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    Developing apparatus and image forming apparatus
    4.
    发明授权
    Developing apparatus and image forming apparatus 有权
    显影装置和图像形成装置

    公开(公告)号：US06751423B2

    公开(公告)日：2004-06-15

    申请号：US10295917

    申请日：2002-11-18

    申请人： Katsuhiro Sakaizawa ,  Satoshi Tsuruya ,  Seiichi Shinohara ,  Masahiro Shibata

    发明人： Katsuhiro Sakaizawa ,  Satoshi Tsuruya ,  Seiichi Shinohara ,  Masahiro Shibata

    IPC分类号： G03G1508

    CPC分类号： G03G15/0812

    摘要： A developing apparatus includes a developer carrying member for carrying a developer to develop an electrostatic image formed on an image bearing member with the developer; a developer regulating member regulates an amount of the developer carried on the developer carrying member; and a controller for controlling a potential difference between the developer carrying member and the developer regulating member such that the potential difference is larger in at least a part of non-developing operation than in a developing operation when the developer carrying member carries the developer.

    摘要翻译： 显影装置包括显影剂承载构件，用于承载显影剂以使显影剂形成在图像承载构件上的静电图像显影; 显影剂调节构件调节承载在显影剂承载构件上的显影剂的量; 以及控制器，用于控制显影剂承载构件和显影剂调节构件之间的电位差，使得当非显影操作的至少一部分中的电位差大于显影剂承载构件携带显影剂时的显影操作中的电位差。

    Image forming apparatus and control method for the image forming apparatus
    6.
    发明授权
    Image forming apparatus and control method for the image forming apparatus 失效
    图像形成装置和图像形成装置的控制方法

    公开(公告)号：US07068956B2

    公开(公告)日：2006-06-27

    申请号：US11126269

    申请日：2005-05-11

    申请人： Shinichi Tsukida ,  Katsuhiro Sakaizawa ,  Masahiro Shibata

    发明人： Shinichi Tsukida ,  Katsuhiro Sakaizawa ,  Masahiro Shibata

    IPC分类号： G03G15/01 ,  G03G15/08

    CPC分类号： G03G15/0856 ,  G03G15/0862 ,  G03G15/0863 ,  G03G2215/0177

    摘要： An image forming apparatus, including: an image bearing member on a surface of which an electrostatic latent image is formed; a developing device which contains a developer and which has a rotatable developer carrying member, which abuts against the surface of the image bearing member, and a storage device storing information on image formation history, the developing device being adapted to visualize the electrostatic latent image on the surface of the image bearing member as the developer carrying member carries the developer to the electrostatic latent image; a moving mechanism which moves the developing device to one of a first position where development is performed and a second position where development is not performed; and a control device which controls, based upon the information on image formation history stored in the storage device, an operation for giving a charge to the developer according to a lapsed time from a finish time of image formation, in a state in which the developing device is moved to the second position by the moving mechanism. In the image forming apparatus, a toner is charged sufficiently in the developing device, and image failure due to insufficiency in a charging amount of toner may be prevented, thereby capable of forming a high quality image.

    摘要翻译： 一种图像形成装置，包括：在其表面上形成静电潜像的图像承载部件; 显影装置，其包含显影剂并且具有抵靠图像承载部件的表面的可旋转的显影剂承载部件和存储关于图像形成历史的信息的存储装置，所述显影装置适于使静电潜像可视化 作为显影剂承载构件的图像承载构件的表面将显影剂携带到静电潜像; 移动机构，其将显影装置移动到执行显影的第一位置和不执行显影的第二位置之一; 以及控制装置，其基于存储在存储装置中的图像形成历史的信息，根据从图像形成的完成时间起的经过时间向显影剂充电的操作，在显影 装置通过移动机构移动到第二位置。 在图像形成装置中，调色剂在显影装置中充分充电，并且可以防止由于调色剂的充电量不足导致的图像故障，从而能够形成高质量的图像。

    Image forming apparatus and control method for the image forming apparatus
    7.
    发明申请
    Image forming apparatus and control method for the image forming apparatus 失效
    图像形成装置和图像形成装置的控制方法

    公开(公告)号：US20050201766A1

    公开(公告)日：2005-09-15

    申请号：US11126269

    申请日：2005-05-11

    申请人： Shinichi Tsukida ,  Katsuhiro Sakaizawa ,  Masahiro Shibata

    发明人： Shinichi Tsukida ,  Katsuhiro Sakaizawa ,  Masahiro Shibata

    IPC分类号： G03G9/08 ,  G03G15/00 ,  G03G15/01 ,  G03G15/08 ,  G03G21/14

    CPC分类号： G03G15/0856 ,  G03G15/0862 ,  G03G15/0863 ,  G03G2215/0177

    摘要： An image forming apparatus, including: an image bearing member on a surface of which an electrostatic latent image is formed; a developing device which contains a developer and which has a rotatable developer carrying member, which abuts against the surface of the image bearing member, and a storage device storing information on image formation history, the developing device being adapted to visualize the electrostatic latent image on the surface of the image bearing member as the developer carrying member carries the developer to the electrostatic latent image; a moving mechanism which moves the developing device to one of a first position where development is performed and a second position where development is not performed; and a control device which controls, based upon the information on image formation history stored in the storage device, an operation for giving a charge to the developer according to a lapsed time from a finish time of image formation, in a state in which the developing device is moved to the second position by the moving mechanism. In the image forming apparatus, a toner is charged sufficiently in the developing device, and image failure due to insufficiency in a charging amount of toner may be prevented, thereby capable of forming a high quality image.

    摘要翻译： 一种图像形成装置，包括：在其表面上形成有静电潜像的图像承载部件; 显影装置，其包含显影剂并且具有抵靠图像承载部件的表面的可旋转的显影剂承载部件和存储关于图像形成历史的信息的存储装置，所述显影装置适于使静电潜像可视化 作为显影剂承载构件的图像承载构件的表面将显影剂携带到静电潜像; 移动机构，其将显影装置移动到执行显影的第一位置和不执行显影的第二位置之一; 以及控制装置，其基于存储在存储装置中的图像形成历史的信息，根据从图像形成的完成时间开始的时间，对显影剂进行充电的操作，在显影 装置通过移动机构移动到第二位置。 在图像形成装置中，调色剂在显影装置中充分充电，并且可以防止由于调色剂的充电量不足导致的图像故障，从而能够形成高质量的图像。

    Image forming apparatus
    8.
    发明授权
    Image forming apparatus 失效
    图像形成装置

    公开(公告)号：US06560426B2

    公开(公告)日：2003-05-06

    申请号：US09947377

    申请日：2001-09-07

    申请人： Katsuhiro Sakaizawa ,  Satoshi Tsuruya ,  Jun Suzuki ,  Masaru Shimura

    发明人： Katsuhiro Sakaizawa ,  Satoshi Tsuruya ,  Jun Suzuki ,  Masaru Shimura

    IPC分类号： G03G1524

    CPC分类号： G03G21/0064 ,  G03G15/0241

    摘要： An image forming apparatus includes an image bearing member; an electrostatic image forming unit for forming an electrostatic image on said image bearing member, the electrostatic image forming unit including a flexible charge member for electrically charging the image bearing member, the charge member forming a nip between the image bearing member and itself and is supplied with an oscillating voltage, wherein electroconductive particles are provided in the nip; and a developing unit for developing an electrostatic image formed on the image bearing member with a developer, the developing unit being capable of a residual developer on the image bearing member, wherein a frequency f (cycle/sec) of the oscillating voltage and a peripheral speed v (mm/sec) of the image bearing member satisfy |f/v|≧12 (cycle/mm).

    摘要翻译： 图像形成装置包括：图像承载部件; 静电图像形成单元，用于在所述图像承载部件上形成静电图像，所述静电图像形成单元包括用于对图像承载部件充电的柔性充电部件，所述充电部件在图像承载部件与其自身之间形成辊隙， 具有振荡电压，其中导电颗粒设置在辊隙中; 以及显影单元，用于利用显影剂使形成在图像承载部件上的静电图像显影，该显影单元能够在图像承载部件上具有残留的显影剂，其中振荡电压的频率f（周期/秒） 图像承载部件的速度v（mm / sec）满足| f / v |> = 12（周期/ mm）。

    Image forming apparatus featuring application of superimposed DC and AC voltages and DC voltage
    9.
    发明授权
    Image forming apparatus featuring application of superimposed DC and AC voltages and DC voltage 失效
    图像形成装置具有叠加的直流和交流电压和直流电压

    公开(公告)号：US06603935B2

    公开(公告)日：2003-08-05

    申请号：US10058413

    申请日：2002-01-30

    申请人： Satoshi Tsuruya ,  Katsuhiro Sakaizawa ,  Jun Suzuki ,  Masaru Shimura

    发明人： Satoshi Tsuruya ,  Katsuhiro Sakaizawa ,  Jun Suzuki ,  Masaru Shimura

    IPC分类号： G03G1500

    CPC分类号： G03G15/0216 ,  G03G2221/0005

    摘要： An image forming apparatus includes an image bearing member, a flexible changing member and a developing device. When a first area to be an image forming area of the image bearing member, is present in a nip portion, a superimposed voltage resulting from a direct current voltage and an alternating voltage having a peak to peak voltage smaller than an alternating voltage applied when a charging potential of the image bearing member is converged is applied to the charging member. When a part of a second area to be a non-image area of the image bearing member exists in the nip portion, a direct current voltage without an alternating voltage is applied to the charging member.

    摘要翻译： 图像形成装置包括图像承载部件，柔性更换部件和显影装置。 当作为图像承载部件的图像形成区域的第一区域存在于夹持部分中时，由直流电压和具有峰值电压的交流电压产生的叠加电压小于当a 将图像承载部件的充电电势收敛到充电部件。 当在夹持部中存在作为图像承载部件的非图像区域的第二区域的一部分时，将没有交流电压的直流电压施加到充电部件。

    Image forming apparatus with superposed direct current and alternating current charging voltage
    10.
    发明授权
    Image forming apparatus with superposed direct current and alternating current charging voltage 失效
    具有叠加直流和交流充电电压的图像形成装置

    公开(公告)号：US06611669B2

    公开(公告)日：2003-08-26

    申请号：US09921700

    申请日：2001-08-06

    申请人： Jun Suzuki ,  Satoshi Tsuruya ,  Katsuhiro Sakaizawa ,  Masaru Shimura

    发明人： Jun Suzuki ,  Satoshi Tsuruya ,  Katsuhiro Sakaizawa ,  Masaru Shimura

    IPC分类号： G03G1530

    CPC分类号： G03G15/0241 ,  G03G2221/0005

    摘要： An image forming apparatus includes a flexible charging member, which forms a nip portion between itself and an image bearing member. The charging member charges the image bearing member and is applied with a voltage when the charging member at least charges the image bearing member for an image formation. The nip portion is provided with an electrically conductive particles developing device for developing an electrostatic image formed on the image bearing member with a developer. The developing device executes a developing operation and, at the same time, executes a collecting operation for collecting a residual developer on the image bearing member. The voltage is a superposed voltage with a direct current voltage and an alternating current voltage having a peak to peak voltage, which is less than a peak to peak voltage of the alternating current voltage applied to the charging member when the charging potential of the image bearing member converges under the condition that the charging member charges the image bearing member without the conductive particles.

    摘要翻译： 图像形成装置包括柔性充电构件，其在其自身和图像承载构件之间形成夹持部。 充电构件对图像承载构件充电，并且当充电构件至少对图像承载构件充电以进行图像形成时施加电压。 夹持部设置有用显影剂使形成在图像承载部件上的静电图像显影的导电性粒子显影装置。 显影装置执行显影操作，并且同时执行用于在图像承载部件上收集残留显影剂的收集操作。 电压是具有直流电压和具有峰峰值电压的交流电压的叠加电压，当图像承载的充电电位为小于施加到充电部件的交流电压的峰峰值电压时 构件在充电构件对不含导电颗粒的图像承载构件充电的条件下会聚。