JP2007292849A - Fixing belt and method for producing same - Google Patents
Fixing belt and method for producing same Download PDFInfo
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- JP2007292849A JP2007292849A JP2006117925A JP2006117925A JP2007292849A JP 2007292849 A JP2007292849 A JP 2007292849A JP 2006117925 A JP2006117925 A JP 2006117925A JP 2006117925 A JP2006117925 A JP 2006117925A JP 2007292849 A JP2007292849 A JP 2007292849A
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- fixing belt
- polyimide
- polyimide film
- polyimide precursor
- precursor solution
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 229920001721 polyimide Polymers 0.000 claims abstract description 93
- 239000004642 Polyimide Substances 0.000 claims abstract description 58
- 239000002243 precursor Substances 0.000 claims abstract description 38
- 239000002904 solvent Substances 0.000 claims abstract description 29
- 150000001408 amides Chemical class 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000009835 boiling Methods 0.000 claims abstract description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 8
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical group CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical group COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 claims description 4
- 230000006866 deterioration Effects 0.000 abstract description 3
- 238000006358 imidation reaction Methods 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 239000004210 ether based solvent Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 31
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 6
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 5
- 125000003118 aryl group Chemical group 0.000 description 5
- 229920005575 poly(amic acid) Polymers 0.000 description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 229920001519 homopolymer Polymers 0.000 description 3
- 239000012046 mixed solvent Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 239000009719 polyimide resin Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 125000006158 tetracarboxylic acid group Chemical group 0.000 description 3
- 239000002966 varnish Substances 0.000 description 3
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001973 fluoroelastomer Polymers 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- YPUWDDMFYRNEFX-UHFFFAOYSA-N 1-methoxy-2-[2-(2-methoxyethoxy)ethoxy]ethane Chemical compound COCCOCCOCCOC.COCCOCCOCCOC YPUWDDMFYRNEFX-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000004984 aromatic diamines Chemical class 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 150000003949 imides Chemical group 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
本発明は、電子写真方式の画像形成装置において転写紙への画像定着に用いる定着ベルト及びその製造方法に関する。 The present invention relates to a fixing belt used for fixing an image onto a transfer sheet in an electrophotographic image forming apparatus and a method for manufacturing the same.
従来、電子写真方式の画像形成装置における転写紙への画像定着法として、ベルト定着方式が知られている。ベルト定着方式に用いる定着ベルトとしては、耐熱性や機械強度に優れたポリイミド樹脂からなる単層のベルト、あるいはポリイミド樹脂内層とフッ素樹脂製外層からなる多層ベルトが知られているが、ポリイミド樹脂を用いたベルトはベルト全体としてのクッション性に劣るためトナー定着性が不十分となり、鮮明なトナー画像を得難いという問題があった。 そこで、ポリイミド樹脂製ベルトの外周面に、シリコーンゴム又はフッ素ゴム製外層を設けた多層定着ベルトが提案されている（特許文献１〜４）。
しかし、これらの複合管状体では、ベルト表面のクッション性が向上してトナー定着性が良好になるものの、使用しているシリコーンゴム又はフッ素ゴムの耐熱性が充分ではないため、長期間定着ベルトとして使用した場合にシリコーンゴム又はフッ素ゴムの熱劣化が起こり、トナー定着性が低下するという問題があった。 However, in these composite tubular bodies, although the cushioning property of the belt surface is improved and the toner fixing property is improved, the heat resistance of the silicone rubber or fluororubber used is not sufficient, so that it can be used as a fixing belt for a long time. When used, there is a problem that the silicone rubber or fluororubber is thermally deteriorated and the toner fixing property is lowered.
そこで、本発明の目的は、良好なトナー定着性を確保しつつ、長期間使用しても、熱劣化等によるトナー定着性の低下が起こらない定着ベルトを提供することにある。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fixing belt that ensures good toner fixability and does not cause a decrease in toner fixability due to thermal degradation or the like even when used for a long period of time.
本発明者らは、上記目的を達成すべく、鋭意研究したところ、意外にもポリイミドフィルムからなるベルトの少なくとも一方の面に多孔質ポリイミドフィルム層を設けることにより上記課題が解決されることを見出し、本発明を完成するに至った。すなわち、本発明の要旨は、第一に、多孔質ポリイミドフィルム層と、この層の少なくとも一方の面に積層一体化されたポリイミドフィルム層とを備えた定着ベルトである。第二に、エーテル系溶媒とこのエーテル系溶媒より低沸点のアミド系溶媒とを含有するポリイミド前駆体溶液を基材上に塗工し、加熱乾燥・イミド化させる工程を含むことを特徴とする前記定着ベルトの製造方法である。第三に、エーテル系溶媒がトリグライムであり、アミド系溶媒がジメチルアセトアミドであることを特徴とする前記定着ベルトの製造方法である。 The present inventors have intensively studied to achieve the above object, and surprisingly found that the above problems can be solved by providing a porous polyimide film layer on at least one surface of a belt made of a polyimide film. The present invention has been completed. That is, the gist of the present invention is, firstly, a fixing belt including a porous polyimide film layer and a polyimide film layer laminated and integrated on at least one surface of this layer. Secondly, it comprises a step of coating a polyimide precursor solution containing an ether solvent and an amide solvent having a boiling point lower than that of the ether solvent on a substrate, followed by heat drying and imidization. A method for manufacturing the fixing belt. Third, the method for producing the fixing belt is characterized in that the ether solvent is triglyme and the amide solvent is dimethylacetamide.
本発明の定着ベルトによると、多孔質ポリイミドフィルム層とポリイミドフィルム層とを積層一体化することで、耐熱性とクッション性に優れるため、良好なトナー定着性が確保されるとともに、長期間使用しても、熱劣化等によるトナー定着性の低下が起こらないという利点を有している。 According to the fixing belt of the present invention, since the porous polyimide film layer and the polyimide film layer are laminated and integrated, excellent heat resistance and cushioning properties are ensured. However, there is an advantage that the toner fixing property does not deteriorate due to thermal deterioration or the like.
以下、本発明について詳細に説明する。 Hereinafter, the present invention will be described in detail.
〔ポリイミド〕
本発明において、ポリイミドとは、構造式（１）で示される繰返し単位を有するホモポリマーまたはコポリマーをいう。これらのポリイミドの中で、ＤＳＣ測定によるガラス転移点が２５０℃以上のポリイミドが好ましく、ガラス転移点が３５０℃以上のポリイミドがより好ましく用いられる。
[Polyimide]
In the present invention, polyimide refers to a homopolymer or copolymer having a repeating unit represented by the structural formula (1). Among these polyimides, a polyimide having a glass transition point by DSC measurement of 250 ° C. or higher is preferable, and a polyimide having a glass transition point of 350 ° C. or higher is more preferably used.
ここで、Ｒは４価の芳香族残基から選ばれる基を示し、好ましくは下記に示した構造式から選ばれる。 Here, R represents a group selected from tetravalent aromatic residues, and is preferably selected from the structural formulas shown below.
また、Ｒ’は１〜４個の炭素６員環を有する２価の芳香族残基を示す。Ｒ’としては次のようなものが例示される。 R 'represents a divalent aromatic residue having 1 to 4 carbon 6-membered rings. Examples of R 'are as follows.
〔ポリイミドフィルム〕
本発明において、ポリイミドフィルムとは上記ポリイミドからなる無孔フィルムをいい、このフィルム断面には口径１μｍ以上の気孔が存在しないものである。
[Polyimide film]
In the present invention, the polyimide film refers to a non-porous film made of the polyimide, and the cross section of the film does not have pores having a diameter of 1 μm or more.
〔多孔質ポリイミドフィルム〕
本発明の多孔質ポリイミドフィルムとは、上記ポリイミドからなり、フィルム断面には口径１μｍ以上の気孔が多数存在するフィルムを言う。
[Porous polyimide film]
The porous polyimide film of the present invention refers to a film made of the above polyimide and having a large number of pores having a diameter of 1 μm or more in the film cross section.
〔ポリイミド前駆体溶液〕
本発明のポリイミド前駆体溶液は、閉環して（すなわち、イミド環構造が得られて）ポリイミドとなる有機ポリマーであるポリイミド前駆体と、このポリイミド前駆体を溶解させる溶媒とからなる。
[Polyimide precursor solution]
The polyimide precursor solution of the present invention comprises a polyimide precursor that is an organic polymer that is ring-closed (that is, an imide ring structure is obtained) to become a polyimide, and a solvent that dissolves the polyimide precursor.
〔ポリイミド前駆体〕
本発明におけるポリイミド前駆体とは、構造式（２）で示される繰返し単位を有するポリアミド酸のホモポリマーまたはコポリマー、または部分イミド化したポリアミド酸のホモポリマーまたはコポリマーである。
[Polyimide precursor]
The polyimide precursor in the present invention is a polyamic acid homopolymer or copolymer having a repeating unit represented by the structural formula (2), or a partially imidized polyamic acid homopolymer or copolymer.
ここで、Ｒは４価の芳香族残基から選ばれる基を示し、好ましくは下記に示した構造式から選ばれる。 Here, R represents a group selected from tetravalent aromatic residues, and is preferably selected from the structural formulas shown below.
また、Ｒ’は１〜４個の炭素６員環を有する２価の芳香族残基を示す。Ｒ’としては次のようなものが例示される。 R 'represents a divalent aromatic residue having 1 to 4 carbon 6-membered rings. Examples of R 'are as follows.
本発明においてポリイミドフィルム形成用のポリイミド前駆体溶液に使用される溶媒としてはアミド系溶媒が好ましい。 In the present invention, an amide solvent is preferred as the solvent used in the polyimide precursor solution for forming the polyimide film.
また多孔質ポリイミドフィルム形成用のポリイミド前駆体溶液に使用される溶媒としては、エーテル系溶媒とこのエーテル系より沸点が低いアミド系溶媒とを含有する混合溶媒が好ましく用いられる。アミド系溶媒の沸点がエーテル系溶媒の沸点よりも低くない場合には、十分に気孔率の高い多孔質ポリイミドフィルムを得ることができなかったり、気孔サイズに著しくムラが生じたりする場合がある。 Moreover, as a solvent used for the polyimide precursor solution for forming a porous polyimide film, a mixed solvent containing an ether solvent and an amide solvent having a boiling point lower than that of the ether solvent is preferably used. When the boiling point of the amide solvent is not lower than the boiling point of the ether solvent, a porous polyimide film having a sufficiently high porosity may not be obtained, or the pore size may be significantly uneven.
アミド系溶媒としては、例えば、Ｎ−メチル−２−ピロリドン（ＮＭＰ）、Ｎ，Ｎ−ジメチルホルムアミド（ＤＭＦ）、Ｎ，Ｎ−ジメチルアセトアミド（ＤＭＡｃ）等が好ましく用いられ、ＤＭＡｃがより好ましく用いられる。 As the amide solvent, for example, N-methyl-2-pyrrolidone (NMP), N, N-dimethylformamide (DMF), N, N-dimethylacetamide (DMAc) and the like are preferably used, and DMAc is more preferably used. .
また、エーテル系溶媒としては、例えば、ジエチレングリコール、ジエチレングリコールモノメチルエーテル、トリエチレングリコール、トリエチレングリコールモノメチルエーテル、トリエチレングリコールジメチルエーテル（トリグライム）等が好ましく用いられ、トリグライムがより好ましく用いられる
上記混合溶媒中のエーテル系溶媒は、混合溶媒の３５〜９５質量％の範囲が好ましい。より好ましくは４０〜９０質量％、さらに好ましくは４５〜８０質量％の範囲である。
As the ether solvent, for example, diethylene glycol, diethylene glycol monomethyl ether, triethylene glycol, triethylene glycol monomethyl ether, triethylene glycol dimethyl ether (triglyme) and the like are preferably used, and triglyme is more preferably used. The ether solvent is preferably in the range of 35 to 95% by mass of the mixed solvent. More preferably, it is 40-90 mass%, More preferably, it is the range of 45-80 mass%.
ポリイミド前駆体溶液におけるポリイミド前駆体の濃度は、１〜６０質量％が好ましく、３〜４５質量％がより好ましく、５〜４０質量％がさらに好ましい。 1-60 mass% is preferable, as for the density | concentration of the polyimide precursor in a polyimide precursor solution, 3-45 mass% is more preferable, and 5-40 mass% is more preferable.
ポリイミド前駆体溶液の３０℃における粘度は１〜３０Ｐａ・ｓの範囲が好ましく、２０〜２００Ｐａ・ｓがより好ましい。 The viscosity at 30 ° C. of the polyimide precursor solution is preferably in the range of 1 to 30 Pa · s, more preferably 20 to 200 Pa · s.
さらに、ポリイミド前駆体溶液には、必要に応じて例えば、各種界面活性剤、有機シラン、顔料、導電性のカーボンブラックおよび金属微粒子および耐熱性プラスチックのような充填材、摩擦調整材、誘電体、潤滑材等のほか、公知の添加物を本発明の効果を損なわない範囲で添加することができる。また、他の重合体が本発明の効果を損なわない範囲で添加されていてもよい。 Furthermore, the polyimide precursor solution may include, for example, various surfactants, organic silanes, pigments, conductive carbon black and fillers such as metal fine particles and heat resistant plastics, friction modifiers, dielectrics, In addition to the lubricant and the like, known additives can be added within a range that does not impair the effects of the present invention. Moreover, the other polymer may be added in the range which does not impair the effect of this invention.
ポリイミド前駆体溶液は、前記した溶媒中で、モノマーであるテトラカルボン酸二無水物とジアミンとを重合させることにより製造することができる。すなわち、前記Ｒを骨格とする芳香族系テトラカルボン酸二無水物および前記Ｒ’を骨格とする芳香族系ジアミンとを、前記溶媒中で重合反応させる。反応温度は、−３０〜１２０℃が好ましく、−２０〜８０℃がより好ましい。反応時間は、１〜４００分が好ましく、５〜２００分がより好ましい。モノマー濃度としては、１〜４０質量％が好ましく５〜３０質量％がより好ましい。テトラカルボン酸二無水物とジアミンの反応は等モルの比率で行うのが好ましいが、これらのモノマーの比率を若干変動させることにより、ポリアミド酸の重合度を任意に調節することができる。この重合反応によって、本発明に用いることのできる均一なポリイミド前駆体溶液が得られる。また、本発明においては、ポリイミド前駆体溶液として一般市販品を利用することもできる。 The polyimide precursor solution can be produced by polymerizing a tetracarboxylic dianhydride as a monomer and a diamine in the solvent described above. That is, the aromatic tetracarboxylic dianhydride having R as a skeleton and the aromatic diamine having R 'as a skeleton are polymerized in the solvent. The reaction temperature is preferably -30 to 120 ° C, more preferably -20 to 80 ° C. The reaction time is preferably 1 to 400 minutes, more preferably 5 to 200 minutes. The monomer concentration is preferably 1 to 40% by mass and more preferably 5 to 30% by mass. The reaction of tetracarboxylic dianhydride and diamine is preferably carried out at an equimolar ratio, but the degree of polymerization of the polyamic acid can be arbitrarily adjusted by slightly varying the ratio of these monomers. By this polymerization reaction, a uniform polyimide precursor solution that can be used in the present invention is obtained. Moreover, in this invention, a general commercial item can also be utilized as a polyimide precursor solution.
〔定着ベルト〕
前記ポリイミド前駆体溶液から、例えば以下の製膜方法によって本発明の定着ベルトを得ることができる。すなわち、ポリイミド前駆体溶液を円筒状金型表面に塗工し、１０〜２００℃で０．１〜４時間乾燥する。得られたポリイミド前駆体フィルム基材上に多孔質フィルム形成用のポリイミド前駆体溶液を同様に塗工し、複合層を形成させ、その後、これを２５０〜４００℃で０．５〜５時間加熱し、イミド化して多孔質ポリイミドフィルムとポリイミドフィルムとを積層一体化させる。しかる後、円筒状金型より被覆物を剥離することにより本発明の定着ベルトを得ることができる。
[Fixing belt]
From the polyimide precursor solution, for example, the fixing belt of the present invention can be obtained by the following film forming method. That is, the polyimide precursor solution is applied to the cylindrical mold surface and dried at 10 to 200 ° C. for 0.1 to 4 hours. A polyimide precursor solution for forming a porous film is similarly coated on the obtained polyimide precursor film substrate to form a composite layer, and then heated at 250 to 400 ° C. for 0.5 to 5 hours. Then, the porous polyimide film and the polyimide film are laminated and integrated by imidization. Thereafter, the fixing belt of the present invention can be obtained by peeling the coating from the cylindrical mold.
ポリイミド多孔質フィルムとポリイミドフィルムの化学構造は同一であっても異なっていてもよい。また、ポリイミド前駆体の積層順序は上記と逆でもよい。上記多孔質フィルム上にさらにポリイミドフィルム層を積層してもよい。 The chemical structure of the polyimide porous film and the polyimide film may be the same or different. Further, the order of lamination of the polyimide precursor may be reversed. A polyimide film layer may be further laminated on the porous film.
本発明において、乾燥条件等を選べば、多孔質フィルム形成用のポリイミド前駆体溶液のみを用い、この前駆体溶液を金型表面に塗工、乾燥、イミド化するだけで本発明の定着ベルトを得ることもできる。この場合、ポリイミド多孔質フィルムとポリイミドフィルムの化学構造は同一となる。 In the present invention, if drying conditions and the like are selected, only the polyimide precursor solution for forming the porous film is used, and this precursor solution is applied to the surface of the mold, dried and imidized to obtain the fixing belt of the present invention. It can also be obtained. In this case, the chemical structure of the polyimide porous film and the polyimide film is the same.
さらに、本発明においては、定着ベルトとしての離形性を向上させるために多孔質ポリイミドフィルムまたはポリイミドフィルムの表面にＰＴＦＥ、ＰＦＡ等のフッ素樹脂フィルムを積層することもできる。またはＰＴＦＥ,ＰＦＡ等のフッ素樹脂をコーティングすることも出来る。 Furthermore, in the present invention, a fluororesin film such as PTFE or PFA can be laminated on the surface of the porous polyimide film or polyimide film in order to improve the releasability as a fixing belt. Alternatively, a fluororesin such as PTFE or PFA can be coated.
本発明の定着ベルトにおいて、ポリイミドフィルム層の厚みは１〜２００μｍが好ましく、１０〜１００μｍがより好ましい。また、多孔質ポリイミドフィルム層の厚みは１０〜５００μｍが好ましく、２０〜２００μｍがより好ましい。 In the fixing belt of the present invention, the thickness of the polyimide film layer is preferably 1 to 200 μm, and more preferably 10 to 100 μm. Moreover, 10-500 micrometers is preferable and, as for the thickness of a porous polyimide film layer, 20-200 micrometers is more preferable.
また、多孔質ポリイミドフィルム層の気孔率は２０〜９０体積％が好ましく、４０〜８０体積％がより好ましい。 Moreover, 20 to 90 volume% is preferable and, as for the porosity of a porous polyimide film layer, 40 to 80 volume% is more preferable.
前記ポリイミドフィルム層の厚み、多孔質ポリイミドフィルム層の厚み、気孔率は、前記混合溶媒のアミド系溶媒とエーテル系溶媒の種類や比率、基材上への塗工膜厚、乾燥条件など、塗工条件を選ぶことにより調節することができる。 The thickness of the polyimide film layer, the thickness of the porous polyimide film layer, and the porosity are the types and ratios of the amide solvent and the ether solvent of the mixed solvent, the coating film thickness on the substrate, the drying conditions, etc. It can be adjusted by selecting the construction conditions.
以下、本発明を実施例により具体的に説明する。なお本発明は実施例により限定されるものではない。 Hereinafter, the present invention will be specifically described by way of examples. The present invention is not limited to the examples.
［実施例１］
円筒状金型にポリイミド前駆体溶液（ユニチカ社製ＵイミドワニスＹＤ Ａ−３０）を４００μｍの均一な厚みに塗工し、１００℃のオーブンの中で６０分保持し半乾燥させた。なお、このポリイミド前駆体溶液は溶媒としてジメチルアセトアミドを、ポリイミド前駆体としてビフェニルベンゼンテトラカルボン酸二無水物および４，４’−オキジアニリンとからなるポリアミック酸を含有するポリイミド前駆体溶液であり、ポリイミド前駆体濃度は３３質量％、３０℃での粘度は８０Ｐａ・ｓであった。
[Example 1]
A polyimide precursor solution (Uimide varnish YD A-30 manufactured by Unitika Ltd.) was applied to a cylindrical mold to a uniform thickness of 400 μm, held in an oven at 100 ° C. for 60 minutes, and semi-dried. This polyimide precursor solution is a polyimide precursor solution containing dimethylacetamide as a solvent and polyamic acid composed of biphenylbenzenetetracarboxylic dianhydride and 4,4′-oxydianiline as a polyimide precursor. The body concentration was 33% by mass, and the viscosity at 30 ° C. was 80 Pa · s.
次に、ポリイミド前駆体溶液（ユニチカ社製ＵイミドワニスＹＤ−ＣＦ１８）を半乾燥させたポリイミド前駆体膜の上に４００μｍの均一な厚みに塗工し、１００℃の乾燥機の中で１０分保持し半乾燥させた後、３５０℃まで６０分間で昇温し、同温度で３０分間保持させることでイミド化を行った。なお、このポリイミド前駆体溶液は溶媒としてＤＭＡｃとトリグライムを含み、ポリイミド前駆体としてビフェニルベンゼンテトラカルボン酸二無水物および４，４’−オキジアニリンとからなるポリアミック酸を含有するポリイミド前駆体溶液であり、ポリイミド前駆体濃度は２０質量％、３０℃での粘度は６５Ｐａ・ｓであった。 Next, a polyimide precursor solution (Uimide varnish YD-CF18 manufactured by Unitika Ltd.) was applied to a uniform thickness of 400 μm on the semi-dried polyimide precursor film and held in a dryer at 100 ° C. for 10 minutes. After semi-drying, the temperature was raised to 350 ° C. over 60 minutes, and imidation was carried out by holding at that temperature for 30 minutes. In addition, this polyimide precursor solution is a polyimide precursor solution containing polyamic acid comprising DMAc and triglyme as a solvent and biphenylbenzenetetracarboxylic dianhydride and 4,4′-oxydianiline as a polyimide precursor, The polyimide precursor concentration was 20 mass%, and the viscosity at 30 ° C. was 65 Pa · s.
室温まで自然冷却させた後、金型より脱型を行うことで、図１に示すようなポリイミド基材層（厚み：８０μｍ）と多孔質ポリイミド層（厚み：２００μｍ）とが積層一体化された総厚２８０μｍの定着ベルトを得た。 After naturally cooling to room temperature, the polyimide substrate layer (thickness: 80 μm) and the porous polyimide layer (thickness: 200 μm) as shown in FIG. 1 were laminated and integrated by removing from the mold. A fixing belt having a total thickness of 280 μm was obtained.
得られた定着ベルトを所定幅に切断して図３に示す画像定着装置の定着用ベルトとして用いたところ、良質な画像が得られた。そして、この装置を用い連続通紙試験行なったところ、５万枚通紙後でもベルトの蛇行等による走行不良は生じず、得られた画像は良質であった。 When the obtained fixing belt was cut into a predetermined width and used as a fixing belt of the image fixing apparatus shown in FIG. 3, a high-quality image was obtained. When this apparatus was used for a continuous paper passing test, no running failure due to the meandering of the belt occurred even after 50,000 sheets were passed, and the obtained image was of good quality.
［実施例２］
ポリイミド基材層及び多孔質ポリイミド層となるためのポリイミド前駆体溶液を塗工し１００℃にて１０分保持乾燥させるところまでは、実施例１と同様の操作をおこなって、半乾燥のポリイミド前駆体膜を得た。次にこの半乾燥状態にあるポリイミド前駆体膜上に、プライマーとしてフッ素樹脂系ディスパージョン（ダイキン工業株式会社製ＥＫ１９５９Ｓ−２０１）を浸漬塗工した後、１００℃の乾燥機中で１０分保持し乾燥させた後、３５０℃まで６０分間で昇温し、同温度にて３０分間保持させることでイミド化をおこなうとともに、プライマーの焼付けを行った。室温まで自然冷却させた後、脱型を行い、表層にプライマー層を有し、ポリイミド基材層と多孔質ポリイミド層とが積層一体化されたベルトを得た。
[Example 2]
The same operation as in Example 1 was performed until a polyimide precursor solution for forming a polyimide substrate layer and a porous polyimide layer was applied and held and dried at 100 ° C. for 10 minutes. A body membrane was obtained. Next, a fluororesin dispersion (EK1959S-201 manufactured by Daikin Industries, Ltd.) as a primer is dip coated on the polyimide precursor film in a semi-dry state, and then held in a dryer at 100 ° C. for 10 minutes. After drying, the temperature was raised to 350 ° C. over 60 minutes, and imidation was carried out by holding at that temperature for 30 minutes, and the primer was baked. After naturally cooling to room temperature, demolding was performed to obtain a belt having a primer layer on the surface layer, and a polyimide base layer and a porous polyimide layer laminated and integrated.
得られた定着ベルトを円筒状の金属パイプに嵌めて、その上にシームレスＰＦＡチューブを被覆した後、オーブン内にて３６０℃まで３時間で昇温を行い、３０分保持させることで、ポリイミドベルトとＰＦＡチューブを融着させて、図２に示すような、表面に離型層（２０μｍ）を有する、ポリイミド基材層（厚み：８０μｍ）と多孔質ポリイミド層（厚み：２００μｍ）とが積層一体化された総厚３００μｍの定着ベルトを得た。 The obtained fixing belt is fitted into a cylindrical metal pipe, and a seamless PFA tube is coated thereon, and then heated up to 360 ° C. in 3 hours in an oven and held for 30 minutes to obtain a polyimide belt. The PFA tube is fused, and a polyimide base layer (thickness: 80 μm) and a porous polyimide layer (thickness: 200 μm) having a release layer (20 μm) on the surface as shown in FIG. A fixed fixing belt having a total thickness of 300 μm was obtained.
得られた定着ベルトを実施例１と同様にして定着用ベルトとして使用したところ、オフセット性が良好で、得られた画像も良質であった。そして、この装置を用い連続通紙試験行なったところ、５万枚通紙後でもベルトの蛇行等による走行不良は生じず、得られた画像は良質であった。 When the obtained fixing belt was used as a fixing belt in the same manner as in Example 1, the offset property was good and the obtained image was good. When this apparatus was used for a continuous paper passing test, no running failure due to the meandering of the belt occurred even after 50,000 sheets were passed, and the obtained image was of good quality.
［比較例１］
円筒状金型にポリイミド前駆体溶液（ユニチカ社製ＵイミドワニスＹＤ Ａ−３０）を４００μｍの均一な厚みに塗工し、１００℃のオーブンの中で１０分保持し半乾燥させた後、３５０℃まで６０分間で昇温し、同温度で３０分間保持させることでイミド化を行った。得られたポリイミドフィルム層（厚み：８０μｍ）の外面に、ポリアミドイミド溶液（東洋紡製ＮＡＩ８０２０）をＮＭＰで希釈した溶液を塗工し、乾燥させた後（厚み：約５μｍ）、その上に、ＲＴＶシリコーン（信越シリコーン製ＫＥ１８３３）溶液を塗工、乾燥してシリコーン樹脂層（厚み：２１０μｍ）を形成させ、次いで脱型することにより、総厚３００μｍの定着ベルトを得た。
[Comparative Example 1]
A polyimide precursor solution (Uimide varnish YD A-30 manufactured by Unitika Co., Ltd.) was applied to a cylindrical mold to a uniform thickness of 400 μm, held in an oven at 100 ° C. for 10 minutes and semi-dried, and then 350 ° C. The mixture was heated up to 60 minutes and then kept at the same temperature for 30 minutes to perform imidization. On the outer surface of the obtained polyimide film layer (thickness: 80 μm), a solution obtained by diluting a polyamideimide solution (NAI8020 manufactured by Toyobo Co., Ltd.) with NMP was applied and dried (thickness: about 5 μm). A silicone resin (KE1833 made by Shin-Etsu Silicone) solution was applied and dried to form a silicone resin layer (thickness: 210 μm), and then demolded to obtain a fixing belt having a total thickness of 300 μm.
得られた定着ベルトを実施例１と同様にして定着用ベルトとして用いたところ、良質な画像が得られた。しかし、この装置を用い連続通紙試験行なったところ、３万枚通紙した時点でベルトの劣化により蛇行による走行不良が発生し，得られた画像にも濃淡が発生した。 When the obtained fixing belt was used as a fixing belt in the same manner as in Example 1, a good image was obtained. However, when a continuous paper feeding test was performed using this apparatus, running failure due to meandering occurred due to belt deterioration when 30,000 sheets were passed, and shading occurred in the obtained image.
１：ポリイミド基材層
２：多孔質ポリイミド層
３：離型層
４：ヒータ
５：トナー（未定着）
６：画像
７,８：ローラ
９：転写紙
１０：定着ベルト
１１：加圧ローラ
1: Polyimide substrate layer 2: Porous polyimide layer 3: Release layer 4: Heater 5: Toner (unfixed)
6: Images 7, 8: Roller 9: Transfer paper 10: Fixing belt 11: Pressure roller
Claims (3)
The method for producing a fixing belt according to claim 2, wherein the ether solvent is triglyme and the amide solvent is dimethylacetamide.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010137728A1 (en) * | 2009-05-28 | 2010-12-02 | キヤノン株式会社 | Resin composition, laminate film comprising same, and image forming device using the laminate film as part thereof |
| JP4844700B1 (en) * | 2011-08-16 | 2011-12-28 | 富士ゼロックス株式会社 | Manufacturing method of endless belt |
| US8460784B2 (en) | 2009-07-24 | 2013-06-11 | Day International, Inc. | Digital image transfer belt and method of making |
| US9657153B2 (en) | 2009-05-28 | 2017-05-23 | Canon Kabushiki Kaisha | Method for producing a resin composition having a porous structure with independent porosities |
| JP2017173422A (en) * | 2016-03-22 | 2017-09-28 | ユニチカ株式会社 | Polyimide solution for fixing belt, method for manufacturing fixing belt, and fixing belt |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002126479A (en) * | 2000-10-26 | 2002-05-08 | Nitto Denko Corp | Porous membrane, gas separating membrane and method of manufacturing for the same |
| JP2003089166A (en) * | 2001-09-18 | 2003-03-25 | Fuji Xerox Co Ltd | Resin composition, its production method, and fixing member for electrophotography |
| JP2005274888A (en) * | 2004-03-24 | 2005-10-06 | Fuji Xerox Co Ltd | Fixing apparatus, belt and image forming apparatus |
| JP2005316288A (en) * | 2004-04-30 | 2005-11-10 | Ricoh Co Ltd | Heating device, fixing device and image forming apparatus |
-
2006
- 2006-04-21 JP JP2006117925A patent/JP5191634B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002126479A (en) * | 2000-10-26 | 2002-05-08 | Nitto Denko Corp | Porous membrane, gas separating membrane and method of manufacturing for the same |
| JP2003089166A (en) * | 2001-09-18 | 2003-03-25 | Fuji Xerox Co Ltd | Resin composition, its production method, and fixing member for electrophotography |
| JP2005274888A (en) * | 2004-03-24 | 2005-10-06 | Fuji Xerox Co Ltd | Fixing apparatus, belt and image forming apparatus |
| JP2005316288A (en) * | 2004-04-30 | 2005-11-10 | Ricoh Co Ltd | Heating device, fixing device and image forming apparatus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010137728A1 (en) * | 2009-05-28 | 2010-12-02 | キヤノン株式会社 | Resin composition, laminate film comprising same, and image forming device using the laminate film as part thereof |
| JP5588434B2 (en) * | 2009-05-28 | 2014-09-10 | キヤノン株式会社 | Resin composition, laminated film including the same, and image forming apparatus using the laminated film for a part |
| US9657153B2 (en) | 2009-05-28 | 2017-05-23 | Canon Kabushiki Kaisha | Method for producing a resin composition having a porous structure with independent porosities |
| US8460784B2 (en) | 2009-07-24 | 2013-06-11 | Day International, Inc. | Digital image transfer belt and method of making |
| JP4844700B1 (en) * | 2011-08-16 | 2011-12-28 | 富士ゼロックス株式会社 | Manufacturing method of endless belt |
| JP2017173422A (en) * | 2016-03-22 | 2017-09-28 | ユニチカ株式会社 | Polyimide solution for fixing belt, method for manufacturing fixing belt, and fixing belt |
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