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

IPC分类号： G06K15/02 ,  G06K15/14

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。

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。

公开(公告)号：US20160112580A1

公开(公告)日：2016-04-21

申请号：US14879177

申请日：2015-10-09

申请人： Tetsuya MUTO ,  Shinichi AKATSU ,  Akira YOSHIDA ,  Keita GOTOH ,  Yuuichiroh UEMATSU

发明人： Tetsuya MUTO ,  Shinichi AKATSU ,  Akira YOSHIDA ,  Keita GOTOH ,  Yuuichiroh UEMATSU

IPC分类号： H04N1/00 ,  G03G15/01 ,  H04N1/60

CPC分类号： H04N1/00023 ,  G03G15/0121 ,  G03G15/5058 ,  H04N1/00037 ,  H04N1/60 ,  H04N1/6044 ,  H04N2201/0094

摘要： An image forming apparatus includes an image bearer to bear a black toner pattern formed with a black toner image under an increased exposure amount and an increased developing bias. A first optical sensor detects an amount of reflection light reflected by the black toner pattern on the image bearer. The first optical sensor includes a light-emitting element to emit light toward the black toner pattern on the image bearer and a light-receiving element to receive the reflection light reflected by the black toner pattern on the image bearer. A toner adhesion amount converter converts the amount of the reflection light detected by the first optical sensor into a toner adhesion amount of toner adhered to the image bearer and adjusts an image density according to the toner adhesion amount.

摘要翻译： 图像形成装置包括承载黑色调色剂图案的图像承载件，所述黑色调色剂图案在增加的曝光量和增加的显影偏压下由黑色调色剂图像形成。 第一光学传感器检测由图像载体上的黑色调色剂图案反射的反射光量。 第一光学传感器包括朝向图像承载体上的黑色调色剂图案发光的发光元件和用于接收由图像载体上的黑色调色剂图案反射的反射光的光接收元件。 调色剂粘附量转换器将由第一光学传感器检测到的反射光的量转换成粘附到图像承载体的调色剂附着量，并根据调色剂附着量来调整图像浓度。

公开(公告)号：US20170315471A1

公开(公告)日：2017-11-02

申请号：US15477576

申请日：2017-04-03

申请人： Kazuaki KAMIHARA ,  Yuuichiroh UEMATSU ,  Tetsuya MUTO ,  Tomohide TAKENAKA ,  Keita SONE ,  Keita GOTOH ,  Masahiko SHAKUTO ,  Takamasa OZEKI ,  Mutsuki MORINAGA ,  Hitoshi YAMAMOTO ,  Keiko KAJIMURA

发明人： Kazuaki KAMIHARA ,  Yuuichiroh UEMATSU ,  Tetsuya MUTO ,  Tomohide TAKENAKA ,  Keita SONE ,  Keita GOTOH ,  Masahiko SHAKUTO ,  Takamasa OZEKI ,  Mutsuki MORINAGA ,  Hitoshi YAMAMOTO ,  Keiko KAJIMURA

IPC分类号： G03G15/08

CPC分类号： G03G15/0855 ,  G03G15/0131 ,  G03G15/0189 ,  G03G15/0806 ,  G03G15/0856 ,  G03G15/0865 ,  G03G15/5058 ,  G03G15/556

摘要： An image forming apparatus includes an image bearer, a toner image forming device, a plurality of image density detectors, and a controller. The plurality of image density detectors are disposed at predetermined intervals opposite the image bearer in a width direction of the image bearer. The controller causes the toner image forming device to form toner image patterns having an identical density at the plurality of positions on the image bearer and the plurality of image density detectors detects a density of the toner image patterns. Based on the detected density of the toner image patterns, the controller identifies multiple cyclic fluctuations of the density of the toner image patterns and adjusts an image forming condition based on the multiple cyclic fluctuations of the density of the toner image patterns to decrease an amplitude caused by the multiple cyclic fluctuations of the density of the toner image patterns.

公开(公告)号：US20150125168A1

公开(公告)日：2015-05-07

申请号：US14517286

申请日：2014-10-17

申请人： Keita GOTOH ,  Akira YOSHIDA

发明人： Keita GOTOH ,  Akira YOSHIDA

IPC分类号： G03G15/00 ,  G03G15/043 ,  G03G15/02

CPC分类号： G03G15/0266 ,  G03G15/043 ,  G03G15/5033 ,  G03G15/5041 ,  G03G15/5058

摘要： An image forming apparatus includes an image bearer; a charger to charge the image bearer; an electrostatic latent image former to form an electrostatic latent image on the image bearer; an image developer to develop the electrostatic latent image with a toner to form a visual toner image; a transferer to transfer the toner image on a transfer material; a toner concentration calculator to calculate a concentration of the toner; and an optical detector. At least a toner patch image is formed on the image bearer with an irradiation quantity set such that an irradiated part potential is larger than a developing condition, the toner patch image is read by the optical detector, and the charging condition is corrected on the basis of a difference between a toner concentration of the toner patch image and a target toner concentration.

摘要翻译： 图像形成装置包括图像载体; 用于对图像承载进行充电的充电器; 静电潜像形成装置，用于在图像载体上形成静电潜像; 图像显影剂，用调色剂显影静电潜像以形成视觉调色剂图像; 转印器，用于将转印材料上的调色剂图像转印; 调色剂浓度计算器，用于计算调色剂的浓度; 和光学检测器。 在图像载体上形成至少一个调色剂图像，其中照射量被设定为使得照射部分电位大于显影条件，调色剂贴片图像被光学检测器读取，并且充电条件基于 调色剂图像的调色剂浓度与目标调色剂浓度之间的差异。