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    • 1. 发明授权
    • Image forming apparatus and image forming method thereof
    • 图像形成装置及其图像形成方法
    • US09001379B2
    • 2015-04-07
    • US12801158
    • 2010-05-25
    • Ho-Keun Lee
    • Ho-Keun Lee
    • G06F3/12H04N1/54H04N1/58H04N1/405H04N1/52H04N1/407H04N1/46G06K15/02G03G15/00H04N1/50
    • H04N1/506G03G15/50
    • An image forming apparatus includes an input part for receiving image data; an image processor for image-processing the input image data; an output part for outputting data processed at the image processor; and a controller for controlling the image processor to process the image using one of a plurality of image processing modes having a toner consumption lower than a toner density to use when the toner density to use for outputting the input image data exceeds a preset reference density. The plurality of the image processing modes includes a boundary image processing mode which outputs only boundaries of objects in the image data. Thus, the toner used for the image forming can be saved.
    • 图像形成装置包括用于接收图像数据的输入部分; 用于对输入图像数据进行图像处理的图像处理器; 用于输出在图像处理器处理的数据的输出部分; 以及控制器,用于当用于输出输入图像数据的调色剂浓度超过预设的参考密度时,使用具有低于调色剂密度的多个图像处理模式中的一个来控制图像处理器来处理图像。 多个图像处理模式包括仅输出图像数据中的对象的边界的边界图像处理模式。 因此,可以节省用于图像形成的调色剂。
    • 3. 发明授权
    • Inkjet image forming apparatus and method to control the same
    • 喷墨图像形成装置及其控制方法
    • US08544975B2
    • 2013-10-01
    • US12060400
    • 2008-04-01
    • Ho Keun Lee
    • Ho Keun Lee
    • B41J29/38
    • B41J29/393
    • An inkjet image forming apparatus and a method to control the same to correct characteristics of a plurality of print heads of the apparatus to have uniform characteristics includes a plurality of test patterns printed according to the timing of printing of dots through a row of odd nozzles and a row of even nozzles of each of the plurality of print heads and information of the drive timing corresponding to a brightest test pattern of the printed test patterns is stored. When a normal print operation is performed, a different drive timing is applied to each of the plurality of print heads based on the stored information, thereby compensating for the difference between the one or more characteristics of the print heads.
    • 一种喷墨图像形成装置及其控制方法,用于校正装置的多个打印头的特性以具有均匀的特性,包括根据通过奇数喷嘴列打印点的定时打印的多个测试图案,以及 存储多个打印头中的每一个的一排偶数喷嘴和对应于打印的测试图案的最亮测试图案的驱动定时的信息。 当执行正常的打印操作时,基于所存储的信息将不同的驱动定时应用于多个打印头中的每一个,从而补偿打印头的一个或多个特性之间的差异。
    • 6. 发明申请
    • IMAGE FORMING APPARATUS AND METHOD TO IMPROVE IMAGE QUALITY THEREOF
    • 图像形成装置和提高图像质量的方法
    • US20080309955A1
    • 2008-12-18
    • US11970615
    • 2008-01-08
    • Ho-keun LEESang-youn Shin
    • Ho-keun LEESang-youn Shin
    • B41J2/21H04N1/46
    • H04N1/4056
    • An image forming apparatus to improve image quality. The image forming apparatus includes a window control unit to generate a window of a predetermined size using a lines per inch (LPI) value of a dithering mask and an angle, and to detect locations of a center reference pixel and neighboring reference pixels in the window, a weighting set unit to apply weighted values to the reference pixels based on locations of the detected center reference pixel and the neighboring reference pixels, and a control unit to determine a dot size of the center reference pixel corresponding to weighted values corresponding to locations of black pixels of the center reference pixel and neighboring reference pixels. Accordingly, image quality is improved by generating dots corresponding to a plurality of gray levels based on weighted values.
    • 一种提高图像质量的图像形成装置。 图像形成装置包括:窗口控制单元,用于使用抖动掩模的每英寸行(LPI)值和角度来生成预定尺寸的窗口,并且检测窗口中的中心参考像素和相邻参考像素的位置 基于检测到的中心参考像素和相邻参考像素的位置将加权值应用于参考像素的加权设置单元,以及控制单元,用于确定对应于对应于位置的加权值的中心参考像素的点大小 中心参考像素和相邻参考像素的黑色像素。 因此,通过基于加权值产生与多个灰度级对应的点来提高图像质量。
    • 8. 发明授权
    • Image forming apparatus to save toner and method to control the same
    • 图像形成装置,以节省墨粉和控制方法
    • US08400694B2
    • 2013-03-19
    • US13469505
    • 2012-05-11
    • Ho Keun Lee
    • Ho Keun Lee
    • H04N1/46
    • H04N1/405H04N1/4056
    • An image forming apparatus to save toner, which can increase the sharpness of printed data (for example, images or characters) on a printing medium while achieving toner saving, and a method to control the same. The image forming apparatus includes a determinator, a storage unit, and a halftoning processor. The determinator receives a command signal to print and then determines whether or not the received command signal is a command signal for a toner saving mode. The storage unit stores a halftone table in which an LPI higher than a normal LPI is set. If the received command signal is a command signal for the toner saving mode, the halftoning processor generates and outputs halftoning result by comparing gray level values corresponding to pixels of received input image data with grayscale values of the stored halftone table.
    • 一种用于节省调色剂的图像形成装置,其可以在实现调色剂节省的同时增加打印介质上的打印数据(例如,图像或字符)的清晰度,以及控制该调色剂的方法。 图像形成装置包括确定器,存储单元和半色调处理器​​。 确定器接收打印命令信号,然后确定接收到的命令信号是否是用于调色剂节省模式的命令信号。 存储单元存储其中设置了高于正常LPI的LPI的半色调表。 如果接收的命令信号是用于调色剂保存模式的命令信号,则半色调处理器​​通过将与接收到的输入图像数据的像素相对应的灰度值与存储的半色调表的灰度值进行比较来产生并输出半色调结果。
    • 10. 发明申请
    • IMAGE FORMING APPARATUS TO SAVE TONER AND METHOD TO CONTROL THE SAME
    • 图像形成装置以保存调色剂及其控制方法
    • US20120250046A1
    • 2012-10-04
    • US13469505
    • 2012-05-11
    • Ho Keun LEE
    • Ho Keun LEE
    • H04N1/60
    • H04N1/405H04N1/4056
    • An image forming apparatus to save toner, which can increase the sharpness of printed data (for example, images or characters) on a printing medium while achieving toner saving, and a method to control the same. The image forming apparatus includes a determinator, a storage unit, and a halftoning processor. The determinator receives a command signal to print and then determines whether or not the received command signal is a command signal for a toner saving mode. The storage unit stores a halftone table in which an LPI higher than a normal LPI is set. If the received command signal is a command signal for the toner saving mode, the halftoning processor generates and outputs halftoning result by comparing gray level values corresponding to pixels of received input image data with grayscale values of the stored halftone table.
    • 一种用于节省调色剂的图像形成装置,其可以在实现调色剂节省的同时增加打印介质上的打印数据(例如,图像或字符)的清晰度,以及控制该调色剂的方法。 图像形成装置包括确定器,存储单元和半色调处理器​​。 确定器接收打印命令信号,然后确定接收到的命令信号是否是用于调色剂节省模式的命令信号。 存储单元存储其中设置了高于正常LPI的LPI的半色调表。 如果接收的命令信号是用于调色剂保存模式的命令信号,则半色调处理器​​通过将与接收到的输入图像数据的像素相对应的灰度值与存储的半色调表的灰度值进行比较来产生并输出半色调结果。