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1. 发明授权

US06832058B2 Image forming apparatus including a maximum charge quantity of toner particles forming useless toner 失效
标题翻译：图像形成装置包括形成无用调色剂的调色剂颗粒的最大电荷量
公开(公告)号：US06832058B2
公开(公告)日：2004-12-14
申请号：US10316438
申请日：2002-12-11
申请人： Hiroshi Akita , Kunio Shigeta , Takenobu Kimura , Yotaro Sato
发明人： Hiroshi Akita , Kunio Shigeta , Takenobu Kimura , Yotaro Sato
IPC分类号： G03G1500
CPC分类号： G03G13/09 , G03G2215/0119
摘要： In an image forming apparatus, an electrostatic latent image is reverse-developed by a developing device with a development bias applied, through conveying a two-component developer layer containing toner particles having a volume-average particle diameter of 3 to 5 &mgr;m by a developer carrying member rotatably provided, a developed toner image is transferred onto a recording medium or an intermediate transfer body, and untransferred toner particles remaining on an image forming body having passed a transfer region are removed by a cleaning member provided in pressure contact with the surface of the image forming body. The length in an axis direction of the image forming body of an useless toner image formed on the image forming body at the starting time and the ending time of an image formation sequence denoted by L, the total charge quantity of the toner particles making up the useless toner image is 0.04L &mgr;C or less.
摘要翻译：在图像形成装置中，通过施加显影偏压的显影装置将静电潜像反转显影，通过用显影剂输送含有体积平均粒径为3〜5μm的调色剂颗粒的双组分显影剂层显影的调色剂图像被转印到记录介质或中间转印体上，并且残留在已经通过转印区域的图像形成体上的未转印的调色剂颗粒通过与图像形成体。在由L表示的图像形成顺序的开始时间和结束时间，在图像形成体上形成的无用调色剂图像的图像形成体的轴向长度，构成调色剂颗粒的总电荷量无用墨粉图像为0.04L muC以下。

2. 发明授权

US06721526B2 Image forming apparatus with improved developing device 有权
标题翻译：具有改进的显影装置的图像形成装置
公开(公告)号：US06721526B2
公开(公告)日：2004-04-13
申请号：US10255848
申请日：2002-09-26
申请人： Kunio Shigeta , Hiroshi Akita , Takenobu Kimura , Yotaro Sato
发明人： Kunio Shigeta , Hiroshi Akita , Takenobu Kimura , Yotaro Sato
IPC分类号： G03G1509
CPC分类号： G03G9/0821 , G03G9/0819 , G03G9/10 , G03G13/09 , G03G15/09 , G03G2215/0609
摘要： An image forming apparatus is provided for obtaining excellent developing properties using toner with small particle diameters and for forming high-quality visual images. In a developing device of an image forming apparatus, a two-component developer is used which satisfies conditions that volume mean particle diameter dt of a toner is 3˜5 &mgr;m (Condition 1), volume mean particle diameter dc of a carrier is 5 dt˜10 dt (Condition 2), and a weight ratio Rw of the toner and the carrier is 1.6 (dt/dc) ×(&rgr;t/&rgr;c)˜2.4 (dt/dc)×(&rgr;t/&rgr;c) (Condition 3, where &rgr;t and &rgr;c are density of the toner and the carrier, respectively). A main magnetic pole M of a rotary sleeve is arranged in the vicinity of the closest position of the rotary sleeve and an image forming body, and the closest distance D between the rotary sleeve and the image forming body satisfies a condition that D is 0.5 H˜0.8 H for the free tip height H of a magnetic brush B of the main magnetic pole M. It is preferable that the actual supplied amount of the toner is regulated within a specific range.
摘要翻译：提供了一种图像形成装置，用于使用具有小粒径的调色剂获得优异的显影性能并且用于形成高质量的视觉图像。在图像形成装置的显影装置中，使用满足调色剂的体积平均粒径dt为3〜5μm（条件1），载体的体积平均粒径dc为5d的条件的双组分显影剂〜10 dt（条件2），调色剂和载体的重量比Rw为1.6（dt / dc）×（rhot / rhoc）〜2.4（dt / dc）×（rhot / rhoc）（条件3， rhot和rhoc分别是调色剂和载体的密度）。旋转套筒的主磁极M布置在旋转套筒和图像形成体的最近位置附近，并且旋转套筒和成像体之间的最近距离D满足D为0.5H的条件对于主磁极M的磁刷B的自由尖端高度H为〜0.8H。调色剂的实际供给量优选调节在特定范围内。

3. 发明授权

US07251442B2 Color image forming apparatus having advanced transfer system 有权
标题翻译：彩色图像形成装置具有先进的传送系统
公开(公告)号：US07251442B2
公开(公告)日：2007-07-31
申请号：US11113059
申请日：2005-04-25
申请人： Yotaro Sato , Takenobu Kimura , Hiroshi Akita
发明人： Yotaro Sato , Takenobu Kimura , Hiroshi Akita
IPC分类号： G03G15/16
CPC分类号： G03G15/1605 , G03G15/169 , G03G2215/0119 , G03G2215/1609
摘要： An image forming apparatus having an intermediate transfer body in which color toner images are superimposed on the intermediate transfer body is disclosed. Additionally, the toner image potential may be suppressed in areas with large toner electrostatic charge of the toner layer on the intermediate transfer body, while the toner image potential is left as such in the low toner adhesion areas. The image forming apparatus with a neutralizing charger is capable of yielding satisfactory second transfer images without causing image roughness or toner scattering.
摘要翻译：公开了一种具有中间转印体的图像形成装置，其中彩色调色剂图像叠加在中间转印体上。此外，在中间转印体上的调色剂层的调色剂静电荷较大的区域中，调色剂图像电位可能被抑制，而调色剂图像电位留在低调色剂附着区域。具有中和充电器的图像形成装置能够产生令人满意的第二转印图像而不引起图像粗糙度或调色剂散射。

4. 发明申请

US20060051138A1 Color image forming apparatus 有权
标题翻译：彩色图像形成装置
公开(公告)号：US20060051138A1
公开(公告)日：2006-03-09
申请号：US11113059
申请日：2005-04-25
申请人： Yotaro Sato , Takenobu Kimura , Hiroshi Akita
发明人： Yotaro Sato , Takenobu Kimura , Hiroshi Akita
IPC分类号： G03G15/16
CPC分类号： G03G15/1605 , G03G15/169 , G03G2215/0119 , G03G2215/1609
摘要： An image forming apparatus including: an image forming section for forming a toner image with toner particles having a first electric polarity; an intermediate transfer body; a first transfer section for transferring the toner image to the intermediate transfer body; a second transfer section for transferring to a recording medium; a charger for applying charges to the toner image on the intermediate transfer body before transferring, the charger having a discharge electrode and a grid; and a charge control section for applying a first voltage and a second voltage to the discharge electrode and the grid, respectively, the first voltage having a polarity reversed from the first electric polarity, the second voltage having an potential between a surface potential of the intermediate transfer body where no toner particle is adhered and a second surface potential of a portion where toner particles are maximally adhered.
摘要翻译：一种图像形成装置，包括：图像形成部，用于利用具有第一电极性的调色剂颗粒形成调色剂图像; 中间转印体; 用于将调色剂图像转印到中间转印体的第一转印部分; 用于传送到记录介质的第二传送部分; 用于在转印之前向中间转印体上的调色剂图像施加电荷的充电器，充电器具有放电电极和电网; 以及充电控制部分，分别向放电电极和电网施加第一电压和第二电压，所述第一电压具有与第一电极性相反极性的第一电压，第二电压具有中间体的表面电位之间的电势不附着调色剂颗粒的转印体和调色剂颗粒最大粘附的部分的第二表面电位。

5. 发明申请

US20060056869A1 Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：US20060056869A1
公开(公告)日：2006-03-16
申请号：US11135496
申请日：2005-05-24
申请人： Yotaro Sato , Takenobu Kimura , Hiroshi Akita
发明人： Yotaro Sato , Takenobu Kimura , Hiroshi Akita
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/161
摘要： Disclosed is an image forming apparatus that comprises: an image bearing member; an image forming unit for forming a toner image on the image bearing member; an intermediate transfer member; a first transfer device for transferring the toner image on the image bearing member onto the intermediate transfer member; a second transfer device for transferring the toner image on the intermediate transfer member onto a transfer material; an intermediate transfer member cleaner for cleaning the intermediate transfer member after the transfer; a charging unit for giving the electric charge to the intermediate transfer member; and a control unit by which, when the charging unit is controlled, in non-image area on the intermediate transfer member, the intermediate transfer member is charged to the reverse polarity to the charge of toner, and the toner adhered to the second transfer device is transferred to the intermediate transfer member.
摘要翻译：公开了一种图像形成装置，包括：图像承载部件; 图像形成单元，用于在图像承载部件上形成调色剂图像; 中间转印部件; 用于将图像承载部件上的调色剂图像转印到中间转印部件上的第一转印装置; 用于将中间转印部件上的调色剂图像转印到转印材料上的第二转印装置; 中间转印部件清洁剂，用于在转印之后清洁中间转印部件; 用于向中间转印部件充电的充电单元; 以及控制单元，当所述充电单元被控制在所述中间转印构件上的非图像区域中时，所述中间转印构件被充电到与调色剂的电荷相反的极性，并且所述调色剂粘附到所述第二转印装置被转移到中间转印部件。

6. 发明授权

US06985685B2 Developing device and image forming apparatus 失效
标题翻译：显影装置和图像形成装置
公开(公告)号：US06985685B2
公开(公告)日：2006-01-10
申请号：US10800687
申请日：2004-03-16
申请人： Kunio Shigeta , Seiko Itagaki , Seiji Yamaguchi , Toru Komatsu , Hiroshi Akita
发明人： Kunio Shigeta , Seiko Itagaki , Seiji Yamaguchi , Toru Komatsu , Hiroshi Akita
IPC分类号： G03G15/08
CPC分类号： G03G15/0887 , G03G15/0853 , G03G15/0893 , G03G2215/0119 , G03G2215/0819
摘要： A developing device has a rotary developer carrier, a rotary developer supply and collection member, a first and second rotary developer stirring members for stirring the developer while conveying and circulating the developer between them in the direction opposite to each other and having the same developer conveyance power, and a third rotary developer stirring member having a zero conveyance power in the rotary axis direction, which are provided in a housing in parallel with each other in this order in the direction to leave a latent image carrier. A toner replenishment inlet is provided at an upper part where the second and third stirring members face each other, and on an upstream side of the second stirring member in the developer conveyance direction, and the second and third stirring members are rotated downwardly at the position where both developer stirring members face each other.
摘要翻译：显影装置具有旋转显影剂载体，旋转显影剂供应和收集构件，第一和第二旋转显影剂搅拌构件，用于搅拌显影剂，同时在它们之间沿着彼此相反的方向输送和循环显影剂，并具有相同的显影剂输送功率和第三旋转显影剂搅拌构件，其在旋转轴线方向上具有零传送功率，它们沿着离开潜像载体的方向以彼此平行的方式设置在壳体中。在第二搅拌构件和第三搅拌构件相对的上部，以及在第二搅拌构件的显影剂输送方向的上游侧设置调色剂补充口，第二搅拌构件和第三搅拌构件在位置其中两个显影剂搅拌构件彼此面对。

7. 发明授权

US07251440B2 Development apparatus and image formation apparatus 失效
标题翻译：显影装置和图像形成装置
公开(公告)号：US07251440B2
公开(公告)日：2007-07-31
申请号：US10802807
申请日：2004-03-18
申请人： Kunio Shigeta , Hiroshi Akita , Seiko Itagaki
发明人： Kunio Shigeta , Hiroshi Akita , Seiko Itagaki
IPC分类号： G03G15/08
CPC分类号： G03G15/0893 , G03G15/0877 , G03G2215/0827 , G03G2215/0838 , G03G2221/0005
摘要： A development apparatus has: a housing in which a developer supplying/collecting unit and a developer stirring unit are arranged with a circular passage for carrying developer; a developer carrying member placed at a front side of the developer supplying/collecting unit; a developer supplying/collecting section for carrying the developer; and two developer stirring sections arranged in the front-and-rear direction so as to face, wherein, a toner supplying opening is formed above a position where the two developer stirring sections face and at an upstream side in a developer carrying direction, the two developer stirring sections are rotated at the facing position to move peripheries in a forward direction, the developer carrying direction by the two developer stirring sections is substantially opposite to one by the developer supplying/collecting section, and developer carrying capability of the two developer stirring sections is set to be made equal to that of the developer supplying/collecting section.
摘要翻译：显影装置具有：显影剂供给/收集单元和显影剂搅拌单元布置有用于承载显影剂的圆形通道的壳体; 放置在显影剂供给/收集单元的前侧的显影剂承载构件; 用于承载显影剂的显影剂供应/收集部分; 和两个显影剂搅拌部分，其沿前后方向排列成面对，其中调色剂供给口形成在两个显影剂搅拌部分的位置上方，并且在显影剂传送方向的上游侧，显影剂搅拌部分在面对位置旋转以沿向前方向移动周边，两个显影剂搅拌部分的显影剂传送方向与显影剂供应/收集部分基本上相反，并且两个显影剂搅拌部分的显影剂承载能力被设置为等于显影剂供应/收集部分的相等。

8. 发明授权

US06798999B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US06798999B2
公开(公告)日：2004-09-28
申请号：US10439032
申请日：2003-05-14
申请人： Seiko Itagaki , Kunio Shigeta , Hiroshi Akita
发明人： Seiko Itagaki , Kunio Shigeta , Hiroshi Akita
IPC分类号： G03G1500
CPC分类号： G03G15/5041 , G03G15/5037 , G03G2215/00042 , G03G2215/00054
摘要： This invention relates to an image forming apparatus which forms an image on a transfer medium using a two-component developing agent by electrophotography. An image forming apparatus according to this invention includes a potential sensor which measures the charging potential on an image forming body and a patch density sensor which detects the toner attraction amount of a patch image. In the image forming apparatus, a toner charge amount Qt (&mgr;C/g) is calculated from the potential of a patch image before and after development detected by the potential sensor and the image density of a developed patch image detected by the patch density sensor, and image formation is performed by setting image formation conditions based on the calculated toner charge amount Qt. To set the image formation conditions, a table which stores in advance an image formation condition corresponding to the toner charge amount Qt is used.
摘要翻译：本发明涉及一种使用双组分显影剂通过电子照相在转印介质上形成图像的图像形成装置。根据本发明的图像形成装置包括测量图像形成体上的充电电位的电位传感器和检测贴片图像的调色剂吸引量的贴片密度传感器。在图像形成装置中，根据由电位传感器检测到的显影前后的贴片图像的电位和由贴片密度传感器检测出的显影片图像的图像浓度，计算出调色剂充电量Qt（μC/ g）并且通过基于计算出的调色剂带电量Qt设定图像形成条件来进行图像形成。为了设置图像形成条件，使用预先存储与调色剂充电量Qt相对应的图像形成条件的表。

9. 发明授权

US08503901B2 Image forming apparatus with a toner contamination detecting device 有权
标题翻译：具有调色剂污染检测装置的图像形成装置
公开(公告)号：US08503901B2
公开(公告)日：2013-08-06
申请号：US12877548
申请日：2010-09-08
申请人： Hiroshi Akita , Seiko Itagaki , Natsuko Minegishi , Hiroyuki Saito
发明人： Hiroshi Akita , Seiko Itagaki , Natsuko Minegishi , Hiroyuki Saito
IPC分类号： G03G21/00
CPC分类号： G03G15/169
摘要： An image forming apparatus includes: an image carrier; a latent image forming device; a developing device; an electrode which faces to the image carrier; an electric power source, a toner contamination detecting device for detecting toner contamination onto the electrode; an electrode cleaning device for cleaning the electrode; and a controlling section. The control section controls the electric power source to apply at least an alternating current voltage to the electrode so that toner image is rearranged by reciprocally moving toner of the toner image between the image carrier and the electrode control section and allows the electrode cleaning device to clean the electrode when the toner contamination detecting device detects toner contamination on the electrode, and performs the toner rearrangement by the electrode from which the toner contamination is removed.
摘要翻译：图像形成装置包括：图像载体; 潜像形成装置; 显影装置; 面向图像载体的电极; 电源，用于检测调色剂污染到电极上的调色剂污染检测装置; 用于清洁电极的电极清洁装置; 和控制部分。控制部分控制电源至少向电极施加交流电压，使得通过在图像载体和电极控制部分之间往复移动调色剂图像的调色剂来重新排列调色剂图像，并允许电极清洁装置清洁当调色剂污染检测装置检测到电极上的调色剂污染并且通过去除调色剂污染的电极执行调色剂重排时，电极。

10. 发明申请

US20110058843A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20110058843A1
公开(公告)日：2011-03-10
申请号：US12877548
申请日：2010-09-08
申请人： Hiroshi Akita , Seiko Itagaki , Natsuko Minegishi , Hiroyuki Saito
发明人： Hiroshi Akita , Seiko Itagaki , Natsuko Minegishi , Hiroyuki Saito
IPC分类号： G03G21/00
CPC分类号： G03G15/169
摘要： An image forming apparatus includes: an image carrier; a latent image forming device; a developing device; an electrode which faces to the image carrier; an electric power source, a toner contamination detecting device for detecting toner contamination onto the electrode; an electrode cleaning device for cleaning the electrode; and a controlling section, wherein the control section controls the electric power source to apply at least an alternating current voltage to the electrode so that toner image is rearranged by reciprocally moving toner of the toner image between the image carrier and the electrode control section and allows the electrode cleaning device to clean the electrode when the toner contamination detecting device detects toner contamination on the electrode, and performs the toner rearrangement by the electrode from which the toner contamination is removed.
摘要翻译：图像形成装置包括：图像载体; 潜像形成装置; 显影装置; 面向图像载体的电极; 电源，用于检测调色剂污染到电极上的调色剂污染检测装置; 用于清洁电极的电极清洁装置; 以及控制部分，其中所述控制部分控制所述电源以向所述电极施加至少一个交流电压，使得通过在所述图像载体和所述电极控制部分之间往复移动调色剂图像的调色剂来重新排列调色剂图像，并允许所述电极清洁装置在所述调色剂污染检测装置检测到所述电极上的调色剂污染物时清洁所述电极，并且通过除去所述调色剂污染物的电极进行所述调色剂重排。

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