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公开(公告)号：US20180136593A1
公开(公告)日：2018-05-17
申请号：US15713838
申请日：2017-09-25
CPC分类号： G03G15/1615 , G03G13/14 , G03G15/011 , G03G15/065 , G03G15/5008 , G03G15/5025 , G03G15/5041 , G03G15/5058 , G03G21/1647 , G03G21/1676 , G03G21/203 , G03G2215/00042 , G03G2221/1657
摘要： An image forming apparatus includes an image forming unit and a controller. The image forming unit includes a latent image bearer, a charger to charge the latent image bearer, an exposure device to expose a latent image on the surface of the latent image bearer, and a developing device to develop the latent image with a developer. The controller executes an image forming process, a first fluctuation control that cyclically changes a developing bias supplied to the developing device based on predetermined first pattern data, and a second fluctuation control that cyclically changes a charging bias supplied to the charger based on predetermined second pattern data, in parallel. The controller executes a determination process to determine whether the controller executes the first fluctuation control. When the controller determines not to execute the first fluctuation control, the controller determines not to execute the second fluctuation control, too.
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公开(公告)号：US20190196355A1
公开(公告)日：2019-06-27
申请号：US16227980
申请日：2018-12-20
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.
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公开(公告)号：US20190179246A1
公开(公告)日：2019-06-13
申请号：US16181668
申请日：2018-11-06
摘要： An image forming apparatus includes a latent image bearer, a charger to charge the latent image bearer with a charging bias obtained by superimposing a charge fluctuation voltage to reduce an image density fluctuation on a direct current charging voltage, a writing device to write a latent image on the latent image bearer with writing intensity obtained by superimposing fluctuating writing intensity to reduce an image density fluctuation on constant writing intensity, a developing sleeve to which a developing bias obtained by superimposing a fluctuating developing voltage to reduce an image density fluctuation on a direct current developing voltage is applied to develop the latent image, and circuitry to control the charging bias, the writing intensity, and the developing bias. The circuitry changes the charge fluctuation voltage and the fluctuating developing voltage depending on whether the writing device writes the latent image with the fluctuating writing intensity.
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4.发明申请IMAGE FORMING APPARATUS CAPABLE OF EFFECTIVELY PREVENTING IMAGE DENSITY FLUCTUATION 有权能有效预防图像密度波动的图像形成装置公开(公告)号：US20140169814A1
公开(公告)日：2014-06-19
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
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。
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公开(公告)号：US20140268242A1
公开(公告)日：2014-09-18
申请号：US14202563
申请日：2014-03-10
申请人： Satoshi KANEKO , Shuji HIRAI , Shinichi AKATSU , Shingo SUZUKI , Tetsuya MUTO , Keita GOTOH , Yuuichiroh UEMATSU , Hitoshi ISHIBASHI
发明人： Satoshi KANEKO , Shuji HIRAI , Shinichi AKATSU , Shingo SUZUKI , Tetsuya MUTO , Keita GOTOH , Yuuichiroh UEMATSU , Hitoshi ISHIBASHI
CPC分类号： G06K15/1881 , B41J29/393 , G03G15/0189 , G03G15/5058 , G06K15/027 , G06K15/14 , H04N1/6033
摘要： An image forming apparatus includes an image density detector, an image forming device, a rotator, an image density controller, and a timing correction data obtainer. The image density detector detects a toner density of an image formed on an image bearing member. An image forming device forms the image using a density adjustable element that adjusts the density of the image. The rotator forms an image pattern while the density adjustable element is changed, and a density thereof is detected by the image density detector. The image density controller controls the image forming device using a density correction data for the density adjustable element corresponding to a rotational period of the rotator. The timing correction data obtainer obtains timing correction data for correction of driving timing of the image forming device based on a change in the density of the image pattern detected by the image density detector.
摘要翻译： 图像形成装置包括图像浓度检测器，图像形成装置，旋转器，图像浓度控制器和定时校正数据获取器。 图像浓度检测器检测形成在图像承载部件上的图像的调色剂浓度。 图像形成装置使用调节图像的浓度的浓度可调元件形成图像。 旋转体在密度可调元件改变时形成图像图案，并且其浓度由图像浓度检测器检测。 图像浓度控制器使用与旋转体的旋转周期对应的密度可调元件的浓度校正数据来控制图像形成装置。 定时校正数据获取器基于由图像浓度检测器检测到的图像图案的浓度的变化获得用于校正图像形成装置的驱动定时的定时校正数据。
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公开(公告)号：US20140270828A1
公开(公告)日：2014-09-18
申请号：US14203798
申请日：2014-03-11
申请人： Shingo SUZUKI , Satoshi KANEKO , Tetsuya MUTO , Shuji HIRAI , Shinichi AKATSU , Keita GOTOH , Yuuichiroh UEMATSU
发明人： Shingo SUZUKI , Satoshi KANEKO , Tetsuya MUTO , Shuji HIRAI , Shinichi AKATSU , Keita GOTOH , Yuuichiroh UEMATSU
IPC分类号： G03G15/06
CPC分类号： G03G15/065 , G03G15/5058 , G03G2215/0129 , G03G2215/0164
摘要： An image forming apparatus includes a latent-image bearing body, a charging unit, a latent-image writing unit, a development unit, a development power, and a bias control unit. After a start of an image forming operation, the bias control unit performs a process of constantly maintaining an output of a development bias at an adjustment bias value. The adjustment bias value is a central value in a periodic fluctuation range of the output of the development bias. At a timing at which a difference of the development bias from the adjustment bias value in the periodic fluctuation range is less than or equal to a predetermined threshold value, the bias control unit performs switching from the process of constantly maintaining the output of the development bias at the adjustment bias value to a process of periodically changing the output of the development bias based on development bias control data.
摘要翻译： 图像形成装置包括潜像承载体，充电单元，潜像写入单元，显影单元，显影电力和偏置控制单元。 在图像形成操作开始之后，偏置控制单元执行持续将显影偏压的输出保持在调整偏置值的处理。 调整偏差值是显影偏压输出的周期性波动范围内的中心值。 在显影偏差与周期性波动范围内的调整偏置值的差小于或等于预定阈值的定时，偏置控制单元从持续保持显影偏压的输出的处理进行切换 将调整偏差值设定为基于显影偏压控制数据周期性地改变显影偏压的输出的过程。
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公开(公告)号：US20200376842A1
公开(公告)日：2020-12-03
申请号：US16869914
申请日：2020-05-08
申请人： Yuuichiroh UEMATSU , Ryohki WAKASA , Atsushi MORI
发明人： Yuuichiroh UEMATSU , Ryohki WAKASA , Atsushi MORI
摘要： A liquid circulation device includes a circulation passage, a liquid feeding device, a pressure sensor, and control circuitry. Through the circulation passage, liquid circulates to be supplied to and collected from a circulatory liquid discharge head. The liquid feeding device is configured to circulate the liquid through the circulation passage. The pressure sensor is configured to detect a pressure of the circulation passage. The control circuitry configured to acquire a characteristic indicating a relationship among a drive amount of the liquid feeding device, discharge information of the liquid discharged from the liquid discharge head, and a pressure detection value of the circulation passage; and change, based on the characteristic acquired, at least one of a control parameter and a calculation expression used to control the liquid feeding device.
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公开(公告)号：US20160378040A1
公开(公告)日：2016-12-29
申请号：US15190685
申请日：2016-06-23
申请人： Akio KOSUGE , Natsumi MATSUE , Keiko MATSUMOTO , Akira YOSHIDA , Yoichi SAKURAI , Yuuichiroh UEMATSU , Kohta FUJIMORI , Kayoko TANAKA
发明人： Akio KOSUGE , Natsumi MATSUE , Keiko MATSUMOTO , Akira YOSHIDA , Yoichi SAKURAI , Yuuichiroh UEMATSU , Kohta FUJIMORI , Kayoko TANAKA
IPC分类号： G03G15/00
CPC分类号： G03G15/556 , G03G15/01 , G03G15/5058
摘要： An image forming apparatus includes an image bearer, an image forming device to form a toner image on the image bearer, a transfer device to transfer the toner image to a recording medium, a line sensor as an image density sensor to detect image density of the toner image, and a controller operatively connected to the image density sensor. The image density sensor is disposed so as to be shorter in a rotational direction of the image bearer than in a width direction of the image bearer perpendicular to the rotational direction of the image bearer. The controller forms a shading pattern image including a plurality of patches on the image bearer, and detects image density of the plurality of patches, so as to control image density. The shading pattern image is shorter in the rotational direction of the image bearer than in the width direction of the image bearer.
摘要翻译： 图像形成装置包括图像载体，图像形成装置，用于在图像载体上形成调色剂图像，将调色剂图像转印到记录介质的转印装置，作为图像浓度传感器的线传感器，以检测图像密度 调色剂图像和可操作地连接到图像浓度传感器的控制器。 图像浓度传感器被设置为在图像承载体的旋转方向上比垂直于图像承载体的旋转方向的图像载体的宽度方向更短。 控制器在图像载体上形成包括多个斑块的阴影图案图像，并且检测多个斑块的图像浓度，以便控制图像浓度。 阴影图案图像在图像承载的旋转方向上比在图像承载的宽度方向上更短。
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公开(公告)号：US20170108808A1
公开(公告)日：2017-04-20
申请号：US15274366
申请日：2016-09-23
申请人： Natsumi MATSUE , Akira YOSHIDA , Akio KOSUGE , Yoichi SAKURAI , Yuuichiroh UEMATSU , Keiko MATSUMOTO
发明人： Natsumi MATSUE , Akira YOSHIDA , Akio KOSUGE , Yoichi SAKURAI , Yuuichiroh UEMATSU , Keiko MATSUMOTO
IPC分类号： G03G15/00
CPC分类号： G03G15/5041 , G03G15/5058
摘要： An image forming apparatus includes a rotatable image bearer, a toner image forming device, an image reader, and a control unit. The toner image forming device forms a test toner image on the image bearer. The image reader reads the test toner image and a predetermined reference member. The control unit calculates an amount of toner contained in the test toner image based on image data from the test toner image. Based on image data from the reference member, the control unit selects a position of a pixel to be used for calculation of the amount of toner contained in the test toner image from pixels included in the image data from the reference member, to calculate the amount of toner contained in the test toner image from data of a pixel located at the position thus selected among pixels included in the image data from the test toner image.
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公开(公告)号：US20220126594A1
公开(公告)日：2022-04-28
申请号：US17570497
申请日：2022-01-07
申请人： Yuuichiroh UEMATSU , Ryohki WAKASA , Atsushi MORI
发明人： Yuuichiroh UEMATSU , Ryohki WAKASA , Atsushi MORI
摘要： A liquid circulation device includes a circulation passage, a liquid feeding device, a pressure sensor, and control circuitry. Through the circulation passage, liquid circulates to be supplied to and collected from a circulatory liquid discharge head. The liquid feeding device is configured to circulate the liquid through the circulation passage. The pressure sensor is configured to detect a pressure of the circulation passage. The control circuitry configured to acquire a characteristic indicating a relationship among a drive amount of the liquid feeding device, discharge information of the liquid discharged from the liquid discharge head, and a pressure detection value of the circulation passage; and change, based on the characteristic acquired, at least one of a control parameter and a calculation expression used to control the liquid feeding device.
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