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1. 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。

2. 发明授权

US5459555A Electronic image forming apparatus 失效
标题翻译：电子图像形成装置
公开(公告)号：US5459555A
公开(公告)日：1995-10-17
申请号：US77988
申请日：1993-06-15
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 , G03G15/18
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。

3. 发明授权

US06606471B2 Image forming apparatus 有权
公开(公告)号：US06606471B2
公开(公告)日：2003-08-12
申请号：US09968148
申请日：2001-10-01
申请人： Yukikazu Kamei , Tomohiro Oikawa , Shirou Wakahara , Hideki Onishi , Hiroshi Doshoda
发明人： Yukikazu Kamei , Tomohiro Oikawa , Shirou Wakahara , Hideki Onishi , Hiroshi Doshoda
IPC分类号： G03G1502
CPC分类号： G03G15/0233
摘要： The present invention relates to an image forming apparatus with a charging member which charges an image bearer with a photoconductive surface. Forming a layer containing ferroelectric as part on the charging member, and applying the electric field formed by dipoles of the ferroelectric, the photosensitive member surface is electrified, thereby downsizing a charger and reducing power consumption thereof are achieved for realizing low-cost and reducing the number of consumable parts sufficiently.

4. 发明授权

US06270195B1 Image forming apparatus using gates and electrodes for selectively passing toner 有权
标题翻译：使用栅极和电极的图像形成装置用于选择性地通过调色剂
公开(公告)号：US06270195B1
公开(公告)日：2001-08-07
申请号：US09188765
申请日：1998-11-09
申请人： Shirou Wakahara , Hironori Ogasawara
发明人： Shirou Wakahara , Hironori Ogasawara
IPC分类号： B41J206
CPC分类号： B41J2/4155 , G03G15/346 , G03G2217/0025
摘要： An image forming unit includes: a toner support for supporting the toner; an opposing electrode opposed to the toner support; a high-voltage power source for supplying a high voltage to produce a potential difference between the toner support and the opposing electrode; a control electrode having an insulative substrate disposed between the developer support and the opposing electrode, a plurality of gates formed in the insulative substrate for forming the passage of the developer, and electrode groups provided around a multiple number of the gates; and a control device for selectively applying multiple potential states to each electrode in the control electrode, wherein the control device controls the passage of the developer through the gates by applying the predetermined voltage to electrode groups so as to form an image on the surface of the paper which is being conveyed over the opposing electrode. In this configuration, a slanted portion for reducing the component of a force, acting on the toner residing on the paper, in the direction opposite to the conveyed direction of the paper, is provided on the downstream side of the opposing electrode.
摘要翻译：图像形成单元包括：用于支撑调色剂的调色剂载体; 与调色剂载体相对的相对电极; 用于提供高电压以产生调色剂载体和相对电极之间的电位差的高压电源; 控制电极，其具有设置在显影剂载体和对置电极之间的绝缘基板，形成在用于形成显影剂通道的绝缘基板中的多个栅极以及围绕多个栅极设置的电极组; 以及用于选择性地对控制电极中的每个电极施加多个电位状态的控制装置，其中所述控制装置通过将预定电压施加到电极组来控制显影剂通过栅极的通过，以便在所述控制电极的表面上形成图像在对置电极上传送的纸张。在这种结构中，在对置电极的下游侧设置有用于减小作用在纸上的调色剂上与纸被传送方向相反的方向上作用在纸上的色调分量的倾斜部分。

5. 发明授权

US6056390A Image forming apparatus wherein the velocity of the toner supporting medium is higher than recording medium transport velocity 失效
标题翻译：图像形成装置，其中调色剂支撑介质的速度高于记录介质传送速度
公开(公告)号：US6056390A
公开(公告)日：2000-05-02
申请号：US859371
申请日：1997-05-20
申请人： Shirou Wakahara
发明人： Shirou Wakahara
IPC分类号： B41J2/385 , B41J2/415 , G03G15/05 , G03G15/34 , B41J2/06
CPC分类号： B41J2/4155 , G03G15/346
摘要： Peripheral velocity of a toner support is set up so as to satisfy the following condition:L/T.ltoreq.vs.ltoreq.(d/t).multidot.cos .theta.-(1/t)(L.sup.2 -d.sup.2 sin .sup.2 .theta.).sup.1/2assuming that d denotes the distance between centers of two adjacent gates, .theta. the angle of slant connected between centers of the same two gates, L the maximum length of toner-free area on peripheral surface of the toner support, vs the peripheral velocity of the toner support, t the time lag between voltage application to one annular electrode and to the other, and T is the time interval between successive voltage applications to an identical gate (the shortest period of time during which the voltage for inhibiting passage of the toner is applied to the gate).
摘要翻译：设置调色剂载体的外围速度以满足以下条件：L / T

6. 发明授权

US5933176A Image forming apparatus with reduced toner transfer time 失效
标题翻译：降低色粉转印时间的成像装置
公开(公告)号：US5933176A
公开(公告)日：1999-08-03
申请号：US784785
申请日：1997-01-16
申请人： Shirou Wakahara
发明人： Shirou Wakahara
IPC分类号： B41J2/385 , B41J2/415 , G03G15/05 , G03G15/00 , B41J2/41
CPC分类号： B41J2/4155
摘要： A voltage from a high voltage power source is applied between a toner support and an opposing electrode to generate an electric field between the two elements which permits the toner carried on the toner support to jump to the opposing electrode side. A control electrode is provided between the developer support and the opposing electrode to control the jumping of the toner. The control electrode is formed with annular electrodes around gates through which the toner passes through. Each annular electrode is supplied with a voltage for causing the toner to jump or for prohibiting the toner from jumping. In applying the voltage for causing the toner to jump to each annular electrode, the control power source starts to apply a voltage for prohibiting the toner from jumping, to annular electrode at a time when the jumping toner travel past the location of the control electrode. In this situation, the traveling toner continues to move toward the recording paper on the opposing electrode. Therefore, the time during which the voltage for causing the toner to jump is applied will not exceed the time required for the toner to reach the recording paper. As a result, it is possible to reduce the time span from a toner jump event to the next, and this feature improves the recording speed.
摘要翻译：来自高电压电源的电压被施加在调色剂载体和相对电极之间，以在两个元件之间产生电场，这允许承载在调色剂载体上的调色剂跳到相对的电极侧。控制电极设置在显影剂载体和相对电极之间，以控制调色剂的跳跃。控制电极在周围的环形电极形成，调色剂经过该电极。每个环形电极被提供有使调色剂跳跃或禁止调色剂跳跃的电压。在施加用于使调色剂跳到每个环形电极的电压时，控制电源开始施加用于禁止调色剂跳跃的电压，使得当跳跃色调剂行进通过控制电极的位置时，环形电极。在这种情况下，行进的调色剂继续向相对电极上的记录纸移动。因此，施加使调色剂跳跃的电压的时间不会超过调色剂到达记录纸所需的时间。结果，可以减少从调色剂跳跃事件到下一个的时间跨度，并且该特征提高了记录速度。

7. 发明授权

US06601946B1 Image forming apparatus in which toner is removed by changing electric field between opposing electrode and control electrode 失效
标题翻译：通过改变对置电极和控制电极之间的电场来除去调色剂的图像形成装置
公开(公告)号：US06601946B1
公开(公告)日：2003-08-05
申请号：US09129202
申请日：1998-07-24
申请人： Shirou Wakahara , Yukihito Nishio , Yasuhiro Takai , Hirokazu Fujita
发明人： Shirou Wakahara , Yukihito Nishio , Yasuhiro Takai , Hirokazu Fujita
IPC分类号： B41J206
CPC分类号： G03G15/346 , G03G2217/0025
摘要： An image forming apparatus capable of forming an image with a uniform density includes a toner carrier, an opposing electrode, a high voltage power source for supplying a voltage to generate potential difference between the toner carrier and the opposing electrode, a control electrode arranged between the toner carrier and the opposing electrode and having a plurality of electrodes, and a control power source unit for implementing a plurality of potential states to each of the electrodes of the control electrode. The control electrode includes an insulating substrate, the plurality of electrodes provided on the insulating substrate and having passage portions for the toner, and a dielectric layer formed on a side facing the opposing electrode such that attracting force Fc attracting the toner adhered on the surface of the control electrode facing the opposing electrode is made smaller than attracting force Fb attracting the toner adhered on the opposing electrode. The control power supply unit includes an image forming unit for forming an image on a surface of a recording medium conveyed on the opposing electrode by applying prescribed potentials to respective ones of the plurality of electrodes and an electric field applying unit for applying an electric field of which electric field direction changes between the opposing electrode and the control electrode and which ensures that an electric force FE received by the toner adhered on the control electrode is greater than the attracting force Fc and that the force FE is smaller than the attracting force Fb.
摘要翻译：能够形成具有均匀密度的图像的图像形成装置包括调色剂载体，对置电极，用于提供电压以产生调色剂载体和相对电极之间的电位差的高压电源;控制电极，调色剂载体和对置电极，并具有多个电极;以及控制电源单元，用于对控制电极的每个电极实现多个电位状态。所述控制电极包括绝缘基板，所述多个电极设置在所述绝缘基板上并且具有用于所述调色剂的通道部分，以及形成在面向所述相对电极的一侧的电介质层，使得吸附附着在所述调色剂表面上的调色剂的吸引力Fc 使面对相对电极的控制电极小于吸引附着在相对电极上的调色剂的吸引力Fb。控制电源单元包括图像形成单元，用于通过向多个电极中的相应电极施加规定的电位而在对置电极上传送的记录介质的表面上形成图像;以及电场施加单元，用于施加电场电场方向在对置电极和控制电极之间发生变化，并且确保由附着在控制电极上的调色剂接收的电力FE大于吸引力Fc，并且力FE小于吸引力Fb。

8. 发明授权

US6123418A Image forming apparatus using jumping toner/developer 失效
标题翻译：使用跳跃式调色剂/显影剂的图像形成装置
公开(公告)号：US6123418A
公开(公告)日：2000-09-26
申请号：US021910
申请日：1998-02-11
申请人： Shirou Wakahara , Nobuhiko Nakano
发明人： Shirou Wakahara , Nobuhiko Nakano
IPC分类号： B41J2/385 , B41J2/06 , B41J2/415 , G03G15/05
CPC分类号： B41J2/4155 , G03G2217/0025
摘要： Formed between an opposing electrode and a toner support by a high voltage applied from a high-voltage power source is an electric field required for the toner carried on the toner support to jump toward the opposing electrode. The high-voltage power source and the duration of voltage application are adjusted so as to pick out suitable developer particles to be used for forming images.
摘要翻译：通过由高压电源施加的高电压在相对电极和调色剂载体之间形成的是调色剂载体上承载的调色剂向相对电极跳跃所需的电场。调整高压电源和施加电压的持续时间，以便拾取用于形成图像的合适的显影剂颗粒。

9. 发明授权

US5874973A Image forming apparatus that controls flight of developer particles at the start and/or end of an image forming operation 失效
标题翻译：在成像操作的开始和/或结束时控制显影剂颗粒的飞行的图像形成装置
公开(公告)号：US5874973A
公开(公告)日：1999-02-23
申请号：US785663
申请日：1997-01-17
申请人： Shirou Wakahara
发明人： Shirou Wakahara
IPC分类号： B41J2/415 , G03G15/34 , B41J2/06 , G01D15/06
CPC分类号： B82Y15/00 , B41J2/4155 , G03G15/346 , G03G2217/0025
摘要： A voltage from a high voltage power source is applied between a toner support and an opposing electrode to generate an electric field between the two elements which permits the toner carried on the toner support to jump to the opposing electrode side. A control electrode is provided between the toner support and the opposing electrode to control the jumping of the toner. The control electrode is formed with annular electrodes around gates through which the toner passes through. In this arrangement, one or the combination of the followings are featured: At the initial stage of the recording start, the toner support is made to rotate so that the amount of static charge on the toner is stabilized. After the toner is stabilized, the control power source applies a voltage for prohibiting the toner from jumping, to the annular electrodes, then applies a high voltage to the opposing electrode. Thus, the toner can be prevented from erroneously jumping from the toner support.
摘要翻译：来自高电压电源的电压被施加在调色剂载体和相对电极之间，以在两个元件之间产生电场，这允许承载在调色剂载体上的调色剂跳到相对的电极侧。控制电极设置在调色剂载体和对置电极之间，以控制调色剂的跳跃。控制电极在周围的环形电极形成，调色剂经过该电极。在这种布置中，特征在于以下的一个或其组合：在记录开始的初始阶段，使调色剂载体旋转，使得调色剂上的静电量稳定。在调色剂稳定之后，控制电源施加用于禁止调色剂跳跃的电压到环形电极，然后向相对电极施加高电压。因此，可以防止调色剂从调色剂载体错误跳出。

10. 发明授权

US06283583B1 Image forming apparatus having float electrode provided to make uniform electric field 失效
标题翻译：具有浮动电极以形成均匀电场的图像形成装置
公开(公告)号：US06283583B1
公开(公告)日：2001-09-04
申请号：US09121882
申请日：1998-07-24
申请人： Daisaku Imaizumi , Yukihito Nishio , Hirokazu Fujita , Shirou Wakahara
发明人： Daisaku Imaizumi , Yukihito Nishio , Hirokazu Fujita , Shirou Wakahara
IPC分类号： B41J206
CPC分类号： B41J2/4155 , G03G2217/0025
摘要： An image forming apparatus capable of forming an image with uniform density includes a toner carrier for carrying a toner, an opposing electrode arranged opposing to the toner carrier, a high voltage power supply unit for supplying a voltage to generate a potential difference between the toner carrier and the opposing electrode, a control electrode including a plurality of electrodes arranged between the toner carrier and the opposing electrode, and a control power supply unit for implementing a plurality of potential states at respective ones of the electrodes of the control electrode, controlling passage of the toner through a passage portion, and for forming an image on a surface of a recording medium conveyed over the opposing electrode. The control electrode includes an insulating substrate, the aforementioned plurality of electrodes having a passage portion through which the toner passes provided in the insulating substrate, and a plurality of float electrodes having an opening provided such that at least part of the plurality of electrodes are directly or electrically exposed to the toner carrier, for making uniform an electric field formed between the toner carrier and the opposing electrode.
摘要翻译：能够形成具有均匀密度的图像的图像形成装置包括用于承载调色剂的调色剂载体，与调色剂载体相对布置的相对电极，用于提供电压以产生调色剂载体之间的电位差的高压电源单元和对置电极，包括布置在调色剂载体和相对电极之间的多个电极的控制电极和用于在控制电极的各个电极处实现多个电位状态的控制电源单元，控制电极的控制通道调色剂通过通道部分，并在用于在相对电极上传送的记录介质的表面上形成图像。控制电极包括绝缘基板，上述多个电极具有通过部分，调色剂通过设置在绝缘基板中的通路部分，以及多个浮动电极，其具有设置成使得至少部分多个电极直接或电暴露于调色剂载体，以使在调色剂载体和相对电极之间形成均匀的电场。

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