公开(公告)号：US20090123182A1

公开(公告)日：2009-05-14

申请号：US12262356

申请日：2008-10-31

申请人： Yoshihito SASAMOTO ,  Hiroyuki WATANABE ,  Tadayuki UEDA ,  Ryuji OKUTOMI ,  Akifumi ISOBE ,  Takashi NARA ,  Jun ONISHI

发明人： Yoshihito SASAMOTO ,  Hiroyuki WATANABE ,  Tadayuki UEDA ,  Ryuji OKUTOMI ,  Akifumi ISOBE ,  Takashi NARA ,  Jun ONISHI

IPC分类号： G03G15/00

CPC分类号： G03G15/0194 ,  G03G2215/0158

摘要： An image forming apparatus including photoconductor drums corresponding to colors, motors, gears to transmit each rotation of the motors to each of the photoconductor drums, each of two gears comprising a portion to be detected intermittently continuing in a circumferential direction at a position having same radius centering around a rotary shaft of the gears, a pair of phase sensors to output detection signals of signal logics according to an existence or a non-existence of the portion to be detected at a point symmetric position centering around the rotary shaft of each of two gears and a control unit to calculate a rotation phase difference between each of the gears based on a logical combination of the detection signals which are output from the pair of phase sensors and to control the motors so as to synchronize rotation of each of the gears based on the calculated rotation phase difference.

摘要翻译： 一种图像形成装置，包括对应于颜色的感光鼓，电动机，齿轮，用于将电动机的每个旋转传递到每个感光鼓，两个齿轮中的每一个包括在具有相同半径的位置处间歇地沿圆周方向连续的待检测部分 以齿轮的旋转轴为中心，一对相位传感器根据在两个旋转轴中心的对称位置处根据被检测部分的存在或不存在来输出信号逻辑的检测信号 齿轮和控制单元，用于基于从该对相位传感器输出的检测信号的逻辑组合来计算每个齿轮之间的旋转相位差，并且控制马达以使每个齿轮的旋转同步 计算旋转相位差。

公开(公告)号：US20110293307A1

公开(公告)日：2011-12-01

申请号：US13114747

申请日：2011-05-24

申请人： Satoshi OGATA ,  Katsunori TAKAHASHI ,  Jun ONISHI

发明人： Satoshi OGATA ,  Katsunori TAKAHASHI ,  Jun ONISHI

IPC分类号： G03G15/16

CPC分类号： G03G15/168 ,  G03G15/161 ,  G03G2215/0193

摘要： An image forming apparatus including: an image bearing member for bearing a toner image; a transfer section, which is pressed against, and is separated from, the image bearing member, for transferring a toner image on the image bearing member onto a recording medium when being pressed against the image bearing member, a transfer section drive section for driving the transfer section to rotate; and a control section configured to control the transfer section drive section to carry out constant speed control and constant torque control, to drive said transfer section to rotate at a constant speed, and at a constant torque, respectively, wherein the control section carries out the constant torque control while the transfer section is pressed against the image bearing member, in accordance with a drive torque detected when the constant speed control is carried out while the transfer section is separated from the image bearing member.

摘要翻译： 一种图像形成装置，包括：用于承载调色剂图像的图像承载部件; 传送部分，其被压靠并且与图像承载部件分离，用于当被压靠在图像承载部件上时将图像承载部件上的调色剂图像转印到记录介质上;传送部分驱动部分，用于驱动 转移部分旋转; 以及控制部，其被配置为控制所述传送部驱动部，以进行恒速控制和恒定转矩控制，以驱动所述传送部分分别以恒定速度和恒定转矩旋转，其中所述控制部分执行 当转印部分与图像承载部件分离时，根据在执行恒定速度控制时检测到的驱动转矩，将转印部分压靠在图像承载部件上的恒定转矩控制。