公开(公告)号：US20050248789A1

公开(公告)日：2005-11-10

申请号：US11113986

申请日：2005-04-26

申请人： Hiroshi Kita ,  Hiroki Tezuka ,  Yoichiro Maebashi

发明人： Hiroshi Kita ,  Hiroki Tezuka ,  Yoichiro Maebashi

IPC分类号： B41J29/46 ,  B41J2/525 ,  G03G15/00 ,  G03G15/01 ,  H04N1/46 ,  H04N1/60 ,  H04N1/56

CPC分类号： G03G15/5062

摘要： Patches of black and a mixture of color coloring materials are formed on a recording medium, and the chromaticities of the patches are detected (S11). Black tonality data serving as reference lightnesses corresponding to respective tonality data are acquired from pieces of lightness information contained in the detected chromaticities corresponding to the respective tonalities of the black patches. Pieces of black lightness information are corrected on the basis of the acquired black tonality data and the detection results of the black patches. Chromaticities corresponding to the black tonality data are defined as target chromaticities, and the mixture rates of the color coloring materials are corrected on the basis of the target chromaticities and the chromaticities obtained by detecting the patches using the color coloring materials.

摘要翻译： 在记录介质上形成黑色补片和彩色着色材料的混合物，并检测色块的色度（S11）。 从包含在与黑色斑块的各色调相对应的检测色度中的亮度信息中获取与各色调数据对应的作为参照亮度的黑色色调数据。 基于所获取的黑色调性数据和黑色斑块的检测结果来校正黑色亮度信息。 将与黑色调性数据相对应的色度定义为目标色度，并且基于目标色度和通过使用彩色着色材料检测贴片而获得的色度校正着色材料的混合率。

公开(公告)号：US06853815B2

公开(公告)日：2005-02-08

申请号：US10235894

申请日：2002-09-06

申请人： Hiroki Tezuka ,  Yoichiro Maebashi

发明人： Hiroki Tezuka ,  Yoichiro Maebashi

IPC分类号： G03G15/00 ,  B41J29/393 ,  G03G15/01 ,  H04N1/60 ,  H04N1/40

CPC分类号： B41J29/393 ,  G03G15/01 ,  G03G15/0131 ,  G03G15/5058 ,  G03G2215/00042 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/00067 ,  H04N1/6033

摘要： In a color image forming apparatus, a color toner patch for controlling density or chromaticity may be detected by a color sensor and fed back to process conditions so as to control density or chromaticity of a final output image.However, a white reference board for proofreading sensor output is expensive, and may have paper powder, toner or ink scattered thereon to become no longer usable as a reference board.The present invention provides a color identification method and a color image forming apparatus exploitable for density or chromaticity control by using a color sensor without using the reference board.In the present invention, a gray patch of black and a process gray patch of yellow, magenta and cyan are formed on a transfer medium, the chromaticity is detected without using a criterion for sensor output proofreading, and relative comparison is made between the chromaticities detected from the above two types of gray patches by using as a standard the gray patch of black which is almost achromatic, and if the chromaticities are consistent with each other, the process gray patch is judged to be achromatic.

摘要翻译： 在彩色图像形成装置中，可以通过颜色传感器检测用于控制密度或色度的彩色调色剂片，并将其反馈到处理条件，以便控制最终输出图像的浓度或色度。然而，用于校对的白色参考板 传感器输出是昂贵的，并且可能具有散布在其上的纸粉，调色剂或墨水不再可用作参考板。本发明提供一种颜色识别方法和彩色图像形成装置，其可以通过使用颜色来进行浓度或色度控制 传感器，而不使用参考板。在本发明中，在转印介质上形成了一个黑色的灰色斑块和一个黄色，品红色和青色的过程灰色补丁，在不使用传感器输出校对标准的情况下检测色度，而相对 通过使用黑色的灰色补丁作为标准，从上述两种类型的灰色片段检测的色度之间进行比较 几乎是无色的，并且如果色度彼此一致，则判断过程灰色片是无色的。

公开(公告)号：US07239427B2

公开(公告)日：2007-07-03

申请号：US10285566

申请日：2002-11-01

申请人： Hiroki Tezuka ,  Yoichiro Maebashi

发明人： Hiroki Tezuka ,  Yoichiro Maebashi

IPC分类号： H04N1/40

CPC分类号： H04N1/6033

摘要： Provided are a method of making correction for color sensor output values in color image forming apparatus, which succeeds in improving color reproducibility of the color image forming apparatus, and the color image forming apparatus provided with the method. For this purpose, the apparatus and method according to the present invention make correction for deviation due to a color detecting device, of a color sensor output value Si in detection of a fixed patch; set a boundary turning point D between an ignorable region of toner bearing amounts where the influence of a color of a transferring material is ignorable on chromaticity of the patch and an unignorable region of toner bearing amounts where the influence is unignorable; make further correction for a corrected value Si′w after the correction for the deviation due to the color detecting device, using different methods for the unignorable region and the ignorable region, thereby to eliminate the influence of the color of the transferring material on the chromaticity of the patch.

摘要翻译： 提供了一种对彩色图像形成装置中的彩色传感器输出值进行校正的方法，该彩色图像形成装置成功地提高了彩色图像形成装置的色彩再现性，并且提供了该方法的彩色图像形成装置。 为此，根据本发明的装置和方法，在检测固定片时，对颜色检测装置的颜色检测器输出值S SUB进行偏差校正; 在调色剂承载量的可忽略区域之间设置边界转折点D，其中转印材料的颜色的影响对于贴片的色度和不可忽视的影响的调色剂承载量的不可靠区域是可忽略的; 对由于颜色检测装置引起的偏差进行校正之后，对不可视区域和可忽略区域进行不同的方法，进一步校正校正值S W 从而消除了转印材料的颜色对贴片的色度的影响。

公开(公告)号：US06985678B2

公开(公告)日：2006-01-10

申请号：US10653944

申请日：2003-09-04

申请人： Yoichiro Maebashi ,  Tomoaki Nakai ,  Hiroki Tezuka

发明人： Yoichiro Maebashi ,  Tomoaki Nakai ,  Hiroki Tezuka

IPC分类号： G03G15/01 ,  G03G15/00

CPC分类号： G03G15/5058 ,  G03G15/0131 ,  G03G15/5041 ,  G03G2215/00059 ,  G03G2215/0119

摘要： A color image forming apparatus and related method forms a color image on a transfer material. The apparatus is provided with a first optical sensor capable of detecting optical reflection characteristics of an unfixed toner image and a second optical sensor capable of detecting optical reflection characteristics of a toner image after fixation. A first forming step forms a mixed-color toner image including plural toners. A calculation step calculates, based on optical reflection characteristics of the mixed-color toner image detected by the second optical sensor, a condition that the mixed-color toner image becomes achromatic. A second forming step forms a toner image corresponding to the calculated toner mixing ratio. A processing step processes an output of the first optical sensor based on the optical reflection characteristics of the monochromatic toner image detected by the first optical sensor.

摘要翻译： 彩色图像形成装置和相关方法在转印材料上形成彩色图像。 该装置设置有能够检测未定影调色剂图像的光学反射特性的第一光学传感器和能够检测固色后调色剂图像的光学反射特性的第二光学传感器。 第一形成步骤形成包括多个调色剂的混色调色剂图像。 计算步骤基于由第二光学传感器检测的混合色调色剂图像的光学反射特性来计算混色调色剂图像变为无色的条件。 第二形成步骤形成对应于计算出的调色剂混合比的调色剂图像。 处理步骤基于由第一光学传感器检测到的单色调色剂图像的光学反射特性来处理第一光学传感器的输出。

公开(公告)号：US06898381B2

公开(公告)日：2005-05-24

申请号：US10286775

申请日：2002-11-04

申请人： Yoichiro Maebashi ,  Tomoaki Nakai ,  Hiroki Tezuka

发明人： Yoichiro Maebashi ,  Tomoaki Nakai ,  Hiroki Tezuka

IPC分类号： G03G15/00 ,  G03G15/01

CPC分类号： G03G15/5058 ,  G03G15/01 ,  G03G15/0131 ,  G03G15/5062 ,  G03G2215/00042 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/00067 ,  G03G2215/0119

摘要： A color image forming apparatus includes a first density detecting unit for detecting a density of a first detection toner image formed on an image bearing member or a transferring material carrying member, and a second density detecting unit for detecting a density of a second detection toner image fixed onto a transferring material, and executes image density control based on a detection result of the first density detecting unit and a detection result of the second density detecting unit. A detecting light application position of the first density detecting unit and a detection light application position of the second density detecting unit are almost equal relative to a perpendicular direction to a transferring material conveying direction. It is thereby possible to shorten time required for density control and to prevent deterioration of density control accuracy caused by a temporal change and a positional change in the density of a detection toner patch.

摘要翻译： 彩色图像形成装置包括：第一浓度检测单元，用于检测形成在图像承载部件或转印材料承载部件上的第一检测调色剂图像的浓度;以及第二浓度检测单元，用于检测第二检测调色剂图像的浓度 固定在转印材料上，并且基于第一浓度检测单元的检测结果和第二浓度检测单元的检测结果执行图像浓度控制。 第一浓度检测单元的检测光施加位置和第二浓度检测单元的检测光施加位置相对于转印材料输送方向的垂直方向几乎相等。 从而可以缩短密度控制所需的时间并且防止由于时间变化引起的浓度控制精度的劣化和检测调色剂贴片的密度的位置变化。

公开(公告)号：US06961526B2

公开(公告)日：2005-11-01

申请号：US10340682

申请日：2003-01-13

申请人： Hiroki Tezuka ,  Toshiki Nakayama ,  Seiji Uchiyama ,  Yoichiro Maebashi

发明人： Hiroki Tezuka ,  Toshiki Nakayama ,  Seiji Uchiyama ,  Yoichiro Maebashi

IPC分类号： G03G15/00

CPC分类号： G03G15/5062 ,  G03G2215/00063 ,  G03G2215/00067 ,  G03G2215/00586 ,  G03G2215/0119

摘要： An image forming apparatus is provided in which, by detecting an image formed on a recording medium, at least one of the density and chromaticity of the image can be properly controlled. The image forming apparatus includes an image forming unit for forming a toner image on an image carrier, a transfer unit for transferring the toner image formed by the image forming unit onto a transfer material in a transfer position, a fusing unit for fusing the toner image transferred by the transfer unit on the transfer material, a feed-direction changing unit for changing over a feed direction of the transfer material so that the transfer material having the toner image fused by the fusing unit is reversed and fed to the transfer position, a detecting unit for detecting, in a predetermined detecting position, the toner image fused on the transfer material by the fusing unit, and a control unit for controlling the image forming unit based on result detected by the detecting unit.

摘要翻译： 提供一种图像形成装置，其中通过检测形成在记录介质上的图像，可以适当地控制图像的浓度和色度中的至少一个。 图像形成装置包括用于在图像载体上形成调色剂图像的图像形成单元，用于将由图像形成单元形成的调色剂图像转印到转印位置的转印材料上的转印单元，用于使调色剂图像定影的定影单元 由转印单元转印在转印材料上的进给方向改变单元，用于改变转印材料的进料方向，使得具有由定影单元熔化的调色剂图像的转印材料反转并输送到转印位置， 检测单元，用于在预定检测位置检测通过定影单元熔合在转印材料上的调色剂图像;以及控制单元，用于基于由检测单元检测到的结果来控制图像形成单元。

公开(公告)号：US07982908B2

公开(公告)日：2011-07-19

申请号：US11113986

申请日：2005-04-26

申请人： Hiroshi Kita ,  Hiroki Tezuka ,  Yoichicro Maebashi

发明人： Hiroshi Kita ,  Hiroki Tezuka ,  Yoichicro Maebashi

IPC分类号： G06F15/00 ,  G03G15/00 ,  G03F3/08

CPC分类号： G03G15/5062

摘要： Patches of black and a mixture of color coloring materials are formed on a recording medium, and the chromaticities of the patches are detected (S11). Black tonality data serving as reference lightnesses corresponding to respective tonality data are acquired from pieces of lightness information contained in the detected chromaticities corresponding to the respective tonalities of the black patches. Pieces of black lightness information are corrected on the basis of the acquired black tonality data and the detection results of the black patches. Chromaticities corresponding to the black tonality data are defined as target chromaticities, and the mixture rates of the color coloring materials are corrected on the basis of the target chromaticities and the chromaticities obtained by detecting the patches using the color coloring materials.

摘要翻译： 在记录介质上形成黑色补片和彩色着色材料的混合物，并检测色块的色度（S11）。 从包含在与黑色斑块的各色调相对应的检测色度中的亮度信息中获取与各色调数据对应的作为参照亮度的黑色色调数据。 基于所获取的黑色调性数据和黑色斑块的检测结果来校正黑色亮度信息。 将与黑色调性数据相对应的色度定义为目标色度，并且基于目标色度和通过使用彩色着色材料检测贴片而获得的色度校正着色材料的混合率。

公开(公告)号：US07598971B2

公开(公告)日：2009-10-06

申请号：US11444406

申请日：2006-06-01

申请人： Hiroki Tezuka ,  Yoshiyuki Akiba ,  Hiroki Kitamura

发明人： Hiroki Tezuka ,  Yoshiyuki Akiba ,  Hiroki Kitamura

IPC分类号： G03G15/01 ,  B41J2/525 ,  B41J2/52

CPC分类号： H04N1/506 ,  G03G15/0142 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0158 ,  H04N2201/0471 ,  H04N2201/04722

摘要： A color image forming apparatus includes a coordinate conversion part, which converts a ordinate value, for executing a misregistration correction in the unit of a pixel; a gradation conversion part, which converts a gradation level, for executing a misregistration correction in a unit less than a pixel; and a judgment part, which detects a feature of the image and judges whether or not to execute the misregistration correction in a unit less than a pixel by the gradation conversion part. The judgment part compares the gradation level in an object pixel and a pixel adjacent in a sub-scanning direction, thereby judging whether or not to execute the misregistration correction in a unit less than a pixel. Thus, the invention enables to distinguish an image to be subjected to the registration correction in a unit less than a pixel and an image not to be subjected to such correction in a simple manner and also in consideration of the image color.

摘要翻译： 彩色图像形成装置包括坐标转换部分，其转换纵坐标值，用于以像素为单位执行不对准校正; 灰度转换部分，其转换灰度级，用于执行小于像素的单位的对准校正; 以及判断部分，其检测图像的特征，并且通过灰度转换部分判断是否以小于像素的单位执行对准校正。 判断部分比较对象像素中的灰度级与副扫描方向相邻的像素，从而判断是否以小于像素的单位执行对准校正。 因此，本发明能够以简单的方式并且考虑图像颜色，以小于像素的单位和不进行这种校正的图像来区分要进行注册校正的图像。

公开(公告)号：US20060023272A1

公开(公告)日：2006-02-02

申请号：US11187808

申请日：2005-07-25

申请人： Hiroki Tezuka

发明人： Hiroki Tezuka

IPC分类号： G06K9/00

CPC分类号： H04N1/6033

摘要： A calibration method for calibrating a color image forming apparatus includes: a detection step of detecting the color of a patch formed on a recording medium by the color image forming apparatus using a color sensor; a conversion step of converting a color signal in the first color specification system as the detection result at the detection step into a color signal in the second color specification system; and an adjustment step of adjusting at least one of the image forming conditions for the color image forming apparatus, based on the color signal converted at the conversion step; wherein the conversion conditions at the color signal conversion step are different depending on the attributes of the patch.

摘要翻译： 用于校准彩色图像形成装置的校准方法包括：检测步骤，通过使用颜色传感器的彩色图像形成装置检测在记录介质上形成的贴片的颜色; 将第一颜色指定系统中的颜色信号作为检测步骤的检测结果转换为第二颜色指定系统中的颜色信号的转换步骤; 以及调整步骤，基于在转换步骤转换的颜色信号来调整彩色图像形成装置的图像形成条件中的至少一个; 其中，根据所述贴片的属性，所述颜色信号转换步骤的转换条件是不同的。

公开(公告)号：US08040581B2

公开(公告)日：2011-10-18

申请号：US11187808

申请日：2005-07-25

申请人： Hiroki Tezuka

发明人： Hiroki Tezuka

IPC分类号： G03F3/08

CPC分类号： H04N1/6033

摘要： A calibration method for calibrating a color image forming apparatus includes detecting the color of a patch formed on a recording medium by the color image forming apparatus using a color sensor, converting a detected color signal in a first color specification system into a color signal in a second color specification system, and adjusting at least one of the image forming conditions for the color image forming apparatus, based on the color signal converted in the conversion step, where the conversion conditions in the color signal conversion are different depending on the attributes of the patch.

摘要翻译： 用于校准彩色图像形成装置的校准方法包括：使用颜色传感器检测由彩色图像形成装置在记录介质上形成的贴片的颜色，将第一颜色指定系统中检测到的彩色信号转换为彩色信号， 第二颜色指定系统，并且基于在转换步骤中转换的颜色信号，调整彩色图像形成装置的图像形成条件中的至少一个，其中，颜色信号转换中的转换条件根据 补丁。