JP2013222200A - 表面コーティングおよび定着器部材 - Google Patents
表面コーティングおよび定着器部材 Download PDFInfo
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- JP2013222200A JP2013222200A JP2013077633A JP2013077633A JP2013222200A JP 2013222200 A JP2013222200 A JP 2013222200A JP 2013077633 A JP2013077633 A JP 2013077633A JP 2013077633 A JP2013077633 A JP 2013077633A JP 2013222200 A JP2013222200 A JP 2013222200A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
- G03G15/2057—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating relating to the chemical composition of the heat element and layers thereof
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- Engineering & Computer Science (AREA)
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- Fixing For Electrophotography (AREA)
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Abstract
【解決手段】表面コーティング組成物として、フッ素含有粒子と、エアロゲル粒子および正の摩擦帯電粒子とを含み、前記正の摩擦帯電粒子が、表面積が約30m2/g〜約400m2/gのフュームドアルミナ粒子を含み、前記正の摩擦帯電粒子の量が、粉末中の固形分全体の約0.1重量%〜約5重量%の範囲である。
【選択図】図6
Description
図1および図2の基板層110、210は、例えば、開示されている定着器部材向けにベルト、平板および/または円柱形のドラムの形態であってもよい。定着部材の基板は、高い強度と、定着温度で分解しないという物理特性を与え得る限り、制限はない。具体的には、基板は、金属(例えば、アルミニウムまたはステンレス鋼)または耐熱性樹脂のプラスチックから作ることができる。耐熱性樹脂の例としては、ポリイミド、芳香族ポリイミド、ポリエーテルイミド、ポリフタルアミド、ポリエステル、サーモトロピック液晶ポリマーのような液晶材料などが挙げられる。基板の厚みは、定着ベルトを繰り返し回転させることが可能な剛性および柔軟性を両方とも達成することができるような範囲内にあり、例えば、約10μm〜約200μm、または約30μm〜約100μmである。
機能性層120および220の例としては、フルオロシリコーン、シリコーンゴム、例えば、室温加硫(RTV)シリコーンゴム、高温加硫(HTV)シリコーンゴム、低温加硫(LTV)シリコーンゴムが挙げられる。これらのゴムは既知であり、商業的に簡単に入手可能であり、例えば、SILASTIC(登録商標)735ブラックRTVおよびSILASTIC(登録商標)732 RTV(いずれもDow Corning製)、106 RTV Silicone Rubberおよび90 RTV Silicone Rubber(いずれもGeneral Electric製)、JCR6115CLEAR HTVおよびSE4705U HTVシリコーンゴム(Dow Corning Toray Silicones製)である。他の適切なシリコーン材料としては、シロキサン(例えば、ポリジメチルシロキサン)、フルオロシリコーン(例えば、Silicone Rubber 552(Sampson Coating(リッチモンド、バージニア)から入手可能))、液体シリコーンゴム、例えば、ビニル架橋した熱硬化性ゴム、またはシラノールを室温で架橋した材料などが挙げられる。別の特定の例は、Dow Corning Sylgard 182である。市販のLSRゴムとしては、Dow Corning製のDow Corning Q3−6395、Q3−6396、SILASTIC(登録商標)590 LSR、SILASTIC(登録商標)591 LSR、SILASTIC(登録商標)595 LSR、SILASTIC(登録商標)596 LSR、SILASTIC(登録商標)598 LSRが挙げられる。機能性層は、弾力性を付与し、必要な場合には、例えば、SiCまたはAl2O3のような無機粒子と混合してもよい。
場合により、任意の既知の接着層および入手可能な適切な接着層(プライマー層と呼ばれることもある)が、剥離層130、230、中間層120、220、基板110、210の間に配置されていてもよい。適切な接着剤の例としては、アミノシランのようなシラン類(例えば、Dow Corning製のHV Primer 10)、チタネート、ジルコネート、アルミネートなど、およびこれらの混合物が挙げられる。一実施形態では、接着剤は、約0.001%溶液〜約10%溶液の形態で基板にワイピングによってのせられてもよい。場合により、任意の既知の接着層および入手可能な適切な接着層が、剥離層または外側表面と機能性層と基板との間に配置されてもよい。接着層は、約2nm〜約10,000nm、または約2nm〜約1000nm、または約2nm〜約5000nmの厚みで基板または剥離層にコーティングされてもよい。接着剤を、スプレーコーティングまたはワイピングを含む既知の任意の適切な技術によってコーティングしてもよい。
トップコートマトリックス中でエアロゲル粒子を含むフルオロプラスチックコーティングを使用し、定着器部材において光沢度が低い画像を得てきた。米国特許出願第13/053,418号は、このような剥離層を記載する。しかし、粉末フルオロプラスチック/エアロゲル混合物の処理は、依然として困難である。粉末コーティングは、定着器コーティングにとって望ましい処理方法であるが、フルオロプラスチックおよびエアロゲル粉末は、粉末コーティングプロセス中に分離する傾向があり、不完全な硬化および非均質な剥離層を生じる。粉末コーティングが硬化したトップコートの結合を促進しつつ、均質な粉末混合物を発見することが望ましい。
Claims (4)
- フッ素含有粒子、エアロゲル粒子および正の摩擦帯電粒子を含み、前記正の摩擦帯電粒子が、表面積が約30m2/g〜約400m2/gのフュームドアルミナ粒子を含み、前記正の摩擦帯電粒子の量が、粉末中の固形分全体の約0.1重量%〜約5重量%の範囲である、コーティング組成物。
- 定着器部材を製造する方法であって、
基材の上に配置された弾性層を備える定着器部材を得ることと、
請求項1に記載の組成物を含む粉末を弾性層の上にスプレーコーティングし、コーティングされた層を作成することと、
前記コーティングされた層を約260℃〜約380℃の温度まで加熱し、剥離層を作成することと、を含む、方法。 - 前記フッ素含有粒子が、ポリテトラフルオロエチレン、ペルフルオロアルコキシポリマー樹脂、テトラフルオロエチレンとヘキサフルオロプロピレンのコポリマー、ヘキサフルオロプロピレンとフッ化ビニリデンのコポリマー、テトラフルオロエチレンとフッ化ビニリデンとヘキサフルオロプロピレンのターポリマー、テトラフルオロエチレンとフッ化ビニリデンとヘキサフルオロプロピレンのテトラポリマー、およびこれらの混合物からなる群から選択される材料を含む、請求項2に記載の方法。
- 定着器部材であって、
基材と、
前記基材の上に配置された外側層とを備え、前記外側層が、エアロゲル粒子とフュームドアルミナ粒子が分散したフッ素含有マトリックスを含み、前記エアロゲル粒子が、約0.1重量%〜約10重量%含まれ、前記フュームドアルミナ粒子が、前記外側層の約0.1重量%〜約5重量%含まれ、前記定着器部材は、G75表面光沢が約5ggu〜約70gguの範囲である、定着器部材。
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