公开(公告)号：US07684079B2

公开(公告)日：2010-03-23

申请号：US11274141

申请日：2005-11-16

申请人： Tsutomu Takata ,  Hiroki Kitamura ,  Yoshiyuki Akiba ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Kenzo Tojima ,  Takaaki Nagaoka

发明人： Tsutomu Takata ,  Hiroki Kitamura ,  Yoshiyuki Akiba ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Kenzo Tojima ,  Takaaki Nagaoka

IPC分类号： G06F15/00 ,  G06K1/00 ,  H04N1/60

CPC分类号： G06K15/1878 ,  G06K15/14 ,  G06K15/188 ,  G06K15/1881 ,  H04N1/29 ,  H04N1/40062 ,  H04N1/4092 ,  H04N1/506 ,  H04N1/52 ,  H04N1/58 ,  H04N1/60 ,  H04N1/6027 ,  H04N1/6072

摘要： An image forming engine has color shifting amount storage units C, M, Y, and K (black) which store actual shifting amounts relative to ideal scan directions on image carriers C, M, Y, and K in image forming units C, M, Y, and K. Color shifting correction amount arithmetic units calculate color shifting correction amounts for respective color components to base on the stored color shifting amounts. Color shifting correction units C, M, Y, and K perform color shifting correction by converting coordinates upon reading out image data from bitmap memories C, M, Y, and K on the basis of the calculated color shifting correction amounts, and then perform tone correction. Data after tone correction undergo halftone processing by halftone processors. C, M, Y, and K to suppress moire. PWM processors C, M, Y, and K generate PWM signals for scanning, and output them to exposure units C, M, Y, and K of the respective image forming units.

摘要翻译： 图像形成引擎具有在图像形成单元C，M中存储相对于图像载体C，M，Y和K上的理想扫描方向的实际移动量的色移量存储单元C，M，Y和K（黑色） Y和K.颜色偏移校正量运算单元基于存储的颜色偏移量来计算各个颜色分量的颜色偏移校正量。 颜色偏移校正单元C，M，Y和K基于计算出的色移校正量从位图存储器C，M，Y和K读出图像数据，通过转换坐标进行色移校正，然后执行色调 更正。 色调校正后的数据通过半色调处理器​​进行半色调处理。 C，M，Y和K来抑制莫尔条纹。 PWM处理器C，M，Y和K产生用于扫描的PWM信号，并将它们输出到各个图像形成单元的曝光单元C，M，Y和K.

公开(公告)号：US20060119895A1

公开(公告)日：2006-06-08

申请号：US11274141

申请日：2005-11-16

申请人： Tsutomu Takata ,  Hiroki Kitamura ,  Yoshiyuki Akiba ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Kenzo Tojima ,  Takaaki Nagaoka

发明人： Tsutomu Takata ,  Hiroki Kitamura ,  Yoshiyuki Akiba ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Kenzo Tojima ,  Takaaki Nagaoka

IPC分类号： H04N1/409

CPC分类号： G06K15/1878 ,  G06K15/14 ,  G06K15/188 ,  G06K15/1881 ,  H04N1/29 ,  H04N1/40062 ,  H04N1/4092 ,  H04N1/506 ,  H04N1/52 ,  H04N1/58 ,  H04N1/60 ,  H04N1/6027 ,  H04N1/6072

摘要： With this invention, color shifting correction is performed first based on shifting amount information indicating a shifting amount with respect to the scanning direction on an image carrier of each image forming unit, and halftone processing is then performed, thus suppressing generation of moiré due to the color shifting correction, and forming a high-quality image. To this end, an image forming engine has color shifting amount storage units C, M, Y, and K (black) which store actual shifting amounts with respect to ideal scan directions on image carriers C, M, Y, and K in image forming units C, M, Y, and K. Color shifting correction amount arithmetic units C, M, Y, and K calculate color shifting correction amounts for respective color components on the basis of the stored color shifting amounts. Color shifting correction units C, M, Y, and K perform color shifting correction by converting coordinates upon reading out image data from bitmap memories C, M, Y, and K on the basis of the calculated color shifting correction amounts, and then perform tone correction. Data after tone correction undergo halftone processing by halftone processors C, M, Y, and K. PWM processors C, M, Y, and K generate PWM signals for scanning, and output them to exposure units C, M, Y, and K of the respective image forming units.

摘要翻译： 利用本发明，首先基于在每个图像形成单元的图像载体上指示相对于扫描方向的移动量的移动量信息执行颜色偏移校正，然后执行半色调处理，从而抑制由于 颜色偏移校正，并形成高质量的图像。 为此，图像形成引擎具有在图像形成中存储图像载体C，M，Y和K上的理想扫描方向的实际移动量的色移量存储单元C，M，Y和K（黑色） 单位C，M，Y和K.颜色偏移校正量运算单元C，M，Y和K基于存储的颜色偏移量计算各个颜色分量的颜色偏移校正量。 颜色偏移校正单元C，M，Y和K基于计算出的色移校正量从位图存储器C，M，Y和K读出图像数据，通过转换坐标进行色移校正，然后执行色调 更正。 色调校正后的数据通过半色调处理器​​C，M，Y和K的半色调处理。PWM处理器C，M，Y和K生成用于扫描的PWM信号，并将其输出到曝光单元C，M，Y和K的曝光单元 相应的图像形成单元。

公开(公告)号：US07770994B2

公开(公告)日：2010-08-10

申请号：US11968817

申请日：2008-01-03

申请人： Hiroki Kitamura ,  Yoshiyuki Akiba ,  Tsutomu Takada ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Kenzo Tojima ,  Takaaki Nagaoka

发明人： Hiroki Kitamura ,  Yoshiyuki Akiba ,  Tsutomu Takada ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Kenzo Tojima ,  Takaaki Nagaoka

IPC分类号： B41J2/205

CPC分类号： H04N1/506 ,  H04N1/40062 ,  H04N1/4056

摘要： A shifting amount of color compensation amount is calculated based on a shifting amount of color obtained from a shifting amount of color storage unit for each image forming unit, and shifting amount of color compensation in the pixel unit is performed by executing address conversion using the calculation result. A feature of an image to be processed is detected, and color density conversion compensation for performing shifting amount of color compensation in less than the pixel unit is performed according to the detected feature. Furthermore, half-tone processing or exceptional processing is selectively executed according to the detected feature.

摘要翻译： 基于从每个图像形成单元的颜色存储单元的移动量获得的颜色的移动量来计算颜色补偿量的偏移量，并且通过使用计算执行地址转换来执行像素单元中的颜色补偿的移动量 结果。 检测要处理的图像的特征，并且根据检测到的特征执行用于执行小于像素单位的颜色补偿的偏移量的颜色浓度转换补偿。 此外，根据检测到的特征选择性地执行半色调处理或特殊处理。

公开(公告)号：US20060232620A1

公开(公告)日：2006-10-19

申请号：US11279273

申请日：2006-04-11

申请人： HIROKI KITAMURA ,  Yoshiyuki Akiba ,  Tsutomu Takada ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Kenzo Tojima ,  Takaaki Nagaoka

发明人： HIROKI KITAMURA ,  Yoshiyuki Akiba ,  Tsutomu Takada ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Kenzo Tojima ,  Takaaki Nagaoka

IPC分类号： B41J2/205

CPC分类号： H04N1/506 ,  H04N1/40062 ,  H04N1/4056

摘要： A shifting amount of color compensation amount is calculated based on a shifting amount of color obtained from a shifting amount of color storage unit for each image forming unit, and shifting amount of color compensation in the pixel unit is performed by executing address conversion using the calculation result. A feature of an image to be processed is detected, and color density conversion compensation for performing shifting amount of color compensation in less than the pixel unit is performed according to the detected feature. Furthermore, half-tone processing or exceptional processing is selectively executed according to the detected feature.

摘要翻译： 基于从每个图像形成单元的颜色存储单元的移动量获得的颜色的移动量来计算颜色补偿量的偏移量，并且通过使用计算执行地址转换来执行像素单元中的颜色补偿的移动量 结果。 检测要处理的图像的特征，并且根据检测到的特征执行用于执行小于像素单位的颜色补偿的偏移量的颜色浓度转换补偿。 此外，根据检测到的特征选择性地执行半色调处理或特殊处理。

公开(公告)号：US08570594B2

公开(公告)日：2013-10-29

申请号：US12716125

申请日：2010-03-02

申请人： Tsutomu Takata ,  Hiroki Kitamura ,  Yoshiyuki Akiba ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Kenzo Tojima ,  Takaaki Nagaoka

发明人： Tsutomu Takata ,  Hiroki Kitamura ,  Yoshiyuki Akiba ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Kenzo Tojima ,  Takaaki Nagaoka

IPC分类号： G06F15/00

CPC分类号： G06K15/1878 ,  G06K15/14 ,  G06K15/188 ,  G06K15/1881 ,  H04N1/29 ,  H04N1/40062 ,  H04N1/4092 ,  H04N1/506 ,  H04N1/52 ,  H04N1/58 ,  H04N1/60 ,  H04N1/6027 ,  H04N1/6072

摘要： With this invention, color shifting correction is performed first based on shifting amount information indicating a shifting amount with respect to the scanning direction on an image carrier of each image forming unit, and halftone processing is then performed, thus suppressing generation of moiré due to the color shifting correction, and forming a high-quality image. To this end, an image forming engine has color shifting amount storage units C, M, Y, and K (black) which store actual shifting amounts with respect to ideal scan directions on image carriers C, M, Y, and K in image forming units C, M, Y, and K. Color shifting correction amount arithmetic units C, M, Y, and K calculate color shifting correction amounts for respective color components on the basis of the stored color shifting amounts. Color shifting correction units C, M, Y, and K perform color shifting correction by converting coordinates upon reading out image data from bitmap memories C, M, Y, and K on the basis of the calculated color shifting correction amounts, and then perform tone correction. Data after tone correction undergo halftone processing by halftone processors. C, M, Y, and K. PWM processors C, M, Y, and K generate PWM signals for scanning, and output them to exposure units C, M, Y, and K of the respective image forming units.

摘要翻译： 利用本发明，首先基于在每个图像形成单元的图像载体上指示相对于扫描方向的移动量的移动量信息执行颜色偏移校正，然后执行半色调处理，从而抑制由于 颜色偏移校正，并形成高质量的图像。 为此，图像形成引擎具有在图像形成中存储图像载体C，M，Y和K上的理想扫描方向的实际移动量的色移量存储单元C，M，Y和K（黑色） 单位C，M，Y和K.颜色偏移校正量运算单元C，M，Y和K基于存储的颜色偏移量计算各个颜色分量的颜色偏移校正量。 颜色偏移校正单元C，M，Y和K基于计算出的色移校正量从位图存储器C，M，Y和K读出图像数据，通过转换坐标进行色移校正，然后执行色调 更正。 色调校正后的数据通过半色调处理器​​进行半色调处理。 C，M，Y和K. PWM处理器C，M，Y和K产生用于扫描的PWM信号，并将其输出到各个图像形成单元的曝光单元C，M，Y和K.

公开(公告)号：US08531497B2

公开(公告)日：2013-09-10

申请号：US12145421

申请日：2008-06-24

申请人： Masanao Motoyama

发明人： Masanao Motoyama

IPC分类号： B41J15/14 ,  B41J27/00 ,  B41J2/435

CPC分类号： G03G15/043 ,  G03G15/0415 ,  G03G15/0435 ,  G03G15/326 ,  G03G2215/0404

摘要： An image forming apparatus includes a light beam output unit configured to output a light beam, a deflection unit for deflection scanning in a main scanning direction of a photosensitive member by reflecting the light beam from the light beam output unit, a timing information detection unit configured to detect timing information of the deflection scanning by the deflection unit, a calculation unit configured to calculate a correction amount of the main scanning direction for a next scan based on the timing information, a light beam modulation control unit configured to generate a light beam modulation signal based on image data and the correction amount, and a drive unit configured to drive the light beam output unit based on the light beam modulation signal.

摘要翻译： 图像形成装置包括：光束输出单元，被配置为输出光束;偏转单元，用于通过反射来自光束输出单元的光束在感光构件的主扫描方向上进行偏转扫描;定时信息检测单元配置 检测由偏转单元进行的偏转扫描的定时信息;计算单元，被配置为基于定时信息计算下一扫描的主扫描方向的校正量;光束调制控制单元，被配置为生成光束调制 基于图像数据和校正量的信号，以及驱动单元，被配置为基于光束调制信号驱动光束输出单元。

公开(公告)号：US08068259B2

公开(公告)日：2011-11-29

申请号：US12603035

申请日：2009-10-21

申请人： Kenzo Tojima ,  Hiroki Kitamura ,  Yoshiyuki Akiba ,  Tsutomu Takata ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Takaaki Nagaoka

发明人： Kenzo Tojima ,  Hiroki Kitamura ,  Yoshiyuki Akiba ,  Tsutomu Takata ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Takaaki Nagaoka

IPC分类号： G06K15/00 ,  G03F3/08 ,  H04N1/40 ,  H04N1/60

CPC分类号： H04N1/506 ,  H04N2201/04787

摘要： A color image forming apparatus of a so-called tandem type which has image forming units in correspondence with colors is provided. In the color image forming apparatus, a color discrepancy amount storage unit stores information of a color discrepancy amount of each of the image forming units, which is measured in advance. A first color discrepancy correcting unit performs color discrepancy correction in a pixel unit by performing coordinate conversion of bitmap data to be printed based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit. A second color discrepancy correcting unit performs color discrepancy correction in less than a pixel unit by performing tone correction of the bitmap data corrected by the first color discrepancy correcting unit based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit.

摘要翻译： 提供了具有与颜色相对应的图像形成单元的所谓串列型彩色图像形成装置。 在彩色图像形成装置中，颜色差异量存储单元存储预先测量的每个图像形成单元的颜色差异量的信息。 第一颜色差异校正单元通过基于存储在颜色差异量存储单元中的颜色差异量的信息执行要打印的位图数据的坐标转换来执行像素单元中的色差校正。 第二颜色差异校正单元通过基于存储在颜色差异量存储单元中的颜色差异量的信息执行由第一色差校正单元校正的位图数据的色调校正，以小于像素单元执行色差校正。

公开(公告)号：US07746366B2

公开(公告)日：2010-06-29

申请号：US11272707

申请日：2005-11-15

申请人： Masanao Motoyama

发明人： Masanao Motoyama

IPC分类号： B41J2/385 ,  B41J2/455

CPC分类号： H04N1/053 ,  H04N2201/04781 ,  H04N2201/04789

摘要： An image output apparatus which outputs a high quality image by using a small number of pixel clock generation units, for use with a printing engine which has a plurality of laser beam control units. The image output apparatus includes a plurality of output units which output video signals based on print data to the respective laser beam control units in synchronization with a clock signal; and a plurality of clock control units which are arranged in correspondence with respective groups, that are prepared by grouping the plurality of output units, so as to decrease an optical path difference between laser beams controlled by the corresponding laser beam control unit. Each of the clock control units generates the clock signal on the basis of a synchronizing signal generated in the printing engine, and outputs the generated clock signal to output units belonging to a corresponding group.

摘要翻译： 一种通过使用少量像素时钟产生单元输出高质量图像的图像输出装置，用于具有多个激光束控制单元的打印引擎。 图像输出装置包括多个输出单元，其与时钟信号同步地将基于打印数据的视频信号输出到各个激光束控制单元; 以及多个时钟控制单元，其通过对多个输出单元进行分组而准备的各组对应地布置，以便减小由相应的激光束控制单元控制的激光束之间的光程差。 每个时钟控制单元基于在打印引擎中产生的同步信号产生时钟信号，并将生成的时钟信号输出到属于相应组的输出单元。

公开(公告)号：US07630100B2

公开(公告)日：2009-12-08

申请号：US11279001

申请日：2006-04-07

申请人： Kenzo Tojima ,  Hiroki Kitamura ,  Yoshiyuki Akiba ,  Tsutomu Takata ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Takaaki Nagaoka

发明人： Kenzo Tojima ,  Hiroki Kitamura ,  Yoshiyuki Akiba ,  Tsutomu Takata ,  Shuichi Nakamura ,  Yusuke Yamamoto ,  Masanao Motoyama ,  Takeshi Akiyama ,  Takaaki Nagaoka

IPC分类号： H04N1/409 ,  G06K1/00 ,  G06K9/00 ,  G03F3/08 ,  B41J2/47 ,  B41J2/435 ,  G03G15/01

CPC分类号： H04N1/506 ,  H04N2201/04787

摘要： A color image forming apparatus of a so-called tandem type which has image forming units in correspondence with colors is provided. In the color image forming apparatus, a color discrepancy amount storage unit stores information of a color discrepancy amount of each of the image forming units, which is measured in advance. A first color discrepancy correcting unit performs color discrepancy correction in a pixel unit by performing coordinate conversion of bitmap data to be printed based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit. A second color discrepancy correcting unit performs color discrepancy correction in less than a pixel unit by performing tone correction of the bitmap data corrected by the first color discrepancy correcting unit based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit.

摘要翻译： 提供了具有与颜色相对应的图像形成单元的所谓串列型彩色图像形成装置。 在彩色图像形成装置中，颜色差异量存储单元存储预先测量的每个图像形成单元的颜色差异量的信息。 第一颜色差异校正单元通过基于存储在颜色差异量存储单元中的颜色差异量的信息执行要打印的位图数据的坐标转换来执行像素单元中的色差校正。 第二颜色差异校正单元通过基于存储在颜色差异量存储单元中的颜色差异量的信息执行由第一色差校正单元校正的位图数据的色调校正，以小于像素单元执行色差校正。

公开(公告)号：US20090003861A1

公开(公告)日：2009-01-01

申请号：US12145421

申请日：2008-06-24

申请人： Masanao Motoyama

发明人： Masanao Motoyama

IPC分类号： G03G15/043

CPC分类号： G03G15/043 ,  G03G15/0415 ,  G03G15/0435 ,  G03G15/326 ,  G03G2215/0404

摘要： An image forming apparatus includes a light beam output unit configured to output a light beam, a deflection unit for deflection scanning in a main scanning direction of a photosensitive member by reflecting the light beam from the light beam output unit, a timing information detection unit configured to detect timing information of the deflection scanning by the deflection unit, a calculation unit configured to calculate a correction amount of the main scanning direction for a next scan based on the timing information, a light beam modulation control unit configured to generate a light beam modulation signal based on image data and the correction amount, and a drive unit configured to drive the light beam output unit based on the light beam modulation signal.

摘要翻译： 图像形成装置包括：光束输出单元，被配置为输出光束;偏转单元，用于通过反射来自光束输出单元的光束在感光构件的主扫描方向上进行偏转扫描;定时信息检测单元配置 检测由偏转单元进行的偏转扫描的定时信息;计算单元，被配置为基于定时信息计算下一扫描的主扫描方向的校正量;光束调制控制单元，被配置为生成光束调制 基于图像数据和校正量的信号，以及驱动单元，被配置为基于光束调制信号驱动光束输出单元。