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    • 34. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08103193B2
    • 2012-01-24
    • US12412656
    • 2009-03-27
    • Akifumi IsobeRyuji OkutomiHiroyuki WatanabeTadayuki UedaYoshihito SasamotoTakashi Nara
    • Akifumi IsobeRyuji OkutomiHiroyuki WatanabeTadayuki UedaYoshihito SasamotoTakashi Nara
    • G03G15/00
    • G03G15/757G03G15/0194G03G15/50G03G2215/0129G03G2221/1657
    • An image forming apparatus having a color mode and a monochromatic mode, which includes: a transmission member, which can be switched between a transmitted state where a motor transfers a drive force to a single photoreceptor drum and a non-transmitted state where the motor does not transfer the drive force to the single photoreceptor drum; and a controller which switches to the non-transmitted state while executing an image formation in the monochromatic mode, and when a command to execute a next image formation is not instructed, switches to the transmitted state after a phase adjustment of each photoreceptor drum after the image formation in the monochromatic mode, and controls the motor to execute a slight rotation operation at every prescribed period of time by synchronizing plural drums including the single photoreceptor drum with each other through the transmission member.
    • 一种具有彩色模式和单色模式的图像形成装置,包括:传输构件,其可以在电动机将驱动力传递到单个感光鼓的传送状态与电动机的非透射状态之间切换 不将驱动力传递到单个感光鼓; 以及在以单色模式执行图像形成的同时切换到非发送状态的控制器,并且当没有指示执行下一个图像形成的命令时,在每个感光鼓的相位调整之后切换到发送状态 在单色模式下形成图像,并且通过使包括单个感光鼓的多个鼓通过传输构件相互同步,来控制电动机在每个规定的时间段执行轻微的旋转操作。
    • 38. 发明申请
    • Image forming apparatus
    • 图像形成装置
    • US20060146120A1
    • 2006-07-06
    • US11222794
    • 2005-09-12
    • Norio JoichiAtsushi TakahashiYoubao PengYoshihito SasamotoYoshiki KatayamaTakashi Nara
    • Norio JoichiAtsushi TakahashiYoubao PengYoshihito SasamotoYoshiki KatayamaTakashi Nara
    • B41J2/45
    • G03G15/326B41J2/45G03G15/04054
    • An image forming apparatus includes a photoreceptor member; a LED head that includes a plurality of light emitting diodes arrayed in a line along a rotating axial direction of said photoreceptor member and that is modulated in response to image signals, so as to expose said photoreceptor member while said photoreceptor member is rotating; a deviation detecting sensor to detect deviations on a circumferential surface of said photoreceptor member; a filter to extract low frequency components including a rotational frequency component of said photoreceptor member from deviation signals detected by said deviation detecting sensor, so as to acquire deviation information with respect to said circumferential surface of said photoreceptor member; a driving section to move said LED head back and forth against said circumferential surface of said photoreceptor member; and a position controlling section to control said driving section, based on said deviation information acquired by said filter, so as to keep a distance between said LED head and said circumferential surface of said photoreceptor member constant.
    • 图像形成装置包括感光体部件; LED头,其包括沿着所述感光体的旋转轴向排成一行的多个发光二极管,并且响应于图像信号进行调制,以便在所述感光体旋转的同时露出所述感光体; 偏移检测传感器,用于检测所述感光体的周面上的偏差; 滤波器,用于从由所述偏差检测传感器检测的偏差信号中提取包括所述感光体的旋转频率分量的低频分量,以便获得关于所述感光体的所述圆周表面的偏差信息; 驱动部,使所述LED头前后抵靠所述感光体的所述周面移动; 以及位置控制部分,用于基于由所述滤光器获取的所述偏差信息来控制所述驱动部分,以便保持所述LED头与所述感光体的所述圆周表面之间的距离恒定。