公开(公告)号：US5940661A

公开(公告)日：1999-08-17

申请号：US22472

申请日：1998-02-12

申请人： Masataka Yagi ,  Tamotsu Sakuraba ,  Tetsumaru Fujita ,  Narutaka Yoshida ,  Akira Hirota ,  Tsugihito Yoshiyama ,  Masami Matsuura ,  Yasuhiro Nakagami ,  Masayasu Haga

发明人： Masataka Yagi ,  Tamotsu Sakuraba ,  Tetsumaru Fujita ,  Narutaka Yoshida ,  Akira Hirota ,  Tsugihito Yoshiyama ,  Masami Matsuura ,  Yasuhiro Nakagami ,  Masayasu Haga

IPC分类号： G03G15/02 ,  G03G21/00

CPC分类号： G03G15/0216 ,  G03G15/025 ,  G03G21/0064 ,  G03G2215/023 ,  G03G2221/0005

摘要： An image forming apparatus with a charging member that allows easy removal of smears from an image forming drum. The apparatus removes smears from the image forming drum by placing a different portion of the charging member in contact with the drum. The apparatus uses a cam or a solenoid to press on the charging member to cause a different portion of the charging member to come into contact with the image forming drum.

摘要翻译： 一种具有充电部件的图像形成装置，其允许容易地从成像鼓中去除污点。 该装置通过将充电构件的不同部分与滚筒接触来从图像形成滚筒中去除污迹。 该装置使用凸轮或螺线管按压充电构件，使充电构件的不同部分与图像形成鼓接触。

公开(公告)号：US5911097A

公开(公告)日：1999-06-08

申请号：US42670

申请日：1998-03-17

申请人： Masayasu Haga ,  Tsugihito Yoshiyama ,  Yasuhiro Nakagami ,  Masami Matsuura ,  Akira Hirota

发明人： Masayasu Haga ,  Tsugihito Yoshiyama ,  Yasuhiro Nakagami ,  Masami Matsuura ,  Akira Hirota

IPC分类号： G03G15/02 ,  G03G21/00

CPC分类号： G03G15/0266 ,  G03G15/0291 ,  G03G2215/021 ,  Y10S430/102

摘要： Applied voltage to the contact charging sheet 71 has been controlled in the following various ways: a) the voltage at the photosensitive layer 10 at a point of time whereat it has passed the contact charging sheet 71 is caused to interlock with grid voltage so as not to exceed predetermined voltage to be electrified by the Scorotron charger 2; b) the applied voltage is caused to interlock with the output from the transfer unit 5 so that there is no portion which reaches the Scorotron charger 2 while the potential polarity has been reversed at the transfer unit 5; c) reduction in the film thickness of the photosensitive layer 10 is corrected in consideration of the cumulative number of sheets for image formation; d) the size of printing sheet is added; e) at the time of termination, a portion of the photosensitive layer 10, into which current has flowed at the transfer unit 5, is caused to stop always after passing the contact charging sheet 71; f) the contact charging sheet 71 is cleaned by means of AC component; and g) the applied voltage is switched while formation of an electrostatic latent image and the like are not performed. Thereby, the surface potential at the photosensitive drum 1 is prevented from becoming ununiform.

摘要翻译： 接触充电片71的施加电压已经以下列各种方式进行了控制：a）使感光层10在已经通过接触充电片71的时间点处的电压与电网电压互锁，使得不 超过预定电压由Scorotron充电器2带电; b）使施加的电压与转印单元5的输出互锁，使得在转印单元5处的电位极性已经反转的情况下，没有到达Scorotron充电器2的部分; c）考虑到用于图像形成的片材的累积数量来校正感光层10的膜厚度的减小; d）添加打印纸的尺寸; e）在终止时，使电流在转印单元5处流动的感光层10的一部分在通过接触充电片71之后始终停止; f）接触充电片71通过AC部件清洁; 并且g）在不形成静电潜像等的情况下切换所施加的电压。 由此，能够防止感光鼓1的表面电位变得不均匀。

公开(公告)号：US5159388A

公开(公告)日：1992-10-27

申请号：US720938

申请日：1991-06-25

申请人： Tsugihito Yoshiyama ,  Hiroshi Okamoto ,  Moriyoshi Matsushiro ,  Masataka Oda ,  Masayasu Haga

发明人： Tsugihito Yoshiyama ,  Hiroshi Okamoto ,  Moriyoshi Matsushiro ,  Masataka Oda ,  Masayasu Haga

IPC分类号： G03G15/02 ,  G03G15/00 ,  G03G15/043 ,  G03G15/06 ,  G03G21/00

CPC分类号： G03G15/75 ,  G03G15/043 ,  G03G15/065

摘要： An image forming apparatus comprising a charging section for uniformly charging a surface of a photoconductive body; an image forming section for forming an image on the photoconductive body charged by the charging section; a detecting section for detecting an influx current flowing to the photoconductive body when the photoconductive body is charged by the charging section; and a control section for controlling the image forming section so as to stabilize a quality of images formed by the image forming section.

摘要翻译： 一种图像形成装置，包括用于对光电导体的表面均匀充电的充电部分; 图像形成部，用于在由充电部充电的感光体上形成图像; 检测部，其检测当所述光电导体被所述充电部充电时流向所述光电导体的流入电流; 以及控制部分，用于控制图像形成部分，以便稳定由图像形成部分形成的图像的质量。

公开(公告)号：US08639167B2

公开(公告)日：2014-01-28

申请号：US13173928

申请日：2011-06-30

申请人： Kanji Nakayama ,  Masayasu Haga ,  Tomohisa Yoshida ,  Wataru Onoda ,  Yoshiyuki Iguchi ,  Noboru Ito

发明人： Kanji Nakayama ,  Masayasu Haga ,  Tomohisa Yoshida ,  Wataru Onoda ,  Yoshiyuki Iguchi ,  Noboru Ito

IPC分类号： G03G15/095 ,  G03G15/08

CPC分类号： G03G15/081 ,  G03G15/0812 ,  G03G15/09

摘要： A two-component developing device using a developer containing toner and magnetic carrier particles. The developing device comprises a housing, a developing roller, a magnetic field generator mounted inside the developing roller, and a developer restricting member, and further comprises a developer guide member providing a developer guide path for guiding the developer to the developer amount restricting clearance, providing a developer circulation path for circulating the developer to an upstream end of the guide member, and providing a communication path for bringing the developer guide path into communication with the developer circulation path, an upstream end of the guide member being positioned above the position of a peak of magnetic flux density of the magnetic pole of the magnetic field generator which is closest to a low-magnetic force area downstream of the low-magnetic force area or positioned upstream of such a position and downstream of the low-magnetic force area. An image forming device in which such a two-component developing device is employed as at least one developing device.

摘要翻译： 一种使用含有调色剂和磁性载体颗粒的显影剂的双组分显影装置。 显影装置包括壳体，显影辊，安装在显影辊内部的磁场发生器和显影剂限制构件，并且还包括显影剂引导构件，显影剂引导构件提供用于将显影剂引导至显影剂量限制间隙的显影剂引导路径， 提供用于使显影剂循环到引导构件的上游端的显影剂循环路径，并且提供用于使显影剂引导路径与显影剂循环路径连通的连通路径，引导构件的上游端位于 磁场发生器的磁极的磁通密度的峰值最靠近低磁力区域下游的低磁力区域或者位于低磁力区域的这个位置的下游。 使用这种双组分显影装置作为至少一个显影装置的图像形成装置。

公开(公告)号：US20120177416A1

公开(公告)日：2012-07-12

申请号：US13344022

申请日：2012-01-05

申请人： Kanji NAKAYAMA ,  Masayasu Haga ,  Tomohisa Yoshida ,  Wataru Onoda ,  Narutaka Yoshida ,  Noboru Ito

发明人： Kanji NAKAYAMA ,  Masayasu Haga ,  Tomohisa Yoshida ,  Wataru Onoda ,  Narutaka Yoshida ,  Noboru Ito

IPC分类号： G03G15/08

CPC分类号： G03G15/0907 ,  G03G15/0928

摘要： An image forming apparatus, wherein the packing density at a closest point where the first peripheral surface and the second peripheral surface are the closest to each other is within a range from 0.3 to 0.4; wherein a maximum magnetic flux density of a principal magnetic pole for generating the magnetic field for development is located in an upstream side from the closest point with respect to the specified direction and at a point where the packing density is equal to or greater than 0.2; and wherein a magnetic flux density of the principal magnetic pole at a point where the packing density is 0.2 in a downstream side from the closest point with respect to the specified direction is equal to or less than ½ of a magnetic flux density of the principal magnetic pole at a point where the packing density is 0.2 in the upstream side.

摘要翻译： 一种图像形成装置，其中，所述第一周面和所述第二周面最接近的最靠近处的填充密度在0.3〜0.4的范围内; 其中用于产生用于显影的磁场的主磁极的最大磁通密度位于相对于指定方向的最近点的上游侧，并且在填充密度等于或大于0.2的点处; 并且其中，相对于规定方向从最近点起的下游侧的填充密度为0.2的点处的主磁极的磁通密度等于或小于主磁体的磁通密度的1/2 在上游侧的填充密度为0.2的点处。

公开(公告)号：US08693929B2

公开(公告)日：2014-04-08

申请号：US13343157

申请日：2012-01-04

申请人： Tomohisa Yoshida ,  Masayasu Haga ,  Kanji Nakayama ,  Wataru Onoda ,  Narutaka Yoshida ,  Noboru Ito

发明人： Tomohisa Yoshida ,  Masayasu Haga ,  Kanji Nakayama ,  Wataru Onoda ,  Narutaka Yoshida ,  Noboru Ito

IPC分类号： G03G15/08

CPC分类号： G03G15/0813 ,  G03G15/0896

摘要： An image forming apparatus for forming a toner image on a print medium with a developer composed of toner and carriers, wherein when the first distance is longer than the second distance, an average gap between the first peripheral surface and a member that faces to the first peripheral surface in an area with a length of the first distance extending upstream from the closest point with respect to the specified direction is smaller than an average gap between the first peripheral surface and a member that faces to the first peripheral surface in an area with a length of the first distance extending downstream from the closest point with respect to the specified direction.

摘要翻译： 一种图像形成装置，用于在具有由调色剂和载体构成的显影剂的打印介质上形成调色剂图像，其中当所述第一距离长于所述第二距离时，所述第一外围表面和面向所述第一距离的构件之间的平均间隙 在相对于指定方向从最近点延伸上游的第一距离的长度的区域中的周边表面小于在第一周边表面和面向第一周边表面的部件之间的平均间隙 从相对于指定方向的最近点延伸下游的第一距离的长度。

公开(公告)号：US20120003014A1

公开(公告)日：2012-01-05

申请号：US13173928

申请日：2011-06-30

申请人： Kanji NAKAYAMA ,  Masayasu Haga ,  Tomohisa Yoshida ,  Wataru Onoda ,  Yoshiyuki Iguchi ,  Noboru Ito

发明人： Kanji NAKAYAMA ,  Masayasu Haga ,  Tomohisa Yoshida ,  Wataru Onoda ,  Yoshiyuki Iguchi ,  Noboru Ito

IPC分类号： G03G15/09

CPC分类号： G03G15/081 ,  G03G15/0812 ,  G03G15/09

摘要： A two-component developing device using a developer containing toner and magnetic carrier particles. The developing device comprises a housing, a developing roller, a magnetic field generator mounted inside the developing roller, and a developer restricting member, and further comprises a developer guide member providing a developer guide path for guiding the developer to the developer amount restricting clearance, providing a developer circulation path for circulating the developer to an upstream end of the guide member, and providing a communication path for bringing the developer guide path into communication with the developer circulation path, an upstream end of the guide member being positioned above the position of a peak of magnetic flux density of the magnetic pole of the magnetic field generator which is closest to a low-magnetic force area downstream of the low-magnetic force area or positioned upstream of such a position and downstream of the low-magnetic force area. An image forming device in which such a two-component developing device is employed as at least one developing device.

摘要翻译： 一种使用含有调色剂和磁性载体颗粒的显影剂的双组分显影装置。 显影装置包括壳体，显影辊，安装在显影辊内部的磁场发生器和显影剂限制构件，并且还包括显影剂引导构件，显影剂引导构件提供用于将显影剂引导至显影剂量限制间隙的显影剂引导路径， 提供用于使显影剂循环到引导构件的上游端的显影剂循环路径，并且提供用于使显影剂引导路径与显影剂循环路径连通的连通路径，引导构件的上游端位于 磁场发生器的磁极的磁通密度的峰值最靠近低磁力区域下游的低磁力区域或者位于低磁力区域的这个位置的下游。 使用这种双组分显影装置作为至少一个显影装置的图像形成装置。

公开(公告)号：US08824938B2

公开(公告)日：2014-09-02

申请号：US13344022

申请日：2012-01-05

申请人： Kanji Nakayama ,  Masayasu Haga ,  Tomohisa Yoshida ,  Wataru Onoda ,  Narutaka Yoshida ,  Noboru Ito

发明人： Kanji Nakayama ,  Masayasu Haga ,  Tomohisa Yoshida ,  Wataru Onoda ,  Narutaka Yoshida ,  Noboru Ito

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0907 ,  G03G15/0928

摘要： An image forming apparatus, wherein the packing density at a closest point where the first peripheral surface and the second peripheral surface are the closest to each other is within a range from 0.3 to 0.4; wherein a maximum magnetic flux density of a principal magnetic pole for generating the magnetic field for development is located in an upstream side from the closest point with respect to the specified direction and at a point where the packing density is equal to or greater than 0.2; and wherein a magnetic flux density of the principal magnetic pole at a point where the packing density is 0.2 in a downstream side from the closest point with respect to the specified direction is equal to or less than ½ of a magnetic flux density of the principal magnetic pole at a point where the packing density is 0.2 in the upstream side.

摘要翻译： 一种图像形成装置，其中，所述第一周面和所述第二周面最接近的最靠近处的填充密度在0.3〜0.4的范围内; 其中用于产生用于显影的磁场的主磁极的最大磁通密度位于相对于指定方向的最近点的上游侧，并且在填充密度等于或大于0.2的点处; 并且其中，相对于规定方向从最近点起的下游侧的填充密度为0.2的点处的主磁极的磁通密度等于或小于主磁体的磁通密度的1/2 在上游侧的填充密度为0.2的点处。

公开(公告)号：US07149447B2

公开(公告)日：2006-12-12

申请号：US10854427

申请日：2004-05-27

申请人： Masayasu Haga

发明人： Masayasu Haga

IPC分类号： G03G15/02

CPC分类号： G03G15/0216

摘要： An image forming device is provided that is capable of easily preventing occurrence of stripe-like image noise that may be caused by intimate contact between a contact electrifying member and an image carrier even when an image forming operation is stopped for a while. In the image forming device having an electrifying roller in contact with a photoconductor, AC voltage is applied to the electrifying roller before the image carrier and the electrifying roller start rotating.

摘要翻译： 提供一种图像形成装置，其能够容易地防止即使在图像形成操作停止一段时间时也可能由接触充电构件和图像载体之间的紧密接触而引起的条纹图像噪声的发生。 在具有与光电导体接触的带电辊的图像形成装置中，在图像载体和充电辊开始旋转之前，将AC电压施加到充电辊。

公开(公告)号：US20120177415A1

公开(公告)日：2012-07-12

申请号：US13343157

申请日：2012-01-04

申请人： Tomohisa Yoshida ,  Masayasu Haga ,  Kanji Nakayama ,  Wataru Onoda ,  Narutaka Yoshida ,  Noboru Ito

发明人： Tomohisa Yoshida ,  Masayasu Haga ,  Kanji Nakayama ,  Wataru Onoda ,  Narutaka Yoshida ,  Noboru Ito

IPC分类号： G03G15/08

CPC分类号： G03G15/0813 ,  G03G15/0896

摘要： An image forming apparatus for forming a toner image on a print medium with a developer composed of toner and carriers, wherein when the first distance is longer than the second distance, an average gap between the first peripheral surface and a member that faces to the first peripheral surface in an area with a length of the first distance extending upstream from the closest point with respect to the specified direction is smaller than an average gap between the first peripheral surface and a member that faces to the first peripheral surface in an area with a length of the first distance extending downstream from the closest point with respect to the specified direction.

摘要翻译： 一种图像形成装置，用于在具有由调色剂和载体构成的显影剂的打印介质上形成调色剂图像，其中当所述第一距离长于所述第二距离时，所述第一周边表面和面向所述第一距离的构件之间的平均间隙 在相对于指定方向从最近点延伸上游的第一距离的长度的区域中的周边表面小于在第一周边表面和面向第一周边表面的部件之间的平均间隙 从相对于指定方向的最近点延伸下游的第一距离的长度。