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    • 8. 发明授权
    • Image forming apparatus having a ventilated image forming unit
    • 具有通风图像形成单元的图像形成装置
    • US5038174A
    • 1991-08-06
    • US575370
    • 1990-08-30
    • Junichi KatoMasahiro GotoKoichi SuwaHideyuki YanoTakahiro Inoue
    • Junichi KatoMasahiro GotoKoichi SuwaHideyuki YanoTakahiro Inoue
    • G03G15/00G03G21/00G03G21/18G03G21/20
    • G03G21/1814G03G21/206G03G2221/1645G03G2221/1669G03G2221/1693G03G2221/183
    • An image forming apparatus has an image forming unit which is detachably mounted in the stationary main part of the apparatus. The unit includes an image carrier with a photosensitive layer, a charging device capable of electrostatically charging the image carrier in contact therewith, and a housing supporting the image carrier and the charging device and provided with an exposure opening. An air flow is positively formed such that, with the image forming unit mounted in a predetermined mounting portion in the apparatus, air flows from regions near both ends of the image carrier towards the exposure opening past a region where the charging device contacts the image carrier. With this arrangement, ozone generated in the image forming unit due to operation of the contact type charging device is efficiently carried away from the image forming unit, thus eliminating generation of image defects attributable to presence of ozone and other discharge products.
    • 图像形成装置具有可拆卸地安装在装置的固定主要部分中的图像形成单元。 该单元包括具有感光层的图像载体,能够使图像载体与其接触地静电充电的充电装置,以及支撑图像载体和充电装置并具有曝光开口的壳体。 空气流被积极地形成,使得在图像形成单元安装在装置中的预定安装部分中的情况下,空气从图像载体的两端附近的区域朝向曝光开口流过经过充电装置接触图像载体的区域 。 利用这种布置,由于接触式充电装置的操作而在图像形成单元中产生的臭氧被有效地从图像形成单元传送出去,从而消除了由臭氧和其它放电产物的存在引起的图像缺陷的产生。