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    Optical writer, image forming apparatus, and method of controlling optical writer
    41.
    发明授权
    Optical writer, image forming apparatus, and method of controlling optical writer 有权
    光学写入器，图像形成装置和控制光学写入器的方法

    公开(公告)号：US08395648B2

    公开(公告)日：2013-03-12

    申请号：US13046893

    申请日：2011-03-14

    申请人： Tatsuya Miyadera ,  Masayuki Hayashi ,  Yoshinori Shirasaki

    发明人： Tatsuya Miyadera ,  Masayuki Hayashi ,  Yoshinori Shirasaki

    IPC分类号： B41J2/435 ,  B41J2/47

    CPC分类号： B41J2/473 ,  G02B26/123 ,  G02B26/127 ,  G03G15/043 ,  G06K15/1219 ,  H04N1/113 ,  H04N2201/0477

    摘要： An optical writer includes a scanning part causing a light beam from a light source to perform scanning on a photosensitive body; an image information obtaining part obtaining image information of an image; a dithering information obtaining part obtaining dithering information of the image; a pixel clock generating part generating a pixel clock signal; and a light emission control part to control the light source based on the image information in accordance with the pixel clock signal. The pixel clock generating part modulates the clock frequency of the pixel clock signal in accordance with phase shift information for correcting a change in the speed of the scanning on main scanning lines on the photosensitive body, and determines the timing of modulating the clock frequency based on the dithering information on a main scanning line basis so that the timing of modulating the clock frequency differs between the main scanning lines.

    摘要翻译： 光学写入器包括使来自光源的光束在感光体上进行扫描的扫描部分; 获取图像的图像信息的图像信息获取部分; 抖动信息获取部分获得图像的抖动信息; 产生像素时钟信号的像素时钟产生部分; 以及发光控制部，其根据像素时钟信号基于图像信息来控制光源。 像素时钟生成部根据用于校正感光体上的主扫描线上的扫描速度的变化的相移信息来调制像素时钟信号的时钟频率，并且基于 在主扫描线基础上的抖动信息，使得调制时钟频率的定时在主扫描线之间不同。

    IMAGE FORMING APPARATUS AND METHOD OF ADJUSTING IMAGE
    42.
    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
    43.
    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
    44.
    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。

    Image forming method
    45.
    发明授权
    Image forming method 有权
    图像形成方法

    公开(公告)号：US08803935B2

    公开(公告)日：2014-08-12

    申请号：US13898616

    申请日：2013-05-21

    申请人： Tatsuya Miyadera ,  Kunihiro Komai

    发明人： Tatsuya Miyadera ,  Kunihiro Komai

    IPC分类号： B41J2/435 ,  B41J2/47

    CPC分类号： G03G15/0435 ,  G02B26/123 ,  G03G15/011 ,  G03G15/326 ,  G03G2215/0161 ,  G03G2215/0404 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/506 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04713 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04786 ,  H04N2201/04793 ,  H04N2201/04794

    摘要： An apparatus to form plural images on an image conveyor includes plural photoconductor bodies, a light exposure device, a development device, a transfer device, and a pattern detection device, wherein the light exposure device includes an optical scanning part, a first light detection part having a first light receiving face, a second light detection part having a second light receiving face being non-parallel to the first light receiving face, a third light detection part having a third light receiving face being non-parallel to the first light receiving face, the optical scanning part, the first light detection part, and the second light detection part being provided inside a housing of the light exposure device, the third light detection part being provided outside the housing, and a light exposure timing control device.

    摘要翻译： 在图像传送器上形成多个图像的装置包括多个感光体，曝光装置，显影装置，转印装置和图案检测装置，其中曝光装置包括光学扫描部分，第一光检测部分 具有第一受光面的第二光检测部，具有与第一受光面不平行的第二受光面的第二光检测部，具有与第一受光面不平行的第三光接收面的第三光检测部， 光学扫描部分，第一光检测部分和第二光检测部分设置在曝光装置的壳体内，第三光检测部分设置在外壳的外部，以及曝光定时控制装置。

    Light source control circuit, image forming apparatus, and method of controlling the light source control circuit
    46.
    发明授权
    Light source control circuit, image forming apparatus, and method of controlling the light source control circuit 有权
    光源控制电路，图像形成装置以及光源控制电路的控制方法

    公开(公告)号：US08487973B2

    公开(公告)日：2013-07-16

    申请号：US13315417

    申请日：2011-12-09

    申请人： Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera

    发明人： Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera

    IPC分类号： B41J2/435 ,  B41J2/385

    CPC分类号： B41J2/447 ,  B41J2/473 ,  G02B26/127 ,  G06K15/1219

    摘要： An optical writing device forms an electrostatic latent image on a photosensitive element by a connected light source controlled by a light source control circuit that includes: a pixel data output unit; a pixel data correcting unit that corrects a skew between main scanning line of electrostatic latent image and photosensitive element and a local deviation of the electrostatic latent image on the main scanning line, and outputs pixel data; a pattern generating unit that outputs pixel data for forming a predetermined pattern in an electrostatic latent image; a first light source control unit for causing a first light source, that needs correction of the local deviation, to emit light; a second light source control unit for causing a second light source, that does not need correction of the local deviation, to emit light; and a switch that switches between a first transmission status and a second transmission status.

    摘要翻译： 光学写入装置通过由光源控制电路控制的连接的光源在感光元件上形成静电潜像，该光源控制电路包括：像素数据输出单元; 像素数据校正单元，其校正静电潜像的主扫描线与感光元件之间的偏斜和主扫描线上的静电潜像的局部偏差，并输出像素数据; 图案生成单元，其输出用于在静电潜像中形成预定图案的像素数据; 第一光源控制单元，用于使需要校正局部偏差的第一光源发光; 第二光源控制单元，用于使不需要校正局部偏差的第二光源发光; 以及在第一传输状态和第二传输状态之间切换的开关。

    Light source control circuit, image forming apparatus, and method of controlling the light source control circuit
    47.
    发明授权
    Light source control circuit, image forming apparatus, and method of controlling the light source control circuit 有权
    光源控制电路，图像形成装置以及光源控制电路的控制方法

    公开(公告)号：US08723905B2

    公开(公告)日：2014-05-13

    申请号：US13941655

    申请日：2013-07-15

    申请人： Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera

    发明人： Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera

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

    CPC分类号： B41J2/447 ,  B41J2/473 ,  G02B26/127 ,  G06K15/1219

    摘要： An optical writing device forms an electrostatic latent image on a photosensitive element by a connected light source controlled by a light source control circuit that includes: a pixel data output unit; a pixel data correcting unit that corrects a skew between main scanning line of electrostatic latent image and photosensitive element and a local deviation of the electrostatic latent image on the main scanning line, and outputs pixel data; a pattern generating unit that outputs pixel data for forming a predetermined pattern in an electrostatic latent image; a first light source control unit for causing a first light source, that needs correction of the local deviation, to emit light; a second light source control unit for causing a second light source, that does not need correction of the local deviation, to emit light; and a switch that switches between a first transmission status and a second transmission status.

    摘要翻译： 光学写入装置通过由光源控制电路控制的连接的光源在感光元件上形成静电潜像，该光源控制电路包括：像素数据输出单元; 像素数据校正单元，其校正静电潜像的主扫描线与感光元件之间的偏斜和主扫描线上的静电潜像的局部偏差，并输出像素数据; 图案生成单元，其输出用于在静电潜像中形成预定图案的像素数据; 第一光源控制单元，用于使需要校正局部偏差的第一光源发光; 第二光源控制单元，用于使不需要校正局部偏差的第二光源发光; 以及在第一传输状态和第二传输状态之间切换的开关。

    LIGHT SOURCE CONTROL CIRCUIT, IMAGE FORMING APPARATUS, AND METHOD OF CONTROLLING THE LIGHT SOURCE CONTROL CIRCUIT
    48.
    发明申请
    LIGHT SOURCE CONTROL CIRCUIT, IMAGE FORMING APPARATUS, AND METHOD OF CONTROLLING THE LIGHT SOURCE CONTROL CIRCUIT 有权
    光源控制电路，图像形成装置以及控制光源控制电路的方法

    公开(公告)号：US20120147116A1

    公开(公告)日：2012-06-14

    申请号：US13315417

    申请日：2011-12-09

    申请人： Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera

    发明人： Izumi Kinoshita ,  Kunihiro Komai ,  Tatsuya Miyadera

    IPC分类号： B41J2/385

    CPC分类号： B41J2/447 ,  B41J2/473 ,  G02B26/127 ,  G06K15/1219

    摘要： An optical writing device forms an electrostatic latent image on a photosensitive element by a connected light source controlled by a light source control circuit that includes: a pixel data output unit; a pixel data correcting unit that corrects a skew between main scanning line of electrostatic latent image and photosensitive element and a local deviation of the electrostatic latent image on the main scanning line, and outputs pixel data; a pattern generating unit that outputs pixel data for forming a predetermined pattern in an electrostatic latent image; a first light source control unit for causing a first light source, that needs correction of the local deviation, to emit light; a second light source control unit for causing a second light source, that does not need correction of the local deviation, to emit light; and a switch that switches between a first transmission status and a second transmission status.

    摘要翻译： 光学写入装置通过由光源控制电路控制的连接的光源在感光元件上形成静电潜像，该光源控制电路包括：像素数据输出单元; 像素数据校正单元，其校正静电潜像的主扫描线与感光元件之间的偏斜和主扫描线上的静电潜像的局部偏差，并输出像素数据; 图案生成单元，其输出用于在静电潜像中形成预定图案的像素数据; 第一光源控制单元，用于使需要校正局部偏差的第一光源发光; 第二光源控制单元，用于使不需要校正局部偏差的第二光源发光; 以及在第一传输状态和第二传输状态之间切换的开关。