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    • 5. 发明申请
    • SCANNER
    • 扫描器
    • US20100149605A1
    • 2010-06-17
    • US12625132
    • 2009-11-24
    • Hyoung Il KIM
    • Hyoung Il KIM
    • H04N1/04
    • H04N1/0402H04N1/0414H04N1/0443H04N1/0455H04N1/1013H04N1/1017H04N1/1026H04N1/193
    • A scanner with a first driving motor and a second driving motor has an improved driving structure as transmission of a driving force from one of the first and the second driving motors to the other driving motor is inhibited, thereby preventing loss of power and increased noise and vibration. The scanner may include a first driving motor, a second driving motor, an operating unit operable to move the scanning unit and configured to operate by a driving force generated from one of the first and the second driving motors and a power transmitting unit configured to transmit the driving force generated from one of the first and the second driving motors to the operating unit while disallowing transmission of the driving force between the first and the second driving motors.
    • 具有第一驱动电动机和第二驱动电动机的扫描器具有改进的驱动结构,因为从第一和第二驱动电动机之一到另一个驱动电动机的驱动力的传递被抑制,从而防止功率损失和增加的噪声, 振动。 扫描仪可以包括第一驱动马达,第二驱动马达,操作单元,其可操作以移动扫描单元并且构造成通过从第一和第二驱动马达中的一个产生的驱动力进行操作;以及动力传递单元, 所述驱动力从所述第一驱动马达和所述第二驱动马达之一产生到所述操作单元,同时不允许所述驱动力在所述第一和第二驱动马达之间的传递。
    • 6. 发明授权
    • Method of calibrating print alignment error
    • 校准打印对准误差的方法
    • US07478894B2
    • 2009-01-20
    • US10759109
    • 2004-01-20
    • Hyoung-il KimKyung-pyo Kang
    • Hyoung-il KimKyung-pyo Kang
    • B41J29/393B41J29/38
    • B41J2/04505B41J2/04586B41J2/2135B41J19/145B41J29/393
    • A print alignment error between a first printhead of a first ink cartridge and a second printhead of a second ink cartridge installed in an inkjet printer is calibrated by printing preset test patterns on a paper according to an input correction signal using the first and second printheads, scanning the printed test patterns, measuring positions of a starting point and an end point of each of the scanned test patterns, calculating a horizontal print alignment error between the first and second printheads from the starting points, calculating a vertical print alignment error between the first and second printheads from the starting points and the end points, and calibrating the calculated horizontal and vertical print alignment errors.
    • 第一墨盒的第一打印头与安装在喷墨打印机中的第二墨盒的第二打印头之间的打印对准错误通过使用第一和第二打印头根据输入的校正信号在纸上打印预设的测试图案来校准, 扫描打印的测试图案,测量每个扫描的测试图案的起始点和终点的位置,从起始点计算第一和第二打印头之间的水平打印对准误差,计算第一和第二打印头之间的垂直打印对准误差 和来自起始点和终点的第二个打印头,并校准计算出的水平和垂直打印对齐错误。
    • 9. 发明申请
    • METHOD FOR REDUCING PRINTING POSITION ERROR AND IMAGE FORMING APPARATUS USING THE SAME
    • 使用该方法减少打印位置误差和图像形成装置的方法
    • US20060285907A1
    • 2006-12-21
    • US11375049
    • 2006-03-15
    • Kyung-pyo KangHyoung-il Kim
    • Kyung-pyo KangHyoung-il Kim
    • B41J29/38
    • 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。
    • 10. 发明申请
    • Method and apparatus for measuring optical density of image printed on medium
    • 用于测量印刷在介质上的图像的光密度的方法和装置
    • US20060192839A1
    • 2006-08-31
    • US11320729
    • 2005-12-30
    • Hyoung-il KimKyung-pyo Kang
    • Hyoung-il KimKyung-pyo Kang
    • B41J2/36
    • B41J2/36
    • A method and apparatus are provided for measuring the optical density of an image printed on a medium in an image forming apparatus. The method includes the steps of reading reference information from a memory, measuring the amount of light reflected from a medium on which a target image is printed by applying light to the medium, and calculating the optical density of the target image using the reference information and the measured amount of light reflected from the medium. Accordingly, it is possible to precisely measure the optical density of an image printed on the medium without the aid of an additional optical density measurement device and easily reduce differences or variations in the quality of printing between image forming apparatuses.
    • 提供了一种用于测量印刷在图像形成装置中的介质上的图像的光密度的方法和装置。 该方法包括以下步骤:从存储器读取参考信息,通过向介质施加光来测量从其上打印目标图像的介质反射的光量,以及使用参考信息计算目标图像的光密度;以及 从介质反射的光的测量量。 因此,可以通过附加的光密度测量装置精确地测量印刷在介质上的图像的光密度,并且可以容易地减少图像形成装置之间的打印质量的差异或变化。