公开(公告)号：US06170935B2

公开(公告)日：2001-01-09

申请号：US09016197

申请日：1998-01-30

申请人： Shirou Wakahara ,  Yukihito Nishio ,  Iwakazu Honda ,  Katsumi Adachi

发明人： Shirou Wakahara ,  Yukihito Nishio ,  Iwakazu Honda ,  Katsumi Adachi

IPC分类号： B41J206

CPC分类号： G03G15/346 ,  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. A shield power source is provided to apply an identical voltage as the surface potential of the toner layer carried on the toner support.

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。 提供屏蔽电源以施加与承载在调色剂载体上的调色剂层的表面电位相同的电压。

公开(公告)号：US6079818A

公开(公告)日：2000-06-27

申请号：US70978

申请日：1998-05-01

申请人： Shirou Wakahara ,  Iwakazu Honda ,  Katsumi Adachi ,  Yukihito Nishio

发明人： Shirou Wakahara ,  Iwakazu Honda ,  Katsumi Adachi ,  Yukihito Nishio

IPC分类号： B41J2/385 ,  B41J2/415 ,  G03G15/05 ,  B41J2/06

CPC分类号： B41J2/4155

摘要： An image forming unit has a toner supplying section and a printing section, and directly forms an image with the developer, in accordance with the image signal, onto a sheet of paper as the recording medium. The control electrode has a shield electrode in which the positions of the openings, the applied voltage and the diameters of the openings are controlled so that the jumping of the toner passing through the gates can be controlled finely and uniformly without being affected by the distances from the toner support to the opposing electrode and control electrode. A further shield electrode can be provided to perform further precise toner control and hence produce highly qualified images.

摘要翻译： 图像形成单元具有调色剂供应部分和打印部分，并且根据图像信号直接与显影剂形成图像作为记录介质。 控制电极具有屏蔽电极，其中开口的位置，施加的电压和开口的直径被控制，使得通过栅极的调色剂的跳跃可以被精细和均匀地控制，而不受距离的影响 调色剂支撑到对置电极和控制电极。 可以提供另一个屏蔽电极以执行进一步精确的调色剂控制，从而产生高质量的图像。

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。

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。

公开(公告)号：US5572309A

公开(公告)日：1996-11-05

申请号：US382912

申请日：1995-02-03

申请人： Yukihito Nishio ,  Shirou Wakahara ,  Hirokazu Fujita

发明人： Yukihito Nishio ,  Shirou Wakahara ,  Hirokazu Fujita

IPC分类号： B41J11/42 ,  B65H7/02 ,  G01N27/00 ,  G01V3/02 ,  G01V9/00 ,  G03G15/00 ,  H04N1/00 ,  G03G21/00

CPC分类号： G03G15/5029 ,  G03G15/65 ,  G03G2215/00725 ,  G03G2215/00734 ,  G03G2215/00763

摘要： A recording material recognizing device which enables a detection determining whether or not the recording material has passed and a detection determining the width of the recording material to be performed at one time, and also enables a detection determining a thickness, a resistance and a dielectric constant, of the recording material to be performed when physical values of the recording material are also required for stabilizing an image quality.

摘要翻译： 一种记录材料识别装置，其能够进行检测以确定记录材料是否已经通过，并且检测确定一次要执行的记录材料的宽度，并且还能够进行检测确定厚度，电阻和介电常数 ，当记录材料的物理值也需要稳定图像质量时要执行的记录材料。

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.

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。

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

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。

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。