about 5 micrometers. If it is 5 μm or less, the durability may not be sufficient. Furthermore, an intermediate layer made of silicone rubber or the like can be provided between the cored bar and the fluororesin film as necessary.
また、定着ベルトは、樹脂又は金属のベルト基体にプライマーを塗布し、上記塗料を塗布し、乾燥し、焼成することにより製造することができる。そして、定着ロールと同様に、必要に応じて上記ベルト基体とフッ素樹脂皮膜の間にシリコーンゴムなどからなる中間層を設けることが出来る。 The fixing belt can be manufactured by applying a primer to a resin or metal belt base, applying the paint, drying, and baking. As in the case of the fixing roll, an intermediate layer made of silicone rubber or the like can be provided between the belt base and the fluororesin film as necessary.
上記の方法により製造した、フッ素樹脂被膜で被覆された回転体は、焼成後のクラックが抑制され、平滑なものであり、焼成後のフッ素樹脂層の耐摩耗性も優れている。従って、定着強度が高く、優れた印刷性能が発揮される。また、このフッ素樹脂皮膜表面を研磨等により、所定の表面粗さに調整することもできる。 The rotating body produced by the above method and coated with a fluororesin coating is smooth, with no cracks after firing, and the wear resistance of the fired fluororesin layer is excellent. Therefore, the fixing strength is high and excellent printing performance is exhibited. Further, the surface of the fluororesin film can be adjusted to a predetermined surface roughness by polishing or the like.
以下、本発明を定着ロールを用いて本実施例に基づきより具体的に説明する。もっとも、本発明は下記実施例に限定されるものではない。 Hereinafter, the present invention will be described more specifically based on the present embodiment using a fixing roll. However, the present invention is not limited to the following examples.
実施例１〜５、比較例１〜５
(1) PFA樹脂粒子含有塗料の調製
市販のPFA塗料（三井デュポンフロロケミカル社製EN-513GL)からPFA粒子を除いた組成の溶液を調製し、これにメルトフローレートが３g/分のPFA粒子（三井デュポンフロロケミカル社製350J、平均粒径１μｍ以下) （以下、「MFR3」と略記することがある）及びメルトフローレートが１３g/分のPFA粒子（三井デュポンフロロケミカル社製MP-102、平均粒径約７μｍ以下)（以下、「MFR13」と略記することがある）及び充填剤としてのガラス粒子（龍森社製、平均粒径約５μｍ）を添加してフッ素樹脂塗料を調製した。フッ素樹脂塗料中のフッ素樹脂粒子の合計含量は３５重量％であり、ガラス粒子の含量はフッ素樹脂粒子の合計含量を基準として５重量％であった。全フッ素樹脂粒子中のMFR13のPFA粒子の含量は下記表１に示す通りであった。
Examples 1-5, Comparative Examples 1-5
(1) Preparation of paint containing PFA resin particles Prepare a solution with the composition excluding PFA particles from commercially available PFA paint (EN-513GL manufactured by Mitsui DuPont Fluorochemical Co., Ltd.), and add PFA particles with a melt flow rate of 3 g / min. (Mitsui DuPont Fluorochemical 350J, average particle size of 1 μm or less) (hereinafter sometimes abbreviated as “MFR3”) and PFA particles having a melt flow rate of 13 g / min (Mitsui Dupont Fluorochemical MP-102, An average particle size of about 7 μm or less (hereinafter sometimes abbreviated as “MFR13”) and glass particles as filler (manufactured by Tatsumori, average particle size of about 5 μm) were added to prepare a fluororesin coating material. The total content of fluororesin particles in the fluororesin coating was 35% by weight, and the content of glass particles was 5% by weight based on the total content of fluororesin particles. The content of PFA particles of MFR13 in all the fluororesin particles is as shown in Table 1 below.
(2) 定着ロールの作製
芯金（コニカミノルタテクノロジーズ社製プリンターDi250機用の芯金、直径30mm、長さ320mm)にプライマー（三井デュポンフロロケミカル社製PRM-049)をコーティング後、上記(1)で調製した塗料を厚さ２０μｍとなるようにスプレーコーティングし、１００℃に設定した電気炉内で３０分間乾燥し、４００℃に設定した電気炉内で６０分間焼成し、最外層にフッ素樹脂層を有する定着ロールを作製した。
(2) Preparation of Fixing Roll After coating the core (core metal for printer Di250 manufactured by Konica Minolta Technologies, diameter 30 mm, length 320 mm) with primer (PRM-049, Mitsui DuPont Fluorochemical), the above (1 ) Is spray coated to a thickness of 20 μm, dried in an electric furnace set at 100 ° C. for 30 minutes, baked in an electric furnace set at 400 ° C. for 60 minutes, and the outermost layer is a fluororesin A fixing roll having a layer was prepared.
(3) PFA樹脂層の表面状態の評価
作製した定着ロールのフッ素樹脂層の表面状態を目視により評価した。評価基準は次の通りであった。
◎：乾燥塗膜のクラックはあるが焼成後に十分にメルティングして完全に補修され、クラックなし。
○：乾燥塗膜のクラックはあるが焼成後にほぼメルティングし、若干のクラックはあるが使用上問題なし
△：焼成後の表面の平滑性が不十分であるが使用可能
×：乾燥、焼成後の塗膜にクラック発生
(3) Evaluation of surface state of PFA resin layer The surface state of the fluororesin layer of the prepared fixing roll was visually evaluated. The evaluation criteria were as follows.
A: There was a crack in the dried coating film, but it was fully repaired by melting after firing and completely repaired, and there was no crack.
○: Although there is a crack in the dried coating film, it is almost melted after firing, and there are some cracks, but there is no problem in use. Cracks in the paint film
(4) 耐摩耗性の評価
作製した定着ロールを、空回転加速試験機（ミノルタ社製Di250機の定着部を利用したもの）に実装し、空回転を行い、分離爪による爪傷の深さを測定することにより耐磨耗性を評価した。試験温度は２００℃、回転速度は180mm/秒、試験時間は２０時間であった。この条件で空回転を行い、終了後、３箇所の分離爪部の磨耗による凹み量を表面粗さ計（東京精密社製サーフコム1400D)にて測定した。その平均値（μm）を下記表１に記載した。表１中の評価基準は次の通りである。
○：凹み量が３箇所の平均で１μｍ未満
×：凹み量が３箇所の平均で１μｍ以上
なお、表１中、「−」は表面状態が悪く試験しなかったものである。
(4) Evaluation of wear resistance The prepared fixing roll is mounted on an idling acceleration tester (using the fixing part of Minolta's Di250 machine), idling, and the depth of claw scratches caused by the separation claw The wear resistance was evaluated by measuring. The test temperature was 200 ° C., the rotation speed was 180 mm / second, and the test time was 20 hours. After idling under these conditions, the amount of dents due to abrasion of the three separation claws was measured with a surface roughness meter (Surfcom 1400D manufactured by Tokyo Seimitsu Co., Ltd.). The average value (μm) is shown in Table 1 below. The evaluation criteria in Table 1 are as follows.
○: The average amount of dents is less than 1 μm at an average of three locations. X: The average amount of dents is 1 μm or more at three locations.
表１に示されるように、本発明の定着ロールでは、良好な表面状態と優れた耐磨耗性の両者を完備するものであった。これに対し、第２のフッ素樹脂粒子の含量が本発明で規定する範囲よりも少ない比較例１〜３では、焼成後のフッ素樹脂層にクラックが発生し、第２のフッ素樹脂粒子の含量が本発明で規定する範囲よりも多い比較例４、５では、耐磨耗性が劣っていた。 As shown in Table 1, the fixing roll of the present invention has both a good surface state and excellent wear resistance. On the other hand, in Comparative Examples 1 to 3, where the content of the second fluororesin particles is smaller than the range defined in the present invention, cracks occur in the fired fluororesin layer, and the content of the second fluororesin particles is In Comparative Examples 4 and 5, which are more than the range specified in the present invention, the wear resistance was inferior.
実施例６〜１０、比較例６〜９
全PFA粒子中のMFR3の含量を６０重量％とし、下記表２に示すメルトフローレート(MFR)を有する第２のPFA粒子を４０重量％配合したことを除き実施例１〜５と同様の操作を行い定着ロールを作製し、上記方法により表面状態及び耐磨耗性を試験した。結果を表２に示す。
Examples 6-10, Comparative Examples 6-9
The same operation as in Examples 1 to 5 except that the content of MFR3 in all the PFA particles was 60% by weight and 40% by weight of the second PFA particles having the melt flow rate (MFR) shown in Table 2 below were blended. Then, a fixing roll was prepared, and the surface condition and abrasion resistance were tested by the above method. The results are shown in Table 2.
表２に示されるように、本発明の定着ロールでは、良好な表面状態と優れた耐磨耗性の両者を完備するものであった。これに対し、第２のフッ素樹脂粒子のメルトフローレートが本発明で規定する範囲よりも小さい比較例６〜８では、焼成後のフッ素樹脂層にクラックが発生し、第２のフッ素樹脂粒子のメルトフローレートが本発明で規定する範囲よりも大きい比較例９では、耐磨耗性が劣っていた。 As shown in Table 2, the fixing roll of the present invention has both a good surface state and excellent wear resistance. On the other hand, in Comparative Examples 6 to 8 where the melt flow rate of the second fluororesin particles is smaller than the range defined in the present invention, cracks occur in the fired fluororesin layer, and the second fluororesin particles In Comparative Example 9 where the melt flow rate was larger than the range specified in the present invention, the wear resistance was inferior.
実施例１１〜１６、比較例１０〜１２
全PFA粒子中のMFR3の含量を６０重量％とし、MFR13を４０重量％配合し、ガラス粒子を下記表３に示す量（全PFA粒子に対する重量％）配合したことを除き実施例１〜５と同様の操作を行い定着ロールを作製し、上記方法により表面状態及び耐磨耗性を試験した。結果を表３に示す。
Examples 11-16, Comparative Examples 10-12
Examples 1 to 5 except that the content of MFR3 in all PFA particles was 60% by weight, 40% by weight of MFR13 was blended, and the amount of glass particles was blended in the amount shown in Table 3 below (% by weight with respect to all PFA particles). The same operation was performed to prepare a fixing roll, and the surface condition and abrasion resistance were tested by the above method. The results are shown in Table 3.
表３に示されるように、本発明の定着ロールでは、良好な表面状態と優れた耐磨耗性の両者を完備するものであった。これに対し、充填剤を含まない比較例１０では、耐磨耗性が劣り、一方、充填剤の含量が本発明で規定する範囲を超えている比較例１１及び比較例１２では、焼成後のフッ素樹脂層にクラックが発生した。
As shown in Table 3, the fixing roll of the present invention has both a good surface state and excellent wear resistance. On the other hand, in Comparative Example 10 containing no filler, the abrasion resistance is inferior, whereas in Comparative Example 11 and Comparative Example 12 in which the content of the filler exceeds the range specified in the present invention, after firing. Cracks occurred in the fluororesin layer.
Claims (10)
The method according to claim 6, wherein the fixing rotator is a fixing roll.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010211209A (en) * | 2009-03-11 | 2010-09-24 | Xerox Corp | Self-releasing nanoparticle filler in fusing member |
| JP2013185015A (en) * | 2012-03-06 | 2013-09-19 | Gunze Ltd | Resin composite composition |
| JP2014222327A (en) * | 2013-05-14 | 2014-11-27 | 富士ゼロックス株式会社 | Fixing belt, fixing device, and image forming apparatus |
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|---|---|---|---|---|
| JP2001183935A (en) * | 1999-12-27 | 2001-07-06 | Nitto Kogyo Co Ltd | Roll for fixation |
| JP2005037829A (en) * | 2003-07-18 | 2005-02-10 | Fuji Xerox Co Ltd | Circulation body and fixing device |
| JP2005301199A (en) * | 2004-03-19 | 2005-10-27 | Ricoh Co Ltd | Fixing member, fixing apparatus using the fixing member and image forming apparatus |
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2006
- 2006-07-31 JP JP2006207627A patent/JP5080037B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001183935A (en) * | 1999-12-27 | 2001-07-06 | Nitto Kogyo Co Ltd | Roll for fixation |
| JP2005037829A (en) * | 2003-07-18 | 2005-02-10 | Fuji Xerox Co Ltd | Circulation body and fixing device |
| JP2005301199A (en) * | 2004-03-19 | 2005-10-27 | Ricoh Co Ltd | Fixing member, fixing apparatus using the fixing member and image forming apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010211209A (en) * | 2009-03-11 | 2010-09-24 | Xerox Corp | Self-releasing nanoparticle filler in fusing member |
| JP2013185015A (en) * | 2012-03-06 | 2013-09-19 | Gunze Ltd | Resin composite composition |
| JP2014222327A (en) * | 2013-05-14 | 2014-11-27 | 富士ゼロックス株式会社 | Fixing belt, fixing device, and image forming apparatus |
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