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    Image forming apparatus and image density control method
    43.
    发明授权
    Image forming apparatus and image density control method 有权
    图像形成装置和图像浓度控制方法

    公开(公告)号：US07929873B2

    公开(公告)日：2011-04-19

    申请号：US12037717

    申请日：2008-02-26

    申请人： Nobutaka Takeuchi ,  Shin Hasegawa ,  Hitoshi Ishibashi ,  Shuji Hirai ,  Kohta Fujimori ,  Kayoko Tanaka ,  Yushi Hirayama ,  Kentaroh Tomita ,  Akira Yoshida ,  Chiemi Hirano

    发明人： Nobutaka Takeuchi ,  Shin Hasegawa ,  Hitoshi Ishibashi ,  Shuji Hirai ,  Kohta Fujimori ,  Kayoko Tanaka ,  Yushi Hirayama ,  Kentaroh Tomita ,  Akira Yoshida ,  Chiemi Hirano

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0853 ,  G03G2215/0634

    摘要： An image forming apparatus includes an image carrier configured to carry an electrostatic latent image, a developing device configured to develop the electrostatic latent image with a two-component developer including toner and magnetic carrier, a toner supplier configured to supply the toner to the developing device, a toner concentration detector configured to detect toner concentration in the two-component developer inside the developing device, and a controller. The controller is configured to detect first information to determine toner replacement amount in the developing device during a predetermined time period and second information to determine a charge characteristic of the toner in the developing device, change a toner concentration control reference value based on the first information and the second information, and control the toner concentration based on an output from the toner concentration detector and the toner concentration control reference value.

    摘要翻译： 图像形成装置包括构造成承载静电潜像的图像载体，构造成用包括调色剂和磁性载体的双组分显影剂显影静电潜像的显影装置，构造成将调色剂供给到显影装置的调色剂供应器 调色剂浓度检测器，被配置为检测显影装置内的双组分显影剂中的调色剂浓度，以及控制器。 控制器被配置为检测第一信息以确定在预定时间段期间显影装置中的调色剂更换量，以及用于确定显影装置中的调色剂的充电特性的第二信息，基于第一信息改变调色剂浓度控制参考值 和第二信息，并且基于调色剂浓度检测器的输出和调色剂浓度控制参考值来控制调色剂浓度。

    IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING IMAGE DENSITY THEREIN
    45.
    发明申请
    IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING IMAGE DENSITY THEREIN 有权
    图像形成装置和控制图像密度的方法

    公开(公告)号：US20100226664A1

    公开(公告)日：2010-09-09

    申请号：US12714790

    申请日：2010-03-01

    申请人： Akira YOSHIDA ,  Nobutaka Takeuchi ,  Shin Hasegawa ,  Yoshiaki Miyashita ,  Kohta Fujimori ,  Kayoko Tanaka

    发明人： Akira YOSHIDA ,  Nobutaka Takeuchi ,  Shin Hasegawa ,  Yoshiaki Miyashita ,  Kohta Fujimori ,  Kayoko Tanaka

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0851 ,  G03G15/0849 ,  G03G15/0853 ,  G03G2215/0607

    摘要： An image forming apparatus includes a developer unit to store two-component developer which includes toner and carrier and develop an electrostatic latent image formed on the image carrier, a toner concentration detector to detect toner concentration in the developer unit, a toner supply unit to supply toner to the developer unit, and a controller to control toner supply amount by controlling the toner supply unit by comparing an output value of the toner concentration detector with a reference value stored in a memory and correcting difference between output values of the toner concentration detector at two or more process linear velocities in accordance with the toner concentration in the developer unit. A compensation amount for correcting difference between output values of the toner concentration detector that differ depending on the process linear velocity is adjustable in accordance with the toner concentration in the development unit.

    摘要翻译： 图像形成装置包括：显影单元，用于存储包括调色剂和载体的双组分显影剂，并显影形成在图像载体上的静电潜像;调色剂浓度检测器，用于检测显影单元中的调色剂浓度;调色剂供应单元， 调色剂到显影剂单元，以及控制器，通过将调色剂浓度检测器的输出值与存储在存储器中的参考值进行比较来控制调色剂供应单元来控制调色剂供应量，并且校正调色剂浓度检测器的输出值之间的差异 根据显影剂单元中的调色剂浓度的两个或多个过程线速度。 用于校正根据处理线速度不同的调色剂浓度检测器的输出值之差的补偿量根据显影单元中的调色剂浓度而调节。

    IMAGE FORMING APPARATUS AND IMAGE QUALITY CORRECTION METHOD USED THEREIN
    46.
    发明申请
    IMAGE FORMING APPARATUS AND IMAGE QUALITY CORRECTION METHOD USED THEREIN 有权
    图像形成装置和图像质量校正方法

    公开(公告)号：US20090263150A1

    公开(公告)日：2009-10-22

    申请号：US12425715

    申请日：2009-04-17

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

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

    IPC分类号： G03G15/00

    CPC分类号： G03G15/0194 ,  G03G15/0136 ,  G03G15/5058 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/0148 ,  G03G2215/0158 ,  G03G2215/0161 ,  G03G2215/0164

    摘要： An image forming apparatus includes multiple image forming units to form different single-color images with respective different color developers and a control system to selectively perform a multicolor image forming operation, a specific-color image forming operation, a multicolor image quality correction operation, and a specific-color image quality correction operation. The control system includes an image formation mode detection unit to ascertain which of the multicolor image forming operation and the specific-color image forming operation is performed prior to a request for image quality correction; and a correction instruction unit to order the multicolor image quality correction operation when the multicolor image quality correction operation is requested, the specific-color correction operation when the specific-color image quality correction operation is requested after the specific-color image forming operation, and the multicolor image quality correction operation when the specific-color image quality correction operation is requested after the multicolor image forming operation.

    摘要翻译： 图像形成装置包括多个图像形成单元，以形成具有各自不同颜色显影剂的不同单色图像;以及控制系统，用于选择性地执行多色图像形成操作，特定彩色图像形成操作，多色图像质量校正操作，以及 特定彩色图像质量校正操作。 控制系统包括图像形成模式检测单元，用于确定在图像质量校正请求之前执行多色图像形成操作和特定彩色图像形成操作中的哪一个; 以及校正指示单元，当要求多色图像质量校正操作时，命令多色图像质量校正操作，在特定彩色图像形成操作之后请求特定颜色图像质量校正操作时的特定颜色校正操作;以及 在多色图像形成操作之后请求特定彩色图像质量校正操作时的多色图像质量校正操作。

    Image forming apparatus and image forming method
    47.
    发明授权
    Image forming apparatus and image forming method 有权
    图像形成装置及图像形成方法

    公开(公告)号：US07668471B2

    公开(公告)日：2010-02-23

    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。

    Developing device, and process unit and image forming apparatus using the developing device
    49.
    发明授权
    Developing device, and process unit and image forming apparatus using the developing device 失效
    显影装置，以及使用显影装置的处理单元和成像装置

    公开(公告)号：US07551862B2

    公开(公告)日：2009-06-23

    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。