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    Image forming apparatus and method for obtaining appropriate toner density
    1.
    发明授权
    Image forming apparatus and method for obtaining appropriate toner density 失效
    用于获得适当调色剂密度的图像形成装置和方法

    公开(公告)号：US06055388A

    公开(公告)日：2000-04-25

    申请号：US54510

    申请日：1998-04-03

    申请人： Shigeru Watanabe ,  Masaru Tanaka ,  Haruji Mizuishi ,  Kenzou Tatsumi ,  Toshitaka Yamaguchi ,  Takeo Suda ,  Hiroshi Yoshinaga ,  Ken Amemiya ,  Mayumi Oh-Hori

    发明人： Shigeru Watanabe ,  Masaru Tanaka ,  Haruji Mizuishi ,  Kenzou Tatsumi ,  Toshitaka Yamaguchi ,  Takeo Suda ,  Hiroshi Yoshinaga ,  Ken Amemiya ,  Mayumi Oh-Hori

    IPC分类号： G03G15/08 ,  G03G15/10

    CPC分类号： G03G15/0849 ,  G03G15/0853 ,  G03G15/0891

    摘要： An image forming apparatus includes an image bearing member, a latent image forming device that forms a latent image on the image bearing member, a developing device that develops latent image on said image bearing member to a toner image with a two-component developer, and a toner density detecting device that detects toner density of the two-component developer in which the toner image is formed and outputted as a visible image onto a transfer member. A control device is provided for agitating the developer for a predetermined time period during an initial setting is performed for the developer, detecting a toner density of said developer after the predetermined agitation, and performing an abnormal process when a result of the detection is out of the predetermined range. A corresponding method recovers from a deterioration of an amount of charge of the toner and decreased bulk of the developer, and includes the steps of detecting a developer amount with an unused-state detection switch, detecting an output value of a toner density detecting sensor, agitating the developer, measuring an agitating time period, stopping the agitating operation indicating warning, and indicating error message.

    摘要翻译： 图像形成装置包括图像承载部件，在图像承载部件上形成潜像的潜像形成装置，利用双组分显影剂将所述图像承载部件上的潜像显影成调色剂图像的显影装置，以及 调色剂浓度检测装置，其检测其中调色剂图像形成并作为可见图像输出到转印部件上的双组分显影剂的调色剂浓度。 提供了一种控制装置，用于在对显影剂进行初始设定期间的预定时间段内搅拌显影剂，在预定搅拌之后检测所述显影剂的调色剂浓度，并且当检测结果不合格时执行异常处理 预定范围。 相应的方法从调色剂的电荷量的劣化和显影剂的体积减少而恢复，并且包括以下步骤：用未使用状态的检测开关检测显影剂量，检测调色剂浓度检测传感器的输出值， 搅拌显影剂，测量搅拌时间，停止搅拌操作指示警告，并指示错误信息。

    Image forming method and apparatus for controlling amount of supplied toner or agitating time
    2.
    发明授权
    Image forming method and apparatus for controlling amount of supplied toner or agitating time 失效
    用于控制供应调色剂量或搅拌时间的图像形成方法和装置

    公开(公告)号：US6006050A

    公开(公告)日：1999-12-21

    申请号：US961515

    申请日：1997-10-30

    申请人： Shigeru Watanabe ,  Masaru Tanaka ,  Haruji Mizuishi ,  Toshitaka Yamaguchi ,  Kenzou Tatsumi ,  Hiroshi Yoshinaga ,  Takeo Suda ,  Ken Amemiya ,  Mayumi Oh-Hori

    发明人： Shigeru Watanabe ,  Masaru Tanaka ,  Haruji Mizuishi ,  Toshitaka Yamaguchi ,  Kenzou Tatsumi ,  Hiroshi Yoshinaga ,  Takeo Suda ,  Ken Amemiya ,  Mayumi Oh-Hori

    IPC分类号： G03G21/14 ,  G03G15/08

    CPC分类号： G03G15/0822

    摘要： An image forming apparatus including an image bearing member, a latent image forming device which forms a latent image on the image bearing member, a developing device which develops the latent image using a two-component developer including a toner and a carrier and a toner supplying device which supplies toner into the developing device. A developer agitating device agitates developer in the developing device and a toner-density detecting device detects a toner density of developer in the developing device. A toner-density control device controls the toner density by operating the toner supplying device on the basis of a detected result according to the toner-density detecting device. A memory device stores resultant value of the toner density detected by the toner-density detecting device during image forming operations. The toner-density detecting device detects the toner density in a warm-up operation before starting the image forming operation by the image forming apparatus. The toner-density control device changes an amount of the toner supply which is supplied by the toner supplying device after starting the image forming operation according to a result of a comparison of the detected toner density in the warm-up operation with the detected result stored in the memory device. The toner-density control device changes an amount of the toner supply which is supplied by the toner supplying device after starting the image forming operation according to the resultant value of comparison of a result of a detection.

    摘要翻译： 一种图像形成装置，包括图像承载部件，在图像承载部件上形成潜像的潜像形成装置，使用包括调色剂和载体的双组分显影剂和调色剂供给来显影潜像的显影装置 将调色剂供给到显影装置中的装置。 显影剂搅拌装置搅拌显影装置中的显影剂，调色剂浓度检测装置检测显影装置中的显影剂的调色剂浓度。 调色剂浓度控制装置基于根据调色剂浓度检测装置的检测结果操作调色剂供应装置来控制调色剂浓度。 存储装置在图像形成操作期间存储由调色剂浓度检测装置检测的调色剂浓度的结果值。 调色剂浓度检测装置在图像形成装置开始图像形成操作之前检测预热操作中的调色剂浓度。 调色剂浓度控制装置根据检测到的预热操作中的调色剂浓度与检测结果的比较结果，改变在开始成像操作之后由调色剂供应装置供应的调色剂供应量 在存储设备中。 调色剂浓度控制装置根据检测结果的比较的结果值，改变在开始图像形成操作之后由调色剂供应装置供应的调色剂供应量。

    Image forming device with improved mixing of circulated developer with replensihed toner
    4.
    发明授权
    Image forming device with improved mixing of circulated developer with replensihed toner 失效
    图像形成装置，其具有改进的循环显影剂与补充调色剂的混合

    公开(公告)号：US5887224A

    公开(公告)日：1999-03-23

    申请号：US862695

    申请日：1997-05-23

    申请人： Haruji Mizuishi ,  Masaru Tanaka ,  Shigeru Watanabe ,  Kenzo Tatsumi ,  Toshitaka Yamaguchi ,  Takeo Suda ,  Hiroshi Yoshinaga ,  Ken Amemiya ,  Mayumi Yoshida

    发明人： Haruji Mizuishi ,  Masaru Tanaka ,  Shigeru Watanabe ,  Kenzo Tatsumi ,  Toshitaka Yamaguchi ,  Takeo Suda ,  Hiroshi Yoshinaga ,  Ken Amemiya ,  Mayumi Yoshida

    IPC分类号： G03G15/08 ,  G03G21/10

    CPC分类号： G03G15/0822 ,  G03G21/105 ,  G03G2215/0822

    摘要： There is provided an image forming device capable of preventing smudges on the background of an image due to excess toner replenishment caused by a failure in stirring developer and toner enough to charge the toner or scattering of replenished toner without being charged. A toner conveying member for conveying replenished toner from a toner replenishing portion through a toner replenishing port to a developer stirring and conveying member is constructed by a screw member unitarily formed with the developer stirring and conveying member. The screw member has a spiral conveying fin capable of conveying the replenished toner at relatively high speed. The replenished toner is delivered to a toner replenishing portion provided in the upstream of a developer receiving portion of the screw member.

    摘要翻译： 提供了一种图像形成装置，其能够防止由于搅拌显影剂的故障引起的多余的调色剂补充以及足以使调色剂充电或补充调色剂的飞散而不被充电而导致的图像背景上的污迹。 通过与显影剂搅拌和传送部件一体地形成的螺钉部件构成用于将补充调色剂从调色剂补充部分通过调色剂补充口输送到显影剂搅拌和传送部件的调色剂传送部件。 螺杆构件具有螺旋输送翅片，能够以相对高的速度输送补充的调色剂。 补充的调色剂被输送到设置在螺杆构件的显影剂接收部分的上游的调色剂补充部分。

    Image forming apparatus with improved toner density control
    6.
    发明授权
    Image forming apparatus with improved toner density control 有权
    具有改进的调色剂浓度控制的图像形成装置

    公开(公告)号：US6148161A

    公开(公告)日：2000-11-14

    申请号：US414857

    申请日：1999-10-12

    申请人： Noriyuki Usui ,  Ken Amemiya ,  Haruji Mizuishi ,  Mayumi Ohori ,  Masaru Tanaka ,  Kenzo Tatsumi ,  Toshitaka Yamaguchi ,  Hideki Zemba ,  Hiroshi Mizusawa

    发明人： Noriyuki Usui ,  Ken Amemiya ,  Haruji Mizuishi ,  Mayumi Ohori ,  Masaru Tanaka ,  Kenzo Tatsumi ,  Toshitaka Yamaguchi ,  Hideki Zemba ,  Hiroshi Mizusawa

    IPC分类号： G03G15/08 ,  G03G15/10

    CPC分类号： G03G15/0822 ,  G03G15/0849 ,  G03G15/0853 ,  G03G15/5041 ,  G03G2215/00042

    摘要： An image forming apparatus includes an image carrier and a developing device to develop a latent image formed on the image carrier by applying two-component developer, including toner, onto the latent image. The developing device includes a developing part containing the two-component developer and a developer stirring device to stir the two-component developer. A toner supplying device supplies toner to the developing part of the developing device, and a toner density detection device detects a toner density of the two-component developer in the developing device. A toner control device calculates a difference between an output value VT of the toner density detection device and a criterion value VTref for controlling the toner density of the two-component developer and controls the toner supplying device based upon the difference. An image density detection device detects an image density of a criterion image formed on the image carrier, and a criterion value correcting device corrects the criterion value VTref based upon an output value of the criterion image density detection device. A decision as to whether to stir the developer in the developing device with the developer stirring device is made based upon a difference between the criterion value VTref and the output value VT from the toner density detection device and an output value of the criterion image density detection device when an image forming operation is started.

    摘要翻译： 图像形成装置包括图像载体和显影装置，以通过将包括调色剂的双组分显影剂施加到潜像上来显影形成在图像载体上的潜像。 显影装置包括含有双组分显影剂的显影部分和用于搅拌双组分显影剂的显影剂搅拌装置。 调色剂供应装置向显影装置的显影部分供应调色剂，并且调色剂浓度检测装置检测显影装置中的双组分显影剂的调色剂浓度。 调色剂控制装置计算调色剂浓度检测装置的输出值VT与用于控制双组分显影剂的调色剂浓度的标准值VTref之间的差异，并基于该差异来控制调色剂供给装置。 图像浓度检测装置检测形成在图像载体上的标准图像的图像浓度，并且基准值校正装置基于标准图像浓度检测装置的输出值来校正标准值VTref。 基于标准值VTref和来自调色剂浓度检测装置的输出值VT与标准图像浓度检测的输出值之间的差异，决定是否用显影剂搅拌装置搅拌显影装置中的显影剂 当图像形成操作开始时的装置。

    Image-forming apparatus having a seal for a developer and a method for detecting a removal of the seal
    7.
    发明授权
    Image-forming apparatus having a seal for a developer and a method for detecting a removal of the seal 有权
    具有用于显影剂的密封件的图像形成装置和用于检测密封件的移除的方法

    公开(公告)号：US06266501B1

    公开(公告)日：2001-07-24

    申请号：US09482961

    申请日：2000-01-14

    申请人： Haruji Mizuishi ,  Masaru Tanaka ,  Kenzo Tatsumi ,  Ken Amemiya ,  Toshitaka Yamaguchi ,  Hideki Zemba ,  Noriyuki Usui ,  Mayumi Ohori ,  Hiroshi Mizusawa

    发明人： Haruji Mizuishi ,  Masaru Tanaka ,  Kenzo Tatsumi ,  Ken Amemiya ,  Toshitaka Yamaguchi ,  Hideki Zemba ,  Noriyuki Usui ,  Mayumi Ohori ,  Hiroshi Mizusawa

    IPC分类号： G03G1508

    CPC分类号： G03G15/0882 ,  G03G15/0849 ,  G03G2215/0687 ,  G03G2215/088

    摘要： An image-forming apparatus includes an image-bearing device that holds an electrostatic latent image and a toner image thereon, and a developer container that contains and agitates a developer having at least a toner. The image-forming apparatus also includes a developer-bearing device that carries the developer to develop the electrostatic latent image on the image-bearing device, and a density sensor that detects an optical density of a surface of the image-bearing device and a toner image on the image-bearing device. Further, the image-forming apparatus includes a developer seal that seals the developer in the developer container, wherein the seal is disposed between the developer container and the developer-bearing device, and an actuator configured to actuate the developer container and the developer-bearing device. The image-forming apparatus still further includes a control device that determines whether the developer seal is removed according to information on the optical density of the toner image output by the density sensor.

    摘要翻译： 图像形成装置包括在其上保持静电潜像和调色剂图像的图像承载装置和包含并搅拌至少具有调色剂的显影剂的显影剂容器。 图像形成装置还包括承载显影剂以显影图像承载装置上的静电潜像的显影剂承载装置和检测图像承载装置的表面的光密度的浓度传感器和调色剂 图像承载设备上的图像。 此外，图像形成装置包括密封显影剂容器中的显影剂的显影剂密封件，其中密封件设置在显影剂容器和显影剂承载装置之间，致动器构造成致动显影剂容器和显影剂承载 设备。 图像形成装置还包括控制装置，其根据由密度传感器输出的调色剂图像的光密度的信息来确定是否去除显影剂密封。

    Image forming apparatus with a folding transfer device support member
    10.
    发明授权
    Image forming apparatus with a folding transfer device support member 失效
    具有折叠传送装置支撑构件的图像形成装置

    公开(公告)号：US5923935A

    公开(公告)日：1999-07-13

    申请号：US777086

    申请日：1996-12-30

    申请人： Toshitaka Yamaguchi

    发明人： Toshitaka Yamaguchi

    IPC分类号： G03G15/16 ,  G03G21/16

    CPC分类号： G03G15/167 ,  G03G21/168 ,  G03G2215/0054 ,  G03G2221/1642 ,  G03G2221/1675 ,  G03G2221/1684

    摘要： An image forming apparatus which transfers a toner image formed on an image carrier to a recording medium with a transfer device and separates the recording medium from the image carrier by discharging the recording medium with a discharging device. The image forming apparatus includes a support member which supports the transfer device and which includes a first support element pivotally mounted to a main body of the apparatus and a second support element. The second support element is pivotally mounted to the first support element at one end and unattached at the other end. The second support element may be solely supported by the first support element. The first support element is supported from below and by pivoting a support member out from under the first support element, the transfer device moves between a working position facing a surface of the image carrier and a recessed position separated from the image carrier by a larger distance than when the transfer device is in the working position. A relatively large space is thus formed between the image carrier and the transfer device and clearance of a jammed sheet is facilitated. The transfer device is detachable from the second support element and the discharging device is also detachable from the second support element independently or integrally with the transfer device.

    摘要翻译： 一种图像形成装置，其通过转印装置将形成在图像载体上的调色剂图像转印到记录介质上，并通过用放电装置排出记录介质将记录介质与图像载体分离。 图像形成装置包括支撑构件，该支撑构件支撑转印装置，并且包括可枢转地安装到装置主体的第一支撑元件和第二支撑元件。 第二支撑元件在一端枢转地安装到第一支撑元件并且在另一端处未连接。 第二支撑元件可以仅由第一支撑元件支撑。 第一支撑元件从下方被支撑并且通过将支撑构件从第一支撑元件下方枢转，所述转移装置在面向图像载体的表面的工作位置与从图像载体分离较大距离的凹进位置之间移动 比传送装置处于工作位置时。 因此，在图像载体和转印装置之间形成相对大的空间，并且促进了卡住的片材的间隙。 传送装置可从第二支撑元件拆卸，并且排出装置也可独立地或与传送装置整体地从第二支撑元件拆卸。