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    Image forming apparatus which forms image data indicating whether a pixel is for a character or line
    2.
    发明授权
    Image forming apparatus which forms image data indicating whether a pixel is for a character or line 有权
    图像形成装置，其形成指示像素是针对字符还是线的图像数据

    公开(公告)号：US09466016B2

    公开(公告)日：2016-10-11

    申请号：US14796385

    申请日：2015-07-10

    申请人： Muneaki Iwata ,  Masaaki Ishida ,  Atsufumi Omori ,  Naoto Watanabe ,  Hayato Fujita

    发明人： Muneaki Iwata ,  Masaaki Ishida ,  Atsufumi Omori ,  Naoto Watanabe ,  Hayato Fujita

    IPC分类号： G06F15/00 ,  G06K1/00 ,  G06K15/02 ,  G06K15/14 ,  G06F3/12 ,  G06K15/00

    CPC分类号： G06K15/1874 ,  G06F3/1208 ,  G06F3/122 ,  G06K15/14 ,  G06K15/1822 ,  G06K15/4055 ,  H04N1/40062 ,  H04N1/40068

    摘要： An apparatus includes an image-processing-unit that generates tag information indicating whether each of pixels of a first-resolution image data is a pixel of a character or a line, a resolution-converting-unit that converts the first-resolution image data to image data with a second resolution higher than the first resolution, and a light-source-driving-unit that drives light-source according to the second-resolution image data. The resolution-converting-unit includes an image-matrix-acquiring-unit that acquires an image matrix being image data and tag information with the first resolution in an area containing a target-pixel and pixels around the target-pixel, a pattern-matching-unit that determines whether the target-pixel is a pixel of an edge of a character or a line based on the image matrix, and a first-converting-unit that, when the pixel is the edge pixel, converts the image data to image data with the second resolution of a pattern determined in accordance with a layout of the target-pixel.

    摘要翻译： 一种装置，包括：图像处理单元，生成指示第一分辨率图像数据的每个像素是字符或行的像素的标签信息;将第一分辨率图像数据转换为 具有比第一分辨率高的第二分辨率的图像数据，以及根据第二分辨率图像数据驱动光源的光源驱动单元。 分辨率转换单元包括图像矩阵获取单元，其在包含目标像素和目标像素周围的像素的区域中获取作为图像数据的图像矩阵和具有第一分辨率的标签信息，模式匹配 - 基于图像矩阵确定目标像素是字符边缘还是直线的像素的单位，以及当像素为边缘像素时，将图像数据转换为图像的第一转换单元 具有根据目标像素的布局确定的图案的第二分辨率的数据。

    Image forming apparatus, image forming method, and method of producing printed material for generating a parallel line pattern of uniform concentration
    3.
    发明授权
    Image forming apparatus, image forming method, and method of producing printed material for generating a parallel line pattern of uniform concentration 有权
    图像形成装置，图像形成方法以及用于产生均匀浓度的平行线图案的印刷材料的制造方法

    公开(公告)号：US09298122B2

    公开(公告)日：2016-03-29

    申请号：US14268463

    申请日：2014-05-02

    申请人： Muneaki Iwata ,  Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita

    发明人： Muneaki Iwata ,  Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita

    IPC分类号： G06K15/00 ,  H04N1/40 ,  G03G15/043 ,  H04N1/405 ,  H04N1/409 ,  G03G15/04

    CPC分类号： G03G15/043 ,  G03G15/04027 ,  H04N1/40068 ,  H04N1/4058 ,  H04N1/4092

    摘要： An image forming apparatus includes: a pseudo-halftone processing unit that processes input image data to output image data of first resolution; a resolution converting unit that converts the image data of the first resolution into image data of second resolution that is higher than the first resolution; a modulation-signal generating unit that generates a modulation signal obtained by modulating the image data of the second resolution according to a clock signal; and a light-source driving unit that drives a light source according to the modulation signal. The pseudo-halftone processing unit converts a region of pixels having the same pixel value into a parallel line pattern that is formed with a plurality of parallel lines oblique relative to a direction of arrangement of pixels. The resolution converting unit generates the image data o in which each edge of the lines forming the parallel line pattern is smoothed.

    摘要翻译： 一种图像形成装置包括：伪半色调处理单元，其处理输入图像数据以输出第一分辨率的图像数据; 分辨率转换单元，其将第一分辨率的图像数据转换成高于第一分辨率的第二分辨率的图像数据; 调制信号生成单元，其生成通过根据时钟信号调制所述第二分辨率的图像数据而获得的调制信号; 以及根据调制信号驱动光源的光源驱动单元。 伪半色调处理单元将具有相同像素值的像素的区域转换为平行线图案，该平行线图案形成有相对于像素排列方向倾斜的多条平行线。 分辨率转换单元生成图像数据o，其中形成平行线图案的线的每个边缘被平滑化。

    Image forming apparatus
    6.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号：US08610971B2

    公开(公告)日：2013-12-17

    申请号：US13275794

    申请日：2011-10-18

    申请人： Atsufumi Omori ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Muneaki Iwata

    发明人： Atsufumi Omori ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Muneaki Iwata

    IPC分类号： H04N1/04

    CPC分类号： H04N1/506 ,  G03G15/5058 ,  H04N1/0473 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04781 ,  H04N2201/04793

    摘要： An image forming apparatus that forms an image includes: a photosensitive element; an optical scanning device that includes a light source, and scans a surface of the photosensitive element in a main scanning direction with light emitted from the light source to form a latent image; a developing unit that develops the latent image; a photosensitive element period detecting sensor that detects a rotation period of the photosensitive element; a density sensor that detects a density variation of an image developed by the developing unit, in a sub scanning direction; and a processing device that corrects a driving signal of the light source according to the image information, based on an output signal of the density sensor and an output signal of the photosensitive element period detecting sensor.

    摘要翻译： 形成图像的图像形成装置包括：感光元件; 光学扫描装置，其包括光源，并且利用从所述光源发射的光来在所述主扫描方向上扫描所述感光元件的表面以形成潜像; 显影单元，其显影潜像; 感光元件周期检测传感器，其检测感光元件的旋转周期; 密度传感器，其检测由所述显影单元在副扫描方向上显影的图像的浓度变化; 以及处理装置，其基于密度传感器的输出信号和感光元件周期检测传感器的输出信号，根据图像信息校正光源的驱动信号。

    Light-source driving device, optical scanning device, and image forming apparatus
    7.
    发明授权
    Light-source driving device, optical scanning device, and image forming apparatus 有权
    光源驱动装置，光扫描装置和图像形成装置

    公开(公告)号：US08310513B2

    公开(公告)日：2012-11-13

    申请号：US12693775

    申请日：2010-01-26

    申请人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori

    发明人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori

    IPC分类号： B41J2/47

    CPC分类号： B41J2/473 ,  G02B26/10 ,  G03G15/04072 ,  G03G15/0435 ,  G03G2215/0404 ,  G06K15/1261 ,  H04N1/02865 ,  H04N1/113 ,  H04N2201/04767

    摘要： In a light-source driving device, a high-frequency clock generating circuit generates two high-frequency clock signals having mutually different phases, an image-data creating circuit creates a plurality of image data corresponding to a plurality of light-emitting units according to image information, and a write control circuit creates a plurality of modulated data corresponding to the light-emitting units from the plurality of image data and separately controls output timings of the plurality of modulated data by using a time, as a unit, corresponding to a phase difference between the two high-frequency clock signals. The write control circuit includes two data switching circuits that set a correspondence relation between image data and PWM data based on one of a relation between an array of the light-emitting units and an array of a plurality of light spots and a relation between a surface to be scanned and a main scanning direction.

    摘要翻译： 在光源驱动装置中，高频时钟生成电路生成具有相互不同相位的两个高频时钟信号，图像数据生成电路根据与图像数据生成电路对应的多个发光单元生成多个图像数据 图像信息和写入控制电路从多个图像数据创建对应于发光单元的多个调制数据，并且通过使用对应于一个单元的时间单独地控制多个调制数据的输出定时 两个高频时钟信号之间的相位差。 写控制电路包括两个数据切换电路，其基于发光单元的阵列与多个光点的阵列之间的关系和表面之间的关系之一来设置图像数据和PWM数据之间的对应关系 被扫描和主扫描方向。

    Optical scanning device, optical scanning method, and image forming apparatus
    8.
    发明授权
    Optical scanning device, optical scanning method, and image forming apparatus 有权
    光学扫描装置，光学扫描方法和图像形成装置

    公开(公告)号：US07995251B2

    公开(公告)日：2011-08-09

    申请号：US12055666

    申请日：2008-03-26

    申请人： Jun Tanabe ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori

    发明人： Jun Tanabe ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori

    IPC分类号： H04N1/04

    CPC分类号： G02B26/123 ,  G02B26/124 ,  H04N1/40068

    摘要： A light-source drive control unit divides each pixel of the image data into a plurality of subpixels, deletes certain subpixels from the image data in accordance with predetermined correction data, shifts remaining subpixels in the sub-scanning direction thereby obtaining reduced image data, and controls a plurality of light sources based on the reduced image data in such a manner that one line of the subpixels is formed with a light beam emitted from a corresponding one of the light sources.

    摘要翻译： 光源驱动控制单元将图像数据的每个像素分成多个子像素，根据预定的校正数据从图像数据中删除某些子像素，在副扫描方向上移动剩余的子像素，从而获得缩小的图像数据，以及 基于缩小图像数据控制多个光源，使得一行子像素由从相应的一个光源发射的光束形成。

    Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus
    9.
    发明授权
    Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus 有权
    像素时钟创建方法，像素时钟创建装置，光学扫描装置和图像形成装置

    公开(公告)号：US07834902B2

    公开(公告)日：2010-11-16

    申请号：US11741871

    申请日：2007-04-30

    申请人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa

    发明人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa

    IPC分类号： B41J2/435

    CPC分类号： G02B26/127 ,  G06K15/1219

    摘要： In a pixel clock creation method and device, a high frequency clock is created. A scanning time needed to scan a predetermined scanning length is detected in accuracy of half a period of the high frequency clock to output a detection value indicating the detected scanning time. The detection value and a predetermined target value are compared to output a comparison result. A phase data is created based on the comparison result. A pixel clock whose phase is controlled based on both the high frequency clock and the phase data is created.

    摘要翻译： 在像素时钟创建方法和装置中，产生高频时钟。 以高频时钟的半周期的精度检测扫描预定扫描长度所需的扫描时间，以输出指示检测到的扫描时间的检测值。 将检测值和预定目标值进行比较以输出比较结果。 基于比较结果创建相位数据。 创建基于高频时钟和相位数据来控制相位的像素时钟。