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    IMAGE FORMING APPARATUS AND METHOD OF ADJUSTING IMAGE
    3.
    发明申请
    IMAGE FORMING APPARATUS AND METHOD OF ADJUSTING IMAGE 失效
    图像形成装置和调整图像的方法

    公开(公告)号：US20120262750A1

    公开(公告)日：2012-10-18

    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： G06K15/00

    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。

    Image forming apparatus and image density detecting method
    4.
    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
    5.
    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。

    OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, AND METHOD OF CONTROLLING OPTICAL WRITING DEVICE
    8.
    发明申请
    OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, AND METHOD OF CONTROLLING OPTICAL WRITING DEVICE 有权
    光学写入装置，图像形成装置以及控制光学写入装置的方法

    公开(公告)号：US20140139607A1

    公开(公告)日：2014-05-22

    申请号：US13683248

    申请日：2012-11-21

    申请人： Masayuki Hayashi ,  Yoshinori Shirasaki ,  Kunihiro Komai ,  Hiroaki Ikeda ,  Takeshi Shikama ,  Akinori Yamaguchi ,  Takuhei Yokoyama ,  Motohiro Kawanabe ,  Tatsuya Miyadera

    发明人： Masayuki Hayashi ,  Yoshinori Shirasaki ,  Kunihiro Komai ,  Hiroaki Ikeda ,  Takeshi Shikama ,  Akinori Yamaguchi ,  Takuhei Yokoyama ,  Motohiro Kawanabe ,  Tatsuya Miyadera

    IPC分类号： B41J2/435

    CPC分类号： B41J2/45 ,  G03G15/04054 ,  G03G15/043 ,  G03G21/08

    摘要： An optical writing device is configured to form electrostatic latent images on a plurality of photosensitive elements by a plurality of light sources. The optical writing device includes: an image-data acquiring section that acquires image data; and a light-source control section that performs light-emission control on the light source based on pixel data generated from acquired image data, and also performs a neutralization process on the photosensitive element by controlling the light source to expose the photosensitive element to light. In the neutralization process, the light-source control section divides a period during which light-on/off control can be performed on the light source, into sub-periods based on pixel data input to the light-source control section, and causes the light sources to be lit in any one of the sub-periods so as to always place at least one of the plurality of light sources in a light-off state.

    摘要翻译： 光学写入装置被配置为通过多个光源在多个光敏元件上形成静电潜像。 光写入装置包括：图像数据获取部，其获取图像数据; 以及光源控制部，其基于从所获取的图像数据生成的像素数据对光源进行发光控制，并且还通过控制光源将光敏元件曝光以对光敏元件进行中和处理。 在中和处理中，光源控制部根据输入到光源控制部的像素数据，将能够对光源进行点亮/熄灭控制的期间分割成子周期， 在任何一个子周期中要点亮的光源，以便总是将多个光源中的至少一个光源置于熄灭状态。