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1.发明授权Apparatus and method for image forming including density correction according to a phase based on correction information 有权用于图像形成的装置和方法，包括基于校正信息的相位的密度校正公开(公告)号：US08483587B2
公开(公告)日：2013-07-09
申请号：US12825104
申请日：2010-06-28
申请人： Takayuki Fukutani , Yuuji Takayama , Tomoyuki Saiki , Tae Mutsuo , Yuichi Ogawa
发明人： Takayuki Fukutani , Yuuji Takayama , Tomoyuki Saiki , Tae Mutsuo , Yuichi Ogawa
IPC分类号： G03G15/00
CPC分类号： G03G15/5008 , G03G15/0131 , G03G15/0194 , G03G15/1615 , G03G15/5058 , G03G2215/00059 , G03G2215/0129 , G03G2215/0164
摘要： An apparatus includes an image formation unit including a photosensitive drum and a motor for driving the image formation unit. The apparatus acquires a frequency generator signal, which is phase information output from the motor as the motor rotates. In addition, the apparatus corrects unevenness of the density that may occur due to the rotation of the motor according to the acquired phase information.
摘要翻译： 一种装置包括：图像形成单元，包括感光鼓和用于驱动图像形成单元的马达。 该装置获取频率发生器信号，该频率发生器信号是当马达旋转时从马达输出的相位信息。 此外，该装置根据获取的相位信息来校正由于电动机的旋转而可能发生的密度的不均匀性。
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公开(公告)号：US20100329712A1
公开(公告)日：2010-12-30
申请号：US12825104
申请日：2010-06-28
申请人： Takayuki Fukutani , Yuuji Takayama , Tomoyuki Saiki , Tae Mutsuo , Yuichi Ogawa
发明人： Takayuki Fukutani , Yuuji Takayama , Tomoyuki Saiki , Tae Mutsuo , Yuichi Ogawa
IPC分类号： G03G15/00
CPC分类号： G03G15/5008 , G03G15/0131 , G03G15/0194 , G03G15/1615 , G03G15/5058 , G03G2215/00059 , G03G2215/0129 , G03G2215/0164
摘要： An apparatus includes an image formation unit including a photosensitive drum and a motor for driving the image formation unit. The apparatus acquires a frequency generator signal, which is phase information output from the motor as the motor rotates. In addition, the apparatus corrects unevenness of the density that may occur due to the rotation of the motor according to the acquired phase information.
摘要翻译： 一种装置包括：图像形成单元，包括感光鼓和用于驱动图像形成单元的马达。 该装置获取频率发生器信号，该频率发生器信号是当马达旋转时从马达输出的相位信息。 此外，该装置根据获取的相位信息来校正由于电动机的旋转而可能发生的密度的不均匀性。
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公开(公告)号：US20110243582A1
公开(公告)日：2011-10-06
申请号：US13075584
申请日：2011-03-30
IPC分类号： G03G15/00
CPC分类号： G03G15/0131 , G03G15/5058 , G03G2215/00059 , G03G2215/00063 , G03G2215/0129 , G03G2215/0164
摘要： An image forming apparatus executes banding correction at a level determined according to variation of the density characteristic of the image forming apparatus to achieve a high quality image. In the image forming apparatus, a banding correction unit acquires information about a cause of density variation that may occur in a sub scanning direction of a rotation member, which is used for forming a toner image on an image carrier based on input image information and sets, based on the acquired information, the level of the density correction, which is determined according to the density variation cause information.
摘要翻译： 图像形成装置以根据图像形成装置的浓度特性的变化确定的水平执行条带校正，以实现高质量图像。 在图像形成装置中，条带校正单元基于输入图像信息获取关于在图像载体上形成调色剂图像的旋转构件的副扫描方向上可能发生的浓度变化的原因的信息，并且设置 基于获取的信息，根据密度变化确定的浓度校正的水平导致信息。
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公开(公告)号：US08891981B2
公开(公告)日：2014-11-18
申请号：US13075584
申请日：2011-03-30
CPC分类号： G03G15/0131 , G03G15/5058 , G03G2215/00059 , G03G2215/00063 , G03G2215/0129 , G03G2215/0164
摘要： An image forming apparatus executes banding correction at a level determined according to variation of the density characteristic of the image forming apparatus to achieve a high quality image. In the image forming apparatus, a banding correction unit acquires information about a cause of density variation that may occur in a sub scanning direction of a rotation member, which is used for forming a toner image on an image carrier based on input image information and sets, based on the acquired information, the level of the density correction, which is determined according to the density variation cause information.
摘要翻译： 图像形成装置以根据图像形成装置的浓度特性的变化确定的水平执行条带校正，以实现高质量图像。 在图像形成装置中，条带校正单元基于输入图像信息获取关于在图像载体上形成调色剂图像的旋转构件的副扫描方向上可能发生的浓度变化的原因的信息，并且设置 基于获取的信息，根据密度变化确定的浓度校正的水平导致信息。
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公开(公告)号：US08849134B2
公开(公告)日：2014-09-30
申请号：US13117363
申请日：2011-05-27
CPC分类号： G03G15/5058 , G03G15/0131 , G03G2215/00059 , G03G2215/00063 , G03G2215/0164
摘要： The image forming apparatus includes a CPU that performs control to form an inspection image for determining whether or not banding is suppressed to be smaller than a predetermined threshold value; and a density sensor that detects an intensity of banding periodically occurring in a sub-scanning direction of the formed inspection image. If based the detected banding intensity, the CPU has determined that the banding is not suppressed to be smaller than the predetermined threshold value, the CPU performs control to not perform banding correction or performs control to re-set a relationship between a phase of a rotary member and correction information.
摘要翻译： 图像形成装置包括执行控制以形成用于确定条带是否被抑制为小于预定阈值的检查图像的CPU; 以及密度传感器，其检测在所形成的检查图像的副扫描方向上周期性发生的条纹的强度。 如果基于检测到的条带强度，则CPU已经确定条带不被抑制为小于预定阈值，CPU执行控制以不执行条带校正或执行控制以重新设置旋转相位之间的关系 会员和更正信息。
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公开(公告)号：US20110299861A1
公开(公告)日：2011-12-08
申请号：US13117363
申请日：2011-05-27
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/0131 , G03G2215/00059 , G03G2215/00063 , G03G2215/0164
摘要： The image forming apparatus includes a CPU that performs control to form an inspection image for determining whether or not banding is suppressed to be smaller than a predetermined threshold value; and a density sensor that detects an intensity of banding periodically occurring in a sub-scanning direction of the formed inspection image. If based the detected banding intensity, the CPU has determined that the banding is not suppressed to be smaller than the predetermined threshold value, the CPU performs control to not perform banding correction or performs control to re-set a relationship between a phase of a rotary member and correction information.
摘要翻译： 图像形成装置包括执行控制以形成用于确定条带是否被抑制为小于预定阈值的检查图像的CPU; 以及密度传感器，其检测在所形成的检查图像的副扫描方向上周期性发生的条纹的强度。 如果基于检测到的条带强度，则CPU已经确定条带不被抑制为小于预定阈值，CPU执行控制以不执行条带校正或执行控制以重新设置旋转相位之间的关系 会员和更正信息。
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公开(公告)号：US20100171988A1
公开(公告)日：2010-07-08
申请号：US12646751
申请日：2009-12-23
申请人： Tomoyuki Saiki , Go Araki , Yuuji Takayama , Hisashi Ishikawa
发明人： Tomoyuki Saiki , Go Araki , Yuuji Takayama , Hisashi Ishikawa
IPC分类号： H04N1/40
CPC分类号： H04N1/4092 , H04N1/405
摘要： An image processing apparatus 101 that generates output image data based on multi-level image data is provided with an error diffusion processing unit 104 that generates tone pixel data from the pixel-of-interest data according to an error diffusion method, a dither processing unit 103 that generates tone pixel data from the pixel-of-interest data according to a dither processing method, an allotment ratio determination unit 105 that increases the allotment ratio with respect to the error diffusion method as the difference between the maximum density and the minimum density increases, and a composition unit 109 that composites the tone pixel data for a pixel of interest that has been generated by the error diffusion processing unit 104 and the dither processing unit 103 according to the allotment ratios determined by the allotment ratio determination unit 105, and outputs the composited data as pixel data of the output image data.
摘要翻译： 根据多级图像数据生成输出图像数据的图像处理装置101设置有误差扩散处理单元104，该误差扩散处理单元104根据误差扩散方法从兴趣像素数据生成色调像素数据，抖动处理单元 103，其根据抖动处理方法从兴趣像素数据生成色调像素数据;分配比率确定单元105，其将相对于误差扩散方法的分配比增加为最大密度和最小密度之间的差 以及合成单元109，其根据由分配比率确定单元105确定的分配比率，对由误差扩散处理单元104和抖动处理单元103生成的感兴趣像素的色调像素数据进行合成;以及 输出合成数据作为输出图像数据的像素数据。
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公开(公告)号：US20100103469A1
公开(公告)日：2010-04-29
申请号：US12604506
申请日：2009-10-23
申请人： Go Araki , Yuuji Takayama , Tomoyuki Saiki , Hisashi Ishikawa
发明人： Go Araki , Yuuji Takayama , Tomoyuki Saiki , Hisashi Ishikawa
CPC分类号： H04N1/04 , H04N1/4052 , H04N1/4056
摘要： A 2-pixel averaging unit (101) halves an input image in the subscanning direction, and a multi-level error diffusion unit (102) performs multi-level error diffusion processing. A 2-pixel reconstruction unit (103) replaces each pixel with two pixels adjacent in the subscanning direction. A density value exchange unit (104) exchanges pixel values adjacent in the subscanning direction in each of 2×2 pixel blocks arranged in a checkered pattern in the image after replacement. High-density blocks each serving as a set of high-density dots and low-density blocks each serving as a set of low-density dots can be generated as 2×2 pixel blocks. The exposure region can be concentrated in PWM conversion.
摘要翻译： 2像素平均单元（101）将副扫描方向上的输入图像减半，多级误差扩散单元（102）执行多级误差扩散处理。 2像素重构单元（103）用副扫描方向相邻的两个像素代替每个像素。 密度值交换单元（104）在更换后的图像中以排列图案的2×2像素块中的每一个中交换副扫描方向相邻的像素值。 作为一组高密度点的高密度块和各自用作低密度点的集合的低密度块可以被生成为2×2像素块。 曝光区域可以集中在PWM转换中。
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公开(公告)号：US08625156B2
公开(公告)日：2014-01-07
申请号：US12604549
申请日：2009-10-23
申请人： Tomoyuki Saiki , Go Araki , Yuuji Takayama , Hisashi Ishikawa
发明人： Tomoyuki Saiki , Go Araki , Yuuji Takayama , Hisashi Ishikawa
IPC分类号： H04N1/60 , H04N1/58 , H04N1/56 , H04N1/50 , G06F3/12 , H04N1/405 , G06K15/02 , G03F3/00 , G03G15/01
CPC分类号： H04N1/506 , G06K15/129 , H04N1/053 , H04N2201/04787
摘要： An image forming apparatus forms a color image using image carriers for a plurality of colors by electrophotography. The image forming apparatus stores, for each color, information on the shift amount between an ideal scanning line and an actual scanning line in the main scanning direction on the image carrier. For each color, a color misregistration correction amount calculation unit converts a readout address in a bitmap memory (403), based on the stored shift amount information, and reads out image data. A color misregistration correction unit (404) performs tone correction for the readout image data based on the address, outputting image data containing the value of the decimal part. A multi-level error diffusion unit (405) performs quantization by multi-level error diffusion processing for the tone-corrected image data containing the value of the decimal part.
摘要翻译： 图像形成装置通过电子照相形成使用多种颜色的图像载体的彩色图像。 图像形成装置针对每种颜色存储关于图像载体上的主扫描方向上的理想扫描线和实际扫描线之间的移动量的信息。 对于每种颜色，颜色对准校正量计算单元基于存储的移位量信息来转换位图存储器（403）中的读出地址，并读出图像数据。 颜色对准校正单元（404）基于地址对读出的图像数据执行色调校正，输出包含小数部分的值的图像数据。 多级误差扩散单元（405）通过多级误差扩散处理对包含小数部分的值的色调校正图像数据进行量化。
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10.发明授权Image processing apparatus and image processing method in which composite tone pixel data is provided based on tone pixel data generated by error diffusion processing and dither processing 失效基于通过误差扩散处理和抖动处理产生的色调像素数据提供复合色调像素数据的图像处理装置和图像处理方法公开(公告)号：US08422080B2
公开(公告)日：2013-04-16
申请号：US12646751
申请日：2009-12-23
申请人： Tomoyuki Saiki , Go Araki , Yuuji Takayama , Hisashi Ishikawa
发明人： Tomoyuki Saiki , Go Araki , Yuuji Takayama , Hisashi Ishikawa
IPC分类号： H04N1/40
CPC分类号： H04N1/4092 , H04N1/405
摘要： An image processing apparatus 101 that generates output image data based on multi-level image data is provided with an error diffusion processing unit 104 that generates tone pixel data from the pixel-of-interest data according to an error diffusion method, a dither processing unit 103 that generates tone pixel data from the pixel-of-interest data according to a dither processing method, an allotment ratio determination unit 105 that increases the allotment ratio with respect to the error diffusion method as the difference between the maximum density and the minimum density increases, and a composition unit 109 that composites the tone pixel data for a pixel of interest that has been generated by the error diffusion processing unit 104 and the dither processing unit 103 according to the allotment ratios determined by the allotment ratio determination unit 105, and outputs the composited data as pixel data of the output image data.
摘要翻译： 根据多级图像数据生成输出图像数据的图像处理装置101设置有误差扩散处理单元104，该误差扩散处理单元104根据误差扩散方法从兴趣像素数据生成色调像素数据，抖动处理单元 103，其根据抖动处理方法从兴趣像素数据生成色调像素数据;分配比率确定单元105，其将相对于误差扩散方法的分配比增加为最大密度和最小密度之间的差 以及合成单元109，其根据由分配比率确定单元105确定的分配比率，合成由误差扩散处理单元104和抖动处理单元103生成的感兴趣像素的色调像素数据;以及 输出合成数据作为输出图像数据的像素数据。
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