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1. 发明授权

US07770994B2 Image forming apparatus and its control method, and computer program and computer-readable storage medium 失效
标题翻译：图像形成装置及其控制方法，以及计算机程序和计算机可读存储介质
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。

2. 发明申请

US20080123145A1 IMAGE FORMING APPARATUS AND ITS CONTROL METHOD, AND COMPUTER PROGRAM AND COMPUTER-READABLE STORAGE MEDIUM 失效
标题翻译：图像形成装置及其控制方法以及计算机程序和计算机可读存储介质
公开(公告)号：US20080123145A1
公开(公告)日：2008-05-29
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： G06K15/00
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。

3. 发明授权

US07344217B2 Image forming apparatus and its control method, and computer program and computer readable storage medium 有权
标题翻译：图像形成装置及其控制方法，以及计算机程序和计算机可读存储介质
公开(公告)号：US07344217B2
公开(公告)日：2008-03-18
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。

4. 发明申请

US20100220342A1 IMAGE FORMING APPARATUS AND ITS CONTROL METHOD 有权
标题翻译：图像形成装置及其控制方法
公开(公告)号：US20100220342A1
公开(公告)日：2010-09-02
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.

5. 发明申请

US20100079820A1 COLOR IMAGE FORMING APPARATUS 有权
标题翻译：彩色图像形成装置
公开(公告)号：US20100079820A1
公开(公告)日：2010-04-01
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
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。

6. 发明授权

US07619775B2 Image forming system with density conversion based on image characteristics and amount of color shift 失效
标题翻译：基于图像特征和颜色偏移量的密度转换的图像形成系统
公开(公告)号：US07619775B2
公开(公告)日：2009-11-17
申请号：US11613644
申请日：2006-12-20
申请人： Hiroki Kitamura , Yoshiyuki Akiba , Tsutomu Takata , Shuichi Nakamura , Yusuke Yamamoto , Masanao Motoyama , Takeshi Akiyama , Kenzo Tojima , Takaaki Nagaoka
发明人： Hiroki Kitamura , Yoshiyuki Akiba , Tsutomu Takata , Shuichi Nakamura , Yusuke Yamamoto , Masanao Motoyama , Takeshi Akiyama , Kenzo Tojima , Takaaki Nagaoka
IPC分类号： H04N1/50 , H04N1/58
CPC分类号： G03G15/0115 , G03G2215/0119 , G03G2215/0158 , H04N1/506
摘要： An image forming system includes an information processing apparatus and an image forming apparatus. The information processing apparatus performs image generation, color conversion, and extraction of image characteristics to generate compressed data. The image forming apparatus decompresses the compressed data and determines a writing address into an image data storing unit on the basis of an amount of shift to convert the density of the image data in fractional pixel units.
摘要翻译：图像形成系统包括信息处理装置和图像形成装置。信息处理装置执行图像生成，颜色转换和图像特征的提取以生成压缩数据。图像形成装置对压缩数据进行解压缩，并且基于偏移量将写入地址确定为图像数据存储单元，以分数像素单位转换图像数据的浓度。

7. 发明授权

US07684079B2 Image forming apparatus and its control method 有权
标题翻译：图像形成装置及其控制方法
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.

8. 发明申请

US20060119895A1 Image forming apparatus and its control method 有权
标题翻译：图像形成装置及其控制方法
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。

9. 发明授权

US08570594B2 Image forming apparatus and its control method of correction amount based on selected rotational speed 有权
标题翻译：图像形成装置及其基于选定转速的校正量的控制方法
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.

10. 发明授权

US08068259B2 Color image forming apparatus 有权
标题翻译：彩色图像形成装置
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。

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