公开(公告)号：US07636539B2

公开(公告)日：2009-12-22

申请号：US11411128

申请日：2006-04-26

申请人： Akihiro Kawasaki ,  Atsushi Takehara ,  Yoshie Iwakura ,  Takafumi Miyazaki ,  Tomoya Adachi

发明人： Akihiro Kawasaki ,  Atsushi Takehara ,  Yoshie Iwakura ,  Takafumi Miyazaki ,  Tomoya Adachi

IPC分类号： G03G15/01

CPC分类号： G03G15/1615 ,  G03G2215/1614

摘要： An image forming unit includes four photoconductors, a belt extended around a driving roller and an extension-cum-primary transfer roller. Three primary transfer rollers sandwich the belt in association with a corresponding photoconductor. The extension-cum-primary transfer roller serves both as an extension roller and a primary transfer roller.

摘要翻译： 图像形成单元包括四个感光体，围绕驱动辊延伸的带和延伸与一次转印辊。 三个一次转印辊与相应的光电导体相关联地夹持带。 延伸 - 一次转印辊同时用作延伸辊和一次转印辊。

公开(公告)号：US07587159B2

公开(公告)日：2009-09-08

申请号：US11855739

申请日：2007-09-14

申请人： Kazuoki Fuwa ,  Masayuki Hagi ,  Yoshihiro Mikuriya ,  Hideaki Yasunaga ,  Hiroaki Kato ,  Yoshitaka Sekiguchi ,  Yoshie Iwakura

发明人： Kazuoki Fuwa ,  Masayuki Hagi ,  Yoshihiro Mikuriya ,  Hideaki Yasunaga ,  Hiroaki Kato ,  Yoshitaka Sekiguchi ,  Yoshie Iwakura

IPC分类号： G03G15/14

CPC分类号： G03G15/1685 ,  G03G2215/0132 ,  G03G2215/1614

摘要： Provided is an image forming method that comprises a charging step, an exposing step, a developing step, an intermediate transfer step and a secondary transfer step, wherein the diameter R (mm) of a secondary transfer roller used in the secondary transfer step and the distance A (mm) between a nip center of the secondary transfer roller and a site where paper contacts with a secondary transfer belt at ingress side satisfy the following relation, and the charge amount Q (μC/g) of the toner going into the secondary transfer step satisfies the following relation. R/40

摘要翻译： 提供了一种图像形成方法，其包括充电步骤，曝光步骤，显影步骤，中间转印步骤和二次转印步骤，其中在二次转印步骤中使用的二次转印辊的直径R（mm）和 二次转印辊的辊隙中心与进纸侧与二次转印带接触的位置之间的距离A（mm）满足以下关系，并且进入二次转印辊的调色剂的带电量Q（μC/ g） 转移步骤满足以下关系。 <？in-line-formula description =“In-line Formulas”end =“lead”？> R / 40 15 / A2

公开(公告)号：US6078772A

公开(公告)日：2000-06-20

申请号：US938618

申请日：1997-09-26

申请人： Toshihiko Takaya ,  Fumio Shimazu ,  Seiichi Yoshida ,  Hideki Ohnishi ,  Tomohiro Oikawa ,  Yoshie Iwakura

发明人： Toshihiko Takaya ,  Fumio Shimazu ,  Seiichi Yoshida ,  Hideki Ohnishi ,  Tomohiro Oikawa ,  Yoshie Iwakura

IPC分类号： G03G21/14 ,  G03G15/01 ,  G03G15/16 ,  G03G15/14

CPC分类号： G03G15/1685 ,  G03G15/167 ,  G03G2215/1614

摘要： An image-forming apparatus is provided with: a photoconductor drum having a surface on which a toner image is formed, a transfer drum for transferring the toner image onto a copying material by allowing the copying material to contact the photoconductor drum, and a ground roller for electrostatically attracting the copying material onto the transfer drum prior to transferring the toner image onto the copying material. He transfer drum is constituted by a semi-conductive layer and a dielectric layer that are stacked on a conductive layer. [Supposing that] The nip width between the photoconductor drum and the transfer drum is L1, the rotation speed of the two drums is Vp, and the time constant, which is represented by a product of the resistance and the capacitance between the two drums, is .tau., the relationship represented by L1/Vp

摘要翻译： 图像形成装置具有：具有形成有调色剂图像的表面的感光鼓，用于通过允许复印材料接触感光鼓而将调色剂图像转印到复印材料上的转印鼓和接地辊 用于在将调色剂图像转印到复印材料之前将复制材料静电吸引到转印鼓上。 转印鼓由层叠在导电层上的半导电层和电介质层构成。 [假设]感光鼓和转印鼓之间的压区宽度为L1，两个鼓的转速为Vp，由两个鼓之间的电阻和电容的乘积表示的时间常数， 是tau，由L1 / Vp

公开(公告)号：US06134415A

公开(公告)日：2000-10-17

申请号：US217042

申请日：1998-12-21

申请人： Yoshie Iwakura ,  Fumio Shimazu

发明人： Yoshie Iwakura ,  Fumio Shimazu

IPC分类号： G03G15/01 ,  G03G15/16

CPC分类号： B82Y15/00 ,  G03G15/0131 ,  G03G2215/0119

摘要： An idle roller on which a dielectric belt is wound is made up of a metal such as aluminum etc., and is used as a charging device. A voltage is applied to this idle roller from a d.c. power source. A sheet of paper is made to pass into and between this grounded idle roller (grounded via the dielectric belt) and the metal roller so that the paper is electrostatically attracted to the dielectric belt. The same d.c. power source which applies a d.c. voltage to the idle roller is connected to a multiple number of transfer rollers so as apply the same d.c. voltage to these transfer rollers.

摘要翻译： 卷绕介质带的空转辊由铝等金属构成，用作充电装置。 从直流电压向该空转辊施加电压。 能量源。 制成一张纸通过该接地的空转辊（通过介质带接地）和金属辊之间和之间，使得纸被静电吸引到电介质带。 相同的直径 电源应用直流 连接到空转辊的电压连接到多个转印辊上，以便施加相同的直流电流。 这些转印辊的电压。

公开(公告)号：US6097923A

公开(公告)日：2000-08-01

申请号：US42021

申请日：1998-03-13

申请人： Yoshie Iwakura ,  Seiichi Yoshida ,  Hideki Ohnishi ,  Fumio Shimazu

发明人： Yoshie Iwakura ,  Seiichi Yoshida ,  Hideki Ohnishi ,  Fumio Shimazu

IPC分类号： G03G15/01 ,  G03G15/16

CPC分类号： G03G15/1685 ,  G03G15/167

摘要： When a grounded conductive roller touches a transfer drum through a transfer material while a voltage is applied to a conductor layer, charges having a polarity opposite to the polarity of the voltage applied to the conductor layer are generated over the transfer material, thereby making it possible to attract the transfer material to the dielectric layer. Since the voltage is applied to the conductor layer, the electrostatic attraction of the transfer material and the toner transfer can be carried out using a single power source. Moreover, since the attraction of the transfer material and the toner transfer are carried out by the charge injection, a lower voltage can be used. Thus, the voltage can be readily controlled while reducing the ozone emission to a relatively low level. Furthermore, since the toner transfer and electrostatic attraction of the transfer material can be carried out using a single power source, the apparatus can be downsized and less expensive. In addition, when a semiconductor layer is made of a solid elastic body, a high-quality transferred toner image can be obtained without image quality deterioration.

摘要翻译： 当接地的导电辊通过转印材料接触传送鼓，同时向导体层施加电压时，在转印材料上产生具有与施加到导体层的电压的极性相反的极性的电荷，从而使其成为可能 以将转印材料吸引到介电层。 由于向导体层施加电压，所以可以使用单个电源来进行转印材料的静电吸引和调色剂转印。 此外，由于转印材料和调色剂转印的吸引是通过电荷注入进行的，所以可以使用较低的电压。 因此，可以容易地控制电压，同时将臭氧发射降低到相对低的水平。 此外，由于可以使用单个电源来进行转印材料的调色剂转印和静电吸引，所以可以将装置小型化并且成本更低。 此外，当半导体层由固体弹性体制成时，可以获得高质量的转印调色剂图像而没有图像质量劣化。

公开(公告)号：US5697034A

公开(公告)日：1997-12-09

申请号：US630982

申请日：1996-04-12

申请人： Yoshie Iwakura ,  Takuya Abe ,  Kiyoshi Toizumi ,  Fumio Shimazu

发明人： Yoshie Iwakura ,  Takuya Abe ,  Kiyoshi Toizumi ,  Fumio Shimazu

IPC分类号： G03G15/16

CPC分类号： G03G15/1685

摘要： An image forming apparatus has a photoreceptor drum whereon a toner image is to be formed, a transfer drum for transferring the toner image to a transfer material by making the transfer material contact with the photoreceptor drum, the transfer drum having a dielectric layer, semiconducting layer and conducting layer laminated in this order from a surface which comes into contact with the transfer material, a power source section for applying any voltage to the conducting layer, and a grounded conducting roller which is located in an upstream section in a transfer material transporting direction with respect to a transfer position on a surface of the dielectric layer and comes into contact with the dielectric layer surface through the transfer material. The volume resistivity of the dielectric layer is not lower than 40 percent of the volume resistivity of the semiconducting layer. In this structure, a current component flowing in the circuit is greater than a current component causing the dielectric layer to function as a power source, thereby accumulating charges on the dielectric layer. As a result, stable adhesion of the transfer material to the transfer drum, and improved image quality are achieved.

摘要翻译： 图像形成装置具有要形成调色剂图像的感光鼓，用于通过使转印材料与感光鼓接触来将调色剂图像转印到转印材料的转印鼓，转印鼓具有介电层，半导体层 和从与转印材料接触的表面依次层压的导电层，用于向导电层施加任何电压的电源部分和位于转印材料输送方向上游部分的接地导电辊 相对于电介质层的表面上的转印位置，通过转印材料与电介质层表面接触。 电介质层的体积电阻率不低于半导体层体积电阻率的40％。 在这种结构中，在电路中流动的电流分量大于导致电介质层用作电源的电流分量，从而在电介质层上积累电荷。 结果，可以实现转印材料对转印鼓的稳定的粘附，并提高图像质量。

公开(公告)号：US08983323B2

公开(公告)日：2015-03-17

申请号：US13749897

申请日：2013-01-25

申请人： Takeshi Yamashita ,  Yuji Nagatomo ,  Naoki Nakatake ,  Yasuhiro Fujiwara ,  Takafumi Miyazaki ,  Yasuhide Matsuno ,  Takahiro Sanada ,  Rumi Miyazaki ,  Kyoko Abe ,  Tomoya Adachi ,  Yoshie Iwakura

发明人： Takeshi Yamashita ,  Yuji Nagatomo ,  Naoki Nakatake ,  Yasuhiro Fujiwara ,  Takafumi Miyazaki ,  Yasuhide Matsuno ,  Takahiro Sanada ,  Rumi Miyazaki ,  Kyoko Abe ,  Tomoya Adachi ,  Yoshie Iwakura

IPC分类号： G03G15/16 ,  G03G15/14 ,  G03G15/01 ,  G03G15/00

CPC分类号： G03G15/14 ,  G03G15/0189 ,  G03G15/1615 ,  G03G15/5008

摘要： Provided is a color image forming apparatus that includes: image carriers that form toner image of black and other colors; an intermediate transfer body that makes contact with the image carriers; and transfer units that transfer the toner images on the image carriers to the intermediate transfer body. A line velocity difference is set between the image carriers and the intermediate transfer body. An accelerated cohesion degree of toner is equal to or larger than 54%. A linear velocity difference X1 between the image carrier for black and the intermediate transfer body satisfies a relation of 0

摘要翻译： 提供一种彩色图像形成装置，其包括：形成黑色和其他颜色的调色剂图像的图像载体; 与图像载体接触的中间转印体; 以及将图像载体上的调色剂图像转印到中间转印体的转印单元。 在图像载体和中间转印体之间设置线速度差。 调色剂的加速内聚力等于或大于54％。 黑色图像载体和中间转印体之间的线速度差X1满足0

公开(公告)号：US20140153955A1

公开(公告)日：2014-06-05

申请号：US14086483

申请日：2013-11-21

申请人： Takeshi YAMASHITA ,  Yoshie Iwakura ,  Yasuhiro Fujiwara

发明人： Takeshi YAMASHITA ,  Yoshie Iwakura ,  Yasuhiro Fujiwara

IPC分类号： G03G15/16

CPC分类号： G03G15/0189 ,  G03G15/1605 ,  G03G15/168

摘要： An image forming apparatus includes an image bearing member to bear a latent image on a surface thereof, a developing device to develop the latent image with toner, an intermediate transfer member, a secondary transfer member, a cleaning device, and a main body. The cleaning device cleans the secondary transfer member for a predetermined time period T1 during a startup operation after printing is completed normally before subsequent printing. The main body houses the image bearing member, the developing device, the intermediate transfer member, the secondary transfer member, and the cleaning device. At least one of the image bearing member and the developing device constitutes a process cartridge detachably attachable relative to the main body, and in a case in which the process cartridge is installed in the main body, the cleaning device cleans the secondary transfer member for a time period T2 extended from the predetermined time period T1.

摘要翻译： 图像形成装置包括在其表面上承载潜像的图像承载部件，用调色剂显影潜像的显影装置，中间转印部件，二次转印部件，清洁装置和主体。 清洁装置在打印完成后的正常时间期间的启动操作期间清洁二次转印部件一段预定的时间段T1。 主体容纳图像承载部件，显影装置，中间转印部件，二次转印部件和清洁装置。 图像承载部件和显影装置中的至少一个构成相对于主体可拆卸地安装的处理盒，并且在处理盒安装在主体中的情况下，清洁装置清洁二次转印部件 时间段T2从预定时间段T1延伸。

公开(公告)号：US07379694B2

公开(公告)日：2008-05-27

申请号：US10547933

申请日：2004-03-10

申请人： Toshiki Takiguchi ,  Yoko Sawa ,  Hirokazu Yamauchi ,  Yoshiaki Masuda ,  Yoshie Iwakura ,  Hiroshi Ishii

发明人： Toshiki Takiguchi ,  Yoko Sawa ,  Hirokazu Yamauchi ,  Yoshiaki Masuda ,  Yoshie Iwakura ,  Hiroshi Ishii

IPC分类号： G03G15/20

CPC分类号： G03G15/1675

摘要： A combined resistance R1=Vt1/I1 (MO) of a transfer belt (61) and a recording sheet obtained when a transfer current I1 (μA) passes through the transfer belt (61) and the recording sheet upon application of a first transfer bias voltage Vt1 (V) to a transfer roller (6b) from a high-voltage power source (6f) and a combined resistance R2=Vt2/I2 (MO) of the transfer belt (61) and the recording sheet obtained when a transfer current I2 (μA) passes through the transfer belt (61) and the recording sheet upon application of a second transfer bias voltage Vt2 (V) to the transfer roller (6b) from the high-voltage power source (6f), are established to have the relationship: R2/R1=7 ?(I2)−0.5 therebetween.

摘要翻译： 转印带（61）的组合电阻R 1 = Vt 1 / I 1（MO）和当转印电流I 1（μA）通过转印带61和记录纸时获得的记录纸 来自高压电源（6f）的转印辊（6b）和转印带（61）的组合电阻R 2 = Vt 2 / I 2（MO）的第一转印偏压电压Vt 1（V） ）和当转印电流I 2（μA）通过转印带（61）和记录片材时，从转印辊（6b）向转印辊（6b）施加第二转印偏压Vt 2（V）时获得的记录纸 高压电源（6f）被建立为具有以下关系：R 2 / R 1 = 7（I 2）<-0.5 。

公开(公告)号：US20060257176A1

公开(公告)日：2006-11-16

申请号：US11411128

申请日：2006-04-26

申请人： Akihiro Kawasaki ,  Atsushi Takehara ,  Yoshie Iwakura ,  Takafumi Miyazaki ,  Tomoya Adachi

发明人： Akihiro Kawasaki ,  Atsushi Takehara ,  Yoshie Iwakura ,  Takafumi Miyazaki ,  Tomoya Adachi

IPC分类号： G03G15/01

CPC分类号： G03G15/1615 ,  G03G2215/1614

摘要： An image forming unit includes four photoconductors, a belt extended around a driving roller and an extension-cum-primary transfer roller. Three primary transfer rollers sandwich the belt in association with a corresponding photoconductor. The extension-cum-primary transfer roller serves both as an extension roller and a primary transfer roller.

摘要翻译： 图像形成单元包括四个感光体，围绕驱动辊延伸的带和延伸与一次转印辊。 三个一次转印辊与相应的光电导体相关联地夹持带。 延伸 - 一次转印辊同时用作延伸辊和一次转印辊。