JP2014091121A - 粉末コーティング方法および粉末コーティングされた定着器部材 - Google Patents
粉末コーティング方法および粉末コーティングされた定着器部材 Download PDFInfo
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- JP2014091121A JP2014091121A JP2013215955A JP2013215955A JP2014091121A JP 2014091121 A JP2014091121 A JP 2014091121A JP 2013215955 A JP2013215955 A JP 2013215955A JP 2013215955 A JP2013215955 A JP 2013215955A JP 2014091121 A JP2014091121 A JP 2014091121A
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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- B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/34—Applying different liquids or other fluent materials simultaneously
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
- B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249971—Preformed hollow element-containing
Abstract
【解決手段】静電ガンによって基材に粉末コーティング組成物を塗布することを含む、粉末コーティング方法。粉末コーティング組成物は、異なる密度を有する2種類以上の材料の混合物、例えば、エアロゲル粒子とフルオロポリマーを含有する粒子の混合物を含む。静電ガンは、粉末コーティング組成物の塗布中に、約0KV〜約100KVの負極性電圧を発生させる高電圧発生器を備えていてもよく、静電ガンは、丸いスプレーノズルを備えていてもよい。このような粉末コーティング方法を用いて定着器部材を製造する方法、このような方法によって調製される定着器部材、このような定着器部材を用いて低光沢画像を調製する方法。
【選択図】なし
Description
100gのPFA 320(ペルフルオロアルコキシフルオロポリマー)粉末(DuPontから入手可能)、1.25gのVM−2270エアロゲルシリカ粒子(Dow Corning(登録商標))、0.125gのSpectrAl(登録商標)100(CABOT Corporation製のヒュームドアルミナ)を125μmのふるいにかけ、ResodynTM音響混合機を用い、強度100%で4分間混合した。
粉末コーティング組成物をミニホッパー(Nordson Corporation)に入れ、振動する床の上部に置いた。粉末コーティング組成物を流動化させるために、空気の供給部を接続し、空気圧を0.2bar(製造業者が推奨するように)に設定した。振動する床の振動強度を70%に設定し、この材料を流動させる。一般的な研究の場合、ブランクにはシリコーン定着器ロールを使用した。機械による試験の場合、ブランクのシリコーンロールに、最初にプライマーPL−990CL(DuPont)の薄層を厚みが3μm〜約5μmになるように噴霧7し、粉末コーティング組成物をシリコーンに付着させる。ロールを120℃のオーブンで20分間あらかじめ加熱しておいたため、プライマーをすばやく乾燥した。
それぞれのロールのロール光沢をBYK Gardnerの75度光沢測定器を用いて測定し、光沢の読みは、定着器ロールに沿う光沢測定器で読み取った。
図6は、粉末コーティングに使用される静電(コロナ)ガンにおいて、kV(負極性電圧)の設定の関数としてのロール光沢を示す。コロナガンのkVの設定は(スプレーノズル/先端の形状に加え)、製造されるロール光沢に影響を与える。平坦なノズル/先端の場合、kVの全範囲にわたってロール光沢が比較的高く保たれるため、ロール光沢は、kVの設定に対し、それほど感度が高くなかった。しかし、丸いノズル/先端の場合、使用するkV設定に関連して、ロール光沢が高く調整されたり、低く調整されたりした。最大量のエアロゲルが堆積すると思われる最適なkV設定、その結果としての光沢の低下を解明することができる。
低光沢ロールを上述のように調製したが、静電ガンのkV設定は50kVであった。50kV設定で製造したロールについて測定されたロール光沢は、約35gguであった。
Claims (4)
- 粉末コーティング方法であって、
静電ガンによって基材に粉末コーティング組成物を塗布することを含み、
前記粉末コーティング組成物は、第1の材料と第2の材料の混合物を含み、前記第1の材料と第2の材料は密度が異なっており、
前記基材は接地されており、
前記静電ガンは、少なくとも1つの電極と高電圧発生器とを備えており、前記高電圧発生器は、約0KV〜約100KVの負極性電圧を発生させ、前記粉末コーティング組成物の塗布中に、この電圧が電極に印加される、方法。 - 前記塗布した粉末コーティング組成物を硬化させることによって、基材の上に剥離層を作成することをさらに含む、請求項1に記載の方法。
- 前記混合物が、複数のエアロゲル粒子を含み、前記第2の材料が、複数のフルオロポリマーを含有する粒子を含む、請求項1に記載の方法。
- 前記フルオロポリマーを含有する粒子は、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、フッ化ビニリデン、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、フッ化ビニリデン、ヘキサフルオロプロピレン、キュアサイトモノマーのテトラポリマーのうち、少なくとも1つを含む、請求項3に記載の方法。
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