公开(公告)号：US09535360B2

公开(公告)日：2017-01-03

申请号：US14637875

申请日：2015-03-04

申请人： Motohiro Kawanabe ,  Masayuki Hayashi ,  Masatoshi Murakami ,  Yoshinori Shirasaki ,  Yuusuke Kohri ,  Akinori Yamaguchi

发明人： Motohiro Kawanabe ,  Masayuki Hayashi ,  Masatoshi Murakami ,  Yoshinori Shirasaki ,  Yuusuke Kohri ,  Akinori Yamaguchi

IPC分类号： G09G3/30 ,  G03G15/043

CPC分类号： G03G15/043

摘要： An image forming apparatus comprises: a plurality of exposure units, each of the exposure units including a plurality of light emitting elements that are arranged in a main scanning direction; a calculating unit that, with respect to each of the exposure units, calculates a pre-charge period that is a period during which a pre-charge is performed on at least any of the light emitting elements included in a corresponding exposure unit; and an emission control unit that, with respect to each of the exposure units, causes the light emitting elements included in a corresponding exposure unit to emit light such that a pre-charge period of at least any of the exposure units is shifted with respect to pre-charge periods of remaining ones of the exposure units.

摘要翻译： 图像形成装置包括：多个曝光单元，每个曝光单元包括沿主扫描方向布置的多个发光元件; 计算单元，对于每个曝光单元，计算作为对相应的曝光单元中包括的至少任一个发光元件进行预充电的期间的预充电期间; 以及排放控制单元，相对于每个曝光单元，使包括在相应的曝光单元中的发光元件发光，使得至少任何曝光单元的预充电周期相对于 剩余的曝光单位的预充电期间。

公开(公告)号：US09529295B2

公开(公告)日：2016-12-27

申请号：US14882125

申请日：2015-10-13

申请人： Yuusuke Kohri ,  Masayuki Hayashi ,  Motohiro Kawanabe ,  Yoshinori Shirasaki ,  Masatoshi Murakami ,  Akinori Yamaguchi

发明人： Yuusuke Kohri ,  Masayuki Hayashi ,  Motohiro Kawanabe ,  Yoshinori Shirasaki ,  Masatoshi Murakami ,  Akinori Yamaguchi

IPC分类号： G03G15/04 ,  G03G15/043

CPC分类号： G03G15/043 ,  G03G15/04054 ,  G03G2215/0141

摘要： An optical writing control device and method are provided, for controlling light emission of a plurality of light sources to form an electrostatic latent image on a photosensitive element, the light sources including a plurality of light emitting elements disposed in a line, including frequency converter circuitry configured to acquire image information to be formed as the electrostatic latent image; and a light source controller configured to control the plurality of light sources based on pixel information generated from the acquired image information, the light source controller being further configured to control the light emission of the plurality of light sources by classifying the light emitting elements into a plurality of groups, and shifting the timing of light emission from one group of the plurality of groups to a next group of the plurality of groups, and determine an illuminating period for each light source of the plurality of light sources based on the shifted timing of light emission among the plurality of groups.

摘要翻译： 提供了一种光学写入控制装置和方法，用于控制多个光源的光发射以在感光元件上形成静电潜像，所述光源包括设置在一行中的多个发光元件，包括频率转换器电路 被配置为获取要形成为静电潜像的图像信息; 以及光源控制器，其被配置为基于从所获取的图像信息生成的像素信息来控制所述多个光源，所述光源控制器还被配置为通过将所述发光元件分类为多个光源来控制所述多个光源的发光 将多个组中的一组的发光定时移动到多个组中的下一组，并根据移动的定时确定多个光源的每个光源的照明周期 多个组中的光发射。

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。

公开(公告)号：US20130070040A1

公开(公告)日：2013-03-21

申请号：US13617458

申请日：2012-09-14

申请人： Tatsuya Miyadera ,  Yoshinori Shirasaki ,  Motoyoshi Takahashi ,  Masayuki Hayashi ,  Kunihiro Komai ,  Fuminori Tsuchiya ,  Akinori Yamaguchi ,  Hiroaki Ikeda

发明人： Tatsuya Miyadera ,  Yoshinori Shirasaki ,  Motoyoshi Takahashi ,  Masayuki Hayashi ,  Kunihiro Komai ,  Fuminori Tsuchiya ,  Akinori Yamaguchi ,  Hiroaki Ikeda

IPC分类号： B41J2/435

CPC分类号： H04N1/506 ,  G03G15/043 ,  G06K15/1247 ,  G06K15/1894

摘要： An exposure control apparatus includes: a plurality of line memories; a processing unit that processes image data by successively recording the image data to the plurality of line memories, and successively reading the image data from the plurality of line memories; and an exposing unit that performs, with an exposure cycle, an exposure process according to the processed image data, and that forms a latent image based on the image data onto an image carrier, wherein the image data is transferred with a cycle which is N times as high as the exposure cycle (N is a natural number), and the processing unit reads the image data N times with the exposure cycle.

摘要翻译： 曝光控制装置包括：多个行存储器; 处理单元，通过将图像数据连续地记录到多个行存储器中，并且从多个行存储器连续地读取图像数据来处理图像数据; 以及曝光单元，其以曝光周期执行根据所处理的图像数据的曝光处理，并且基于图像数据形成潜像到图像载体上，其中以N为单位的周期传送图像数据 次数（N为自然数），处理单元以曝光周期读取N次图像数据。

公开(公告)号：US20110228029A1

公开(公告)日：2011-09-22

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： B41J2/385 ,  B41J2/435

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。

公开(公告)号：US08681390B2

公开(公告)日：2014-03-25

申请号：US13462029

申请日：2012-05-02

申请人： Motoyoshi Takahashi ,  Masayuki Hayashi ,  Hiroaki Ikeda ,  Kunihiro Komai ,  Yoshinori Shirasaki ,  Fuminori Tsuchiya ,  Akinori Yamaguchi ,  Tatsuya Miyadera

发明人： Motoyoshi Takahashi ,  Masayuki Hayashi ,  Hiroaki Ikeda ,  Kunihiro Komai ,  Yoshinori Shirasaki ,  Fuminori Tsuchiya ,  Akinori Yamaguchi ,  Tatsuya Miyadera

IPC分类号： H04N1/40

CPC分类号： H04N1/40 ,  H04N1/32363 ,  H04N1/32448 ,  H04N2201/0082 ,  H04N2201/04796 ,  H04N2201/3297 ,  H04N2201/3298

摘要： In an optical scanner, when an emission control unit varies a period at which image data is output from an output buffer of the emission control unit in order to correct a sub scan magnification of a LED array and a vacant region of an input buffer of the emission control unit ceases to exist, a buffer control unit temporarily stores the image data in a vacant region of a memory of an image correcting unit, and transfers the image data temporarily stored in the memory to the input buffer when the vacant region is generated in the input buffer.

摘要翻译： 在光学扫描器中，当发光控制单元改变从发光控制单元的输出缓冲器输出图像数据的周期，以便校正LED阵列的副扫描放大率和输出缓冲器的空白区域时 排放控制单元不再存在，则缓冲器控制单元将图像数据临时存储在图像校正单元的存储器的空白区域中，并且当空白区域被生成时将临时存储在存储器中的图像数据传送到输入缓冲器 输入缓冲区。

公开(公告)号：US08665299B2

公开(公告)日：2014-03-04

申请号：US13617458

申请日：2012-09-14

申请人： Tatsuya Miyadera ,  Yoshinori Shirasaki ,  Motoyoshi Takahashi ,  Masayuki Hayashi ,  Kunihiro Komai ,  Fuminori Tsuchiya ,  Akinori Yamaguchi ,  Hiroaki Ikeda

发明人： Tatsuya Miyadera ,  Yoshinori Shirasaki ,  Motoyoshi Takahashi ,  Masayuki Hayashi ,  Kunihiro Komai ,  Fuminori Tsuchiya ,  Akinori Yamaguchi ,  Hiroaki Ikeda

IPC分类号： B41J2/385 ,  B41J2/45

CPC分类号： H04N1/506 ,  G03G15/043 ,  G06K15/1247 ,  G06K15/1894

摘要： An exposure control apparatus includes: a plurality of line memories; a processing unit that processes image data by successively recording the image data to the plurality of line memories, and successively reading the image data from the plurality of line memories; and an exposing unit that performs, with an exposure cycle, an exposure process according to the processed image data, and that forms a latent image based on the image data onto an image carrier, wherein the image data is transferred with a cycle which is N times as high as the exposure cycle (N is a natural number), and the processing unit reads the image data N times with the exposure cycle.

摘要翻译： 曝光控制装置包括：多个行存储器; 处理单元，通过将图像数据连续地记录到多个行存储器中，并且从多个行存储器连续地读取图像数据来处理图像数据; 以及曝光单元，其以曝光周期执行根据所处理的图像数据的曝光处理，并且基于图像数据形成潜像到图像载体上，其中以N为单位的周期传送图像数据 次数（N为自然数），处理单元以曝光周期读取N次图像数据。

公开(公告)号：US10782626B2

公开(公告)日：2020-09-22

申请号：US16423509

申请日：2019-05-28

申请人： Masatoshi Murakami ,  Yoshinori Shirasaki ,  Masayuki Hayashi

发明人： Masatoshi Murakami ,  Yoshinori Shirasaki ,  Masayuki Hayashi

IPC分类号： G03G15/01 ,  G03G15/16

摘要： An image forming apparatus includes a transfer belt, a plurality of endless rotational bodies, an image forming device, a pattern sensor, and processing circuitry. The image forming device forms correction patterns including a first pattern as a straight line pattern orthogonal to a conveyance direction of the correction patterns and a second pattern as one of a straight line pattern orthogonal to and an oblique line pattern inclined with respect to the conveyance direction. The processing circuitry causes the image forming device to form the correction patterns using a correction value such that the second pattern included in one correction pattern on the transfer belt is same in color and shape as the second pattern included in at least one correction pattern of a preceding correction pattern and a following correction pattern in the conveyance direction with respect to the one correction pattern.

公开(公告)号：US20190369518A1

公开(公告)日：2019-12-05

申请号：US16423509

申请日：2019-05-28

申请人： Masatoshi Murakami ,  Yoshinori Shirasaki ,  Masayuki Hayashi

发明人： Masatoshi Murakami ,  Yoshinori Shirasaki ,  Masayuki Hayashi

IPC分类号： G03G15/01 ,  G03G15/16

摘要： An image forming apparatus includes a transfer belt, a plurality of endless rotational bodies, an image forming device, a pattern sensor, and processing circuitry. The image forming device forms correction patterns including a first pattern as a straight line pattern orthogonal to a conveyance direction of the correction patterns and a second pattern as one of a straight line pattern orthogonal to and an oblique line pattern inclined with respect to the conveyance direction. The processing circuitry causes the image forming device to form the correction patterns using a correction value such that the second pattern included in one correction pattern on the transfer belt is same in color and shape as the second pattern included in at least one correction pattern of a preceding correction pattern and a following correction pattern in the conveyance direction with respect to the one correction pattern.

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。