定着装置

Abstract

【課題】 無張架の状態の定着ベルトに振れや揺れを生じることなく、所定の速度で確実に駆動して良好な定着画像を得る。 【解決手段】 無端状の定着ベルト1の内側に、支持部材4で支持された押圧パッド3を配置し、定着ベルト1の外周面に当接される加圧ロール2と押圧パッド3との間に定着ベルト1を無張架の状態で挟持する。定着ベルトの両側縁部には、その内側に端部拘束部材(エンドキャップ部材6)をぴったりと嵌め合わせ、断面の形状を円形に拘束する。そして、端部拘束部材6の中心に軸受け10を取り付け、支持部材4の端部に設けられた軸部4aによって回転可能に支持させる。端部拘束部材6は半径方向に張りだしたギア部を有しており、このギア部に噛み合わされた駆動ギア21によって端部拘束部材6を回転駆動し、定着ベルト1を周回駆動する。 【選択図】 図4
<P>PROBLEM TO BE SOLVED: To provide a superior fixing images by surely driving a fixing at a prescribed speed, without generating fluctuations or swings on the fixing belt in a non-tension state. <P>SOLUTION: A fixing device arranges a pushing pad 3 supported on a support member 4 in the inside of an endless fixing belt 1, and sandwiches the fixing belt 1 between a pressure roller 2 contacting the outer peripheral face of the fixing belt 1 and the pushing pad 3 in the non-tension state. The fixing device tightly fits an end restraint member (end cap member 6) in the inside, at both side edge parts of the fixing belt so as to restrain a cross section shape into a circular shape. The fixing device attaches a bearing 10 at the center of the end restraint member 6 and rotatably supports it by a shaft part 4a provided to the end of a support member 4. The fixing device includes a gear part, projected in the radial direction on the end restraint member 6, rotates the end restraint member 6 by a drive gear 21 engaged with the gear part, and circumferentially drives the fixing belt 1. <P>COPYRIGHT: (C)2006,JPO&amp;NCIPI

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Cited By (13)

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    JP-2008033084-AFebruary 14, 2008Ricoh Co Ltd, 株式会社リコー定着装置、画像形成装置
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    JP-2008176285-AJuly 31, 2008Fuji Xerox Co Ltd, 富士ゼロックス株式会社Fixing member, fixing device using same, and image forming apparatus with fixing device
    JP-2011002710-AJanuary 06, 2011Fuji Xerox Co Ltd, 富士ゼロックス株式会社駆動伝達部品及びこれを用いた駆動伝達機構、被駆動装置、駆動処理装置
    JP-2012018420-AJanuary 26, 2012Ricoh Co Ltd, 株式会社リコーFixing device and image forming apparatus
    JP-2013114129-AJune 10, 2013Konica Minolta Business Technologies Inc, コニカミノルタビジネステクノロジーズ株式会社Fixing device and image forming apparatus
    JP-2013114130-AJune 10, 2013Konica Minolta Business Technologies Inc, コニカミノルタビジネステクノロジーズ株式会社定着装置及び画像形成装置
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