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1. 发明授权

US5283615A Image forming apparatus having a plurality of developing devices 失效
标题翻译：具有多个显影装置的图像形成装置
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。

2. 发明授权

US5122843A Image forming apparatus having developing devices which use different size toner particles 失效
标题翻译：具有使用不同大小调色剂颗粒的开发设备的图像形成装置
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。

3. 发明授权

US4924270A Toner supply device for use in image forming apparatus 失效
标题翻译：用于图像形成装置的调色剂供给装置
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。

4. 发明授权

US4792775A Method for the formation of outline images corresponding to the peripheral outlines of document's images 失效
标题翻译：用于形成对应于文档图像的外围轮廓的轮廓图像的方法
公开(公告)号：US4792775A
公开(公告)日：1988-12-20
申请号：US16717
申请日：1987-02-19
申请人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama
发明人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama
IPC分类号： G03G13/045 , G03G13/22 , G03G15/00
CPC分类号： G03G13/22 , G03G13/045
摘要： A method for forming an outline of an image. By this method, at first, an electrostatic latent image bearing member is charged and then irradiated to form an electrostatic latent image. Thereafter, the irradiated member is re-charged with a scorotron charger while applying a voltage to the scorotron grid, the voltage being slightly lower than the surface potential of the image portion of the latent image, and being substantially higher than the background potential of the latent image and being of the same polarity as that of the charging. By this re-charging, the outline portion of the image is given lower potential than the other portion. Then, the outline portion of the image with the lower potential is developed by a reversal development by using a toner charged to a polarity the same as the polarity of charging of the latent image bearing member.
摘要翻译：一种用于形成图像的轮廓的方法。通过该方法，首先，对静电潜像承载部件进行充电，然后照射以形成静电潜像。此后，将照射部件用灰火焰充电器再次施加电压到栅极栅极，该电压略低于潜像的图像部分的表面电位，并且显着高于该潜像的背景电位具有与充电相同极性的潜像。通过这种再充电，图像的轮廓部分被赋予比其他部分更低的电位。然后，通过使用充电到与潜像承载部件的充电极性相同的极性的调色剂，通过反转显影来显现具有较低电位的图像的轮廓部分。

5. 发明授权

US4794062A Method for the formation of outline images corresponding to the peripheral outlines of document's images 失效
标题翻译：用于形成对应于文档图像的外围轮廓的轮廓图像的方法
公开(公告)号：US4794062A
公开(公告)日：1988-12-27
申请号：US16716
申请日：1987-02-19
申请人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama
发明人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama
IPC分类号： G03G13/22 , G03G15/04 , G03G15/045 , G03G13/02 , G03G21/00
CPC分类号： G03G15/045 , G03G13/22 , G03G15/04027 , Y10S430/102
摘要： A method for forming an outline of an image. In this method, at first, an electrostatic latent image bearing member is charged and then irradiated to a positive image to form an electrostatic latent image. Thereafter, the irradiated member is re-charged with a scorotron charger while applying a voltage to a grid, the voltage being lower than the surface potential of the image portion of the latent image, being slightly higher than the background potential of the latent image and being of the same polarity as that of the original charging. By this re-charging, the outline portion of the image is given higher potential than the other portion. Then, the outline portion of the image with higher potential is subjected to a normal development by using a toner charged to a polarity opposite to the polarity of the recharged portions.
摘要翻译：一种用于形成图像的轮廓的方法。在该方法中，首先，对静电潜像承载部件进行充电，然后照射到正像以形成静电潜像。此后，将照射的部件用栅极充电器重新充电，同时向栅格施加电压，电压低于潜像的图像部分的表面电位，稍高于潜像的背景电位，具有与原充电相同的极性。通过这种再充电，图像的轮廓部分被赋予比其他部分更高的电位。然后，通过使用充电至与再充电部分的极性相反的极性的调色剂，对具有较高电位的图像的轮廓部分进行正常显影。

6. 发明授权

US4912513A Developing apparatus with variable developing bias voltage 失效
标题翻译：具有可变显影偏压的显影装置
公开(公告)号：US4912513A
公开(公告)日：1990-03-27
申请号：US214644
申请日：1988-07-01
申请人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama
发明人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama
IPC分类号： G03G15/09
CPC分类号： G03G15/09 , G03G15/0907
摘要： A copying apparatus in which a developing bias voltage to be applied to a developing sleeve by a power source is changed to adjust the density of a reproduced image, while the electric potential difference between the developing sleeve and a toner supply roller is kept constant. As a result, a density of toner on the developing sleeve is kept constant. Therefore, a development is effected under the condition in which the density of the toner is constant, so that the tone of the image of an original document is reproduced in a desired density.
摘要翻译：在显影套筒和调色剂供给辊之间的电位差保持恒定的同时改变要通过电源施加到显影套筒的显影偏压被改变以调节再现图像的浓度的复印设备。结果，显影套筒上的调色剂密度保持恒定。因此，在调色剂的浓度恒定的条件下进行显影，使得原稿的图像的色调以期望的浓度再现。

7. 发明授权

US4785331A Electrophotographic copying method and apparatus 失效
标题翻译：电子照相复印方法和装置
公开(公告)号：US4785331A
公开(公告)日：1988-11-15
申请号：US117836
申请日：1987-11-09
申请人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama
发明人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama
IPC分类号： G03G15/00 , G03G15/045 , G03G15/08 , G03G15/06
CPC分类号： G03G15/045 , G03G15/0849 , G03G15/5041 , G03G2215/00042
摘要： An electrophotographic copying apparatus is capable of forming outline images. It comprises a first charging device, an exposing device, a second charging device and a developing device along a moving direction of a photoconductor. A sensor detects an amount of toner adhering to a reference image formed on the surface of the photoconductor. Supply of toner is controlled based on the detected amount. In an outline image forming mode, an amount of toner to be supplied is set to a value smaller than an amount in a standard image forming mode.
摘要翻译：电子照相复印装置能够形成轮廓图像。其包括沿着感光体的移动方向的第一充电装置，曝光装置，第二充电装置和显影装置。传感器检测附着在形成在感光体的表面上的参考图像的调色剂的量。基于检测到的量控制调色剂的供应。在轮廓图像形成模式中，要供给的调色剂量被设定为小于标准图像形成模式的量的值。

8. 发明授权

US4828953A Method for the formation of outline images corresponding to the peripheral outlines of document's images 失效
标题翻译：用于形成对应于文档图像的外围轮廓的轮廓图像的方法
公开(公告)号：US4828953A
公开(公告)日：1989-05-09
申请号：US58266
申请日：1987-05-21
申请人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama
发明人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama
IPC分类号： G03G13/045 , G03G13/22
CPC分类号： G03G13/22 , G03G13/045
摘要： The present invention relates to a method for forming an outline of an image. By this method, at first, an electrostatic latent image bearing member is charged and then irradiated to a negative image to form an electrostatic latent image. Thereafter, the irradiated member is re-charged with a scorotron charger while applying a voltage to a grid, said voltage being lower than the surface potential of the non-image portion of the latent image, being higher than the potential of the image portion of the latent image and being of the same porality as that of the charging. By this re-charging, in one embodiment, the outline portion of the image has lower potential than the other portion. Then, the outline portion of the image with lower potential is visualized with a reversal development by using a toner charged to a polarity same as the polarity of charging.Or in another embodiment, the outline portion of the image has higher potential than the other portion. Then, the outline portion of the image with high potential is visualized with a normal development by using a toner charged to a polarity opposite to the polarity of charging.
摘要翻译：本发明涉及一种形成图像轮廓的方法。通过该方法，首先，对静电潜像承载部件进行充电，然后照射到负像以形成静电潜像。之后，将照射部件用栅极充电器重新充电，同时施加电压到电网，所述电压低于潜像的非图像部分的表面电位，高于图像部分的电位潜像，与充电相同。通过这种再充电，在一个实施例中，图像的轮廓部分具有比其他部分更低的电位。然后，通过使用充电至与充电极性相同的极性的调色剂，通过反转显影可视化具有较低电位的图像的轮廓部分。或者在另一个实施例中，图像的轮廓部分具有比其他部分更高的电位。然后，通过使用以与充电极性相反的极性进行充电的调色剂，通过正常显影，可视化具有高电位的图像的轮廓部分。

9. 发明授权

US5063127A Method for forming multi-color images 失效
标题翻译：多色图像形成方法
公开(公告)号：US5063127A
公开(公告)日：1991-11-05
申请号：US439581
申请日：1989-11-21
申请人： Tateki Oka , Tomoaki Yokoyama
发明人： Tateki Oka , Tomoaki Yokoyama
IPC分类号： G03G13/01
CPC分类号： G03G13/013
摘要： A first electrostatic latent image on an image bearer is developed with a first toner in a first developing unit, and a second electrostatic latent image thereon is developed with a second toner in a second developing unit, wherein the first toner is transmittable to the image bearer at a lower bias voltage than the second toner, and wherein the second toner and a foreign first toner mixed in the second developing unit are chargeable to the same polarity by friction with a carrier contained in the second developing unit; the second developing unit is put into operation for a non-image forming portion of the image bearer by applying a voltage thereto wherein the voltage is maintained higher than the surface potential of the non-image forming portion so as to enable the foreign first toner to adhere thereto.
摘要翻译：图像载体上的第一静电潜像在第一显影单元中用第一调色剂显影，并且其上的第二静电潜像在第二显影单元中用第二调色剂显影，其中第一调色剂可传输到图像承载体在比第二调色剂低的偏置电压下，并且其中混合在第二显影单元中的第二调色剂和外来的第一调色剂可通过与包含在第二显影单元中的载体的摩擦而带电相同的极性; 第二显影单元通过施加电压而对图像承载体的非图像形成部分进行操作，其中电压保持高于非图像形成部分的表面电位，以使外来第一调色剂坚持

10. 发明授权

US5012285A Developing apparatus including a partitioning arrangement for partitioning the toner accommodating tank 失效
标题翻译：显影装置包括用于分隔调色剂容纳槽的分隔装置
公开(公告)号：US5012285A
公开(公告)日：1991-04-30
申请号：US191122
申请日：1988-05-06
申请人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama , Hiroshi Mizuno , Hiroshi Murasaki , Akihito Ikegawa , Kouichi Etou , Shuichi Nakagawa
发明人： Tateki Oka , Naoki Toyoshi , Tomoaki Yokoyama , Hiroshi Mizuno , Hiroshi Murasaki , Akihito Ikegawa , Kouichi Etou , Shuichi Nakagawa
IPC分类号： G03G15/08
CPC分类号： G03G15/0822 , G03G15/0877 , G03G15/0896
摘要： A developing apparatus includes a photosensitive drum positioned in confronting relation to a developing sleeve. A toner accommodating tank is provided for supplying toner to the developing sleeve. The toner accommodating tank is divided into a small chamber and a supplementary chamber which are separated from one another by a partition which permits toner to be supplied from the supplementary chamber to the small chamber but which prevents the return of toner from the small chamber to the supplementary. A movable shutter selectively permits and prevents toner from being supplied from the supplementary chamber to the small chamber in accordance with operation of the apparatus.
摘要翻译：显影装置包括与显影套筒相对定位的感光鼓。提供调色剂容纳槽，用于向显影套筒供应调色剂。调色剂容纳箱被分成小室和辅助室，它们通过隔板彼此分开，隔板允许调色剂从辅助室供应到小室，但防止调色剂从小室返回到补充。根据设备的操作，活动快门选择性地允许和防止调色剂从辅助室供应到小室。

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