公开(公告)号：US07515844B2

公开(公告)日：2009-04-07

申请号：US11561053

申请日：2006-11-17

申请人： Kayoko Tanaka ,  Kohta Fujimori ,  Yuji Hirayama ,  Nobutaka Takeuchi ,  Shin Hasegawa ,  Shinji Kato ,  Takashi Enami ,  Kazumi Kobayashi ,  Kiichirou Shimizu

发明人： Kayoko Tanaka ,  Kohta Fujimori ,  Yuji Hirayama ,  Nobutaka Takeuchi ,  Shin Hasegawa ,  Shinji Kato ,  Takashi Enami ,  Kazumi Kobayashi ,  Kiichirou Shimizu

IPC分类号： G03G15/10 ,  G03G15/08

CPC分类号： G03G15/0853 ,  G03G2215/0119 ,  G03G2215/0822

摘要： An image density control method for an image forming apparatus in which, in order to keep the development capability constant over time, the toner density in the developer is manipulated to an appropriate range by changing the toner density control reference value in accordance with the toner replacement amount in a fixed time period by ascertaining changes in the image coverage of the output images, and by changing the image forming conditions at predetermined execution intervals.

摘要翻译： 一种用于图像形成装置的图像浓度控制方法，其中为了保持显影能力恒定，显影剂中的调色剂浓度通过根据调色剂更换改变调色剂浓度控制参考值而被操纵到适当的范围 通过确定输出图像的图像覆盖率的变化，并且通过以预定的执行间隔改变图像形成条件，在固定时间段内量化。

公开(公告)号：US20080031646A1

公开(公告)日：2008-02-07

申请号：US11834354

申请日：2007-08-06

申请人： Hitoshi Ishibashi ,  Kohta Fujimori ,  Shin Hasegawa ,  Yushi Hirayama ,  Nobutaka Takeuchi ,  Shinji Kato ,  Kayoko Tanaka ,  Naoto Watanabe ,  Kentaroh Tomita ,  Satoru Komatsubara ,  Akio Kosuge

发明人： Hitoshi Ishibashi ,  Kohta Fujimori ,  Shin Hasegawa ,  Yushi Hirayama ,  Nobutaka Takeuchi ,  Shinji Kato ,  Kayoko Tanaka ,  Naoto Watanabe ,  Kentaroh Tomita ,  Satoru Komatsubara ,  Akio Kosuge

IPC分类号： G03G15/06

CPC分类号： G03G15/0266 ,  G03G2215/021

摘要： An image forming apparatus includes an image carrier configured to carry an image and a charger to which a direct current voltage overlapped with an AC voltage is applied as a charging bias to charge the image carrier. The charger is positioned in contact or contactlessly with the image carrier. The AC voltage applied to the charger in an adjustment of the AC voltage is not less than twice a charging start voltage Vth at which the image carrier starts to be charged.

摘要翻译： 图像形成装置包括被配置为承载图像的图像载体和与AC电压重叠的直流电压的充电器作为充电偏压以对图像载体充电。 充电器与图像载体接触或非接触地定位。 在AC电压调节中施加到充电器的AC电压不小于图像载体开始充电的充电开始电压Vth的两倍。

公开(公告)号：US20070286617A1

公开(公告)日：2007-12-13

申请号：US11761731

申请日：2007-06-12

申请人： Kayoko Tanaka ,  Shin Hasegawa ,  Kohta Fujimori ,  Nobutaka Takeuchi ,  Yushi Hirayama

发明人： Kayoko Tanaka ,  Shin Hasegawa ,  Kohta Fujimori ,  Nobutaka Takeuchi ,  Yushi Hirayama

IPC分类号： G03G15/08

CPC分类号： G03G15/0853 ,  G03G15/0863 ,  G03G15/0889 ,  G03G2215/0888

摘要： A developing device including a developer bearing member configured to configured to bear thereon a developer including a toner and a magnetic carrier to develop an electrostatic image on an image bearing member with the developer; a developer container configured to contain and feed the developer to the developer bearing member; a toner concentration sensor configured to detect a concentration of the toner in the developer in the developer container and output a signal depending on the detected toner concentration; and a characteristic information storage device configured to store a characteristic of the toner concentration sensor, wherein the sensor information storage device is separated from the toner concentration sensor. A process unit including an image bearing member and the developing device. An image forming apparatus including an image bearing member, the developing device and a controller.

摘要翻译： 一种显影装置，包括：显影剂承载部件，其构造成承载有包含调色剂和磁性载体的显影剂，以使显影剂在图像承载部件上显影静电图像; 显影剂容器，其构造成容纳并将显影剂供给到显影剂承载部件; 调色剂浓度传感器，被配置为检测显影剂容器中的显影剂中的调色剂的浓度，并根据检测到的调色剂浓度输出信号; 以及特征信息存储装置，被配置为存储调色剂浓度传感器的特性，其中传感器信息存储装置与调色剂浓度传感器分离。 一种处理单元，包括图像承载部件和显影装置。 一种图像形成装置，包括图像承载部件，显影装置和控制器。

公开(公告)号：US20070269228A1

公开(公告)日：2007-11-22

申请号：US11748090

申请日：2007-05-14

申请人： Nobutaka Takeuchi ,  Shin Hasegawa ,  Kohta Fujimori ,  Kayoko Tanaka ,  Yushi Hirayama

发明人： Nobutaka Takeuchi ,  Shin Hasegawa ,  Kohta Fujimori ,  Kayoko Tanaka ,  Yushi Hirayama

IPC分类号： G03G15/08

CPC分类号： G03G15/065 ,  G03G15/0131 ,  G03G15/0849 ,  G03G15/0853 ,  G03G15/5058 ,  G03G2215/00059

摘要： An image forming apparatus including a latent image bearing member; a developing device configured to develop a latent image on the image bearing member with a two-component developer; a development potential forming device configured to form a development potential; a toner replenishing device configured to supply the toner to the developing device; a toner concentration detecting device configured to detect and output the concentration of the toner in the developer; a toner concentration controlling device configured to compare the toner concentration output with a toner concentration target to control the toner concentration; an information detecting device configured to obtain information to determine the replacement amount of the toner in the developing device in a predetermined period of time; and a development potential correcting device configured to adjust the development potential on the basis of the information obtained by the information detecting device.

摘要翻译： 一种图像形成装置，包括潜像承载部件; 显影装置，其被配置为利用双组分显影剂在图像承载部件上显影潜像; 配置为形成显影电位的显影电位形成装置; 配置成将调色剂供给到显影装置的调色剂补充装置; 调色剂浓度检测装置，被配置为检测并输出显影剂中调色剂的浓度; 调色剂浓度控制装置，被配置为将调色剂浓度输出与调色剂浓度目标值进行比较，以控制调色剂浓度; 信息检测装置，其被配置为获取信息以在预定时间段内确定显影装置中的调色剂的替换量; 以及显影电位校正装置，被配置为基于由信息检测装置获得的信息来调整显影电位。

公开(公告)号：US20070025748A1

公开(公告)日：2007-02-01

申请号：US11492789

申请日：2006-07-26

申请人： Hitoshi Ishibashi ,  Osamu Ariizumi ,  Shinji Kobayashi ,  Kazumi Kobayashi ,  Fukutoshi Uchida ,  Takashi Enami ,  Ryohta Morimoto ,  Shin Hasegawa ,  Shinji Kato ,  Kohta Fujimori ,  Nobutaka Takeuchi ,  Kayoko Tanaka ,  Yuushi Hirayama ,  Naoto Watanabe

发明人： Hitoshi Ishibashi ,  Osamu Ariizumi ,  Shinji Kobayashi ,  Kazumi Kobayashi ,  Fukutoshi Uchida ,  Takashi Enami ,  Ryohta Morimoto ,  Shin Hasegawa ,  Shinji Kato ,  Kohta Fujimori ,  Nobutaka Takeuchi ,  Kayoko Tanaka ,  Yuushi Hirayama ,  Naoto Watanabe

IPC分类号： G03G15/00

CPC分类号： G03G15/5033 ,  G03G15/5058 ,  G03G2215/00042

摘要： An image forming apparatus includes an image carrying member, an image forming mechanism, an optical sensor, and a controller. The image forming mechanism performs an image forming operation for forming a reference toner image on the image carrying member under a specific setting associated with the image forming mechanism. The optical sensor is arranged in a vicinity to the image carrying member. The controller performs an optical toner test for checking, by using the optical sensor, optical characteristics of the reference toner image formed on the image carrying member and to adjust the specific setting based on a result of the optical toner test.

摘要翻译： 图像形成装置包括图像承载构件，图像形成机构，光学传感器和控制器。 图像形成机构在与图像形成机构相关联的特定设置下，在图像承载部件上执行用于形成基准调色剂图像的图像形成操作。 光学传感器布置在图像承载构件附近。 控制器执行光学调色剂测试，通过使用光学传感器来检查形成在图像承载部件上的参考调色剂图像的光学特性，并且基于光学调色剂测试的结果来调整特定设置。

公开(公告)号：US20070019976A1

公开(公告)日：2007-01-25

申请号：US11477673

申请日：2006-06-30

申请人： Naoto Watanabe ,  Shin Hasegawa ,  Hideki Kamaji ,  Shinji Kato ,  Hitoshi Ishibashi ,  Kohta Fujimori ,  Kayoko Tanaka ,  Yuushi Hirayama ,  Takashi Enami ,  Shinji Kobayashi ,  Kazumi Kobayashi ,  Fukutoshi Uchida ,  Noboru Sawayama

发明人： Naoto Watanabe ,  Shin Hasegawa ,  Hideki Kamaji ,  Shinji Kato ,  Hitoshi Ishibashi ,  Kohta Fujimori ,  Kayoko Tanaka ,  Yuushi Hirayama ,  Takashi Enami ,  Shinji Kobayashi ,  Kazumi Kobayashi ,  Fukutoshi Uchida ,  Noboru Sawayama

IPC分类号： G03G15/00

CPC分类号： G03G15/5058 ,  G03G2215/00042 ,  G03G2215/00059 ,  G03G2215/0119

摘要： An image forming method and apparatus capable of implementing accurately and constantly an improved conversion of the amount of toner adhesion over the entire range of the amount of adhesion. The method includes the steps of computing a normalization value as a relative output ratio of the regular reflection output to a background regular reflection component from the surface extracted from the regular reflection light, in which the regular reflection output is obtained by detecting a plurality of gradation toner patterns with a sensor configured to simultaneously detect regular reflection light and diffuse reflection light; obtaining a diffuse reflection output conversion factor by either (1) subtracting the normalization value multiplied by the diffuse reflection output voltage generated by the surface from the diffuse reflection output voltage, or (2) subtracting the normalization value multiplied by a diffuse reflection output voltage increment, which is computed as the difference between the diffuse reflection output voltage and another diffuse reflection output voltage obtained when a light emitting device is turned off, from the diffuse reflection output voltage increment; and subjecting the relation between the diffuse reflection output conversion factor and the amount of adhesion to a polynomial approximation.

摘要翻译： 一种图像形成方法和装置，其能够在粘合量的整个范围内精确地和持续地实现调色剂粘附量的改进转换。 该方法包括以下步骤：从通过从正反射光提取的表面计算正规反射输出与背景常规反射分量的相对输出比的归一化值，其中通过检测多个等级获得正则反射输出 具有传感器的调色剂图案被配置为同时检测正常反射光和漫反射光; 通过（1）从扩散反射输出电压减去由表面产生的漫反射输出电压的归一化值，或（2）减去乘以漫反射输出电压增量的归一化值，获得漫反射输出转换因子 ，其被计算为漫反射输出电压与发光装置关闭时获得的另一漫反射输出电压之间的差; 并将漫反射输出转换因子与粘附量之间的关系进行多项式近似。

公开(公告)号：US20060024076A1

公开(公告)日：2006-02-02

申请号：US11192045

申请日：2005-07-29

申请人： Shinji Kato ,  Yushi Hirayama ,  Shin Hasegawa ,  Hitoshi Ishibashi ,  Kohta Fujimori ,  Naoto Watanabe ,  Kayoko Tanaka ,  Takashi Enami ,  Shinji Kobayashi ,  Kazumi Kobayashi ,  Fukutoshi Uchida ,  Noboru Sawayama

发明人： Shinji Kato ,  Yushi Hirayama ,  Shin Hasegawa ,  Hitoshi Ishibashi ,  Kohta Fujimori ,  Naoto Watanabe ,  Kayoko Tanaka ,  Takashi Enami ,  Shinji Kobayashi ,  Kazumi Kobayashi ,  Fukutoshi Uchida ,  Noboru Sawayama

IPC分类号： G03G15/00 ,  G03G15/01

CPC分类号： G03G15/0131 ,  G03G15/5058 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/0119

摘要： A device for detecting image information includes an intermediate transfer member configured to hold a pattern image; a detecting unit configured to optically detect the pattern image; a secondary transfer unit configured to contact with and separate from the intermediate transfer member; and a control unit that controls the secondary transfer unit in such a manner that the secondary transfer unit does not contact the intermediate transfer member while the detecting unit is detecting the pattern image, and that controls the secondary transfer unit in such a manner that the secondary transfer unit contacts the intermediate transfer member after the detecting unit finishes detection of the pattern image.

摘要翻译： 一种用于检测图像信息的装置包括被配置为保持图案图像的中间转印部件; 检测单元，被配置为光学地检测所述图案图像; 二次转印单元，被配置为与中间转印元件接触并分离; 以及控制单元，其以所述二次转印单元在所述检测单元检测到所述图案图像时不与所述中间转印部件接触的方式控制所述二次转印单元，并且以这样的方式控制所述二次转印单元， 在检测单元完成图案图像的检测之后，转印单元接触中间转印部件。

公开(公告)号：US09651910B2

公开(公告)日：2017-05-16

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 ,  G03G15/01

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.

公开(公告)号：US09606469B2

公开(公告)日：2017-03-28

申请号：US15155317

申请日：2016-05-16

申请人： Saki Izumi ,  Hiroyuki Sugiyama ,  Shunichi Hashimoto ,  Naoyuki Ozaki ,  Mikio Ishibashi ,  Kayoko Tanaka ,  Kohta Fujimori

发明人： Saki Izumi ,  Hiroyuki Sugiyama ,  Shunichi Hashimoto ,  Naoyuki Ozaki ,  Mikio Ishibashi ,  Kayoko Tanaka ,  Kohta Fujimori

IPC分类号： G03G15/02

CPC分类号： G03G15/0266 ,  G03G15/5058

摘要： An image forming apparatus includes a latent image bearer to rotate, an image forming unit including a charger and a developing device, a charge power supply to output a charging bias applied to a charger, a transfer device, a toner adhesion amount, and a controller. The controller causes the image forming unit to form a background fog pattern in a background area of the latent image bearer while changing a background potential, acquires toner adhesion amount values detected at different positions of the background fog pattern, having different potentials, sorts the toner adhesion amount values in an order of the background potential, determines a relation between the background potential and background fog amount based the toner adhesion amount values except any toner adhesion amount value out of monotonicity, and adjust the charging bias to an optimum value computed based on the determined relation.

公开(公告)号：US20160131991A1

公开(公告)日：2016-05-12

申请号：US14877502

申请日：2015-10-07

申请人： Akira YOSHIDA ,  Kohta Fujimori ,  Kayoko Tanaka ,  Natsumi Matsue ,  Kazufumi Kimura

发明人： Akira YOSHIDA ,  Kohta Fujimori ,  Kayoko Tanaka ,  Natsumi Matsue ,  Kazufumi Kimura

IPC分类号： G03G15/00

CPC分类号： G03G15/0862 ,  G03G15/5058

摘要： An image forming apparatus includes a developer bearer and a toner pattern bearer rotatable in a given direction of rotation to bear an adjustment toner pattern formed with the developer bearer. A toner pattern detector detects an amount of reflection light reflected by the adjustment toner pattern on the toner pattern bearer. A controller performs an adjustment mode to convert the detected amount of reflection light into a toner adhesion amount of toner of the adjustment toner pattern adhered to the toner pattern bearer. The controller forms an adhesion amount suppressing toner image on an upstream region on the toner pattern bearer that is upstream from the adjustment toner pattern in the direction of rotation of the toner pattern bearer. The upstream region is defined by a circumferential length of the developer bearer in the direction of rotation of the toner pattern bearer.

摘要翻译： 图像形成装置包括显影剂载体和可在给定旋转方向上旋转的调色剂图案承载件，以承载与显影剂载体形成的调节调色剂图案。 调色剂图案检测器检测由调色剂图案承载体上的调节调色剂图案反射的反射光量。 控制器执行调整模式以将检测到的反射光量转换成粘附到调色剂图案承载体上的调节调色剂图案的调色剂附着量。 控制器在调色剂图案承载体上的调色剂图案承载体的上游区域上形成粘合量，该调色剂图像在调色剂图案的调色剂图案载体的旋转方向上游。 上游区域由调色剂图案承载体的旋转方向上的显影剂载体的周向长度限定。