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    Image forming apparatus and image density detecting method
    3.
    发明授权
    Image forming apparatus and image density detecting method 有权
    图像形成装置和图像浓度检测方法

    公开(公告)号：US08654419B2

    公开(公告)日：2014-02-18

    申请号：US13415082

    申请日：2012-03-08

    申请人： Susumu Miyazaki ,  Izumi Kinoshita ,  Motohiro Kawanabe ,  Takeshi Shikama ,  Takuhei Yokoyama ,  Tatsuya Miyadera

    发明人： Susumu Miyazaki ,  Izumi Kinoshita ,  Motohiro Kawanabe ,  Takeshi Shikama ,  Takuhei Yokoyama ,  Tatsuya Miyadera

    IPC分类号： H04N1/46

    CPC分类号： H04N1/3878 ,  H04N1/407 ,  H04N1/409

    摘要： An image forming apparatus performs pseudo gradation processing using dithering, and includes an image carrier; a plurality of light-emitting element arrays arranged in a main-scanning direction and including a plurality of light-emitting elements; an image forming unit performing lighting control of the arrays and forming a pattern image on the image carrier; a detecting unit detecting a density of the pattern image; a position detecting unit detecting a position in the main-scanning direction of the detecting unit with respect to the light-emitting element arrays; a determining unit that, based on the detected position, determines whether the detecting unit is positioned at a proper detection position with respect to the pattern image on which noise has no effect; and an operation control unit that, when the detecting unit is positioned at the proper detection position, performs an image density detection operation on the pattern image using the detecting unit.

    摘要翻译： 图像形成装置使用抖动进行伪灰度处理，并且包括图像载体; 沿主扫描方向排列并包括多个发光元件的多个发光元件阵列; 图像形成单元，对所述阵列执行点亮控制，并在所述图像载体上形成图案图像; 检测单元，检测图案图像的浓度; 位置检测单元，相对于所述发光元件阵列检测所述检测单元的主扫描方向的位置; 确定单元，其基于所检测的位置，确定所述检测单元是否位于相对于其上没有影响的图案图像的适当检测位置; 以及操作控制单元，当所述检测单元位于适当的检测位置时，使用所述检测单元对所述图案图像执行图像浓度检测操作。

    Method of compensating for errors caused by a print head using skew correction
    4.
    发明授权
    Method of compensating for errors caused by a print head using skew correction 失效
    使用偏斜校正补偿由打印头造成的误差的方法

    公开(公告)号：US08600283B2

    公开(公告)日：2013-12-03

    申请号：US13444018

    申请日：2012-04-11

    申请人： Izumi Kinoshita ,  Tatsuya Miyadera ,  Motohiro Kawanabe ,  Takeshi Shikama ,  Susumu Miyazaki ,  Takuhei Yokoyama

    发明人： Izumi Kinoshita ,  Tatsuya Miyadera ,  Motohiro Kawanabe ,  Takeshi Shikama ,  Susumu Miyazaki ,  Takuhei Yokoyama

    IPC分类号： G03G15/00 ,  G06F3/12

    CPC分类号： G03G15/5058 ,  B41J2/45 ,  G03G2215/0141 ,  G03G2215/0161 ,  G06K15/1247 ,  G06K15/1868

    摘要： An image forming apparatus includes plural image forming units of plural colors, each including a print head including plural LED chips aligned in a main scanning direction; a screen angle selecting unit that selects screen angles for the plural colors respectively based on the amounts of skew of the plural image forming units; an image processing unit that performs image processing on input data to be expressed by pixels of the plural colors such that the pixels of the colors have the corresponding screen angles selected by the screen angle selecting unit; a correction amount determining unit that determines a total amount of skew correction based on the amount of skew detected by the skew detection unit, and determines the amounts of skew correction in the sub-scanning direction for predetermined groups of the pixels, based on the total amount of skew correction, for each of the colors.

    摘要翻译： 图像形成装置包括多个颜色的图像形成单元，每个图像形成单元包括在主扫描方向上排列的多个LED芯片的打印头; 屏幕角度选择单元，分别基于多个图像形成单元的偏斜量来选择多种颜色的屏幕角度; 图像处理单元，对由多个颜色的像素表示的输入数据执行图像处理，使得颜色的像素具有由屏幕角度选择单元选择的相应屏幕角度; 校正量确定单元，其基于由所述歪斜检测单元检测到的歪斜量来确定歪斜校正的总量，并且基于总计来确定预定组像素的副扫描方向上的歪斜校正量 每种颜色的偏斜校正量。

    Line-head control device, image forming apparatus, and line-head control method
    6.
    发明授权
    Line-head control device, image forming apparatus, and line-head control method 有权
    线头控制装置，图像形成装置和线头控制方法

    公开(公告)号：US08817320B2

    公开(公告)日：2014-08-26

    申请号：US13300834

    申请日：2011-11-21

    申请人： Yoshinori Shirasaki ,  Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera ,  Takeshi Shikama ,  Takuhei Yokoyama ,  Akinori Yamaguchi

    发明人： Yoshinori Shirasaki ,  Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera ,  Takeshi Shikama ,  Takuhei Yokoyama ,  Akinori Yamaguchi

    IPC分类号： G06F15/00 ,  G06K15/12 ,  G06K15/02

    CPC分类号： G06K15/1247 ,  G06K15/1223 ,  G06K15/1868

    摘要： A line-head control device that controls a line head includes: a calculation unit that divides image data into a plurality of areas in sub-scanning direction and calculates a printing percentage for each of the areas; an allocation unit that allocates a total correction amount, for correcting magnification of the image data in the sub-scanning direction, to the areas according to the printing percentage for each of the areas calculated by the calculation unit; and a control unit that changes an emission period of the light emitted from the line head so as to satisfy a partial correction amount that is an allocation of the total correction amount to each of the areas, exposes the image carrier to the light emitted from the line head with the changed light emission period, thereby causing a latent image to be formed on the image carrier based on the image data.

    摘要翻译： 控制行头的行头控制装置包括：计算单元，其将图像数据分割成副扫描方向的多个区域，并计算每个区域的打印百分比; 分配单元，其分配用于将副扫描方向上的图像数据的倍率校正到根据由计算单元计算出的每个区域的打印百分比的区域的总校正量; 以及控制单元，其改变从线路头发射的光的发射周期以满足作为对每个区域的总校正量的分配的部分校正量，将图像载体暴露于从 具有改变的发光周期的线头，从而基于图像数据在图像载体上形成潜像。

    Light emission control device, light emission control method, and image forming apparatus
    8.
    发明授权
    Light emission control device, light emission control method, and image forming apparatus 失效
    发光控制装置，发光控制方法和图像形成装置

    公开(公告)号：US08547409B2

    公开(公告)日：2013-10-01

    申请号：US13307865

    申请日：2011-11-30

    申请人： Takuhei Yokoyama ,  Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera ,  Yoshinori Shirasaki ,  Takeshi Shikama ,  Akinori Yamaguchi

    发明人： Takuhei Yokoyama ,  Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera ,  Yoshinori Shirasaki ,  Takeshi Shikama ,  Akinori Yamaguchi

    IPC分类号： B41J2/435

    CPC分类号： B41J2/45 ,  G03G15/04054 ,  G03G15/043 ,  G03G15/5008 ,  G03G15/5033 ,  G03G15/505 ,  G03G21/145 ,  G03G2215/0132 ,  G03G2215/0409

    摘要： A light emission control device images an electrostatic latent image on a photosensitive element by a plurality of light emitting elements corresponding to a line in a second direction perpendicular to a first direction which is a rotational direction the photosensitive element. The light emission control device includes: a detecting unit that detects a rotational position of the photosensitive element, in the first direction, corresponding to a line in the second direction; an acquiring unit that acquires a distance between the light emitting elements and the rotational position of the photosensitive element in the first direction detected by the detecting unit; and a control unit that controls light emission by the light emitting elements according to the distance acquired by the acquiring unit and corrects a fluctuation in a density of a visible image converted from the electrostatic latent image.

    摘要翻译： 发光控制装置通过与作为感光元件的旋转方向的第一方向垂直的第二方向上的线对应的多个发光元件将感光元件上的静电潜像成像。 发光控制装置包括：检测单元，其在与第二方向上的线对应的第一方向上检测感光元件的旋转位置; 获取单元，其获取由所述检测单元检测到的所述发光元件与所述感光元件在所述第一方向上的旋转位置之间的距离; 以及控制单元，其根据由所述获取单元获取的距离来控制所述发光元件的发光，并校正从所述静电潜像转换的可见图像的浓度的波动。

    Optical writing device, image forming apparatus, and method and program product for controlling optical writing device
    9.
    发明授权
    Optical writing device, image forming apparatus, and method and program product for controlling optical writing device 有权
    光写入装置，图像形成装置以及用于控制光写入装置的方法和程序产品

    公开(公告)号：US08482588B2

    公开(公告)日：2013-07-09

    申请号：US13230104

    申请日：2011-09-12

    申请人： Tatsuya Miyadera ,  Kunihiro Komai ,  Izumi Kinoshita ,  Yoshinori Shirasaki ,  Takeshi Shikama ,  Takuhei Yokoyama ,  Akinori Yamaguchi

    发明人： Tatsuya Miyadera ,  Kunihiro Komai ,  Izumi Kinoshita ,  Yoshinori Shirasaki ,  Takeshi Shikama ,  Takuhei Yokoyama ,  Akinori Yamaguchi

    IPC分类号： B41J2/385 ,  B41J2/435 ,  B41J2/47

    CPC分类号： G03G15/043 ,  H04N1/3878

    摘要： An optical writing device that forms an electrostatic latent image on a photoreceptor. The device includes a pixel-information acquiring unit, a line-pixel-information storage unit that stores the acquired pixel information corresponding to a plurality of lines for each main scanning line, a light source device that exposes the photoreceptor with a period corresponding to an N-fold sub-scanning direction resolution of the pixel information, a positional-shift-information storage unit that stores a positional shift information, a sub-line counting unit that counts a sub-line period, a reading-line selecting unit that performs N times of selection that determines which main scanning line is selected as the line from which the pixel information is read out, on the basis of a calculated value from the counted value of the sub-line period and the positional shift information, and a pixel-information reading unit.

    摘要翻译： 一种在感光体上形成静电潜像的光学写入装置。 该装置包括：像素信息获取单元，存储与每个主扫描线对应的多行的所获取的像素信息的行像素信息存储单元，以与对应于 像素信息的N倍副扫描方向分辨率，存储位置偏移信息的位置偏移信息存储单元，对子行周期进行计数的子行计数单元，执行的读取行选择单元 基于从子行周期的计数值和位置偏移信息的计算值，确定选择哪个主扫描线作为从其读出像素信息的行的选择的N次，以及像素 信息阅读单位。

    LIGHT EMISSION CONTROL DEVICE, LIGHT EMISSION CONTROL METHOD, AND IMAGE FORMING APPARATUS
    10.
    发明申请
    LIGHT EMISSION CONTROL DEVICE, LIGHT EMISSION CONTROL METHOD, AND IMAGE FORMING APPARATUS 失效
    光发射控制装置，光发射控制方法和图像形成装置

    公开(公告)号：US20120147114A1

    公开(公告)日：2012-06-14

    申请号：US13307865

    申请日：2011-11-30

    申请人： Takuhei YOKOYAMA ,  Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera ,  Yoshinori Shirasaki ,  Takeshi Shikama ,  Akinori Yamaguchi

    发明人： Takuhei YOKOYAMA ,  Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera ,  Yoshinori Shirasaki ,  Takeshi Shikama ,  Akinori Yamaguchi

    IPC分类号： B41J2/385

    CPC分类号： B41J2/45 ,  G03G15/04054 ,  G03G15/043 ,  G03G15/5008 ,  G03G15/5033 ,  G03G15/505 ,  G03G21/145 ,  G03G2215/0132 ,  G03G2215/0409

    摘要： A light emission control device images an electrostatic latent image on a photosensitive element by a plurality of light emitting elements corresponding to a line in a second direction perpendicular to a first direction which is a rotational direction the photosensitive element. The light emission control device includes: a detecting unit that detects a rotational position of the photosensitive element, in the first direction, corresponding to a line in the second direction; an acquiring unit that acquires a distance between the light emitting elements and the rotational position of the photosensitive element in the first direction detected by the detecting unit; and a control unit that controls light emission by the light emitting elements according to the distance acquired by the acquiring unit and corrects a fluctuation in a density of a visible image converted from the electrostatic latent image.

    摘要翻译： 发光控制装置通过与作为感光元件的旋转方向的第一方向垂直的第二方向上的线对应的多个发光元件将感光元件上的静电潜像成像。 发光控制装置包括：检测单元，其在与第二方向上的线对应的第一方向上检测感光元件的旋转位置; 获取单元，其获取由所述检测单元检测到的所述发光元件与所述感光元件在所述第一方向上的旋转位置之间的距离; 以及控制单元，其根据由所述获取单元获取的距离来控制所述发光元件的发光，并校正从所述静电潜像转换的可见图像的浓度的波动。