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11. 发明授权

US5598252A Electronic image forming apparatus with reduced residual carrier and toner attraction 失效
标题翻译：减少残留载体和调色剂吸引力的电子成像装置
公开(公告)号：US5598252A
公开(公告)日：1997-01-28
申请号：US500597
申请日：1995-07-11
申请人： Hideo Yamasa , Fumio Shimazu , Koichi Inui , Shirou Wakahara , Yuuhi Yui , Eiichi Kido , Hiromu Yoshimoto
发明人： Hideo Yamasa , Fumio Shimazu , Koichi Inui , Shirou Wakahara , Yuuhi Yui , Eiichi Kido , Hiromu Yoshimoto
IPC分类号： B41J2/44 , G03G15/00 , G03G15/02 , G03G15/04 , G03G15/043 , G03G15/047 , G03G15/06 , G03G15/16 , G03G21/00 , G03G21/08 , G03G21/14
CPC分类号： G03G21/08 , G03G15/1675
摘要： An image forming apparatus provides a photosensitive body, a main charger, an exposing unit, developing unit and a contact-transfer charger. The main charger charges the photosensitive body with a predetermined electric potential. The exposing unit applies a laser beam on the surface of the photosensitive body to form an electric latent image. The developing unit develops the electrostatic latent image to form a toner image. The contact-transfer charger transfers the toner image on an image transfer paper. The image forming apparatus further provides controller for power supplies. The controller controls the power supplies after an image forming operation in a manner to enhance the electric potential of the photosensitive body to a high level by the main charger, drop the surface potential of the photosensitive body to a low level by the contact-transfer charger and then to cut off a bias voltage of the developing unit.
摘要翻译：图像形成装置提供感光体，主充电器，曝光单元，显影单元和接触转印充电器。主充电器以预定电位对感光体充电。曝光单元在感光体的表面上施加激光束以形成电潜像。显影单元显影静电潜像以形成调色剂图像。接触转印充电器将图像转印纸上的调色剂图像转印。图像形成装置还提供用于电源的控制器。控制器以图像形成操作的方式控制电源，以通过主充电器将感光体的电位提高到高电平，通过接触转印充电器将感光体的表面电位降至较低水平然后切断显影单元的偏置电压。

12. 发明授权

US5629726A Image forming apparatus with electrostatically controlled developer particle manipulation 失效
标题翻译：具有静电显影剂颗粒操作的图像形成装置
公开(公告)号：US5629726A
公开(公告)日：1997-05-13
申请号：US550767
申请日：1995-10-31
申请人： Hideo Yamasa
发明人： Hideo Yamasa
IPC分类号： B41J2/385 , B41J2/415 , G03G15/05 , G03G15/34
CPC分类号： G03G15/346 , B41J2/4155
摘要： An image forming apparatus is provided with a control electrode having a plurality of gates where negatively charged toner passes through, and the control electrode is arranged such that an electrode layer is formed on an insulating layer made of synthetic resin having electron attractiveness stronger than that of synthetic resin contained in the toner. For this reason, on the control electrode, when the toner flies to contact with the insulating layer, electrostatic force (repulsive force) acts between negative charges of the contact portion and the negative charges of the toner, and thus the charges repulse each other. Therefore, the toner does not adhere to the insulating layer. In such a manner, the adhesion of the toner to the control electrode is prevented and thus each gate is not blocked. As a result, even after long or frequent use of the control electrode, the flying of the toner by the control electrode can be stably controlled, thereby making it possible to obtain an image with excellent quality. Therefore, even if the control electrode is not maintained, namely, cleaned or replaced, an image with excellent quality can be obtained stably for a long time.
摘要翻译：图像形成装置具有控制电极，该控制电极具有带负电荷的调色剂通过的多个栅极，并且控制电极被布置成使得电极层形成在由合成树脂制成的绝缘层上，该合成树脂具有比包含在调色剂中的合成树脂。因此，在控制电极上，当调色剂与绝缘层相接触时，静电力（排斥力）作用在接触部分的负电荷和调色剂的负电荷之间，因此电荷相互排斥。因此，调色剂不粘附到绝缘层。以这种方式，防止调色剂对控制电极的粘附，因此每个门不被阻挡。结果，即使在长时间或频繁地使用控制电极之后，可以稳定地控制由控制电极驱动调色剂，从而可以获得具有优良品质的图像。因此，即使没有维持控制电极即清洁或更换，也能够长时间稳定地获得质量优良的图像。

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