現像装置及び画像形成装置

Developing device and image forming apparatus

Abstract

<P>PROBLEM TO BE SOLVED: To suck scattered toner and to continue sucking it without blocking a suction port even when such an abnormal state that a lump of toner falls occurs. <P>SOLUTION: A developing device includes: a developing roller 52 carrying developer on its surface, disposed in a place opposite to a photoreceptor drum 1, and used to develop a latent image on the surface of the photoreceptor drum 1; stirring rollers 61, 62, and 63 for conveying the developer; and a developing case 51 holding the developer, developer carrier, and developer conveying member in it. A passage 56 is formed between the developing case 51 and photoreceptor drum 1 so as to extend along the axial direction of the photoreceptor drum 1, the passage 56 being able to cause a current A of air along the extending direction to flow through. <P>COPYRIGHT: (C)2011,JPO&INPIT
【課題】飛散したトナーを吸引し、かつトナー塊が落ちるような異常発生時にも吸引口を詰まらせずに吸引し続けられるものとする。 【解決手段】表面に現像剤を担持し、感光体ドラム1と対向する個所に配置され感光体ドラム1の表面の潜像を現像する現像ローラ52と、前記現像剤を搬送する攪拌ローラ61,62,63と、現像剤、現像剤担持体及び現像剤搬送部材を内部に保持する現像ケース51とを備え、前記現像ケース51と前記感光体ドラム1との間に感光体ドラム1の軸方向に沿わせて延設され、該延設方向に沿った気流Aを流通可能な流路56を形成した。 【選択図】図2

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    JP-2001005365-AJanuary 12, 2001Canon Inc, キヤノン株式会社Image forming device
    JP-2005257739-ASeptember 22, 2005Ricoh Co Ltd, 株式会社リコー現像装置、プロセスカートリッジ及び画像形成装置

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    US-8843015-B2September 23, 2014Ricoh Company, LimitedImaging device, image forming apparatus, and process cartridge