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11. 发明授权

US08208172B2 Image forming apparatus and image forming method 失效
标题翻译：图像形成装置及图像形成方法
公开(公告)号：US08208172B2
公开(公告)日：2012-06-26
申请号：US12638524
申请日：2009-12-15
申请人： Yuuji Takayama , Hisashi Ishikawa , Tomoyuki Saiki , Go Araki
发明人： Yuuji Takayama , Hisashi Ishikawa , Tomoyuki Saiki , Go Araki
IPC分类号： H04N1/60
CPC分类号： G06K9/38 , H04N1/60
摘要： An image forming apparatus includes a resolution conversion unit that integrates n pixels that are contiguous in the sub-scanning direction, and that determines an average value of pixel values of the n pixels as a pixel value of integrated pixels, a quantization unit that quantizes the pixel value of the integrated pixels to N levels, an image analysis unit that performs first determination processing for determining whether the difference between the pixel values of the n input pixels exceeds a threshold value set in advance, and second determination processing for determining whether a direction in which the pixel values of the n input pixels becomes greater is a forward direction of the sub-scanning direction or an opposite direction, and a pixel selection unit that determines n output pixels, based on the results, from a quantization result of the integrated pixels.
摘要翻译：一种图像形成装置包括分辨率转换单元，其对在副扫描方向上连续的n个像素进行积分，并且将n个像素的像素值的平均值确定为积分像素的像素值，量化单元图像分析单元，其执行用于确定n个输入像素的像素值之间的差是否超过预先设定的阈值的第一确定处理，以及用于确定方向其中n个输入像素的像素值变大，是副扫描方向的正向或相反方向，以及像素选择单元，根据该结果，从积分像素。

12. 发明申请

US20100171970A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 失效
标题翻译：图像形成装置和图像形成方法
公开(公告)号：US20100171970A1
公开(公告)日：2010-07-08
申请号：US12638524
申请日：2009-12-15
申请人： Yuuji Takayama , Hisashi Ishikawa , Tomoyuki Saiki , Go Araki
发明人： Yuuji Takayama , Hisashi Ishikawa , Tomoyuki Saiki , Go Araki
IPC分类号： H04N1/60 , G06K9/00
CPC分类号： G06K9/38 , H04N1/60
摘要： An image forming apparatus is provided with a resolution conversion unit 101 that integrates n pixels that are contiguous in the sub-scanning direction, and that determines an average value of pixel values of the n pixels as a pixel value of integrated pixels, a quantization unit 103 that quantizes the pixel value of the integrated pixels to N levels, an image analysis unit 100 that performs first judgment processing for judging whether the difference between the pixel values of the n input pixels exceeds a threshold value set in advance, and second judgment processing for judging whether a direction in which the pixel values of the n input pixels becomes greater is a forward direction of the sub-scanning direction or an opposite direction, and a pixel selection unit 104 that determines n output pixels, based on the judgment results, from a quantization result of the integrated pixels.
摘要翻译：图像形成装置设置有分辨率转换单元101，其对在副扫描方向上连续的n个像素进行积分，并且将n个像素的像素值的平均值确定为积分像素的像素值，量化单元 103，其将积分像素的像素值量化为N个电平;图像分析单元100，执行用于判断n个输入像素的像素值之间的差是否超过预先设定的阈值的第一判断处理，以及第二判断处理用于判断n个输入像素的像素值是否变大的方向是副扫描方向或相反方向的正向，以及基于判断结果确定n个输出像素的像素选择单元104，从集成像素的量化结果。

13. 发明申请

US20100103464A1 IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD 审中-公开
标题翻译：图像处理装置和图像处理方法
公开(公告)号：US20100103464A1
公开(公告)日：2010-04-29
申请号：US12604521
申请日：2009-10-23
申请人： Yuuji Takayama , Hisashi Ishikawa , Tomoyuki Saiki , Go Araki
发明人： Yuuji Takayama , Hisashi Ishikawa , Tomoyuki Saiki , Go Araki
IPC分类号： G06K15/00
CPC分类号： H04N1/4052 , H04N1/4056
摘要： An input image analysis unit (100) analyzes the difference value between two pixels adjacent in the subscanning direction in an input image having the first number of tone levels. A vertical resolution conversion unit (101) averages the two pixels to generate average image data. A multi-level error diffusion processing unit (103) performs tone level conversion for the average image data to generate low-level image data. An output pixel selection unit (104) selects two output pixel values for each pixel of the low-level image data based on the analysis result of the input image analysis unit (100), thereby creating output image data having the second number of tone levels.
摘要翻译：输入图像分析单元（100）分析具有第一音调级数的输入图像中的副扫描方向相邻的两个像素之间的差值。垂直分辨率转换单元（101）对两个像素进行平均以生成平均图像数据。多级误差扩散处理单元（103）对平均图像数据执行音调电平转换以产生低电平图像数据。输出像素选择单元（104）基于输入图像分析单元（100）的分析结果为低级图像数据的每个像素选择两个输出像素值，从而创建具有第二数量音调级别的输出图像数据。

14. 发明授权

US08335020B2 Image forming apparatus and control method thereof 有权
标题翻译：图像形成装置及其控制方法
公开(公告)号：US08335020B2
公开(公告)日：2012-12-18
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
IPC分类号： H04N1/409
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。

15. 发明申请

US20100103442A1 IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF 有权
标题翻译：图像形成装置及其控制方法
公开(公告)号：US20100103442A1
公开(公告)日：2010-04-29
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： G03F3/08
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。

16. 发明授权

US08885214B2 Color image processing apparatus which reduces the amount of color materials consumed that are used to form a color image with reference to an index with high utility 有权
标题翻译：彩色图像处理装置，其参考高效率的指标，减少用于形成彩色图像的消耗的色素的量
公开(公告)号：US08885214B2
公开(公告)日：2014-11-11
申请号：US13209309
申请日：2011-08-12
申请人： Tomoyuki Saiki
发明人： Tomoyuki Saiki
IPC分类号： G06F3/12 , H04N1/60 , G03F3/08 , H04N1/46 , H04N1/36
CPC分类号： H04N1/6027 , H04N1/6016
摘要： The present invention provides a color image processing apparatus which reduces the amount of color materials consumed that are used to form a color image with reference to an index with high utility. To accomplish this, a color image forming apparatus of the present invention is a color image processing apparatus which applies image processing to image data of an input color image, and outputs the processed image data, and which changes tone values of respective colors of the color image, so that a conversion result obtained when image data of the color image are converted into amounts of color materials becomes an amount based on a reference conversion result, the reference conversion result being obtained when the image data are color-converted by a predetermined color conversion method and the converted data is further converted into an amount of a color material.
摘要翻译：本发明提供了一种彩色图像处理装置，其参考高效率的指标来减少用于形成彩色图像的消耗的颜色材料的量。为了实现这一点，本发明的彩色图像形成装置是对输入彩色图像的图像数据进行图像处理的彩色图像处理装置，并且输出处理后的图像数据，并且改变颜色的各种颜色的色调值使得当彩色图像的图像数据被转换成颜色材料的量时获得的转换结果变为基于参考转换结果的量，当将图像数据以预定颜色进行颜色转换时获得参考转换结果转换方法和转换后的数据进一步转换为颜色材料的量。

17. 发明授权

US08666271B2 Image forming apparatus and storage medium for image quality stabilization 有权
标题翻译：用于图像质量稳定的图像形成装置和存储介质
公开(公告)号：US08666271B2
公开(公告)日：2014-03-04
申请号：US13117035
申请日：2011-05-26
申请人： Tomoyuki Saiki
发明人： Tomoyuki Saiki
IPC分类号： G03G15/00 , G03G15/01
CPC分类号： G03G15/5008 , G03G15/043
摘要： An image forming apparatus is capable of more directly solving a problem of unevenly formed line images. The image forming apparatus includes a rotatable photosensitive member, a light emission unit configured to emit a laser beam based on image information, and a transfer unit configured to transfer a toner image developed on the photosensitive member. The image forming apparatus acquires variable speed information, which indicates a variable rotation speed of the photosensitive member. In addition, the image forming apparatus executes image position correction on the image information based on the acquired variable speed information.
摘要翻译：图像形成装置能够更直接地解决不均匀形成的线图像的问题。图像形成装置包括可旋转感光构件，被配置为基于图像信息发射激光束的发光单元和被配置为转印在感光构件上显影的调色剂图像的转印单元。图像形成装置获取指示感光构件的可变转速的可变速度信息。此外，图像形成装置基于获取的可变速度信息对图像信息执行图像位置校正。

18. 发明申请

US20110076040A1 IMAGE FORMING APPARATUS AND DENSITY UNEVENNESS DETECTION METHOD 有权
标题翻译：图像形成装置和密度不足检测方法
公开(公告)号：US20110076040A1
公开(公告)日：2011-03-31
申请号：US12891336
申请日：2010-09-27
申请人： Hikaru Uchidate , Tomoyuki Saiki , Tae Matsumoto
发明人： Hikaru Uchidate , Tomoyuki Saiki , Tae Matsumoto
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/0131 , G03G15/0194 , G03G2215/00059 , G03G2215/0129
摘要： A plurality of test patches each including a dark and light image which has density unevenness of a predetermined period in which the plurality of test patches are differentiated in phase difference relative to a phase of density unevenness induced by rotational unevenness occurring at a predetermined period in the motor for driving a photosensitive drum is formed. Then, density information of the plurality of test patches with is detected by a density sensor 41, and the phase of the density unevenness is obtained based on detection results (density information) of the plurality of test patches as well as based on a phase difference corresponding to a test patch whose density unevenness is a predetermined value in amplitude.
摘要翻译：多个测试贴片，每个测试贴片包括暗光和光图像，其具有预定周期的浓度不均匀性，其中多个测试贴片相对于在预定时间段内以预定时间段发生的旋转不均匀性引起的浓度不均匀相位相差形成用于驱动感光鼓的电机。然后，通过密度传感器41检测出的多个测试块的密度信息，并且基于多个测试块的检测结果（密度信息）以及相位差来获得浓度不均匀的相位对应于其浓度不均匀度为预定值的测试片。

19. 发明授权

US08737855B2 Image forming apparatus and density unevenness detection method 有权
标题翻译：图像形成装置和密度不均匀检测方法
公开(公告)号：US08737855B2
公开(公告)日：2014-05-27
申请号：US12891336
申请日：2010-09-27
申请人： Hikaru Uchidate , Tomoyuki Saiki , Tae Matsumoto
发明人： Hikaru Uchidate , Tomoyuki Saiki , Tae Matsumoto
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/0131 , G03G15/0194 , G03G2215/00059 , G03G2215/0129
摘要： A plurality of test patches each including a dark and light image which has density unevenness of a predetermined period in which the plurality of test patches are differentiated in phase difference relative to a phase of density unevenness induced by rotational unevenness occurring at a predetermined period in the motor for driving a photosensitive drum is formed. Then, density information of the plurality of test patches with is detected by a density sensor 41, and the phase of the density unevenness is obtained based on detection results (density information) of the plurality of test patches as well as based on a phase difference corresponding to a test patch whose density unevenness is a predetermined value in amplitude.
摘要翻译：多个测试贴片，每个测试贴片包括暗光和光图像，其具有预定周期的浓度不均匀性，其中多个测试贴片相对于在预定时间段内以预定时间段发生的旋转不均匀性引起的浓度不均匀相位相差形成用于驱动感光鼓的电机。然后，通过密度传感器41检测出的多个测试块的密度信息，并且基于多个测试块的检测结果（密度信息）以及相位差来获得浓度不均匀的相位对应于其浓度不均匀度为预定值的测试片。

20. 发明申请

US20120050766A1 COLOR IMAGE PROCESSING APPARATUS AND STORAGE MEDIUM 有权
标题翻译：彩色图像处理设备和存储介质
公开(公告)号：US20120050766A1
公开(公告)日：2012-03-01
申请号：US13209309
申请日：2011-08-12
申请人： Tomoyuki Saiki
发明人： Tomoyuki Saiki
IPC分类号： H04N1/60
CPC分类号： H04N1/6027 , H04N1/6016
摘要： The present invention provides a color image processing apparatus which reduces the amount of color materials consumed that are used to form a color image with reference to an index with high utility. To accomplish this, a color image forming apparatus of the present invention is a color image processing apparatus which applies image processing to image data of an input color image, and outputs the processed image data, and which changes tone values of respective colors of the color image, so that a conversion result obtained when image data of the color image are converted into amounts of color materials becomes an amount based on a reference conversion result, the reference conversion result being obtained when the image data are color-converted by a predetermined color conversion method and the converted data is further converted into an amount of a color material.
摘要翻译：本发明提供了一种彩色图像处理装置，其参考高效率的指标来减少用于形成彩色图像的消耗的颜色材料的量。为了实现这一点，本发明的彩色图像形成装置是对输入彩色图像的图像数据进行图像处理的彩色图像处理装置，并且输出处理后的图像数据，并且改变颜色的各种颜色的色调值使得当彩色图像的图像数据被转换成颜色材料的量时获得的转换结果变为基于参考转换结果的量，当将图像数据以预定颜色进行颜色转换时获得参考转换结果转换方法和转换后的数据进一步转换为颜色材料的量。

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