公开(公告)号：US07551882B2

公开(公告)日：2009-06-23

申请号：US11757150

申请日：2007-06-01

申请人： Takashi Seto ,  Takashi Fujita ,  Katsuaki Miyawaki ,  Shin Kayahara ,  Atsushi Nakafuji ,  Kazumi Suzuki ,  Hirohmi Tamura ,  Hiromitsu Takagaki

发明人： Takashi Seto ,  Takashi Fujita ,  Katsuaki Miyawaki ,  Shin Kayahara ,  Atsushi Nakafuji ,  Kazumi Suzuki ,  Hirohmi Tamura ,  Hiromitsu Takagaki

IPC分类号： G03G15/16

CPC分类号： G03G15/1605 ,  G03G15/2064 ,  G03G2215/0119 ,  G03G2215/1695

摘要： An image forming apparatus includes an image bearing member, a latent electrostatic image forming unit, a developing unit, an intermediate transferring unit which has an intermediate transfer belt and a plurality of rollers supporting the intermediate transfer belt, and a transfer fixing unit. The transfer fixing unit has a transfer fixing belt, a plurality of rollers supporting the transfer fixing belt, a heating member, and a pressurizing member forming a transfer fixing nip with the transfer fixing belt. A first roller, which is one of the plurality of rollers supporting the intermediate transferring belt, is opposite to a second roller, which is one of the plurality of rollers supporting the fixing transfer belt. The first roller and the second roller form a transfer nip between the intermediate transferring belt and the fixing transfer belt. The diameter of the first roller is smaller than the diameter of the second roller.

摘要翻译： 图像形成装置包括图像承载部件，静电潜像形成单元，显影单元，具有中间转印带的中间转印单元和支撑中间转印带的多个辊以及转印固定单元。 转印定影单元具有转印定影带，支撑转印定影带的多个辊，加热构件和与转印定影带形成转印定影辊隙的加压构件。 作为支撑中间转印带的多个辊之一的第一辊与支撑固定转印带的多个辊之一的第二辊相反。 第一辊和第二辊在中间转印带和固定转印带之间形成转印辊隙。 第一辊的直径小于第二辊的直径。

公开(公告)号：US20080008505A1

公开(公告)日：2008-01-10

申请号：US11757150

申请日：2007-06-01

申请人： Takashi SETO ,  Takashi Fujita ,  Katsuaki Miyawaki ,  Shin Kayahara ,  Atsushi Nakafuji ,  Kazumi Suzuki ,  Hirohmi Tamura ,  Hiromitsu Takagaki

发明人： Takashi SETO ,  Takashi Fujita ,  Katsuaki Miyawaki ,  Shin Kayahara ,  Atsushi Nakafuji ,  Kazumi Suzuki ,  Hirohmi Tamura ,  Hiromitsu Takagaki

IPC分类号： G03G15/16 ,  G03G15/20

CPC分类号： G03G15/1605 ,  G03G15/2064 ,  G03G2215/0119 ,  G03G2215/1695

摘要： An image forming apparatus includes an image bearing member, a latent electrostatic image forming unit, a developing unit, an intermediate transferring unit which has an intermediate transfer belt and a plurality of rollers supporting the intermediate transfer belt, and a transfer fixing unit. The transfer fixing unit has a transfer fixing belt, a plurality of rollers supporting the transfer fixing belt, a heating member, and a pressurizing member forming a transfer fixing nip with the transfer fixing belt. A first roller, which is one of the plurality of rollers supporting the intermediate transferring belt, is opposite to a second roller, which is one of the plurality of rollers supporting the fixing transfer belt. The first roller and the second roller form a transfer nip between the intermediate transferring belt and the fixing transfer belt. The diameter of the first roller is smaller than the diameter of the second roller.

摘要翻译： 图像形成装置包括图像承载部件，静电潜像形成单元，显影单元，具有中间转印带的中间转印单元和支撑中间转印带的多个辊以及转印固定单元。 转印定影单元具有转印定影带，支撑转印定影带的多个辊，加热构件和与转印定影带形成转印定影辊隙的加压构件。 作为支撑中间转印带的多个辊之一的第一辊与支撑固定转印带的多个辊之一的第二辊相反。 第一辊和第二辊在中间转印带和固定转印带之间形成转印辊隙。 第一辊的直径小于第二辊的直径。

公开(公告)号：US07711300B2

公开(公告)日：2010-05-04

申请号：US11857579

申请日：2007-09-19

申请人： Atsushi Nakafuji ,  Takashi Fujita ,  Shin Kayahara ,  Hiromitsu Takagaki ,  Takashi Seto ,  Katsuaki Miyawaki ,  Kazumi Suzuki ,  Hirohmi Tamura

发明人： Atsushi Nakafuji ,  Takashi Fujita ,  Shin Kayahara ,  Hiromitsu Takagaki ,  Takashi Seto ,  Katsuaki Miyawaki ,  Kazumi Suzuki ,  Hirohmi Tamura

IPC分类号： G03G15/20

CPC分类号： G03G15/24 ,  G03G2215/1695

摘要： An image forming apparatus includes an image carrier for bearing a visible image thereon, an endless transfer-fixing belt stretchedly disposed between a plurality of spanning members, a pressure member for pressing the transfer-fixing belt to the image carrier while contacting a backside of the transfer-fixing belt at the transfer nip, and a heater for heating the visible image. The visible image on the image carrier is transferred onto the front surface of the transfer-fixing belt at the transfer nip and is transported to the transfer-fixing nip while heated by the heater, where the visible image is transferred and fixed on a recording member. The transfer-fixing belt is stretchedly arranged such that the transfer-fixing belt travels in a direction substantially perpendicular to a pressure direction of the pressure member in the proximity of the transfer nip.

摘要翻译： 图像形成装置包括用于在其上承载可见图像的图像载体，张紧地设置在多个跨越构件之间的环形转印定影带，用于将转印固定带按压到图像载体的压力构件，同时接触 在转印辊隙处的转印定影带，以及用于加热可见图像的加热器。 图像载体上的可见图像在转印辊隙处转印到转印固定带的前表面上，并且在可见图像被转印并固定在记录元件上的同时被加热器传送到转印定影辊隙 。 转印定影带被拉伸布置成使得转印定影带在与转印辊隙附近的压力构件的压力方向基本上垂直的方向上行进。

公开(公告)号：US07711301B2

公开(公告)日：2010-05-04

申请号：US11683086

申请日：2007-03-07

申请人： Takeshi Takemoto ,  Takashi Seto ,  Katsuaki Miyawaki ,  Takashi Fujita ,  Hiromitsu Takagaki ,  Atsushi Nakafuji ,  Shin Kayahara ,  Hirohmi Tamura ,  Kazumi Suzuki

发明人： Takeshi Takemoto ,  Takashi Seto ,  Katsuaki Miyawaki ,  Takashi Fujita ,  Hiromitsu Takagaki ,  Atsushi Nakafuji ,  Shin Kayahara ,  Hirohmi Tamura ,  Kazumi Suzuki

IPC分类号： G03G15/20

CPC分类号： G03G15/162 ,  G03G15/161

摘要： An image transfer device provided in an image forming apparatus in which, employing an endless belt as an intermediate transfer member, image transfer is performed at nip positions of a primary transfer portion and secondary transfer portion. Generation of warp in the transferred image resulting from transmission of fluctuations in load and torque of the endless belt generated at the nip position of one transfer portion nip to the nip position of the other transfer portion is prevented. The endless belt is turned between rollers and the endless belt is individually driven at the primary transfer portion and secondary transfer portion by drive sources to generate deflection between the primary transfer portion and the secondary transfer portion.

摘要翻译： 在图像形成装置中设置有图像转印装置，其中采用环形带作为中间转印部件，在一次转印部分和二次转印部分的夹持位置进行图像转印。 防止了在一个传送部分夹持部的夹持位置处产生的环形带的传递波动的传递和另一传送部的夹持位置处产生的转印图像中的翘曲的产生。 环形带在辊之间转动，环形带在一次转印部分和二次转印部分由驱动源单独驱动，以在一次转印部分和二次转印部分之间产生偏转。

公开(公告)号：US20070218386A1

公开(公告)日：2007-09-20

申请号：US11669817

申请日：2007-01-31

申请人： Kazumi Suzuki ,  Hiromitsu Takagaki ,  Takashi Fujita ,  Atsushi Nakafuji ,  Hiromi Tamura ,  Shin Kayahara ,  Tsuyoshi Sugimoto ,  Takashi Seto ,  Katsuaki Miyawaki

发明人： Kazumi Suzuki ,  Hiromitsu Takagaki ,  Takashi Fujita ,  Atsushi Nakafuji ,  Hiromi Tamura ,  Shin Kayahara ,  Tsuyoshi Sugimoto ,  Takashi Seto ,  Katsuaki Miyawaki

IPC分类号： G03G9/08

CPC分类号： G03G9/08755 ,  G03G9/0806 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/08782 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09733 ,  G03G15/1665 ,  G03G2215/1695

摘要： A process includes developing toner images on a photoconductor, transferring to an intermediate transfer belt and a transferring-and-fixing roller. The toner images are transferred to and fixed to a paper simultaneously while the paper moves between the transferring-and-fixing roller and a pressure roller which is pressed against the transferring-and-fixing roller. After transfer process to the paper, residual toner particles remaining on the transferring-and-fixing roller are removed by a cleaning roller. In order to achieve a cleanability from the transferring-and-fixing roller and prevent the intermediate belt from becoming too high temperature, the elastic modulus of the toner particles measured when the toner particles are heated is greater than the elastic modulus of the toner particles when cooled in a temperature range where the glass transition temperature and 10° C. lower than the melting temperature of the toner particles.

摘要翻译： 一种方法包括在光电导体上显影调色剂图像，转移到中间转印带和转印定影辊。 当纸张在转印定影辊与被压靠在转印辊之间的压力辊之间移动时，调色剂图像被同时转印并固定在纸上。 在转印到纸上之后，残留在转印辊上的调色剂颗粒被清洁辊除去。 为了从转印定影辊获得可清洁性并防止中间带变得太高温度，当调色剂颗粒被加热时测量的调色剂颗粒的弹性模量大于调色剂颗粒的弹性模量 在玻璃化转变温度和比调色剂颗粒的熔融温度低10℃的温度范围内冷却。

公开(公告)号：US20070212126A1

公开(公告)日：2007-09-13

申请号：US11681739

申请日：2007-03-02

申请人： Takashi Seto ,  Takeshi Takemoto ,  Takashi Fujita ,  Katsuaki Miyawaki ,  Hiromitsu Takagaki ,  Shin Kayahara ,  Atsushi Nakafuji ,  Hiromi Tamura ,  Kazumi Suzuki

发明人： Takashi Seto ,  Takeshi Takemoto ,  Takashi Fujita ,  Katsuaki Miyawaki ,  Hiromitsu Takagaki ,  Shin Kayahara ,  Atsushi Nakafuji ,  Hiromi Tamura ,  Kazumi Suzuki

IPC分类号： G03G15/01

CPC分类号： G03G15/167 ,  G03G2215/0119 ,  G03G2215/1695

摘要： A transfer unit for use in an image forming apparatus includes a transfer belt, and a counter member. The transfer belt, having a given circumferential length, receives an un-fixed image, formed of an image developer, from an image carrier at a first nip, which is defined between the transfer belt and the image carrier. The counter member faces the transfer belt to form a second nip with the transfer belt. The un-fixed image is transferred from the transfer belt to a recording medium passing through the second nip. A slack portion is generated in the transfer belt, when a front edge of the recording medium passes through the second nip. The slack portion of the transfer belt being generated in a first portion of the transfer belt returning from the second nip to the first nip.

摘要翻译： 用于图像形成装置的转印单元包括转印带和计数器构件。 具有给定圆周长度的转印带在由转印带和图像载体之间限定的第一辊隙处从图像载体接收由图像显影剂形成的未固定图像。 相对构件面向转印带以与转印带形成第二辊隙。 未固定的图像从转印带传送到通过第二辊隙的记录介质。 当记录介质的前边缘通过第二压区时，在转印带中产生松弛部分。 转印带的松弛部分在转印带的第一部分中从第二辊隙返回到第一辊隙。

公开(公告)号：US07790343B2

公开(公告)日：2010-09-07

申请号：US11669817

申请日：2007-01-31

申请人： Kazumi Suzuki ,  Hiromitsu Takagaki ,  Takashi Fujita ,  Atsushi Nakafuji ,  Hiromi Tamura ,  Shin Kayahara ,  Tsuyoshi Sugimoto ,  Takashi Seto ,  Katsuaki Miyawaki

发明人： Kazumi Suzuki ,  Hiromitsu Takagaki ,  Takashi Fujita ,  Atsushi Nakafuji ,  Hiromi Tamura ,  Shin Kayahara ,  Tsuyoshi Sugimoto ,  Takashi Seto ,  Katsuaki Miyawaki

IPC分类号： G03G9/08

CPC分类号： G03G9/08755 ,  G03G9/0806 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/08782 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09733 ,  G03G15/1665 ,  G03G2215/1695

摘要： A process includes developing toner images on a photoconductor, transferring to an intermediate transfer belt and a transferring-and-fixing roller. The toner images are transferred to and fixed to a paper simultaneously while the paper moves between the transferring-and-fixing roller and a pressure roller which is pressed against the transferring-and-fixing roller. After transfer process to the paper, residual toner particles remaining on the transferring-and-fixing roller are removed by a cleaning roller. In order to achieve a cleanability from the transferring-and-fixing roller and prevent the intermediate belt from becoming too high temperature, the elastic modulus of the toner particles measured when the toner particles are heated is greater than the elastic modulus of the toner particles when cooled in a temperature range where the glass transition temperature and 10° C. lower than the melting temperature of the toner particles.

摘要翻译： 一种方法包括在光电导体上显影调色剂图像，转移到中间转印带和转印定影辊。 当纸张在转印定影辊与被压靠在转印辊之间的压力辊之间移动时，调色剂图像被同时转印并固定在纸上。 在转印到纸上之后，残留在转印辊上的调色剂颗粒被清洁辊除去。 为了从转印定影辊获得可清洁性并防止中间带变得太高温度，当调色剂颗粒被加热时测量的调色剂颗粒的弹性模量大于调色剂颗粒的弹性模量 在玻璃化转变温度和比调色剂颗粒的熔融温度低10℃的温度范围内冷却。

公开(公告)号：US07643767B2

公开(公告)日：2010-01-05

申请号：US11681739

申请日：2007-03-02

申请人： Takashi Seto ,  Takeshi Takemoto ,  Takashi Fujita ,  Katsuaki Miyawaki ,  Hiromitsu Takagaki ,  Shin Kayahara ,  Atsushi Nakafuji ,  Hiromi Tamura ,  Kazumi Suzuki

发明人： Takashi Seto ,  Takeshi Takemoto ,  Takashi Fujita ,  Katsuaki Miyawaki ,  Hiromitsu Takagaki ,  Shin Kayahara ,  Atsushi Nakafuji ,  Hiromi Tamura ,  Kazumi Suzuki

IPC分类号： G03G15/01

CPC分类号： G03G15/167 ,  G03G2215/0119 ,  G03G2215/1695

摘要： A transfer unit for use in an image forming apparatus includes a transfer belt, and a counter member. The transfer belt, having a given circumferential length, receives an un-fixed image, formed of an image developer, from an image carrier at a first nip, which is defined between the transfer belt and the image carrier. The counter member faces the transfer belt to form a second nip with the transfer belt. The un-fixed image is transferred from the transfer belt to a recording medium passing through the second nip. A slack portion is generated in the transfer belt, when a front edge of the recording medium passes through the second nip. The slack portion of the transfer belt being generated in a first portion of the transfer belt returning from the second nip to the first nip.

摘要翻译： 用于图像形成装置的转印单元包括转印带和计数器构件。 具有给定圆周长度的转印带在由转印带和图像载体之间限定的第一辊隙处从图像载体接收由图像显影剂形成的未固定图像。 相对构件面向转印带以与转印带形成第二辊隙。 未固定的图像从转印带传送到通过第二辊隙的记录介质。 当记录介质的前边缘通过第二压区时，在转印带中产生松弛部分。 转印带的松弛部分在转印带的第一部分中从第二辊隙返回到第一辊隙。

公开(公告)号：US07526242B2

公开(公告)日：2009-04-28

申请号：US11521494

申请日：2006-09-15

申请人： Hiromitsu Takagaki ,  Takashi Fujita ,  Atsushi Nakafuji ,  Hirohmi Tamura ,  Hiroyuki Kunii ,  Kohji Ue

发明人： Hiromitsu Takagaki ,  Takashi Fujita ,  Atsushi Nakafuji ,  Hirohmi Tamura ,  Hiroyuki Kunii ,  Kohji Ue

IPC分类号： G03G15/16 ,  G03G15/20 ,  G03G15/00

CPC分类号： G03G15/167 ,  G03G2215/1695

摘要： A first guide member and a second guide member guide a recording medium into a nip between a transfer member and a nip-forming member. The first guide member and the second guide member are arranged so as to form a substantial V-shape with tip of the V-shape being toward the nip. A distance between the first guide member and the second guide member at the tip being equal to or less than 5 millimeters.

摘要翻译： 第一引导构件和第二引导构件将记录介质引导到转印构件和夹持形成构件之间的辊隙中。 第一引导构件和第二引导构件被布置成形成大致V形，其中V形的尖端朝向间隙。 第一引导构件和第二引导构件在尖端处的距离等于或小于5毫米。

公开(公告)号：US20060008302A1

公开(公告)日：2006-01-12

申请号：US11177330

申请日：2005-07-11

申请人： Yukimichi Someya ,  Takashi Fujita ,  Atsushi Nakafuji ,  Katsuhiro Echigo ,  Hiroyuki Kunii ,  Shigeo Kurotaka ,  Hisashi Kikuchi ,  Toshihiko Baba ,  Kohji Ue ,  Hiromitsu Takagaki ,  Hirohmi Tamura

发明人： Yukimichi Someya ,  Takashi Fujita ,  Atsushi Nakafuji ,  Katsuhiro Echigo ,  Hiroyuki Kunii ,  Shigeo Kurotaka ,  Hisashi Kikuchi ,  Toshihiko Baba ,  Kohji Ue ,  Hiromitsu Takagaki ,  Hirohmi Tamura

IPC分类号： G03G15/16

CPC分类号： G03G15/1605 ,  G03G2215/1695

摘要： A transfer-fixing unit for use in an image forming apparatus having an intermediate transfer member and a transfer-fixing unit, which includes a pressure member and a transfer-fixing member. The intermediate transfer member receives a toner image thereon. The transfer-fixing member has a deformable surface layer thereon, and directly receives the toner image from the intermediate transfer member, and transfers and fixes the toner image to a recording medium while deforming the surface layer in response to surface irregularities of the recording medium. The transfer-fixing member forms a nip portion with the pressure member and presses the recording medium at the nip portion when the recording medium passes through the nip portion with a nip time.

摘要翻译： 一种用于具有中间转印部件和转印固定单元的图像形成装置的转印固定单元，其包括压力部件和转印固定部件。 中间转印构件在其上接收调色剂图像。 转印固定构件在其上具有可变形的表面层，并且直接从中间转印构件接收调色剂图像，并且在响应于记录介质的表面不规则性使表面层变形的同时将调色剂图像转印并固定到记录介质。 转印固定构件与压力构件形成夹持部分，并且当记录介质通过夹持部分时，在夹持部分处按压记录介质。