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    • 52. 发明授权
    • Developing device, process cartridge, and image forming apparatus
    • 显影装置,处理盒和成像装置
    • US08391755B2
    • 2013-03-05
    • US12205314
    • 2008-09-05
    • Yoshinori NakagawaYasuyuki IshiiHideki KosugiTomoko TakahashiMasaaki YamadaIchiro Kadota
    • Yoshinori NakagawaYasuyuki IshiiHideki KosugiTomoko TakahashiMasaaki YamadaIchiro Kadota
    • G03G15/08
    • G03G15/0806G03G2215/0643G03G2215/0651
    • A developing device constituted to be capable of reliably making toner flare, and carrying out developing normally in the developing area, by preventing toner from adhering to the toner carrier. A developing device having a toner carrier which is disposed in opposition to a latent image carrier and which carries toner for developing an electrostatic latent image on the latent image carrier, the developing device including: a plurality of electrodes aligned at a predetermined interval within the toner carrier; voltage application means for applying a voltage to the electrodes so that the electric field between the plurality of electrodes varies with time, wherein the electric field between the electrodes causes the toner on the toner carrier to hop and form a cloud; and a toner adhesion prevention member that is provided upstream of a developing area where the latent image carrier is in opposition to the toner carrier and that prevents adhesion of toner to the toner carrier. According to the developing device, it is possible to prevent toner from adhering to the toner carrier, and it is possible to make the toner flare reliably.
    • 一种显影装置,其能够通过防止调色剂粘附到调色剂载体上而能够可靠地制造调色剂,并在显影区域中正常显影。 一种显影装置,具有调色剂载体,该调色剂载体与潜像载体相对设置并且承载用于在潜像载体上显影静电潜像的调色剂,所述显影装置包括:在调色剂内以预定间隔排列的多个电极 载体 电压施加装置,用于向电极施加电压,使得多个电极之间的电场随时间变化,其中电极之间的电场导致调色剂载体上的调色剂跳跃并形成云; 以及调色剂粘附防止构件,其设置在潜像载体与调色剂载体相对的显影区域的上游,并且防止调色剂粘附到调色剂载体上。 根据显影装置,可以防止调色剂粘附到调色剂载体上,并且可以使调色剂可靠地变色。
    • 57. 发明申请
    • DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS THAT USES THIS DEVICE
    • 开发设备和使用此设备的图像形成装置
    • US20090123193A1
    • 2009-05-14
    • US12261302
    • 2008-10-30
    • Hideki KOSUGIYasuyuki IshiiTomoko TakahashiMasaaki YamadaIchiro KadotaYoshinori Nakagawa
    • Hideki KOSUGIYasuyuki IshiiTomoko TakahashiMasaaki YamadaIchiro KadotaYoshinori Nakagawa
    • G03G15/08
    • G03G15/0818G03G2215/0653
    • A development device capable of suppressing the occurrence of development defects caused by partial damage to an electrode of a toner bearing roller. The development device is provided with a first electrode layer and a second electrode layer, which are laminated so as to overlap one another in a normal direction with respect to the surface of the roller part of the toner bearing roller. A plurality of openings, which are independently arranged in a matrix in both the roller surface movement direction and an orthogonal-to-movement direction which is the direction orthogonal thereto, are provided in, of these electrode layers, the second electrode layer existing in the upper location that is closer to the roller surface, over the entire latent image bearable area of a photosensitive body in the orthogonal-to-movement direction. The toner on the surface of the roller part is caused to hop between a plurality of spots directly beneath the openings that respectively exist directly beneath the plurality of openings in the second electrode layer, and a plurality of spots between the openings that respectively exist between the plurality of openings in the second electrode layer, within the entire area of the first electrode layer which is uniformly formed in the roller circumferential direction.
    • 一种显影装置,其能够抑制由调色剂承载辊的电极的部分损伤引起的显影缺陷的发生。 显影装置设置有第一电极层和第二电极层,其被层压以相对于调色剂承载辊的辊部分的表面在法向上彼此重叠。 在这些电极层中设置有多个开口,这些开口在滚子表面移动方向和与其正交的方向上的正交方向上以矩阵形式独立地布置,存在于第二电极层 在感光体的垂直移动方向上的整个潜像可承受区域上更接近辊表面的上部位置。 导致辊部分表面上的调色剂在直接位于开口下面的多个位于第二电极层的多个开口正下方的多个点之间跳跃,并且开口之间的多个点分别存在于第二电极层之间 在第一电极层的沿辊周向均匀地形成的整个区域内的第二电极层中的多个开口。