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    Image forming apparatus and image density control method
    1.
    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：US08045874B2

    公开(公告)日：2011-10-25

    申请号：US12367736

    申请日：2009-02-09

    申请人： Akira Yoshida ,  Shin Hasegawa ,  Hitoshi Ishibashi ,  Yoshiaki Miyashita ,  Kohta Fujimori ,  Nobutaka Takeuchi ,  Kayoko Tanaka ,  Yushi Hirayama ,  Tetsuya Muto

    发明人： Akira Yoshida ,  Shin Hasegawa ,  Hitoshi Ishibashi ,  Yoshiaki Miyashita ,  Kohta Fujimori ,  Nobutaka Takeuchi ,  Kayoko Tanaka ,  Yushi Hirayama ,  Tetsuya Muto

    IPC分类号： G03G15/00 ,  G03G15/06

    CPC分类号： G03G15/0131 ,  G03G15/5058 ,  G03G2215/00037 ,  G03G2215/00042 ,  G03G2215/00059 ,  G03G2215/00063

    摘要： An image forming apparatus includes a control device that calculates a developing ability of the developing device based on a detection value detected by an optical detection device from the plural toner patches. The control device adjusts an image formation condition based on the calculated developing ability. A factor detection device is provided to detect a contributing factor that causes the developing ability to largely change after the last adjustment of the image formation condition. The control device controls image formation such that when the factor detection device does not detect the contribution factor and a developing ability calculated this time is different from that calculated last time (as to a part of the plural toner patches), the plural toner patches are formed based on a prescribed fixed image formation condition so that an attraction amount of toner attracting to the plural toner patches enter a prescribed range detectable for the optical detection device. The remaining toner patches are formed (based on an image formation condition determined) in accordance with the image formation condition previously adjusted. When the detection device detects the contribution factor, the entire toner patches are formed based on the prescribed fixed condition.

    摘要翻译： 图像形成装置包括控制装置，其基于来自多个调色剂贴片的由光学检测装置检测的检测值来计算显影装置的显影能力。 控制装置基于计算出的显影能力来调整图像形成条件。 提供了一种因素检测装置，用于检测在最后一次调整图像形成条件之后导致显影能力发生很大变化的因素。 控制装置控制图像形成，使得当因子检测装置未检测到贡献因子，并且此次计算的显影能力与上次计算的不同（关于多个调色剂片的一部分）时，多个调色剂片是 基于规定的固定图像形成条件形成，使得吸引到多个调色剂贴片的调色剂的吸引量进入可检测的用于光学检测装置的规定范围。 根据先前调整的图像形成条件形成剩余调色剂片（基于确定的图像形成条件）。 当检测装置检测到贡献因子时，根据规定的固定条件形成整个调色剂贴片。

    IMAGE FORMING APPARATUS AND IMAGE DENSITY CONTROL METHOD
    2.
    发明申请
    IMAGE FORMING APPARATUS AND IMAGE DENSITY CONTROL METHOD 有权
    图像形成装置和图像密度控制方法

    公开(公告)号：US20090202263A1

    公开(公告)日：2009-08-13

    申请号：US12367736

    申请日：2009-02-09

    申请人： Akira YOSHIDA ,  Shin Hasegawa ,  Hitoshi Ishibashi ,  Yoshiaki Miyashita ,  Kohta Fujimori ,  Nobutaka Takeuchi ,  Kayoko Tanaka ,  Yushi Hirayama ,  Tetsuya Muto

    发明人： Akira YOSHIDA ,  Shin Hasegawa ,  Hitoshi Ishibashi ,  Yoshiaki Miyashita ,  Kohta Fujimori ,  Nobutaka Takeuchi ,  Kayoko Tanaka ,  Yushi Hirayama ,  Tetsuya Muto

    IPC分类号： G03G15/00 ,  G03G15/06

    CPC分类号： G03G15/0131 ,  G03G15/5058 ,  G03G2215/00037 ,  G03G2215/00042 ,  G03G2215/00059 ,  G03G2215/00063

    摘要： An image forming apparatus includes a control device that calculates a developing ability of the developing device based on a detection value detected by an optical detection device from the plural toner patches. The control device adjusts an image formation condition based on the calculated developing ability. A factor detection device is provided to detect a contributing factor that causes the developing ability to largely change after the last adjustment of the image formation condition. The control device controls image formation such that when the factor detection device does not detect the contribution factor and a developing ability calculated this time is different from that calculated last time (as to a part of the plural toner patches), the plural toner patches are formed based on a prescribed fixed image formation condition so that an attraction amount of toner attracting to the plural toner patches enter a prescribed range detectable for the optical detection device. The remaining toner patches are formed (based on an image formation condition determined) in accordance with the image formation condition previously adjusted. When the detection device detects the contribution factor, the entire toner patches are formed based on the prescribed fixed condition.

    摘要翻译： 图像形成装置包括控制装置，其基于来自多个调色剂贴片的由光学检测装置检测的检测值来计算显影装置的显影能力。 控制装置基于计算出的显影能力来调整图像形成条件。 提供了一种因素检测装置，用于检测在最后一次调整图像形成条件之后导致显影能力发生很大变化的因素。 控制装置控制图像形成，使得当因子检测装置未检测到贡献因子，并且此次计算的显影能力与上次计算的不同（关于多个调色剂片的一部分）时，多个调色剂片是 基于规定的固定图像形成条件形成，使得吸引到多个调色剂贴片的调色剂的吸引量进入可检测的用于光学检测装置的规定范围。 根据先前调整的图像形成条件形成剩余调色剂片（基于确定的图像形成条件）。 当检测装置检测到贡献因子时，根据规定的固定条件形成整个调色剂贴片。

    IMAGE FORMING APPARATUS AND IMAGE DENSITY CONTROL METHOD
    7.
    发明申请
    IMAGE FORMING APPARATUS AND IMAGE DENSITY CONTROL METHOD 有权
    图像形成装置和图像密度控制方法

    公开(公告)号：US20080205923A1

    公开(公告)日：2008-08-28

    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： G03G15/10

    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 image density control method
    10.
    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。