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    Electrophotographic reproduction apparatus controllable toner density and method thereof for controlling an electrophotographic reproduction process
    1.
    发明授权
    Electrophotographic reproduction apparatus controllable toner density and method thereof for controlling an electrophotographic reproduction process 失效
    电子照相再现装置可调色剂浓度及其控制电子照相再现过程的方法

    公开(公告)号：US5402209A

    公开(公告)日：1995-03-28

    申请号：US102344

    申请日：1993-08-05

    申请人： Motoyuki Itoyama ,  Mitsuru Tokuyama ,  Toshiaki Ino ,  Kunio Ohashi

    发明人： Motoyuki Itoyama ,  Mitsuru Tokuyama ,  Toshiaki Ino ,  Kunio Ohashi

    IPC分类号： G01N21/47 ,  G03G15/00 ,  G03G15/04 ,  G03G15/043 ,  G03G15/06 ,  G03G15/08 ,  G03G21/00

    CPC分类号： G03G15/0822 ,  G03G15/5037 ,  G03G2215/00042

    摘要： An apparatus includes a system controller which calculates a ratio of a first signal to a second signal and adjusts a control parameter of an electrophotographic reproduction process so that the density of fog indicated by the ratio is within a predetermined range. A first optical sensor outputs the first signal by detecting a reflectance of a non-image area on the photoreceptor between a developing unit and a transfer charger. A second optical sensor outputs the second signal by detecting a reflectance of a surface of the photoreceptor between a cleaning unit and a charger. The system controller controls developer including toner and carrier to be agitated when the ratio obtained after adjusting the control parameter is still outside the predetermined range. Since the density of fog is detected with accuracy by calculating the ratio, copy quality is stabilized even when temperature changes. Moreover, even if the ratio is outside the predetermined range as a result of the supply of toner which has deteriorated due to a heat history, the deterioration of toner is restored by agitating the developer. It is thus possible to prevent copy quality from being degraded.

    摘要翻译： 一种装置包括：系统控制器，其计算第一信号与第二信号的比率，并调整电子照相再现处理的控制参数，使得由比率指示的雾度浓度在预定范围内。 第一光学传感器通过检测显影单元和转印充电器之间的感光体上的非图像区域的反射率来输出第一信号。 第二光学传感器通过检测清洁单元和充电器之间的感光体的表面的反射率来输出第二信号。 当调整控制参数后获得的比例仍然在预定范围之外时，系统控制器控制显影剂，包括调色剂和载体被搅拌。 由于通过计算比例来精确地检测雾的浓度，即使温度变化，复印质量也被稳定。 此外，由于由于热历史而劣化的调色剂的供给，即使该比例在预定范围之外，也可以通过搅拌显影剂来恢复调色剂的劣化。 因此，可以防止复制品质恶化。

    Electrophotographic image stabilization control apparatus
    2.
    发明授权
    Electrophotographic image stabilization control apparatus 失效
    电子照相图像稳定控制装置

    公开(公告)号：US5532794A

    公开(公告)日：1996-07-02

    申请号：US175636

    申请日：1993-12-30

    申请人： Mitsuru Tokuyama ,  Toshiaki Ino ,  Motoyuki Itoyama ,  Kunio Ohashi ,  Haruo Nishiyama

    发明人： Mitsuru Tokuyama ,  Toshiaki Ino ,  Motoyuki Itoyama ,  Kunio Ohashi ,  Haruo Nishiyama

    IPC分类号： G03G15/00 ,  G03G15/047 ,  G03G21/00

    CPC分类号： G03G15/5041 ,  G03G15/047 ,  G03G2215/00042 ,  G03G2215/00084 ,  G03G2215/0448

    摘要： A process control apparatus of electrophotographic apparatus has an optical sensor for optically detecting the density of toner patches formed on a photoreceptor drum. The present apparatus is further provided with a control device for controlling lamps for the copying process, chargers and other elements. A toner patch is formed on the photoreceptor so as to be located between every two toner images for a copying operation. The control device controls the lamps, chargers and other elements in accordance with the result of the toner patches detected by the optical sensor so as to stabilize the copying picture quality. With the arrangement, it is avoided that the job efficiency during the copying operation deteriorates, and the control data obtained from the toner patches is soon used for the toner image formation for the copying operation, thereby ensuring that the process control improves in accuracy.

    摘要翻译： 电子照相设备的过程控制装置具有光学传感器，用于光学检测在感光鼓上形成的调色剂色调的浓度。 本装置还设置有用于控制复印处理的灯的控制装置，充电器和其它元件。 在感光体上形成调色剂贴片，以便位于每两个调色剂图像之间进行复印操作。 控制装置根据由光学传感器检测到的调色剂贴片的结果控制灯，充电器和其它元件，以稳定复印图像质量。 通过这种布置，避免了复制操作期间的作业效率劣化，并且从调色剂块获得的控制数据很快用于复印操作的调色剂图像形成，从而确保了处理控制的精度提高。

    Toner density control for an image forming apparatus
    3.
    发明授权
    Toner density control for an image forming apparatus 失效
    图像形成装置的调色剂浓度控制

    公开(公告)号：US5839018A

    公开(公告)日：1998-11-17

    申请号：US625997

    申请日：1996-04-01

    申请人： Masato Asanuma ,  Toshiaki Ino ,  Kanshiro Okamoto ,  Hideji Saiko ,  Toshihisa Ishida ,  Katsuaki Sumida ,  Motoyuki Itoyama ,  Hiroo Naoi ,  Mitsuru Tokuyama ,  Eisaku Hatanaka ,  Yuichiro Takesue ,  Jitsuo Masuda ,  Masayasu Narimatsu ,  Yasuo Kitabatake

    发明人： Masato Asanuma ,  Toshiaki Ino ,  Kanshiro Okamoto ,  Hideji Saiko ,  Toshihisa Ishida ,  Katsuaki Sumida ,  Motoyuki Itoyama ,  Hiroo Naoi ,  Mitsuru Tokuyama ,  Eisaku Hatanaka ,  Yuichiro Takesue ,  Jitsuo Masuda ,  Masayasu Narimatsu ,  Yasuo Kitabatake

    IPC分类号： G03G15/00 ,  G03G15/08

    CPC分类号： G03G15/0849 ,  G03G15/0853 ,  G03G15/5041 ,  G03G2215/00042

    摘要： The image forming apparatus of the invention controls the toner density by any one of the following configurations: by correcting the toner density of the developer in association with the agitation total; by controlling a process parameter so that the density of a toner patch formed on the photoreceptor corresponds to a prescribed density value and determining that developing performance of the developer is improved and canceling the toner density correction when the process parameter reaches the prescribed value; by changing the toner density reference value when the variation as to the charger output is equal to or greater than a first predetermined value and maintaining the changed toner density reference value until the variation of the charger output again becomes equal to or greater than the first predetermined value; or by prohibiting toner supply for a constant duration to prevent excessive toner supply if time from the end of the last operation of the developing unit to the start of a next operation, inclusive of the power-activation is equal to or longer the a predetermined period when the developing unit is activated to commence agitation of the developer.

    摘要翻译： 本发明的图像形成装置通过以下任何一种配置来控制调色剂浓度：通过与搅拌总量相关联来校正显影剂的调色剂密度; 通过控制处理参数，使得形成在感光体上的调色剂贴片的密度对应于规定的浓度值，并且确定显影剂的显影性能得到改善，并且当处理参数达到规定值时取消调色剂浓度校正; 当相对于充电器输出的变化等于或大于第一预定值并且保持改变的调色剂浓度参考值直到充电器输出的变化再次变为等于或大于第一预定值时，通过改变调色剂浓度基准值 值; 或者如果从显影单元的最后操作结束到下一个操作开始的时间（包括功率激活）等于或更长的预定时间段，则如果从显示单元的最后操作结束到下一个操作开始的时间 当显影单元被激活以开始搅拌显影剂时。

    DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND CLEANING METHOD FOR THE DEVELOPING DEVICE
    5.
    发明申请
    DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND CLEANING METHOD FOR THE DEVELOPING DEVICE 有权
    开发设备，图像形成装置和开发装置的清洁方法

    公开(公告)号：US20100196056A1

    公开(公告)日：2010-08-05

    申请号：US12695363

    申请日：2010-01-28

    申请人： Takeshi OHKAWA ,  Mitsuru Tokuyama ,  Motoyuki Itoyama

    发明人： Takeshi OHKAWA ,  Mitsuru Tokuyama ,  Motoyuki Itoyama

    IPC分类号： G03G15/08 ,  G03G15/095

    CPC分类号： G03G15/0887 ,  G03G15/0893 ,  G03G2215/0822

    摘要： A developing device includes a developer tank for housing a two-component developer containing toner and magnetic carrier; a first conveying portion having a first rotary shaft rotatable about its axis and a first screw blade which surrounds the first rotary shaft and rotates together with the first rotary shaft and contains a ferromagnetic substance; a second conveying portion having a second rotary shaft rotatable about its axis and a second screw blade which surrounds the second rotary shaft and rotates together with the second rotary shaft and contains a ferromagnetic substance; a first electromagnet for magnetizing the first screw blade; and a second electromagnet for magnetizing the second screw blade.

    摘要翻译： 显影装置包括用于容纳含有调色剂和磁性载体的双组分显影剂的显影剂罐; 第一传送部分，具有可围绕其轴线旋转的第一旋转轴和围绕第一旋转轴并与第一旋转轴一起旋转并包含铁磁性物质的第一螺旋叶片; 第二传送部分，具有可围绕其轴线旋转的第二旋转轴和围绕第二旋转轴并与第二旋转轴一起旋转并包含铁磁物质的第二螺旋叶片; 用于磁化第一螺旋叶片的第一电磁体; 以及用于磁化第二螺旋叶片的第二电磁体。

    Developing device, image forming apparatus, and cleaning method for the developing device
    7.
    发明授权
    Developing device, image forming apparatus, and cleaning method for the developing device 有权
    用于显影装置的显影装置，成像装置和清洁方法

    公开(公告)号：US08295740B2

    公开(公告)日：2012-10-23

    申请号：US12695363

    申请日：2010-01-28

    申请人： Takeshi Ohkawa ,  Mitsuru Tokuyama ,  Motoyuki Itoyama

    发明人： Takeshi Ohkawa ,  Mitsuru Tokuyama ,  Motoyuki Itoyama

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0887 ,  G03G15/0893 ,  G03G2215/0822

    摘要： A developing device includes a developer tank for housing a two-component developer containing toner and magnetic carrier; a first conveying portion having a first rotary shaft rotatable about its axis and a first screw blade which surrounds the first rotary shaft and rotates together with the first rotary shaft and contains a ferromagnetic substance; a second conveying portion having a second rotary shaft rotatable about its axis and a second screw blade which surrounds the second rotary shaft and rotates together with the second rotary shaft and contains a ferromagnetic substance; a first electromagnet for magnetizing the first screw blade; and a second electromagnet for magnetizing the second screw blade.

    摘要翻译： 显影装置包括用于容纳含有调色剂和磁性载体的双组分显影剂的显影剂罐; 第一传送部分，具有可围绕其轴线旋转的第一旋转轴和围绕第一旋转轴并与第一旋转轴一起旋转并包含铁磁性物质的第一螺旋叶片; 第二传送部分，具有可围绕其轴线旋转的第二旋转轴和围绕第二旋转轴并与第二旋转轴一起旋转并包含铁磁物质的第二螺旋叶片; 用于磁化第一螺旋叶片的第一电磁体; 以及用于磁化第二螺旋叶片的第二电磁体。

    Image correction method and image forming apparatus
    8.
    发明授权
    Image correction method and image forming apparatus 有权
    图像校正方法和图像形成装置

    公开(公告)号：US07251422B2

    公开(公告)日：2007-07-31

    申请号：US11084493

    申请日：2005-03-18

    申请人： Mitsuru Tokuyama ,  Toshiaki Ino ,  Kiyofumi Morimoto ,  Takashi Kitagawa ,  Yasuhiro Nishimura

    发明人： Mitsuru Tokuyama ,  Toshiaki Ino ,  Kiyofumi Morimoto ,  Takashi Kitagawa ,  Yasuhiro Nishimura

    IPC分类号： G03G15/00 ,  H04N1/407

    CPC分类号： G03G15/5058 ,  G03G2215/00059

    摘要： One embodiment of an image correction method is an image correction method for correcting image forming condition(s). The image correction method includes forming, on photoreceptor(s), correction test pattern(s) having continuously varying toner gradation; wherein a single correction test pattern in which density is varied in sequence from high to low in paper transport direction(s) is formed as a result of controlling exposing unit laser power(s) while photoreceptor charging potential(s) is/are held constant, or while develop bias(es) is/are held constant, or while photoreceptor charging potential(s) is/are held constant and develop bias(es) is/are held constant. In such case, total length(s) in paper transport direction(s) of such correction test pattern(s) is/are less than or equal to circumference(s) of photoreceptor(s).

    摘要翻译： 图像校正方法的一个实施例是用于校正图像形成条件的图像校正方法。 图像校正方法包括在感光体上形成具有连续变化的调色剂层次的校正测试图案; 其中，由于控制曝光单元激光功率，同时感光体充电电位保持恒定，所以形成了一个单独的校正测试图案，其中密度从纸张输送方向的高到低依次变化。 或者当显影偏差保持恒定时，或者当感光体充电电势保持恒定并且发生偏压保持恒定时。 在这种情况下，这种校正测试图案的纸张传输方向上的总长度小于或等于感光体的周长。