公开(公告)号：US20050078139A1

公开(公告)日：2005-04-14

申请号：US10927521

申请日：2004-08-27

申请人： Kyung-pyo Kang ,  Tae-young Kim ,  Hyoung-il Kim

发明人： Kyung-pyo Kang ,  Tae-young Kim ,  Hyoung-il Kim

IPC分类号： B41J29/44 ,  B41J11/00 ,  B41J29/393

CPC分类号： B41J11/0095 ,  B41J11/0065

摘要： A method and apparatus for detecting an edge of paper and a borderless printing method. The method involves feeding paper through a printing apparatus, outputting a sensing signal for the paper using a sensor disposed adjacent to a print head, and calculating a gradient of the sensing signal and detecting an edge of the paper based on the gradient of the sensing signal.

摘要翻译： 一种用于检测纸张边缘的方法和装置以及无边界打印方法。 该方法包括通过打印设备进纸，使用与打印头相邻设置的传感器输出纸张的感测信号，以及基于感测信号的梯度来计算感测信号的梯度和检测纸张的边缘 。

公开(公告)号：US07250958B2

公开(公告)日：2007-07-31

申请号：US11154526

申请日：2005-06-17

申请人： Hyoung-il Kim ,  Kyung-pyo Kang

发明人： Hyoung-il Kim ,  Kyung-pyo Kang

IPC分类号： B41J2/315

CPC分类号： B41J2/335 ,  B41J3/60 ,  B41J11/42 ,  B41J29/393

摘要： A method for printing on a thermal medium by aligning test patterns comprises the steps of feeding a thermal medium to a print starting position of the medium beyond a predetermined distance from a heating elements of a thermal printhead; printing a first test pattern when a front edge of the medium is detected by an edge detection sensor; measuring a first distance between the front edge and the first test pattern by detecting the first test pattern using the edge detection sensor; rotating the thermal printhead to face the second surface; feeding the thermal medium to the print starting position of the medium is beyond predetermined distance the thermal printhead; printing a predetermined second test pattern when the front edge of the medium is detected by the edge detection sensor while feeding the medium; and measuring a second distance between the front edge and the second test pattern.

摘要翻译： 通过对准测试图案在热介质上打印的方法包括以下步骤：将热介质馈送到距离热打印头的加热元件预定距离的介质的打印开始位置; 当边缘检测传感器检测到介质的前边缘时，打印第一测试图案; 通过使用边缘检测传感器检测第一测试图案来测量前边缘和第一测试图案之间的第一距离; 旋转热敏打印头以面对第二表面; 将热介质供给到介质的打印开始位置超过预定距离的热打印头; 当馈送介质时边缘检测传感器检测到介质的前边缘时，打印预定的第二测试图案; 以及测量所述前边缘和所述第二测试图案之间的第二距离。

公开(公告)号：US07083251B2

公开(公告)日：2006-08-01

申请号：US10753333

申请日：2004-01-09

申请人： Kyung-pyo Kang ,  Hyoung-il Kim

发明人： Kyung-pyo Kang ,  Hyoung-il Kim

IPC分类号： B41J29/393

CPC分类号： B41J11/42

摘要： A method of compensating a sheet feeding error in an ink-jet printer includes printing a test pattern on the sheet; scanning the printed test pattern using the image sensor and measuring a distance W1 between a starting point X1s and an ending point X1e of the test pattern; driving the feeding roller and moving the sheet to a set distance Hm so that the set distance Hm is shorter than a length of the test pattern in a sheet feeding direction; scanning the test pattern using the image sensor and measuring a distance W2 between a starting point X2s and an ending point X2e of the test pattern; calculating a distance H, along which the sheet is actually fed, from a difference between the distances W2 and W1; calculating a feeding error E of the sheet from a difference between the feeding distance H and the set distance Hm; and compensating for the sheet feeding error E at the set distance Hm.

摘要翻译： 一种补偿喷墨打印机中的送纸误差的方法包括在纸张上印刷测试图案; 使用图像传感器扫描印刷的测试图案，并且测量在起始点X 1和S 1之间的距离W 1 1 模式; 从距离W 2和W 1之间的差计算出实际馈送纸张的距离H; 根据供给距离H和设定距离H >m之间的差计算纸张的进给误差E; 并且在设定的距离H andm处补偿送纸误差E.

公开(公告)号：US20060017764A1

公开(公告)日：2006-01-26

申请号：US11167466

申请日：2005-06-28

申请人： Kyung-pyo Kang ,  Hyoung-il Kim ,  Hwal-am Lee

发明人： Kyung-pyo Kang ,  Hyoung-il Kim ,  Hwal-am Lee

IPC分类号： B41J29/393

CPC分类号： B41J11/44

摘要： Provided are a method and an apparatus for controlling a print head of an image forming apparatus by using an encoder in which the operation of a motor is controlled by using an electrical signal attached to an idle roller and a period at which the print head prints an image on a printing medium is synchronized with the electrical signal. The method comprises converting the operation of the idle roller into an electrical signal by using the encoder and outputting the electrical signal, and controlling the print head so that the print head prints an image on the printing medium in response to the electrical signal.

摘要翻译： 提供了一种用于通过使用编码器来控制图像形成装置的打印头的方法和装置，其中通过使用附接到空转辊的电信号和打印头打印的周期来控制电动机的操作 打印介质上的图像与电信号同步。 该方法包括通过使用编码器将空转辊的操作转换成电信号并输出​​电信号，并且控制打印头，使得打印头响应于电信号在打印介质上打印图像。

公开(公告)号：US07192205B2

公开(公告)日：2007-03-20

申请号：US11375049

申请日：2006-03-15

申请人： Kyung-pyo Kang ,  Hyoung-il Kim

发明人： Kyung-pyo Kang ,  Hyoung-il Kim

IPC分类号： B41J11/44 ,  B65H7/02 ,  G03G15/00

CPC分类号： B41J11/42 ,  Y10S271/902

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20060251456A1

公开(公告)日：2006-11-09

申请号：US11357136

申请日：2006-02-21

申请人： Kyung-pyo Kang ,  Hyoung-il Kim

发明人： Kyung-pyo Kang ,  Hyoung-il Kim

IPC分类号： B41J29/38 ,  B41J11/00

CPC分类号： B41J11/008

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20060108424A1

公开(公告)日：2006-05-25

申请号：US11281721

申请日：2005-11-18

申请人： Hyoung-il Kim ,  Kyung-pyo Kang

发明人： Hyoung-il Kim ,  Kyung-pyo Kang

IPC分类号： G06K19/06

CPC分类号： G06K7/10851 ,  G06K7/14 ,  G06K7/1452

摘要： A method and apparatus for accurately reading a barcode with a low-resolution reflective sensor are provided. The apparatus includes: a scanning unit for sensing a barcode and generating a scan signal; a searching unit for calculating a rate of change of the scan signal, extracting sloped line segments from the scan signal, searching for starting and ending points of the extracted sloped line segments to detect edges of the barcode's bars; and a barcode reading unit for reading out the barcode based on distances between the detected edges.

摘要翻译： 提供了一种用于使用低分辨率反射传感器准确读取条形码的方法和装置。 该装置包括：扫描单元，用于感测条形码并产生扫描信号; 搜索单元，用于计算扫描信号的变化率，从扫描信号中提取倾斜的线段，搜索所提取的倾斜线段的起点和终点以检测条形码条的边缘; 以及条形码读取单元，用于基于检测到的边缘之间的距离读出条形码。

公开(公告)号：US07478894B2

公开(公告)日：2009-01-20

申请号：US10759109

申请日：2004-01-20

申请人： Hyoung-il Kim ,  Kyung-pyo Kang

发明人： Hyoung-il Kim ,  Kyung-pyo Kang

IPC分类号： B41J29/393 ,  B41J29/38

CPC分类号： B41J2/04505 ,  B41J2/04586 ,  B41J2/2135 ,  B41J19/145 ,  B41J29/393

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20060285907A1

公开(公告)日：2006-12-21

申请号：US11375049

申请日：2006-03-15

申请人： Kyung-pyo Kang ,  Hyoung-il Kim

发明人： Kyung-pyo Kang ,  Hyoung-il Kim

IPC分类号： B41J29/38

CPC分类号： B41J11/42 ,  Y10S271/902

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20060192839A1

公开(公告)日：2006-08-31

申请号：US11320729

申请日：2005-12-30

申请人： Hyoung-il Kim ,  Kyung-pyo Kang

发明人： Hyoung-il Kim ,  Kyung-pyo Kang

IPC分类号： B41J2/36

CPC分类号： B41J2/36

摘要： 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.

摘要翻译： 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。