公开(公告)号：US5283615A

公开(公告)日：1994-02-01

申请号：US595570

申请日：1990-10-11

申请人： Tomoaki Yokoyama ,  Tateki Oka ,  Kunio Toda

发明人： Tomoaki Yokoyama ,  Tateki Oka ,  Kunio Toda

IPC分类号： G03G15/01 ,  G03G15/08 ,  G03G15/06

CPC分类号： B82Y15/00 ,  G03G15/0126 ,  G03G15/0887

摘要： An image forming apparatus is provided with an optical system for forming a first electrostatic latent image and a second electrostatic latent image on a rotatable photosensitive member, a first developing device accommodating a first developer for developing the first electrostatic latent image, and a second developing device accommodating a second developer for developing the second electrostatic latent image. The second developing device is located downstream from the first developing device in a direction of rotation of the photosensitive member and is provided with a developing roller having a magnetic force. The second developer differs in color from the first developer and has a magnetism greater than the first developer. The second developer is transported to the second electrostatic latent image along a periphery of the developing roller. The image forming apparatus is further provided with a collector provided in the second developing device and having a collecting member confronting the developing roller. The first developer mixed in the second developer is moved toward and collected by the collecting member under the influence of an electric field formed between the collecting member and developing roller. Alternatively, the photosensitive member can act as a collector for collecting first developer mixed in the second developer.

摘要翻译： 图像形成装置设置有用于在可旋转感光构件上形成第一静电潜像和第二静电潜像的光学系统，容纳用于显影第一静电潜像的第一显影剂的第一显影装置和第二显影装置 容纳用于显影第二静电潜像的第二显影剂。 第二显影装置沿着感光构件的旋转方向位于第一显影装置的下游，并且设置有具有磁力的显影辊。 第二显影剂的颜色与第一显影剂不同，并且具有大于第一显影剂的磁性。 第二显影剂沿着显影辊的周边输送到第二静电潜像。 图像形成装置还设置有设置在第二显影装置中并具有面对显影辊的收集构件的收集器。 混合在第二显影剂中的第一显影剂在收集构件和显影辊之间形成的电场的影响下移动并被收集构件收集。 或者，感光构件可以用作收集器，用于收集混合在第二显影剂中的第一显影剂。

公开(公告)号：US5122843A

公开(公告)日：1992-06-16

申请号：US654805

申请日：1991-02-13

申请人： Tomoaki Yokoyama ,  Tateki Oka ,  Kunio Toda

发明人： Tomoaki Yokoyama ,  Tateki Oka ,  Kunio Toda

IPC分类号： G03G9/08 ,  G03G13/01

CPC分类号： G03G13/013 ,  G03G9/0819

摘要： An image forming apparatus includes an image support member; a first electrostatic latent image forming device for forming a first electrostatic latent image on the image support member; a first developing device for developing the first electrostatic latent image with first toner; a second electrostatic latent image forming device for forming a second electrostatic latent image on the image support member; and a second developing device for developing the second electrostatic latent image with second toner; the second toner having a color different from that of the first toner and having charging characteristics relative to carrier, identical with those of the first toner; the second toner having an average particle diameter larger than that of the first toner.

摘要翻译： 图像形成装置包括：图像支撑部件; 用于在图像支持部件上形成第一静电潜像的第一静电潜像形成装置; 用于用第一调色剂显影第一静电潜像的第一显影装置; 第二静电潜像形成装置，用于在图像支撑构件上形成第二静电潜像; 以及用第二调色剂显影第二静电潜像的第二显影装置; 所述第二调色剂具有与所述第一调色剂不同的颜色，并且具有与所述第一调色剂相同的带电特性; 所述第二调色剂的平均粒径大于所述第一调色剂的平均粒径。

公开(公告)号：US5036369A

公开(公告)日：1991-07-30

申请号：US372817

申请日：1989-06-29

申请人： Kunio Toda ,  Tomoaki Yokoyama ,  Taisuke Nagao

发明人： Kunio Toda ,  Tomoaki Yokoyama ,  Taisuke Nagao

IPC分类号： G03G15/09 ,  G03G21/10

CPC分类号： G03G15/09 ,  G03G21/105

摘要： An image forming apparatus includes a photosensitive member rotatably supported; an upstream developing device, in a rotary direction of the member, for developing an electrostatic latent image corresponding to a solid image and/or a literal image with an accommodated developer therein; a downstream developing device, in the direction thereof, for developing an electrostatic latent image corresponding to a line image with an accommodated developer in the same color as that in the upstream developing device; a cleaning device for collecting the developer remained on the surface of the member; and a developer transporting device for transporting the developer collected by the cleaning device to the upstream developing device. The apparatus further includes a charging device for charging a specified zone of the surface of the member; an image forming device for forming the latent image on the charged specified zone thereof; a voltage changing device for selecting one of a first developing bias voltage and a second developing bias voltage which is higher than the first developing bias voltage; and a control device for controlling the voltage changing device. By the control device, the first developing bias voltage is applied to the upstream developing device while the latent image on the specified zone of the member passes through a developing region of the upstream developing device and the second developing bias voltage is applied thereto while the specified zone passes therethrough again after the latent image passes therethrough.

摘要翻译： 图像形成装置包括可旋转地支撑的感光构件; 在所述构件的旋转方向上的上游显影装置，用于将对应于固体图像和/或文字图像的静电潜像与其中容纳的显影剂进行显影; 下游显影装置沿着其方向，以与上游显影装置中相同的颜色显影具有与容纳的显影剂相对应的线图像的静电潜像; 用于收集显影剂的清洁装置残留在构件的表面上; 以及用于将由清洁装置收集的显影剂输送到上游显影装置的显影剂输送装置。 该装置还包括用于对构件的表面的指定区域进行充电的充电装置; 用于在其带电的指定区域上形成潜像的图像形成装置; 用于选择高于第一显影偏压的第一显影偏压和第二显像偏压之一的电压改变装置; 以及用于控制电压变化装置的控制装置。 通过控制装置，第一显影偏压被施加到上游显影装置，同时构件的指定区域上的潜像通过上游显影装置的显影区域，并且施加第二显影偏压，同时指定 在潜像通过之后，区域再次通过。

公开(公告)号：US4924270A

公开(公告)日：1990-05-08

申请号：US263415

申请日：1988-10-27

申请人： Mineyuki Sako ,  Tateki Oka ,  Yasuyuki Hiromoto ,  Tomoaki Yokoyama ,  Kunio Toda

发明人： Mineyuki Sako ,  Tateki Oka ,  Yasuyuki Hiromoto ,  Tomoaki Yokoyama ,  Kunio Toda

IPC分类号： G03G15/08

CPC分类号： G03G15/0877 ,  G03G15/0849

摘要： A toner supply device including a hopper for containing the toner; a toner supply roller rotatably disposed below the hopper so as to fill an opening formed in a lower section of the hopper; a charging blade which is disposed so as to be in close contact under pressure with the toner supply roller to electrically charge the toner which is transported on the toner supply roller; a toner scraping mechanism having a toner scraping blade arranged at a position located downstream to the charging blade with respect to a rotational direction of the toner supply; a sensor for detecting the toner density; and a control unit for controlling the toner scraping mechanism depending on signals from the sensor so as to make the toner scraping blade move to one of a first position at which it comes in close contact under pressure with the toner supply roller and a second position at which the blade stands apart from the toner supply roller.When the toner supply roller is driven, a charged toner layer is formed on the peripheral surface of the roller by the charging blade. And the toner scraping blade is positioned at the first position by the control unit in the case of a low density of the toner, so that the charged toner layer thereon may be scraped off to be supplied to the developing device.

摘要翻译： 一种调色剂供应装置，包括用于容纳调色剂的料斗; 调色剂供给辊，其可旋转地设置在所述料斗下方，以填充形成在所述料斗的下部中的开口; 充电刮板，其设置成在压力下与调色剂供给辊紧密接触，对在调色剂供给辊上传送的调色剂进行充电; 调色剂刮除机构，其具有布置在相对于调色剂供应的旋转方向位于充电刮板下游的位置的调色剂刮片; 用于检测调色剂浓度的传感器; 以及控制单元，用于根据来自传感器的信号来控制调色剂刮除机构，从而使调色剂刮刀移动到与调色剂供应辊在压力下紧密接触的第一位置和第二位置 刀片与调色剂供应辊分离。 当驱动调色剂供应辊时，通过充电刮板在辊的圆周表面上形成带电的调色剂层。 在调色剂的密度低的情况下，调色剂刮刀在控制单元处于第一位置，从而可以将其上的带电调色剂层刮下来供给显影装置。

公开(公告)号：US20110170912A1

公开(公告)日：2011-07-14

申请号：US13119683

申请日：2009-09-04

申请人： Toshihide Taniguchi ,  Kunio Toda ,  Ikuo Ichino ,  Shigehisa Nakayama ,  Kenichi Wada ,  Shouji Imaizumi ,  Kenzo Toya ,  Hiroshi Ozawa

发明人： Toshihide Taniguchi ,  Kunio Toda ,  Ikuo Ichino ,  Shigehisa Nakayama ,  Kenichi Wada ,  Shouji Imaizumi ,  Kenzo Toya ,  Hiroshi Ozawa

IPC分类号： G03G15/08

CPC分类号： G03G15/0898 ,  G03G15/0875 ,  G03G15/0882 ,  G03G15/0884 ,  G03G15/0894

摘要： The present invention provides a toner cartridge and its recycling method in which a clearance due to stack of the housing and the lid can reliably be sealed so that toner leakage can be prevented. A toner cartridge which is set in an image forming apparatus to feed toner to the image forming apparatus includes a housing having a toner containing portion for containing toner therein, and a lid for covering the toner containing portion of the housing. A stack portion where the housing and the lid are stacked on each other is sealed by a sealing member having first and second adhesive materials provided on both-side surfaces of a base material with the first adhesive material stuck on an outer peripheral surface of the stack portion and with a release paper stuck on the second adhesive material.

摘要翻译： 本发明提供了一种调色剂盒及其回收方法，其中由于壳体和盖子的堆叠而产生的间隙可以可靠地被密封，从而可以防止调色剂泄漏。 设置在图像形成装置中以向图像形成装置供给调色剂的调色剂盒包括具有用于容纳调色剂的调色剂容纳部分的壳体和用于覆盖壳体的调色剂容纳部分的盖子。 壳体和盖子彼此堆叠的堆叠部分由密封构件密封，该密封构件具有设置在基材的两侧表面上的第一和第二粘合材料，第一粘合材料粘附在堆叠的外周表面上 并且将剥离纸粘贴在第二粘合材料上。

公开(公告)号：US5038176A

公开(公告)日：1991-08-06

申请号：US362091

申请日：1989-06-06

申请人： Tomoaki Yokoyama ,  Kunio Toda ,  Taisuke Nagao

发明人： Tomoaki Yokoyama ,  Kunio Toda ,  Taisuke Nagao

IPC分类号： G03G13/09 ,  G03G15/01 ,  G03G15/09

CPC分类号： G03G13/09 ,  G03G15/0126 ,  G03G15/09

摘要： An image forming apparatus having plural developing devices, comprising: a photosensitive member arranged rotatably in one direction and holding an electrostatic latent image corresponding to an original image; a developing sleeve rotatably arranged in each developing device at a position confronting said photosensitive member to transport a developer; a device for simultaneously driving for rotation of each of said developing sleeves in said developing devices; and an adjusting mechanism for adjusting operation of said developing devices so that in a region where said developing sleeves confront with said photosensitive member, a developer packaged density (F) in said developing device arranged at an upstream side in a rotational direction of said member is larger than that of said developing device arranged at a downstream side in the rotational direction of said member, which isF=Vd/Ds,where Vd is an amount of the developer passing between said developing sleeve and said photosensitive member per hour, and Ds is a distance between said developing sleeve of said developing device and said photosensitive member. Then, a high quality image may be reproduced by the apparatus, which has improved reproducibility RSI of density of a reproduced solid obtained by the upstream device and improved reproducibility RLI of density of a reproduced line image obtained by the downstream device.

摘要翻译： 一种具有多个显影装置的图像形成装置，包括：感光部件，其沿一个方向可旋转地布置并保持与原始图像相对应的静电潜像; 显影套筒，其可旋转地布置在每个显影装置的面对所述感光构件的位置以运输显影剂; 用于同时驱动所述显影装置中每个所述显影套筒旋转的装置; 以及用于调节所述显影装置的操作的调节机构，使得在所述显影套筒与所述感光构件相对的区域中，所述显影装置中的显影剂封装密度（F）设置在所述构件的旋转方向的上游侧， 大于设置在所述构件的旋转方向的下游侧的所述显影装置的F = Vd / Ds，其中Vd是每小时在显影套筒和感光构件之间通过的显影剂的量，Ds 是所述显影装置的所述显影套筒和所述感光构件之间的距离。 然后，可以通过该装置再现高质量图像，该装置具有改善由上游装置获得的再现固体的密度的再现性RSI，并提高由下游装置获得的再现行图像的浓度的再现性RLI。

公开(公告)号：US4954843A

公开(公告)日：1990-09-04

申请号：US355690

申请日：1989-05-23

申请人： Tateki Oka ,  Naoki Toyoshi ,  Kunio Toda

发明人： Tateki Oka ,  Naoki Toyoshi ,  Kunio Toda

IPC分类号： G03G15/045 ,  G03G15/06 ,  G03G15/08

CPC分类号： G03G15/065 ,  G03G15/045 ,  G03G15/08

摘要： An image forming apparatus wherein a photosensitive layer arranged to rotate in one direction is charged by a charger, and a negative electrostatic latent image is formed thereon by an exposure unit and then is subjected to reversal development by a developing device so that a positive noticeable image can be attained. The apparatus has a scorotoron charger for charging the negative latent image which has just been formed by the exposure unit with the opposite polarity thereof. A grid of the scorotoron charger is constituted to be impressed with a voltage with the same polarity as the latent image and a value lower than that of the surface potential, and by the scorotoron charger, the potential of the non-imaged portions of the latent image is lowered around the grid voltage. Further, the developing device is constituted to be impressed with a developing bias voltage with the same polarity as the latent image and a value lower than that of the surface potential but higher than a developing threshold value, whereby toner charged with the same polarity as that charged by the charger sticks to the imaged portions with potential lower than the developing bias voltage, resulting in a positive toner image with sharp line widths.

摘要翻译： 一种图像形成装置，其中设置成沿一个方向旋转的感光层由充电器充电，并且通过曝光单元在其上形成负静电潜像，然后通过显影装置进行反转显影，使得显着的图像 可以实现。 该装置具有用于对刚刚由曝光单元形成的与其相反极性的负潜像进行充电的刮栅式充电器。 电磁充电器的栅格被构造成具有与潜像极性相同的电压和低于表面电位的电压的电压，并且由驱动器充电器施加潜在的非成像部分的电位 图像在电网电压附近降低。 此外，显影装置被构造成具有与潜像极性相同的显影偏压并且低于表面电位的显影偏压，但高于显影阈值，由此调色剂具有与该极性相同的极性 由充电器充电的电极粘附到具有低于显影偏置电压的成像部分，导致具有尖锐线宽的正色调剂图像。