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1. 发明授权

US08837001B2 Image forming apparatus and gradation correction method for the same 有权
标题翻译：图像形成装置及其灰度校正方法
公开(公告)号：US08837001B2
公开(公告)日：2014-09-16
申请号：US13705675
申请日：2012-12-05
申请人： Hideaki Tanaka , Takashi Harashima , Katsuyuki Hirata , Daiki Yamanaka , Kazuhiro Saito
发明人： Hideaki Tanaka , Takashi Harashima , Katsuyuki Hirata , Daiki Yamanaka , Kazuhiro Saito
IPC分类号： H04N1/405 , H04N1/00 , H04N1/60 , H04N1/407 , H04N1/04
CPC分类号： H04N1/60 , H04N1/00015 , H04N1/00023 , H04N1/00034 , H04N1/00045 , H04N1/00063 , H04N1/00087 , H04N1/04 , H04N1/4078 , H04N2201/0082
摘要： An image forming apparatus and a gradation correction method for the same are provided. An image forming apparatus includes an image forming section that forms a plurality of patch bands in a plurality of positions in a main scanning direction on an image bearing member, each of the plurality of patch bands having a plurality of gradation patches disposed in a sub-scanning direction; a density detection section that detects densities of the plurality of patch bands; and a control section that performs gradation correction based on detection results from the density detection section. The plurality of patch bands differs from each other.
摘要翻译：提供了一种图像形成装置及其灰度校正方法。图像形成装置包括图像形成部，该图像形成部在图像承载部件上沿主扫描方向的多个位置形成多个贴片束，所述多个贴片束中的每一个具有设置在副图像的多个贴片，扫描方向密度检测部，其检测所述多个贴片带的密度; 以及控制部，其基于来自浓度检测部的检测结果进行灰度校正。多个贴片条彼此不同。

2. 发明授权

US08804194B2 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：US08804194B2
公开(公告)日：2014-08-12
申请号：US13846178
申请日：2013-03-18
申请人： Kazuhiro Saito , Hideaki Tanaka , Katsuyuki Hirata , Takashi Harashima
发明人： Kazuhiro Saito , Hideaki Tanaka , Katsuyuki Hirata , Takashi Harashima
IPC分类号： G06K1/00 , H04N1/60
CPC分类号： G06K15/14 , G03G15/6585 , G03G2215/0081 , H04N1/54
摘要： An image forming apparatus includes an image forming unit, a storage unit, an image processing unit and a control unit. The image processing unit (i) calculates a summed height of a color toner image formed on a sheet by summing up a height of the color toner image on the basis of input image data, (ii) calculates, on the basis of a target value for glossiness stored in the storage unit, a target total height of the color toner image and a clear toner image to realize the target value for glossiness, and (iii) calculates a height of the clear toner image by subtracting the summed height from the target total height. On the basis of the calculated height of the clear toner image, the control unit adjusts the height of the clear toner image formed on the sheet.
摘要翻译：图像形成装置包括图像形成单元，存储单元，图像处理单元和控制单元。图像处理单元（i）基于输入图像数据来计算在片材上形成的彩色调色剂图像的总和高度，并且基于输入图像数据累加彩色调色剂图像的高度，（ii）基于目标值存储在存储单元中的光泽度，彩色调色剂图像的目标总高度和透明调色剂图像以实现光泽度的目标值，以及（iii）通过从目标中减去总和高度来计算清除调色剂图像的高度总高度基于计算出的透明调色剂图像的高度，控制单元调节在片材上形成的透明调色剂图像的高度。

3. 发明授权

US08797600B2 Image forming apparatus and gradation correction method with density unevenness detection 有权
标题翻译：具有密度不均匀检测的图像形成装置和灰度校正方法
公开(公告)号：US08797600B2
公开(公告)日：2014-08-05
申请号：US13455070
申请日：2012-04-24
申请人： Takashi Harashima , Hideaki Tanaka , Katsuyuki Hirata , Toru Yamaguchi , Takaaki Kooriya
发明人： Takashi Harashima , Hideaki Tanaka , Katsuyuki Hirata , Toru Yamaguchi , Takaaki Kooriya
IPC分类号： H04N1/40 , G03G15/00 , H04N1/60
CPC分类号： H04N1/60 , G03G15/5058
摘要： Image forming apparatus (100) creates a toner pattern on intermediate transfer belt (11) as a preprocessing of gradation correction, and calculates a cycle at which density unevenness is largest. Then, a toner image for gradation correction is formed so as to cancel cyclic unevenness at a cycle at which the largest density unevenness occurs. As a result of this, it becomes possible to suppress the deterioration of density detection accuracy and perform a highly accurate gradation correction even if density unevenness of any cycle occurs.
摘要翻译：图像形成装置（100）在中间转印带（11）上形成调色剂图案作为灰度校正的预处理，并计算浓度不均匀度最大的循环。然后，形成用于灰度校正的调色剂图像，以便在发生最大浓度不均匀的循环中消除循环不匀。结果，即使发生任何周期的浓度不均匀，也可以抑制密度检测精度的劣化，并且执行高精度的灰度校正。

4. 发明申请

US20120301163A1 Image Forming Apparatus and Image Forming Method 审中-公开
标题翻译：图像形成装置和图像形成方法
公开(公告)号：US20120301163A1
公开(公告)日：2012-11-29
申请号：US13471354
申请日：2012-05-14
申请人： Katsuyuki Hirata , Hideaki Tanaka , Toru Yamaguchi , Takashi Harashima , Takaaki Kooriya
发明人： Katsuyuki Hirata , Hideaki Tanaka , Toru Yamaguchi , Takashi Harashima , Takaaki Kooriya
IPC分类号： G03G15/00
CPC分类号： G03G15/1605 , G03G15/0131 , G03G15/0189 , G03G15/5058 , G03G15/6585 , G03G2215/00059 , G03G2215/0132
摘要： Provided are an image forming apparatus and an image forming method capable of easily forming an output image having desired gradation characteristics and capable of reducing running cost. In an intermediate transfer-type image forming apparatus, an image forming section is configured by including a first image forming section which forms a color toner image on a photoconductor, and a second image forming section which is located on the upstream side of the first image forming section and forms a transparent toner image on the photoconductor. Further, after the transparent toner image is formed on an intermediate transfer member by the second image forming section, the first image forming section forms, on the basis of image data (correction gradation values) corrected by a gradation correcting section, a color toner image so that the color toner image is superimposed on the transparent toner image.
摘要翻译：提供了能够容易地形成具有期望的灰度特性并能够降低运行成本的输出图像的图像形成装置和图像形成方法。在中间转印型图像形成装置中，图像形成部通过在光电导体上包括形成彩色调色剂图像的第一图像形成部和位于第一图像的上游侧的第二图像形成部并在感光体上形成透明调色剂图像。此外，在通过第二图像形成部分在中间转印部件上形成透明调色剂图像之后，第一图像形成部分基于由灰度校正部分校正的图像数据（校正灰度值）形成彩色调色剂图像使得彩色调色剂图像叠加在透明调色剂图像上。

5. 发明授权

US08233016B2 Image forming apparatus, and exposure control method therefor 有权
标题翻译：图像形成装置及其曝光控制方法
公开(公告)号：US08233016B2
公开(公告)日：2012-07-31
申请号：US11374168
申请日：2006-03-14
申请人： Tetsuya Sakai , Katsuyuki Hirata , Tatsuya Isono , Takashi Harashima , Toshio Tsuboi
发明人： Tetsuya Sakai , Katsuyuki Hirata , Tatsuya Isono , Takashi Harashima , Toshio Tsuboi
IPC分类号： B41J2/385
CPC分类号： B41J2/473
摘要： An image forming apparatus of the invention includes an image carrier, an exposure device performing exposure for forming a toner image on a surface of the image carrier and having at least a first exposure light source and a second exposure light source, a sensor for detecting specified patterns, which are formed on the image carrier at a specified time with use of the first and second exposure light sources, a storing unit for storing a correlation, which is attained from a detection result by the sensor, between the first and second exposure light sources, and a controller for controlling the first and second exposure light sources based on the correlation.
摘要翻译：本发明的图像形成装置包括图像载体，曝光装置，其在图像载体的表面上形成调色剂图像，并具有至少第一曝光光源和第二曝光光源，用于检测指定的图案，其在使用第一和第二曝光光源的指定时间在图像载体上形成;存储单元，用于存储根据传感器的检测结果在第一和第二曝光光之间获得的相关性源和控制器，用于基于相关性来控制第一和第二曝光光源。

6. 发明授权

US07181148B2 Image forming apparatus and device for determining the density and position of a toner pattern 失效
标题翻译：用于确定调色剂图案的浓度和位置的图像形成装置和装置
公开(公告)号：US07181148B2
公开(公告)日：2007-02-20
申请号：US10813076
申请日：2004-03-31
申请人： Tetsuya Sakai , Katsuyuki Hirata , Hironori Akashi , Tatsuya Isono , Takashi Harashima , Masaki Tanaka
发明人： Tetsuya Sakai , Katsuyuki Hirata , Hironori Akashi , Tatsuya Isono , Takashi Harashima , Masaki Tanaka
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/0131 , G03G2215/00059 , G03G2215/00063 , G03G2215/0161 , G03G2215/0164
摘要： A detection device used in an image forming apparatus, comprises a light-emitting element which emits light towards a toner pattern formed on an image carrier, a first light-receiving element which detects the light reflected from the toner pattern and a second light-receiving element which detects the light reflected from the toner pattern in a fashion different from the first light-receiving element. The detection device calculates the amount of toner of the toner pattern based on the output values from the first and second light-receiving elements as well as the position of the toner pattern based on the output value from the first light-receiving element.
摘要翻译：一种用于图像形成装置的检测装置，包括朝向形成在图像载体上的调色剂图案发光的发光元件，检测从调色剂图案反射的光的第一光接收元件和第二受光元件元件，其以不同于第一光接收元件的方式检测从调色剂图案反射的光。检测装置基于来自第一和第二光接收元件的输出值以及基于来自第一光接收元件的输出值的调色剂图案的位置来计算调色剂图案的调色剂量。

7. 发明申请

US20060018674A1 Method and device for estimating toner concentration and image forming apparatus equipped with such device 有权
标题翻译：用于估计调色剂浓度的方法和装置以及配备有这种装置的成像装置
公开(公告)号：US20060018674A1
公开(公告)日：2006-01-26
申请号：US11008605
申请日：2004-12-10
申请人： Katsuyuki Hirata , Tetsuya Sakai , Tatsuya Isono , Hironori Akashi , Toshio Tsuboi , Takashi Harashima , Masaki Tanaka
发明人： Katsuyuki Hirata , Tetsuya Sakai , Tatsuya Isono , Hironori Akashi , Toshio Tsuboi , Takashi Harashima , Masaki Tanaka
IPC分类号： G03G15/08
CPC分类号： G03G15/5058 , G03G15/0849 , G03G2215/00037
摘要： A method and device for estimating toner concentration in a two-component developer consisting of toner and carrier for an electrophotographic image forming apparatus, and an image forming apparatus equipped with such device. The above method and device calculate an amount of toner charge from data detected by a transferred toner amount sensor, compensate the toner charge based on environmental humidity data and cumulative use period data of the image forming apparatus, and estimate toner concentration. The image forming apparatus equipped with the above device exerts control to predict toner consumption from the estimated toner concentration, supply toner to a developing unit according to the predicted toner consumption, and maintain the toner concentration in the developer at predetermined concentration.
摘要翻译：用于估计由用于电子照相图像形成装置的调色剂和载体组成的双组分显影剂中的调色剂浓度的方法和装置，以及配备有这种装置的图像形成装置。上述方法和装置根据由转印调色剂量传感器检测到的数据计算调色剂电荷量，并基于图像形成装置的环境湿度数据和累积使用期间数据补偿调色剂量，并估计调色剂浓度。配备有上述装置的图像形成装置进行控制以根据估计的调色剂浓度预测调色剂消耗，根据预测的调色剂消耗量向显影单元供应调色剂，并将显影剂中的调色剂浓度保持在预定浓度。

8. 发明申请

US20070085893A1 Image forming apparatus, and exposure control method therefor 有权
标题翻译：图像形成装置及其曝光控制方法
公开(公告)号：US20070085893A1
公开(公告)日：2007-04-19
申请号：US11374168
申请日：2006-03-14
申请人： Tetsuya Sakai , Katsuyuki Hirata , Tatsuya Isono , Takashi Harashima , Toshio Tsuboi
发明人： Tetsuya Sakai , Katsuyuki Hirata , Tatsuya Isono , Takashi Harashima , Toshio Tsuboi
IPC分类号： B41J2/385
CPC分类号： B41J2/473
摘要： An image forming apparatus of the invention includes an image carrier, an exposure device performing exposure for forming a toner image on a surface of the image carrier and having at least a first exposure light source and a second exposure light sources a sensor for detecting specified patterns, which are formed on the image carrier at a specified time with use of the first and second exposure light sources, a storing unit for storing a correlation, which is attained from a detection result by the sensor, between the first and second exposure light sources, and a controller for controlling the first and second exposure light sources based on the correlation.
摘要翻译：本发明的图像形成装置包括图像载体，曝光装置，在图像载体的表面上进行用于形成调色剂图像的曝光，并具有至少第一曝光光源和第二曝光光源，用于检测指定图案的传感器，其在使用第一和第二曝光光源的指定时间形成在图像载体上;存储单元，用于存储根据传感器的检测结果在第一和第二曝光光源之间获得的相关性以及控制器，用于基于相关性来控制第一和第二曝光光源。

9. 发明授权

US07149439B2 Method and device for estimating toner concentration and image forming apparatus equipped with such device 有权
公开(公告)号：US07149439B2
公开(公告)日：2006-12-12
申请号：US11008605
申请日：2004-12-10
申请人： Katsuyuki Hirata , Tetsuya Sakai , Tatsuya Isono , Hironori Akashi , Toshio Tsuboi , Takashi Harashima , Masaki Tanaka
发明人： Katsuyuki Hirata , Tetsuya Sakai , Tatsuya Isono , Hironori Akashi , Toshio Tsuboi , Takashi Harashima , Masaki Tanaka
IPC分类号： G03G15/08
CPC分类号： G03G15/5058 , G03G15/0849 , G03G2215/00037
摘要： A method and device for estimating toner concentration in a two-component developer consisting of toner and carrier for an electrophotographic image forming apparatus, and an image forming apparatus equipped with such device. The above method and device calculate an amount of toner charge from data detected by a transferred toner amount sensor, compensate the toner charge based on environmental humidity data and cumulative use period data of the image forming apparatus, and estimate toner concentration. The image forming apparatus equipped with the above device exerts control to predict toner consumption from the estimated toner concentration, supply toner to a developing unit according to the predicted toner consumption, and maintain the toner concentration in the developer at predetermined concentration.

10. 发明授权

US08521045B2 Image forming apparatus and image density correction method therefor 有权
标题翻译：图像形成装置及其图像浓度校正方法
公开(公告)号：US08521045B2
公开(公告)日：2013-08-27
申请号：US13160095
申请日：2011-06-14
申请人： Yasuyuki Inada , Katsuyuki Hirata
发明人： Yasuyuki Inada , Katsuyuki Hirata
IPC分类号： G03G13/00 , G03G13/14
CPC分类号： G03G15/0131 , G03G15/0194 , G03G15/162 , G03G15/5058 , G03G2215/00059 , G03G2215/0132
摘要： An image forming apparatus includes: sensor detecting light intensity and output voltage based on the light intensity; data acquisition part setting reference voltages for the sensor to detect light intensity of bare surface of intermediate transfer member, acquiring, at set reference voltage, voltage output by the sensor on the bare surface as detection data; storage storing the detection data corresponding to the reference voltages; judgment part judging whether to perform image density correction processing; voltage calibration part adjusting output level at light intensity detection; density acquisition part forming toner pattern, and acquiring density data of the toner pattern by causing the sensor having adjusted output level to detect its light intensity; density data correction part reading one piece of detection data referring to output level, and correcting the density data based on the detection data; and image density correction part performing the processing based on the density data.
摘要翻译：图像形成装置包括：基于光强度检测光强度和输出电压的传感器; 数据采集部分设置传感器的参考电压，以检测中间转印部件的裸露表面的光强度，在设定的参考电压下获取传感器在裸露表面上输出的电压作为检测数据; 存储存储对应于参考电压的检测数据; 判断部分判断是否进行图像浓度校正处理; 电压校准部分在光强检测时调节输出电平; 通过使具有调整的输出电平的传感器检测其光强度来获取调色剂图案的浓度数据; 密度数据校正部分参考输出电平读取一条检测数据，并根据检测数据校正密度数据; 以及图像浓度校正部分，基于密度数据执行处理。

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