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    • 2. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08041286B2
    • 2011-10-18
    • US11869152
    • 2007-10-09
    • Jung Yun Won
    • Jung Yun Won
    • G03G15/00
    • G03G15/6508G03G2215/00383G03G2215/00396
    • An image forming apparatus includes a structure to lift or lower a paper loading tray without a separate drive source while preventing damage to constituent elements even under an abnormal situation in that excessive force is transmitted to the paper loading tray. The image forming apparatus includes a paper feeding cassette including a paper loading tray and a lifting member to lift or lower the paper loading tray, the paper feeding cassette being detachably coupled to the body, a power intermittence device to intermit power to be transmitted from a drive source provided in a body of the image forming apparatus to the lifting member, and a power transmission device to transmit the power transmitted through the power intermittence device to the lifting member by use of at least one worm gear. The image forming apparatus further includes a safety lever having one end to cooperate with a pickup roller assembly. The other end of the safety lever is pivotally rotatable between a first position where the other end of the safety lever restrains the power intermittence device so as not to transmit power to the lifting member and a second position where the other end of the safety lever is spaced apart from the power intermittence device so as to transmit the power to the lifting member.
    • 图像形成装置包括:即使在过大的力传递到纸张装载盘的异常情况下,也可以在不分离驱动源的情况下提升或降低纸张装载盘的结构,同时防止构成元件的损坏。 图像形成装置包括:供纸盒,其包括纸张装载盘和用于提升或降低纸张装载盘的提升构件,所述供纸盒可拆卸地联接到主体;动力间歇装置,用于中断从一个 设置在图像形成装置的主体中的驱动源到提升构件,以及动力传递装置,通过使用至少一个蜗轮将通过动力间歇装置传递的动力传递到提升构件。 图像形成装置还包括具有与拾取辊组件配合的一端的安全杆。 安全杆的另一端在安全杆的另一端限制动力间歇装置的第一位置和第二位置之间可枢转地转动,以便不向提升构件传递动力,而第二位置则安全杆的另一端为 与动力间歇装置隔开,以将动力传递到提升构件。