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    • 44. 发明授权
    • Method for reducing printing position error and image forming apparatus using the same
    • 降低打印位置误差的方法和使用其的成像装置
    • US07192205B2
    • 2007-03-20
    • US11375049
    • 2006-03-15
    • Kyung-pyo KangHyoung-il Kim
    • Kyung-pyo KangHyoung-il Kim
    • B41J11/44B65H7/02G03G15/00
    • B41J11/42Y10S271/902
    • An apparatus and method are provided for reducing a printing position error, in which the method includes the steps of (a) driving an encoder wheel as many times as a predetermined number of forward counts at a predetermined initial acceleration, thereby making the edge of a printing paper become separated from a sensing unit and conveyed in a forward direction, (b) driving the encoder wheel at the predetermined initial acceleration and conveying the printing paper in a backward direction, (c) calculating a difference value between the number of backward counts of the encoder wheel from a start time of the backward driving to a point when the sensing unit detects the edge of the printing paper and the number of forward counts, and (d) repeating the steps (a) through (c) for a designated number of times while varying the predetermined initial acceleration, and setting an initial acceleration corresponding to a smallest value among the difference values as the initial acceleration for driving the encoder wheel. Therefore, in the case of separately printing data on one printing paper several times, the resolution of a printed image can be improved by reducing the printing position error.
    • 提供一种用于减少打印位置误差的装置和方法,其中该方法包括以下步骤:(a)以预定的初始加速度将编码器轮驱动多达预定数量的前进计数,从而使得 打印纸与感测单元分离并向前传送,(b)以预定的初始加速度驱动编码轮,并向后传送打印纸;(c)计算反向计数之间的差值 的编码器轮从反向驱动的开始时刻到感测单元检测到打印纸的边缘的位置和前进计数的数量,以及(d)重复步骤(a)至(c)为指定的 次数,同时改变预定的初始加速度,并且将与差值中的最小值相对应的初始加速度设定为dr的初始加速度 放弃编码轮。 因此,在一次打印纸上分别打印数据的情况下,可以通过减少打印位置误差来提高打印图像的分辨率。
    • 45. 发明申请
    • Image forming apparatus
    • 图像形成装置
    • US20060251456A1
    • 2006-11-09
    • US11357136
    • 2006-02-21
    • Kyung-pyo KangHyoung-il Kim
    • Kyung-pyo KangHyoung-il Kim
    • B41J29/38B41J11/00
    • B41J11/008
    • An image forming apparatus constantly forms images of the same length at each of printing periods by conveying a printing medium at a constant speed. The image forming apparatus includes a driving motor to provide a driving force, a conveying unit to convey a printing medium by receiving the driving force from the driving motor, and a printer head to form images according to printing data on each line of the printing medium at a predetermined printing period (Cp), wherein the printing period (Cp) is set as a positive integer multiplied by a cogging torque cycle of the driving motor.
    • 图像形成装置通过以恒定的速度传送打印介质,在每个打印周期不间断地形成相同长度的图像。 图像形成装置包括用于提供驱动力的驱动电机,通过接收来自驱动电机的驱动力来传送打印介质的传送单元和打印头,以根据打印介质的每一行上的打印数据形成图像 在预定打印周期(Cp)中,其中打印周期(Cp)被设置为正整数乘以驱动马达的齿槽转矩循环。
    • 47. 发明申请
    • Motor control system and method fast-adaptable to operation environment
    • 电机控制系统和方法快速适应运行环境
    • US20050073277A1
    • 2005-04-07
    • US10608184
    • 2003-06-30
    • Hyoung-il Kim
    • Hyoung-il Kim
    • H02P5/00G05B11/42G05B15/02G05B19/04G05B19/19
    • G05B19/19G05B2219/42128
    • A method and an apparatus to control a motor includes calculating N control algorithms for respective controllers to correspond to N motor driving conditions, driving the motor under N motor driving environments by using at least one controller of the respective controllers, calculating performance indexes by using predetermined control factors which are detected when driving the motor using the at least one controller under the N motor driving environments, and storing the calculated N control algorithms for the respective controllers and the performance indexes corresponding to each of the N driving conditions. Accordingly, a motor driving controller optimum for driving environments is efficiently selected in a short time without wasting system resources.
    • 一种控制电动机的方法和装置包括:计算各控制器的N个控制算法,以对应于N个电机驱动条件,通过使用各个控制器的至少一个控制器在N个电动机驱动环境下驱动电动机,通过使用预定的 在N个电动机驱动环境下使用至少一个控制器驱动电动机时检测到的控制因素,以及存储针对各个控制器的所计算的N个控制算法和与N个驾驶条件中的每一个对应的性能指标。 因此,在短时间内有效地选择适用于驾驶环境的电动机驱动控制器,而不浪费系统资源。