公开(公告)号：US11457121B2

公开(公告)日：2022-09-27

申请号：US17487278

申请日：2021-09-28

申请人： Takuhei Yokoyama ,  Masamoto Nakazawa ,  Tadaaki Oyama ,  Ayumu Hashimoto

发明人： Takuhei Yokoyama ,  Masamoto Nakazawa ,  Tadaaki Oyama ,  Ayumu Hashimoto

IPC分类号： H04N1/40 ,  H04N1/12 ,  H04N1/00 ,  H04N1/04

摘要： A reading device includes a first light source configured to emit light, a second light source configured to emit light in a wavelength of light different from a wavelength of light of the first light source, circuitry configured to instruct the first light source and the second light source to turn on and turn off, a first light-intensity adjuster configured to adjust light intensity of the first light source based on a first light intensity value, a second light-intensity adjuster configured to adjust light intensity of the second light source based on a second light intensity value, a first image sensor configured to receive the light that is emitted from the first light source and is reflected by an object, and a second image sensor configured to receive the light that is emitted from the first light source and the second light source and is reflected by the object.

公开(公告)号：US10542184B2

公开(公告)日：2020-01-21

申请号：US15878467

申请日：2018-01-24

申请人： Takuhei Yokoyama ,  Hiroki Shirado ,  Masamoto Nakazawa

发明人： Takuhei Yokoyama ,  Hiroki Shirado ,  Masamoto Nakazawa

IPC分类号： H04N1/58 ,  H04N5/367 ,  H04N5/361 ,  H04N5/369

摘要： A photoelectric conversion device includes a photoelectric conversion element to generate an image signal according to an intensity of light being input and circuitry. The circuitry obtains pixel values in dark time, respectively, for at least a first time and a second time. The second time is longer than the first time. The pixel values in dark time represent pixel values obtained when no light is input to the photoelectric conversion element. The circuitry obtains a subtraction between the pixel values for the first time and the pixel values for the second time. The circuitry detects a noise amount based on the subtraction. The circuitry determines at least one pixel having the detected noise amount that is equal to or greater than a predetermined first threshold value, as a defective pixel of the photoelectric conversion element.

公开(公告)号：US08879969B2

公开(公告)日：2014-11-04

申请号：US13644172

申请日：2012-10-03

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

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

IPC分类号： G03G15/01 ,  G03G15/00

CPC分类号： G03G15/0194 ,  G03G15/5058 ,  G03G2215/0141 ,  G03G2215/0161

摘要： An image forming apparatus can transfer a plurality of color component images onto a surface of a recording medium to form an image on the recording medium. The image forming apparatus includes a pattern generation part to generate information about an alignment pattern to be used for a calibration of an image forming, a plurality of stations each including a photosensitive drum to form an alignment pattern corresponding to each of a plurality of color components onto a carry belt or the recording medium, and a read part to detect a plurality of alignment patterns formed by the plurality of stations.

摘要翻译： 图像形成装置可以将多个颜色分量图像传送到记录介质的表面上，以在记录介质上形成图像。 图像形成装置包括图形生成部，用于生成关于图像形成校准所使用的对准图案的信息，多个工位各自包括感光鼓，以形成对应于多个颜色成分中的每一个的对准图案 携带或记录介质，以及读取部分，用于检测由多个台站形成的多个对准图案。

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。

公开(公告)号：US08774700B2

公开(公告)日：2014-07-08

申请号：US13224843

申请日：2011-09-02

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

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

IPC分类号： G03G15/00

CPC分类号： B65H7/08 ,  B65H2511/242 ,  B65H2511/514 ,  B65H2701/1311 ,  B65H2701/1313 ,  B65H2801/06 ,  G03G15/6567 ,  G03G2215/0161 ,  B65H2220/03 ,  B65H2220/01

摘要： An image processing apparatus includes a reading part configured to optically read skew amount measurement patterns and opposite ends of a paper sheet; an image skew amount detecting part configured to detect skew amounts on a color basis based on the skew amount measurement patterns; a paper sheet skew amount detecting part configured to detect a skew amount of the paper sheet based on a displacement between the opposite ends of the paper sheet; a skew correction amount calculating part configured to calculate skew correction amounts of the respective colors based on the skew amounts; and a skew correcting part configured to shift the images to correct the skews by recording input image data in plural lines of a line memory, dividing the input image data into plural areas in a main scanning direction, and setting line delay amounts on an area basis based on the skew correction amounts.

摘要翻译： 一种图像处理装置，包括读取部件，被配置为光学读取纸张的偏斜量测量图案和相对的两端; 图像偏移量检测部，被配置为基于所述偏斜量测量图案来检测基于颜色的倾斜量; 纸张歪斜量检测部件，被配置为基于纸张的相对端之间的位移来检测纸张的歪斜量; 歪斜校正量计算部，被配置为基于所述歪斜量来计算各颜色的倾斜校正量; 以及偏斜校正部，被配置为通过在行存储器的多行中记录输入图像数据来移位图像以校正偏差，将输入图像数据分割成主扫描方向的多个区域，并且基于区域设置线延迟量 基于偏斜校正量。

公开(公告)号：US09013532B2

公开(公告)日：2015-04-21

申请号：US13593705

申请日：2012-08-24

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

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

IPC分类号： G03G15/043 ,  B41J2/45 ,  B41J2/47 ,  G03G15/00

CPC分类号： G03G15/043 ,  B41J2/45 ,  B41J2/47 ,  G03G15/5033

摘要： A light source control apparatus which controls, based on image data input, light emission of a light source which forms an electrostatic latent image on an image bearing body in an electrophotographic image forming apparatus is disclosed, including a pattern generating unit which generates an internal pattern for position aligning and concentration correcting according to the image data; and a mirroring processing unit which performs a process of mirroring the image data and the internal pattern at a later stage of the pattern generating unit.

摘要翻译： 公开了一种基于图像数据输入控制在电子照相图像形成装置中的图像承载体上形成静电潜像的光源的发光的光源控制装置，其包括产生内部图案的图案生成单元 用于根据图像数据进行位置对准和浓度校正; 以及镜像处理单元，其在图案生成单元的稍后阶段执行镜像图像数据和内部图案的处理。

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。

公开(公告)号：US20120057889A1

公开(公告)日：2012-03-08

申请号：US13219974

申请日：2011-08-29

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

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

IPC分类号： G03G15/043

CPC分类号： G03G15/04054 ,  G03G15/5054 ,  G03G15/5058

摘要： An image processing apparatus for an image forming apparatus including a line head array that forms an image by illuminating one or more illumination elements in correspondence with image data. The image processing apparatus includes a detection part configured to detect a linear image extending in a sub-scanning direction in the image data, and an adjustment part configured to adjust a density of the linear image so that the energy used in illuminating the one or more illumination elements for forming the linear image is reduced compared to the energy used in forming the linear image without adjusting the density of the linear image.

摘要翻译： 一种用于图像形成装置的图像处理装置，包括：线阵列，其通过与图像数据对应地照射一个或多个照明元件来形成图像。 图像处理装置包括：检测部，被配置为检测在图像数据中沿副扫描方向延伸的线性图像;以及调整部，被配置为调整线性图像的浓度，使得用于照亮所述一个或多个 与用于形成线性图像的能量相比，用于形成线性图像的照明元件减少，而不调节线性图像的密度。

公开(公告)号：US20110043592A1

公开(公告)日：2011-02-24

申请号：US12862144

申请日：2010-08-24

申请人： Izumi KINOSHITA ,  Kunihiro Komai ,  Tatsuya Miyadera ,  Yoshinori Shirasaki ,  Takuhei Yokoyama

发明人： Izumi KINOSHITA ,  Kunihiro Komai ,  Tatsuya Miyadera ,  Yoshinori Shirasaki ,  Takuhei Yokoyama

IPC分类号： B41J2/435

CPC分类号： G06K15/1247

摘要： An optical writing device includes: a light source including arrays arranged in a main scanning direction, each array including light-emitting elements arranged in the main scanning direction; a correction-value holding unit to hold, correspondingly with a light-emitting element, a correction value for changing timing to read out pixel data stored in an image storage unit; and a light-source drive unit to drive the light source by reading out the stored pixel data stored, according to the correction value. The correction-value holding unit includes a first area for holding a first correction value corresponding to a first light-emitting element located at an end of an array and a second area for holding a second correction value corresponding to a second light-emitting element other than the first light-emitting element, the first holding area being larger than the second holding area.

摘要翻译： 光写入装置包括：包括沿主扫描方向布置的阵列的光源，每个阵列包括沿主扫描方向布置的发光元件; 校正值保持单元，与发光元件对应地保持用于改变定时的校正值，以读出存储在图像存储单元中的像素数据; 以及光源驱动单元，通过根据校正值读出存储的所存储的像素数据来驱动光源。 校正值保持单元包括用于保持对应于位于阵列末端的第一发光元件的第一校正值的第一区域和用于保持对应于第二发光元件的第二校正值的第二区域的其他 第一保持区域大于第二保持区域。

公开(公告)号：US08576267B2

公开(公告)日：2013-11-05

申请号：US13474062

申请日：2012-05-17

申请人： Motohiro Kawanabe ,  Tatsuya Miyadera ,  Masayuki Hayashi ,  Kunihiro Komai ,  Yasuo Yamaguchi ,  Yoshinori Shirasaki ,  Takeshi Shikama ,  Izumi Kinoshita ,  Susumu Miyazaki ,  Takuhei Yokoyama

发明人： Motohiro Kawanabe ,  Tatsuya Miyadera ,  Masayuki Hayashi ,  Kunihiro Komai ,  Yasuo Yamaguchi ,  Yoshinori Shirasaki ,  Takeshi Shikama ,  Izumi Kinoshita ,  Susumu Miyazaki ,  Takuhei Yokoyama

IPC分类号： B41J2/47 ,  G06K15/00 ,  H04N1/405

CPC分类号： G03G15/043 ,  G03G15/0131 ,  G03G15/5058 ,  G06K15/12 ,  G06K15/1868 ,  G06K15/1869 ,  H04N1/405 ,  H04N1/4078

摘要： An optical writing device stores pieces of dithering information indicating dithering patterns whose densities are different, each piece of dithering information including pieces of identification information associated with pixels of the corresponding dithering pattern, and stores pieces of pixel setting information in which pieces of colored/colorless information indicating each of the pixels is colored or colorless are associated with the pieces of identification information, the pieces of colored/colorless information being set based on a resolution of a light source for forming an electrostatic latent image. The optical writing device also includes a control unit configured to arrange the same dithering patterns in a way that the dithering patterns form a pattern with a given size, and cause the light source to emit light based on information generated by setting the pixels of each of the same dithering patterns to be colored or colorless in accordance with the pixel setting information.

摘要翻译： 光学写入装置存储指示密度不同的抖动图案的抖动信息，每个抖动信息包括与相应抖动图案的像素相关联的识别信息，并存储其中有色/无色的像素设置信息 指示每个像素的信息被着色或无色与识别信息相关联，基于用于形成静电潜像的光源的分辨率设置彩色/无色信息。 光写入装置还包括控制单元，其被配置为以抖动图案形成具有给定尺寸的图案的方式布置相同的抖动图案，并且基于通过设置每个图像的像素而产生的信息使光源发光 相同的抖动图案根据像素设置信息被着色或无色。