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1. 发明授权

US08098406B2 Image forming apparatus capable of suppressing color variation due to misregistration of colors, image forming method, and computer-readable medium 有权
标题翻译：能够抑制由于颜色不对齐引起的颜色变化的图像形成装置，图像形成方法和计算机可读介质
公开(公告)号：US08098406B2
公开(公告)日：2012-01-17
申请号：US12071042
申请日：2008-02-14
申请人： Soh Hirota , Osamu Yamada , Toshio Tsuboi
发明人： Soh Hirota , Osamu Yamada , Toshio Tsuboi
IPC分类号： H04N1/405
CPC分类号： H04N1/52
摘要： An image forming apparatus performs dither processing on image data to form an image subjected to pseudo-halftone processing. The image forming apparatus includes a dither processing unit that performs dither processing on image data, and a dither pattern generation unit that generates a dither matrix for use in the dither processing, in accordance with an output gradation level. The dither matrix has a size of M×N pixels, and has a plurality of halftone dots arranged in a predetermined pattern in accordance with the output gradation level in order to represent a gradation of each color. The plurality of halftone dots are arranged in the dither matrix such that the halftone dots corresponding to at least two colors are substantially identical in color area ratio to each other in the dither matrix irrespective of a relative position with respective to the colors.
摘要翻译：图像形成装置对图像数据进行抖动处理以形成经受假半色调处理的图像。图像形成装置包括对图像数据进行抖动处理的抖动处理单元和根据输出灰度级产生用于抖动处理的抖动矩阵的抖动图案生成单元。抖动矩阵具有M×N个像素的尺寸，并且具有根据输出灰度等级以预定图案排列的多个半色调点，以便表示每种颜色的灰度。多个半色调点被布置在抖动矩阵中，使得对应于至少两种颜色的半色调点在抖动矩阵中的颜色面积比基本上相同，而与相对于颜色的相对位置无关。

2. 发明申请

US20110044705A1 COLOR IMAGE FORMING APPARATUS 有权
标题翻译：彩色图像形成装置
公开(公告)号：US20110044705A1
公开(公告)日：2011-02-24
申请号：US12842514
申请日：2010-07-23
申请人： Hironori AKASHI , Soh Hirota , Mitsuru Obara , Takashi Harashima , Kanako Kibihara
发明人： Hironori AKASHI , Soh Hirota , Mitsuru Obara , Takashi Harashima , Kanako Kibihara
IPC分类号： G03G15/08
CPC分类号： G03G15/5058 , G03G15/0131 , G03G15/0853 , G03G2215/00059 , G03G2215/00063
摘要： A color image forming apparatus having photosensitive members; developing devices for developing electrostatic latent images formed on the photosensitive members into toner images with developers comprising toner and carriers; toner concentration sensors for detecting toner concentrations of the developers in the respective developing devices; a toner image bearing member for bearing the toner images temporarily; a toner adherence amount sensor for detecting toner adherence amounts of the toner images held on the image bearing member; and a controller for calculating, with respect to the developing devices, individual optimal developing bias voltage ranges within which a target toner adherence amount can be achieved while the toner concentrations of the developers are within a predetermined toner concentration range from a lower limit to an upper limit, so as to specify a common optimal developing bias voltage range that are commonly suitable for all the developing devices to achieve the target toner adherence amount while the toner concentrations of the developers in the developing devices are within the predetermined toner concentration range, and for calculating target toner concentrations of the developers in the respective developing devices to achieve the target toner adherence amount while a voltage within the common optimal developing bias voltage range is applied between each of the photosensitive members and each of the developing devices.
摘要翻译：具有感光部件的彩色图像形成装置; 用于将形成在感光构件上的静电潜像显影成具有包括调色剂和载体的显影剂的调色剂图像的显影装置; 用于检测各显影装置中的显影剂的调色剂浓度的调色剂浓度传感器; 用于临时承载调色剂图像的调色剂图像承载部件; 调色剂附着量传感器，用于检测保持在图像承载部件上的调色剂图像的调色剂附着量; 以及控制器，用于相对于显影装置计算个体最佳显影偏压电压范围，其中可以在显影剂的调色剂浓度在从下限到上限的预定调色剂浓度范围内实现目标调色剂附着量限定，以便指定通常适用于所有显影装置以实现目标调色剂粘附量的共同的最佳显影偏压电压范围，同时显影装置中的显影剂的调色剂浓度在预定调色剂浓度范围内，并且对于计算各显影装置中的显影剂的目标调色剂浓度，以实现目标调色剂附着量，同时在每个感光构件和每个显影装置之间施加共同的最佳显影偏压电压范围内的电压。

3. 发明授权

US07522864B2 Image forming apparatus and image forming method 有权
标题翻译：图像形成装置及图像形成方法
公开(公告)号：US07522864B2
公开(公告)日：2009-04-21
申请号：US11600087
申请日：2006-11-16
申请人： Kazuomi Sakatani , Soh Hirota , Masahiro Kouzaki , Mitsuru Obara , Masaki Tanaka
发明人： Kazuomi Sakatani , Soh Hirota , Masahiro Kouzaki , Mitsuru Obara , Masaki Tanaka
IPC分类号： G03G15/01
CPC分类号： G03G15/0126
摘要： In an image forming apparatus of the present invention, a developing unit for magenta contains magenta-type toner for pseudo full-color image forming whose chromaticity point is shifted closer to yellow hue on a chromaticity diagram, in comparison with genuine-magenta toner for full-color image forming, and likewise, a developing unit for cyan contains cyan-type toner for the pseudo full-color image forming whose chromaticity point is shifted closer to yellow hue on the chromaticity diagram, in comparison with genuine-cyan toner for the full-color image forming.
摘要翻译：在本发明的图像形成装置中，用于洋红的显影单元包含用于伪全色图像形成的品红色调色剂，其色度点与色度图上的黄色色调相比变化，与正品品红色调色剂相比较相似地，用于青色的显影单元包含用于伪全色图像形成的青色调色剂，其色度点在色度图上更接近于黄色色调，与用于全色的真正青色调色剂相比彩色图像形成。

4. 发明申请

US20090067860A1 IMAGE FORMING APPARATUS, TONE CORRECTION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM RECORDED WITH TONE CORRECTION PROGRAM 有权
标题翻译：图像形成装置，音调校正方法和用音频校正程序记录的计算机可读记录介质
公开(公告)号：US20090067860A1
公开(公告)日：2009-03-12
申请号：US12205351
申请日：2008-09-05
申请人： Tetsuya SAKAI , Soh Hirota , Masahiro Kouzaki , Takashi Harashima , Kazuomi Sakatani
发明人： Tetsuya SAKAI , Soh Hirota , Masahiro Kouzaki , Takashi Harashima , Kazuomi Sakatani
IPC分类号： G03G15/00
CPC分类号： G03G15/5062 , G03G15/0131 , G03G2215/00067 , G03G2215/0161
摘要： The present invention aims to provide an image forming apparatus and the like that perform a highly-accurate tone correction in a relatively short time and includes the following: a pattern former, with use of each image forming unit, on a sheet, forming tone patches in the main or sub scanning direction (41k,c,y,m) and aligning markers, which indicate positions of the tone patches, in the same direction as the tone patches (42k,c,y,m); a pattern reader reading the sheet with the tone patches and markers formed thereon; a coordinate determiner determining coordinates of the tone patches in the direction of the aligned tone patches based on the read markers (42k,c,y,m); a density determiner determining densities of the tone patches (41k,c,y,m) read based on the determined coordinates; and an updating part updating the tone correction table based on relationships between the determined densities and tone levels.
摘要翻译：本发明的目的在于提供一种在较短时间内执行高精度色调校正的图像形成装置等，其包括以下：使用各图像形成单元的图案形成装置，在片材上形成色调在主扫描方向（或副扫描方向）（41k，c，y，m）和指示色调位置的对准标记与色调片（42k，c，y，m）的方向相同。读取片材的图案读取器，其上形成有色调和标记; 坐标确定器，基于读取的标记（42k，c，y，m）确定对齐色调方向上的色调块的坐标; 确定基于所确定的坐标读取的色调块（41k，c，y，m）的密度的密度确定器; 以及更新部，基于确定的密度和音调级之间的关系来更新色调校正表。

5. 发明授权

US07212752B2 Image forming apparatus and a developing apparatus having a unit for determining a mixture ratio of two types of magnetic toner based on magnetic permeability and amount 失效
标题翻译：图像形成装置和具有用于基于磁导率和量确定两种类型的磁性调色剂的混合比的单元的显影装置
公开(公告)号：US07212752B2
公开(公告)日：2007-05-01
申请号：US10976773
申请日：2004-11-01
申请人： Soh Hirota , Masaki Tanaka , Masahiro Kouzaki , Kazuomi Sakatani , Mitsuru Obara
发明人： Soh Hirota , Masaki Tanaka , Masahiro Kouzaki , Kazuomi Sakatani , Mitsuru Obara
IPC分类号： G03G15/08
CPC分类号： G03G15/0853 , G03G15/0877 , G03G2215/0602 , G03G2215/0614
摘要： An electrophotographic image forming apparatus includes a developer reservoir for accommodating a single-component mixed developer including two types of toner having a generally identical hue and different reflection densities. A magnetic substance is added to one of the two types of toner. The apparatus also includes a detector for detecting a magnetic permeability of the developer in the developer reservoir and a unit for determining a mixture ratio of the two types of toner based on the magnetic permeability of the developer detected by the detector.
摘要翻译：电子照相成像设备包括用于容纳单组分混合显影剂的显影剂储存器，其包括具有大致相同色调和不同反射浓度的两种类型的调色剂。向这两种类型的调色剂之一加入磁性物质。该装置还包括用于检测显影剂储存器中的显影剂的磁导率的检测器和用于基于由检测器检测到的显影剂的磁导率来确定两种类型的调色剂的混合比的单元。

6. 发明授权

US08260160B2 Color image forming apparatus 有权
标题翻译：彩色图像形成装置
公开(公告)号：US08260160B2
公开(公告)日：2012-09-04
申请号：US12842514
申请日：2010-07-23
申请人： Hironori Akashi , Soh Hirota , Mitsuru Obara , Takashi Harashima , Kanako Kibihara
发明人： Hironori Akashi , Soh Hirota , Mitsuru Obara , Takashi Harashima , Kanako Kibihara
IPC分类号： G03G15/08 , G03G15/00
CPC分类号： G03G15/5058 , G03G15/0131 , G03G15/0853 , G03G2215/00059 , G03G2215/00063
摘要： A color image forming apparatus having photosensitive members; developing devices for developing electrostatic latent images formed on the photosensitive members into toner images with developers comprising toner and carriers; toner concentration sensors for detecting toner concentrations of the developers in the respective developing devices; a toner image bearing member for bearing the toner images temporarily; a toner adherence amount sensor for detecting toner adherence amounts of the toner images held on the image bearing member; and a controller for calculating, with respect to the developing devices, individual optimal developing bias voltage ranges within which a target toner adherence amount can be achieved while the toner concentrations of the developers are within a predetermined toner concentration range from a lower limit to an upper limit, so as to specify a common optimal developing bias voltage range that are commonly suitable for all the developing devices to achieve the target toner adherence amount while the toner concentrations of the developers in the developing devices are within the predetermined toner concentration range, and for calculating target toner concentrations of the developers in the respective developing devices to achieve the target toner adherence amount while a voltage within the common optimal developing bias voltage range is applied between each of the photosensitive members and each of the developing devices.
摘要翻译：具有感光部件的彩色图像形成装置; 用于将形成在感光构件上的静电潜像显影成具有包括调色剂和载体的显影剂的调色剂图像的显影装置; 用于检测各显影装置中的显影剂的调色剂浓度的调色剂浓度传感器; 用于临时承载调色剂图像的调色剂图像承载部件; 调色剂附着量传感器，用于检测保持在图像承载部件上的调色剂图像的调色剂附着量; 以及控制器，用于相对于显影装置计算个体最佳显影偏压电压范围，其中可以在显影剂的调色剂浓度在从下限到上限的预定调色剂浓度范围内实现目标调色剂附着量限定，以便指定通常适用于所有显影装置以实现目标调色剂粘附量的共同的最佳显影偏压电压范围，同时显影装置中的显影剂的调色剂浓度在预定调色剂浓度范围内，并且对于计算各显影装置中的显影剂的目标调色剂浓度，以实现目标调色剂附着量，同时在每个感光构件和每个显影装置之间施加共同的最佳显影偏压电压范围内的电压。

7. 发明授权

US07983507B2 Image fo ming device and image forming method 有权
标题翻译：图像处理装置和图像形成方法
公开(公告)号：US07983507B2
公开(公告)日：2011-07-19
申请号：US11806406
申请日：2007-05-31
申请人： Masahiro Kouzaki , Tetsuya Sakai , Kazuomi Sakatani , Soh Hirota , Takashi Harashima
发明人： Masahiro Kouzaki , Tetsuya Sakai , Kazuomi Sakatani , Soh Hirota , Takashi Harashima
IPC分类号： G06K9/40 , G06K15/00
CPC分类号： G06K15/02 , G06K15/027 , H04N1/405 , H04N1/4092
摘要： An image forming device for forming an image on an image carrier using a different grayscale reproduction method for each of two or more different attributes contained in portions of the image. The image forming device forms a different standard pattern in one-to-one correspondence with each different attribute contained in the image portions, using a grayscale reproduction method used for reproducing image portions containing the attribute, detects density of each standard pattern formed by the standard pattern forming unit, sets, for each different attribute, a condition for correcting grayscale of the image portions containing the attribute, in accordance with the detected density, and corrects grayscale of the image portions in accordance with each condition set by the correction condition setting unit.
摘要翻译：一种图像形成装置，用于使用不同的灰度再现方法在图像载体中形成图像的图像中包含在图像的部分中的两个或多个不同属性中的每一个。图像形成装置使用用于再现包含该属性的图像部分的灰度再现方法，与包含在图像部分中的每个不同属性一一对应地形成不同的标准图案，检测由标准形成的每个标准图案的浓度图案形成单元，针对每个不同的属性设置根据检测到的浓度校正包含该属性的图像部分的灰度的条件，并且根据校正条件设置单元设置的每个条件校正图像部分的灰度。

8. 发明授权

US07676163B2 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：US07676163B2
公开(公告)日：2010-03-09
申请号：US12219923
申请日：2008-07-30
申请人： Kazuomi Sakatani , Soh Hirota , Masahiro Kouzaki , Mitsuru Obara , Masaki Tanaka
发明人： Kazuomi Sakatani , Soh Hirota , Masahiro Kouzaki , Mitsuru Obara , Masaki Tanaka
IPC分类号： G03G15/00
CPC分类号： G03G15/0126
摘要： In an image forming apparatus of the present invention, a developing unit for magenta contains magenta-type toner for pseudo full-color image forming whose chromaticity point is shifted closer to yellow hue on a chromaticity diagram, in comparison with genuine-magenta toner for full-color image forming, and likewise, a developing unit for cyan contains cyan-type toner for the pseudo full-color image forming whose chromaticity point is shifted closer to yellow hue on the chromaticity diagram, in comparison with genuine-cyan toner for the full-color image forming.
摘要翻译：在本发明的图像形成装置中，用于洋红的显影单元包含用于伪全色图像形成的品红色调色剂，其色度点与色度图上的黄色色调相比变化，与正品品红色调色剂相比较相似地，用于青色的显影单元包含用于伪全色图像形成的青色调色剂，其色度点在色度图上更接近于黄色色调，与用于全色的真正青色调色剂相比彩色图像形成。

9. 发明申请

US20080088862A1 Image forming apparatus, image processing method and image processing program 审中-公开
标题翻译：图像形成装置，图像处理方法和图像处理程序
公开(公告)号：US20080088862A1
公开(公告)日：2008-04-17
申请号：US11898755
申请日：2007-09-14
申请人： Takashi Harashima , Kazuomi Sakatani , Tetsuya Sakai , Soh Hirota , Masahiro Kouzaki
发明人： Takashi Harashima , Kazuomi Sakatani , Tetsuya Sakai , Soh Hirota , Masahiro Kouzaki
IPC分类号： G06K15/00 , G06K1/00 , G06K9/00
CPC分类号： H04N1/00867 , H04N1/00005 , H04N1/00031 , H04N1/00045 , H04N1/0005 , H04N1/00063 , H04N1/00068 , H04N1/00087 , H04N1/00883 , H04N1/4078
摘要： An image forming apparatus comprises: a reader to read image; an output part to output the image; an information giving part to give additional information to the image before the image is outputted by said output part; an output controller to make said output part output a plurality of test patterns for output level correction of additional information in different output levels; a data calculator for output level correction, to calculate data for output level correction of said additional information based on reading results drew by said reader from said outputted test patterns for output level correction of additional information; and an output level corrector to correct an output level of said additional information based on said calculated data for correction.
摘要翻译：一种图像形成装置，包括：读取器，用于读取图像; 用于输出图像的输出部分; 信息提供部分，用于在由所述输出部分输出图像之前向图像提供附加信息; 输出控制器，用于使所述输出部分输出多个测试图案，用于在不同输出电平中对附加信息进行输出电平校正; 用于输出电平校正的数据计算器，用于基于由所述读取器从所述输出的测试图案抽取的读取结果来计算用于所述附加信息的输出电平校正的数据，用于附加信息的输出电平校正; 以及输出电平校正器，用于基于所述计算的校正数据校正所述附加信息的输出电平。

10. 发明授权

US07248805B2 Image forming apparatus and developing unit 有权
标题翻译：成像设备和显影单元
公开(公告)号：US07248805B2
公开(公告)日：2007-07-24
申请号：US10976774
申请日：2004-11-01
申请人： Soh Hirota , Masaki Tanaka , Masahiro Kouzaki , Kazuomi Sakatani , Mitsuru Obara
发明人： Soh Hirota , Masaki Tanaka , Masahiro Kouzaki , Kazuomi Sakatani , Mitsuru Obara
IPC分类号： G03G15/08
CPC分类号： G03G15/0856 , G03G15/086 , G03G15/0877
摘要： An electrophotographic image forming apparatus includes a developing device including a developer reservoir for accommodating a mixed developer. The mixed developer includes a plurality of types of toner having a generally identical hue and different reflection densities. The apparatus also includes a replenishment device having a plurality of toner containers each accommodating one of the plurality of types of toner for replenishing the plurality of types of toner to the developer reservoir; a first detector for detecting whether each of the toner containers is completely empty of toner; and a second detector for detecting whether the developer reservoir is nearly or completely empty of mixed developer. A controller controls the replenishment device and allows or prohibits a printing operation based on the detection result of the first and the second detectors.
摘要翻译：电子照相图像形成装置包括显影装置，显影装置包括用于容纳混合显影剂的显影剂储存器。混合显影剂包括具有大致相同的色调和不同反射浓度的多种类型的调色剂。该装置还包括具有多个调色剂容器的补充装置，每个调色剂容器各自容纳多种类型的调色剂中的一种，用于将多种类型的调色剂补充到显影剂储存器; 用于检测每个调色剂容器是否完全没有调色剂的第一检测器; 以及用于检测显影剂储存器是否几乎或完全没有混合显影剂的第二检测器。控制器控制补充装置，并且允许或禁止基于第一和第二检测器的检测结果的打印操作。

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