公开(公告)号：US07356289B2

公开(公告)日：2008-04-08

申请号：US11338919

申请日：2006-01-25

申请人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

发明人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

IPC分类号： G03G15/08 ,  G03G15/06

CPC分类号： G03G15/065

摘要： An image forming apparatus includes: a developing device which applies a developing bias voltage obtained by superimposing an AC bias voltage onto a DC bias voltage to a photoreceptor, and develops a latent image on the photoreceptor with a developer to form a toner image. The apparatus has a toner forced discharge mode for forming a toner image for forced discharge in a first image formation area provided in a non-image formation area other than a second image formation area on the photoreceptor to forcibly discharge a toner from the developing device. When the mode is selected, an AC bias voltage at a frequency lower than that in the second image formation area is applied to the first image formation area to develop a latent image for forced discharge, to form a toner image, and a toner of the toner image is collected by a cleaning device.

摘要翻译： 图像形成装置包括：显影装置，其将通过将AC偏置电压叠加到DC偏置电压获得的显影偏压施加到感光体，并用显影剂在感光体上显影潜像以形成调色剂图像。 该设备具有调色剂强制放电模式，用于在设置在除感光体上的第二图像形成区域之外的非图像形成区域中的第一图像形成区域中形成用于强制放电的调色剂图像，以强制地从显影装置排出调色剂。 当选择模式时，将低于第二图像形成区域中的频率的AC偏置电压施加到第一图像形成区域以显影用于强制放电的潜像，以形成调色剂图像，并且调色剂 调色剂图像由清洁装置收集。

公开(公告)号：US20060198644A1

公开(公告)日：2006-09-07

申请号：US11303542

申请日：2005-12-16

申请人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

发明人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

IPC分类号： G03G15/00 ,  G03G15/08

CPC分类号： G03G15/5033 ,  G03G15/0868 ,  G03G15/0875

摘要： An image forming apparatus includes: an image carrying member; a latent image forming unit to form an electrostatic latent image on the image carrying member; a developing unit to develop the electrostatic latent image on the image carrying member to form a toner image; a forcible discharge unit to forcibly discharge the toner from the developing unit; a toner supplying unit to supply toner by the discharged quantity; and a fog-detection unit to detect fog of the image, wherein the forcible discharge unit forcibly discharges the toner from the developing unit based on a detected result of the fog-detection unit.

摘要翻译： 图像形成装置包括：图像承载构件; 潜像形成单元，用于在所述图像承载构件上形成静电潜像; 显影单元，用于显影图像承载构件上的静电潜像以形成调色剂图像; 强制排出单元，用于强制地从显影单元排出调色剂; 调色剂供应单元，用于通过排出量供应调色剂; 以及雾检测单元，用于检测图像的灰雾，其中强制放电单元基于雾化检测单元的检测结果强制地从显影单元排出调色剂。

公开(公告)号：US20060228125A1

公开(公告)日：2006-10-12

申请号：US11338919

申请日：2006-01-25

申请人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

发明人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

IPC分类号： G03G15/06 ,  G03G15/08

CPC分类号： G03G15/065

摘要： An image forming apparatus includes: a developing device which applies a developing bias voltage obtained by superimposing an AC bias voltage onto a DC bias voltage to a photoreceptor, and develops a latent image on the photoreceptor with a developer to form a toner image. The apparatus has a toner forced discharge mode for forming a toner image for forced discharge in a first image formation area provided in a non-image formation area other than a second image formation area on the photoreceptor to forcibly discharge a toner from the developing device. When the mode is selected, an AC bias voltage at a frequency lower than that in the second image formation area is applied to the first image formation area to develop a latent image for forced discharge, to form a toner image, and a toner of the toner image is collected by a cleaning device.

摘要翻译： 图像形成装置包括：显影装置，其将通过将AC偏置电压叠加到DC偏置电压获得的显影偏压施加到感光体，并用显影剂在感光体上显影潜像以形成调色剂图像。 该设备具有调色剂强制放电模式，用于在设置在除感光体上的第二图像形成区域之外的非图像形成区域中的第一图像形成区域中形成用于强制放电的调色剂图像，以强制地从显影装置排出调色剂。 当选择模式时，将低于第二图像形成区域中的频率的AC偏置电压施加到第一图像形成区域以显影用于强制放电的潜像，以形成调色剂图像，并且调色剂 调色剂图像由清洁装置收集。

公开(公告)号：US20060177234A1

公开(公告)日：2006-08-10

申请号：US11300558

申请日：2005-12-13

申请人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

发明人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

IPC分类号： G03G15/09

CPC分类号： G03G15/0813 ,  G03G15/065 ,  G03G15/75

摘要： An image forming apparatus includes: an image carrying body; a latent image forming unit to form an electrostatic latent image on the image carrying body; a developing unit to develop the electrostatic latent image on the image carrying body to form a toner image, the developing unit including a developing agent carrying body to carry a developing agent in a development region, and a direct-current power supply and an alternating-current power supply, both applying a developing bias voltage to the developing agent carrying body, the developing bias voltage generated by superimposing a direct-current voltage to an alternating voltage; a printing rate detecting unit to detect a printing rate; and a control unit to control the alternating-current power supply, wherein the control unit controls an output of the alternating-current power supply based on a detection result of the printing rate detecting unit.

摘要翻译： 图像形成装置包括：图像承载体; 潜像形成单元，用于在图像载体上形成静电潜像; 显影单元，用于在图像承载体上显影静电潜像以形成调色剂图像，显影单元包括显影剂携带体，用于在显影区域中携带显影剂，以及直流电源和交流电源， 将显影偏压施加到显影剂载体上的当前电源，通过将直流电压叠加到交流电压而产生的显影偏压; 打印率检测单元，用于检测打印速度; 以及控制单元，用于控制交流电源，其中所述控制单元基于所述打印率检测单元的检测结果来控制所述交流电源的输出。

公开(公告)号：US20060133857A1

公开(公告)日：2006-06-22

申请号：US11282146

申请日：2005-11-18

申请人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

发明人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

IPC分类号： G03G15/09

CPC分类号： G03G15/0928 ,  G03G2215/0634

摘要： There is described an image forming apparatus for forming a high-density image by using the reversal developing method and suppressing an occurrence of irregularities. The apparatus includes an image bearing member, a latent image forming device to form an electrostatic latent image, a magnetic field generating device to generate a magnetic field and a developing device to develop the electrostatic latent image so as to form a toner image on the image bearing member. At a developing region, the developer bearing member moves in a direction opposite to a moving direction of the image bearing member and the magnetic field generating device has a developing pole to form a magnetic blush for developing the electrostatic latent image. Further, an outer diameter R (mm) of the developer bearing member and a magnetic flux density Br1 (mT) of the developing pole fulfill the relationship of Br1≧R×4.5.

摘要翻译： 描述了通过使用反转显影方法形成高密度图像并抑制不规则的发生的图像形成装置。 该装置包括图像承载部件，用于形成静电潜像的潜像形成装置，用于产生磁场的磁场产生装置和显影装置以显影静电潜像，以便在图像上形成调色剂图像 轴承构件。 在显影区域，显影剂承载构件沿与图像承载构件的移动方向相反的方向移动，并且磁场产生装置具有显影极以形成用于显影静电潜像的磁腮红。 此外，显影剂承载部件的外径R（mm）和显影极的磁通密度Br1（mT）满足Br1> = Rx4.5的关系。

公开(公告)号：US07512351B2

公开(公告)日：2009-03-31

申请号：US11300558

申请日：2005-12-13

申请人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

发明人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

IPC分类号： G03G15/06

CPC分类号： G03G15/0813 ,  G03G15/065 ,  G03G15/75

摘要： An image forming apparatus includes: an image carrying body; a latent image forming unit to form an electrostatic latent image on the image carrying body; a developing unit to develop the electrostatic latent image on the image carrying body to form a toner image, the developing unit including a developing agent carrying body to carry a developing agent in a development region, and a direct-current power supply and an alternating-current power supply, both applying a developing bias voltage to the developing agent carrying body, the developing bias voltage generated by superimposing a direct-current voltage to an alternating voltage; a printing rate detecting unit to detect a printing rate; and a control unit to control the alternating-current power supply, wherein the control unit controls an output of the alternating-current power supply based on a detection result of the printing rate detecting unit.

摘要翻译： 图像形成装置包括：图像承载体; 潜像形成单元，用于在图像载体上形成静电潜像; 显影单元，用于在图像承载体上显影静电潜像以形成调色剂图像，显影单元包括显影剂携带体，用于在显影区域中携带显影剂，以及直流电源和交流电源， 将显影偏压施加到显影剂载体上的当前电源，通过将直流电压叠加到交流电压而产生的显影偏压; 打印率检测单元，用于检测打印速度; 以及控制单元，用于控制交流电源，其中所述控制单元基于所述打印率检测单元的检测结果来控制所述交流电源的输出。

公开(公告)号：US07362990B2

公开(公告)日：2008-04-22

申请号：US11282146

申请日：2005-11-18

申请人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

发明人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

IPC分类号： G03G15/09

CPC分类号： G03G15/0928 ,  G03G2215/0634

摘要： There is described an image forming apparatus for forming a high-density image by using the reversal developing method and suppressing an occurrence of irregularities. The apparatus includes an image bearing member, a latent image forming device to form an electrostatic latent image, a magnetic field generating device to generate a magnetic field and a developing device to develop the electrostatic latent image so as to form a toner image on the image bearing member. At a developing region, the developer bearing member moves in a direction opposite to a moving direction of the image bearing member and the magnetic field generating device has a developing pole to form a magnetic brush for developing the electrostatic latent image. Further, an outer diameter R (mm) of the developer bearing member and a magnetic flux density Br1 (mT) of the developing pole fulfill the relationship of Br1≧R×4.5.

摘要翻译： 描述了通过使用反转显影方法形成高密度图像并抑制不规则的发生的图像形成装置。 该装置包括图像承载部件，用于形成静电潜像的潜像形成装置，用于产生磁场的磁场产生装置和显影装置以显影静电潜像，以便在图像上形成调色剂图像 轴承构件。 在显影区域，显影剂承载构件沿与图像承载构件的移动方向相反的方向移动，并且磁场产生装置具有显影极，以形成用于显影静电潜像的磁刷。 此外，显影剂承载部件的外径R（mm）和显影极的磁通密度Br 1（mT）满足Br 1> = Rx4.5的关系。

公开(公告)号：US07340189B2

公开(公告)日：2008-03-04

申请号：US11303542

申请日：2005-12-16

申请人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

发明人： Seiko Itagaki ,  Hiroshi Akita ,  Isamu Miura

IPC分类号： G03G15/08 ,  G03G15/00

CPC分类号： G03G15/5033 ,  G03G15/0868 ,  G03G15/0875

摘要： An image forming apparatus includes: an image carrying member; a latent image forming unit to form an electrostatic latent image on the image carrying member; a developing unit to develop the electrostatic latent image on the image carrying member to form a toner image; a forcible discharge unit to forcibly discharge the toner from the developing unit; a toner supplying unit to supply toner by the discharged quantity; and a fog-detection unit to detect fog of the image, wherein the forcible discharge unit forcibly discharges the toner from the developing unit based on a detected result of the fog-detection unit.

摘要翻译： 图像形成装置包括：图像承载构件; 潜像形成单元，用于在所述图像承载构件上形成静电潜像; 显影单元，用于显影图像承载构件上的静电潜像以形成调色剂图像; 强制排出单元，强制地从显影单元排出调色剂; 调色剂供应单元，用于通过排出量供应调色剂; 以及雾检测单元，用于检测图像的灰雾，其中强制放电单元基于雾化检测单元的检测结果强制地从显影单元排出调色剂。

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。

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。