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：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：US09348288B2

公开(公告)日：2016-05-24

申请号：US14619387

申请日：2015-02-11

申请人： Satoshi Kaneko ,  Shinji Kato ,  Shuji Hirai ,  Hideo Muroi ,  Terumichi Ochi

发明人： Satoshi Kaneko ,  Shinji Kato ,  Shuji Hirai ,  Hideo Muroi ,  Terumichi Ochi

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

CPC分类号： G03G15/5041 ,  G03G15/043 ,  G03G15/065

摘要： An image forming apparatus includes a latent image bearer, a toner image forming unit, and a transfer device. The toner image forming unit includes a charger, a latent image forming device, and a developing device, and is configured to form a test latent image pattern on a surface of the latent image bearer, and to develop the test latent image pattern into a test toner pattern. The test latent image pattern includes a plurality of test latent image parts partly offset from one another in a main scanning direction. The image forming apparatus also includes a developing current detector and a processor to detect uneven image density in the main scanning direction using the test latent image pattern, based on the developing current detected by the developing current detector, to adjust the uneven image density in the main scanning direction.

摘要翻译： 图像形成装置包括潜像载体，调色剂图像形成单元和转印装置。 调色剂图像形成单元包括充电器，潜像形成装置和显影装置，并且被配置为在潜像承载体的表面上形成测试潜像图案，并将测试潜像图案显影成测试 墨粉图案。 测试潜像图案包括在主扫描方向上彼此部分偏移的多个测试潜像部分。 图像形成装置还包括显影电流检测器和处理器，用于基于由显影电流检测器检测到的显影电流，使用测试潜像图案来检测主扫描方向上的不均匀图像浓度，以调整不均匀图像浓度 主扫描方向。

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：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：US09141059B2

公开(公告)日：2015-09-22

申请号：US14203847

申请日：2014-03-11

申请人： Tetsuya Muto ,  Shuji Hirai ,  Shinichi Akatsu ,  Shingo Suzuki ,  Satoshi Kaneko ,  Keita Gotoh ,  Yuuichiroh Uematsu

发明人： Tetsuya Muto ,  Shuji Hirai ,  Shinichi Akatsu ,  Shingo Suzuki ,  Satoshi Kaneko ,  Keita Gotoh ,  Yuuichiroh Uematsu

IPC分类号： G03G15/00

CPC分类号： G03G15/5058 ,  G03G2215/0116 ,  G03G2215/0129 ,  G03G2215/0141 ,  G03G2215/0161 ,  G03G2215/0164

摘要： An image forming apparatus includes an image carrier, a rotation-position detector, a development device, a transfer unit, a density sensor, and an image-forming-condition determination unit. The density sensor senses a density of a toner image on a transfer body. The image-forming-condition determination unit forms an image pattern, acquires periodical density variation information sensed by the density sensor and detection information of the rotation-position detector, and determines an image forming condition based on the periodical density variation information and the detection information acquired. The image carrier and the transfer body are different in linear velocity in an image formation in which the toner image is transferred to a recording medium. The image carrier and the transfer body are controlled to be equal in linear velocity in an information acquisition in which the image-forming-condition determination unit acquires the periodical density variation information and the detection information.

摘要翻译： 图像形成装置包括图像载体，旋转位置检测器，显影装置，转印单元，密度传感器和图像形成条件确定单元。 密度传感器感测转印体上的调色剂图像的浓度。 图像形成条件确定单元形成图像图案，获取由密度传感器感测的周期密度变化信息和旋转位置检测器的检测信息，并且基于周期密度变化信息和检测信息确定图像形成条件 获得了 在将调色剂图像转印到记录介质的图像形成中，图像载体和转印体的线速度不同。 在图像形成条件确定单元获取周期密度变化信息和检测信息的信息获取中，图像载体和转印体被控制为线性速度相等。

公开(公告)号：US09128402B2

公开(公告)日：2015-09-08

申请号：US14105477

申请日：2013-12-13

申请人： Yuuichiroh Uematsu ,  Shinichi Akatsu ,  Shuji Hirai ,  Shingo Suzuki ,  Tetsuya Muto ,  Satoshi Kaneko ,  Keita Goto

发明人： Yuuichiroh Uematsu ,  Shinichi Akatsu ,  Shuji Hirai ,  Shingo Suzuki ,  Tetsuya Muto ,  Satoshi Kaneko ,  Keita Goto

IPC分类号： G03G15/00 ,  G03G15/01

CPC分类号： G03G15/0189 ,  G03G15/5058 ,  G03G2215/0158

摘要： An image forming apparatus includes an image forming unit including rotary members to form a toner image corresponding to image data, in which the image forming unit forms a toner pattern for detecting image density fluctuation; and an image forming condition determination controller to perform image forming processing to ultimately transfer the toner image onto a recording medium. In the image forming apparatus, the controller measures a periodic image density fluctuation occurring in a rotation cycle of the rotary members based on a detection result of a toner pattern; performs image forming condition determination processing to determine an image forming condition to reduce the image density fluctuation based on measured image density fluctuation data; and determines whether or not the image density fluctuation data measured multiple times satisfies a predetermined control termination condition.

摘要翻译： 图像形成装置包括图像形成单元，该图像形成单元包括旋转构件，以形成与图像数据相对应的调色剂图像，其中图像形成单元形成用于检测图像浓度波动的调色剂图案; 以及图像形成条件确定控制器，以执行图像形成处理，以最终将调色剂图像转印到记录介质上。 在图像形成装置中，控制器基于调色剂图案的检测结果来测量在旋转构件的旋转周期中发生的周期性图像浓度波动; 执行图像形成条件确定处理，以基于测量的图像浓度波动数据确定图像形成条件以减小图像浓度波动; 并且确定多次测量的图像浓度波动数据是否满足预定的控制终止条件。

公开(公告)号：US09727001B2

公开(公告)日：2017-08-08

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 ,  G03G15/00

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.