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    • 1. 发明授权
    • Image forming apparatus having contact charger
    • 具有接触式充电器的图像形成装置
    • US5689777A
    • 1997-11-18
    • US555779
    • 1995-11-09
    • Masashi YamamotoHitoshi SaitoKoji Uno
    • Masashi YamamotoHitoshi SaitoKoji Uno
    • G03G15/02G03G15/08G03G21/00G03G21/14
    • G03G15/0216
    • An image forming apparatus includes a charging rotary brush in contact with a photosensitive member, a laser beam irradiator to form an electrostatic latent image, a developing unit for developing the latent image into a visible image and collecting residual developer remaining on the surface of the photosensitive member after the visual image is transferred to a transfer material, and a power source unit for applying to the charging rotary brush an oscillating voltage fulfilling the requirement of: .DELTA.t 3.times.L/Vpc wherein .DELTA.t is the time taken for the oscillating voltage to vary between .+-.300 V above and below the central oscillating voltage value between the peaks of the voltage, L is the printing pitch, and Vpc is the speed of movement of the surface of the photosensitive member.
    • 图像形成装置包括与感光构件接触的充电旋转刷,形成静电潜像的激光束照射器,用于将潜像显影成可见图像并收集残留在感光体表面上的残留显影剂的显影单元 将视觉图像转印到转印材料上的成像体,以及向充电旋转刷施加满足以下要求的振荡电压的电源单元:DELTA t 3xL / Vpc其中DELTA t为 振荡电压在电压峰值之间的中心振荡电压值之上+/- 300V之间变化的时间为L,为印刷间距,Vpc为感光部件表面的移动速度。
    • 5. 发明授权
    • Image forming apparatus which decreases a sheet transportation speed difference between a registration device and a transfer device
    • 降低登记装置和转印装置之间的纸张传送速度差的图像形成装置
    • US08583025B2
    • 2013-11-12
    • US12929778
    • 2011-02-15
    • Tomohiko FujiiTomoya AdachiMasashi Yamamoto
    • Tomohiko FujiiTomoya AdachiMasashi Yamamoto
    • G03G15/00
    • G03G15/6564
    • An image forming apparatus includes a transfer material transportation device to transport a transfer material; a transfer device to transfer a toner image to the transfer material transported by the transfer material transportation device; a fusing device, disposed after the transfer device, to fuse a toner image on the transfer material transported by the transfer material transportation device; a registration device, disposed before the transfer device, to feed the transfer material, supplied from a sheet feeder, to the transfer device; and a biasing device, disposed for the registration device, to regulate movement of the registration device to decrease a speed difference between a transfer material transport speed generated by the transfer device and a transfer material transport speed generated by the registration device.
    • 图像形成装置包括:转印材料输送装置,用于输送转印材料; 转印装置,用于将调色剂图像转印到由转印材料输送装置输送的转印材料上; 设置在转印装置之后的定影装置,用于将由转印材料输送装置输送的转印材料上的调色剂图像熔合; 布置在所述转印装置之前的配准装置,将从供纸器供给的转印材料供给到所述转印装置; 以及为登记装置设置的偏置装置,以调节对准装置的移动,以减小由转印装置产生的转印材料输送速度与由注册装置产生的转印材料传送速度之间的速度差。