公开(公告)号：US20070258723A1

公开(公告)日：2007-11-08

申请号：US11797359

申请日：2007-05-02

申请人： Yasushi Nakazato ,  Shintaroh Takahashi ,  Takenori Oku ,  Jun Yamane ,  Osamu Satoh ,  Hitoshi Shimizu ,  Shuji Hirai ,  Masahide Yamashita

发明人： Yasushi Nakazato ,  Shintaroh Takahashi ,  Takenori Oku ,  Jun Yamane ,  Osamu Satoh ,  Hitoshi Shimizu ,  Shuji Hirai ,  Masahide Yamashita

IPC分类号： G03G15/00

CPC分类号： G03G15/55

摘要： An image forming apparatus effectively reduces its maintenance cost and prevents a failure of the image forming apparatus in a period of busy use by the user, which includes a failure prediction distinction device configured to predict a failure based on an internal state signal, a maintenance time determination device configured to determine a time when maintenance is needed based on the internal state signal, and a maintenance need distinction device configured to distinguish whether or not maintenance is needed based on a result from the failure prediction distinction device at the maintenance time determined by the maintenance time determination device.

摘要翻译： 图像形成装置有效地降低其维护成本，并且防止在用户忙碌使用期间图像形成装置的故障，其包括被配置为基于内部状态信号来预测故障的故障预测区分装置，维护时间 确定装置，被配置为基于所述内部状态信号来确定需要维护的时间;以及维护需要区分装置，被配置为基于由所述故障预测区分装置在由所述内部状态信号确定的维护时间的故障预测区分装置的结果来区分是否需要维护 维护时间确定装置。

公开(公告)号：US10474056B2

公开(公告)日：2019-11-12

申请号：US16227980

申请日：2018-12-20

申请人： Yuuichiroh Uematsu ,  Satoshi Kaneko ,  Terumichi Ochi ,  Shuji Hirai

发明人： Yuuichiroh Uematsu ,  Satoshi Kaneko ,  Terumichi Ochi ,  Shuji Hirai

IPC分类号： G03G15/04 ,  G03G15/043 ,  G03G15/00

摘要： An image forming apparatus includes a latent image bearer; a writing device configured to write a latent image onto the latent image bearer; a detection device configured to detect, at a plurality of positions, a density of a toner image obtained through development of the latent image; and a controller configured to correct a writing intensity of the writing device to correct an uneven density based on detection values of the detection device. The controller determines whether each of the detection values is pass or fail. In response to a determination that a detection value is fail, the controller corrects the wiring intensity based on another detection value determined to be pass at a position different from a position at which the detection value is determined to be fail, instead of correcting the writing intensity based on the detection value determined to be fail.

公开(公告)号：US09996037B2

公开(公告)日：2018-06-12

申请号：US15447696

申请日：2017-03-02

申请人： Satoshi Kaneko ,  Terumichi Ochi ,  Shuji Hirai

发明人： Satoshi Kaneko ,  Terumichi Ochi ,  Shuji Hirai

IPC分类号： G03G15/00

CPC分类号： G03G15/5025 ,  G03G15/1605 ,  G03G15/5058 ,  G03G2215/0129 ,  G03G2215/0164

摘要： An image forming apparatus includes an image forming device, an image density detector, and an output change device configured to cause the image forming device to form a test toner image while cyclically changing a charging power based on a charging change pattern and a developing bias based on a developing change pattern, generate an image density fluctuation pattern of the test toner image in a rotation direction of a latent image bearer, generate a writing change pattern to cyclically change a power of latent image writing based on the image density fluctuation pattern of the test toner image and one of the charging change pattern and a correlative pattern correlated with the charging change pattern. The output change device is configured to cyclically change the power of latent image writing based on the writing change pattern during image formation according to a user command.

公开(公告)号：US09778593B2

公开(公告)日：2017-10-03

申请号：US14971106

申请日：2015-12-16

申请人： Shuji Hirai ,  Satoshi Kaneko ,  Terumichi Ochi

发明人： Shuji Hirai ,  Satoshi Kaneko ,  Terumichi Ochi

IPC分类号： G03G15/06 ,  G03G15/02 ,  G03G15/043

CPC分类号： G03G15/065 ,  G03G15/0266 ,  G03G15/043

摘要： An image forming apparatus includes an image forming section that includes a latent image bearer; a charger to charge a surface of the latent image bearer; and a latent image writer to write a latent image on the charged surface of the latent image bearer. The image forming apparatus further includes a developing device to develop the latent image with a developer borne on a developer bearer; and a cyclical changing device including a controller and a write controller, in combination. The cyclical changing device cyclically changes a developing bias to be applied to the developer bearer while cyclically changing a charge intensity of the charger during the image formation by the image forming section. The cyclical changing device cyclically changes the developing bias and the charge intensity, and a latent image write intensity of the latent image writer.

公开(公告)号：US20160299452A1

公开(公告)日：2016-10-13

申请号：US15090252

申请日：2016-04-04

申请人： Satoshi Kaneko ,  Shuji Hirai ,  Terumichi Ochi

发明人： Satoshi Kaneko ,  Shuji Hirai ,  Terumichi Ochi

IPC分类号： G03G15/02

CPC分类号： G03G15/0266 ,  G03G15/5037

摘要： An image forming apparatus includes an image forming device, an electric current detector, and a controller. The image forming device includes a latent image bearer, a charging rotator, a charging power supply, a latent image writing unit, and a developing unit. The controller (i) determines an uneven electric resistance of the charging rotator in a direction of rotation of the charging rotator, based on a detection result by the electric current detector, (ii) perform, at a predetermined timing, data construction processing to construct change pattern data to change an output value of a voltage from the charging power supply according to a predetermined pattern, based on the uneven electric resistance, and (iii) perform, in a print job to form a toner image in response to an instruction, voltage changing processing to charge the latent image bearer while changing the output value of the voltage, based on the change pattern data.

摘要翻译： 图像形成装置包括图像形成装置，电流检测器和控制器。 图像形成装置包括潜像载体，充电旋转器，充电电源，潜像写入单元和显影单元。 控制器（i）基于电流检测器的检测结果，确定充电旋转器在旋转方向上的不均匀电阻，（ii）在预定定时执行数据构造处理以构造 根据不均匀的电阻来改变图案数据以根据预定图案从充电电源改变电压的输出值，以及（iii）在打印作业中执行响应于指令形成调色剂图像， 电压变化处理，基于变化图案数据，在改变电压的输出值的同时对潜像承载进行充电。

公开(公告)号：US08818244B2

公开(公告)日：2014-08-26

申请号：US13453286

申请日：2012-04-23

申请人： Yushi Hirayama ,  Hitoshi Ishibashi ,  Shuji Hirai ,  Satoshi Kaneko ,  Hideo Muroi

发明人： Yushi Hirayama ,  Hitoshi Ishibashi ,  Shuji Hirai ,  Satoshi Kaneko ,  Hideo Muroi

IPC分类号： G03G15/08

CPC分类号： G03G15/0848 ,  G03G15/0889 ,  G03G15/0893

摘要： A developing device for developing an electrostatic latent image on an image bearing member including a developer bearing member opposed to the image bearing member to bear thereon a developer including a toner and a magnetic carrier; a developer containing part to contain the developer to supply the developer to the developer bearing member; an agitating or feeding member to agitate or feed the developer in the developer containing part; a magnetic permeability sensor to measure magnetic permeability of the developer to determine toner concentration of the developer; a developer feeder; a feeding member to feed the developer to the developer containing part through the developer feeder; and a driver to drive the feeding member independently of the agitating or feeding member. The magnetic permeability sensor is arranged on the developer feeder.

摘要翻译： 一种显影装置，用于在包括与图像承载部件相对的显影剂承载部件的图像承载部件上显影静电潜像，以承载包括调色剂和磁性载体的显影剂; 显影剂容纳部分，用于容纳显影剂以将显影剂供应到显影剂承载构件; 搅拌或进料构件以搅拌或供给显影剂容纳部分中的显影剂; 用于测量显影剂的磁导率以确定显影剂的调色剂浓度的磁导率传感器; 显影剂供料器 供给构件，用于通过显影剂供给器将显影剂供给到显影剂容纳部分; 以及独立于搅拌或进给构件驱动进给构件的驱动器。 磁导率传感器设置在显影剂供给器上。

公开(公告)号：US20190196355A1

公开(公告)日：2019-06-27

申请号：US16227980

申请日：2018-12-20

申请人： Yuuichiroh UEMATSU ,  Satoshi Kaneko ,  Terumichi Ochi ,  Shuji Hirai

发明人： Yuuichiroh UEMATSU ,  Satoshi Kaneko ,  Terumichi Ochi ,  Shuji Hirai

IPC分类号： G03G15/043 ,  G03G15/04

CPC分类号： G03G15/043 ,  G03G15/04072 ,  G03G15/5058 ,  G03G2215/00033 ,  G03G2215/00037

摘要： An image forming apparatus includes a latent image bearer; a writing device configured to write a latent image onto the latent image bearer; a detection device configured to detect, at a plurality of positions, a density of a toner image obtained through development of the latent image; and a controller configured to correct a writing intensity of the writing device to correct an uneven density based on detection values of the detection device. The controller determines whether each of the detection values is pass or fail. In response to a determination that a detection value is fail, the controller corrects the wiring intensity based on another detection value determined to be pass at a position different from a position at which the detection value is determined to be fail, instead of correcting the writing intensity based on the detection value determined to be fail.

公开(公告)号：US09671716B2

公开(公告)日：2017-06-06

申请号：US15009990

申请日：2016-01-29

申请人： Naoto Watanabe ,  Shuji Hirai ,  Satoshi Kaneko ,  Terumichi Ochi ,  Muneaki Iwata

发明人： Naoto Watanabe ,  Shuji Hirai ,  Satoshi Kaneko ,  Terumichi Ochi ,  Muneaki Iwata

IPC分类号： G03G15/00 ,  G03G15/043 ,  H04N1/04 ,  H04N1/06

CPC分类号： G03G15/043 ,  H04N1/0283 ,  H04N1/04 ,  H04N1/06 ,  H04N1/113 ,  H04N2201/04755

摘要： An image forming apparatus includes: a latent image forming unit that forms a latent image on a latent image bearer with light from a light source; and a correction data generating unit that includes: an acquiring unit that acquires, for each position, a correction value of an intensity of the light source to equalize a density distribution of a latent image; a quantizing unit that generates a correction data for each position by quantizing a correction value for each position; and an excessive correction suppressing unit that outputs the correction data after reducing an amount of change from an immediately preceding latent image formation position, with respect to a position at which an absolute value of a restored value indicating a correction amount and generated based on the correction data exceeds an absolute value of the correction value.

公开(公告)号：US08760724B2

公开(公告)日：2014-06-24

申请号：US12875718

申请日：2010-09-03

申请人： Satoshi Kaneko ,  Shuji Hirai

发明人： Satoshi Kaneko ,  Shuji Hirai

IPC分类号： H04N1/40 ,  G06K15/00 ,  G03G15/00

CPC分类号： H04N1/4078 ,  H04N1/40006 ,  H04N1/405

摘要： There is provided an image forming apparatus that performs gradation correction, including a pattern forming unit that forms, on an image carrier, rows of area coverage modulation patterns having patterns of different gradation values in steps by area coverage modulation method; a toner adhering amount detecting unit that measures toner adhering amount of each pattern of the rows of area coverage modulation patterns formed by the pattern forming unit, the gradation correction being performed based on a detection result of the toner adhering amount detecting unit; and a pattern type selecting unit that selects a single pattern type formed on the image carrier from a plurality of pattern types, when carrying out gradation correction control by forming the rows of the area coverage modulation.

摘要翻译： 提供了一种执行灰度校正的图像形成装置，包括：图像形成单元，其在图像载体上形成具有逐层覆盖调制方法的具有不同灰度值的图案的区域覆盖调制图案行; 调色剂粘附量检测单元，其测量由图案形成单元形成的区域覆盖调制图案的行的每个图案的调色剂附着量，基于调色剂粘附量检测单元的检测结果进行灰度校正; 以及图案类型选择单元，当通过形成区域覆盖调制的行来执行灰度校正控制时，从多个图案类型中选择形成在图像载体上的单个图案类型。

公开(公告)号：US09857747B2

公开(公告)日：2018-01-02

申请号：US14924826

申请日：2015-10-28

申请人： Satoshi Kaneko ,  Shuji Hirai

发明人： Satoshi Kaneko ,  Shuji Hirai

IPC分类号： G03G15/00 ,  G03G15/06 ,  G03G15/16

CPC分类号： G03G15/556 ,  G03G15/065 ,  G03G15/1675 ,  G03G15/5058

摘要： An image forming apparatus that includes an imaging device, a transferrer, a rotator, a rotation position sensor, an adhesion amount sensor, a power supply, and a controller. The controller executes a construction process to construct output pattern data to change a voltage output from the power supply, according to a result obtained by detecting a toner adhesion amount of a toner image for density unevenness detection and a detection result from the rotation position sensor obtained when the toner image is formed, and an output change process to execute a predetermined process while changing the voltage according to the detection result and the output pattern data. The controller executes a determination process to determine propriety of an output range of the voltage output from the power supply by the output change process and a data process for a shift to shift the range when a determination result is inappropriate.