公开(公告)号：US07885591B2

公开(公告)日：2011-02-08

申请号：US11685946

申请日：2007-03-14

申请人： Masahiro Yagi ,  Yoshihiro Fukuhata ,  Shigeru Obata

发明人： Masahiro Yagi ,  Yoshihiro Fukuhata ,  Shigeru Obata

IPC分类号： G03G15/20

CPC分类号： G03G15/206 ,  G03G2215/2009

摘要： A low-heat loss, belt nip-type fixing device achieves good recording medium separation performance without increasing the size of the device, prevents image misalignment, and achieves a high-quality image without placing a major burden on the recording medium. This fixing device comprises a heat-fixing roller having an elastic layer and a heat source; and a pressurizing unit having an elastic member with a flat surface for pressing an endless member. The endless member conveys a recording medium, against the elastic layer. A pressurizing spring biases the elastic member toward the side of the recording medium. Biasing is carried out using the pressurizing spring such that the amount of deformation of the elastic member approaches the saturation region (maximum amount of deformation) inside a region of a nip portion, which is formed between the elastic layer of the heat-fixing roller and the endless member of pressurizing unit, and through which is passed a recording medium carrying an unfixed toner image.

摘要翻译： 低热损失的带夹式固定装置在不增加装置的尺寸，防止图像未对准的情况下实现良好的记录介质分离性能，并且在不对记录介质造成重大负担的情况下实现高质量的图像。 该固定装置包括具有弹性层和热源的热定影辊; 以及具有用于按压环形构件的具有平坦表面的弹性构件的加压单元。 环形构件将记录介质传送到弹性层。 加压弹簧将弹性构件朝向记录介质的侧面偏压。 使用加压弹簧进行偏压，使得弹性构件的变形量接近形成在热定影辊的弹性层和热定影辊的弹性层之间的夹持部的区域内的饱和区域（最大变形量） 加压单元的环形构件，并通过其承载未定影调色剂图像的记录介质。

公开(公告)号：US20100260524A1

公开(公告)日：2010-10-14

申请号：US12753409

申请日：2010-04-02

申请人： Chikara HIRAOKA ,  Yoshihiro Fukuhata

发明人： Chikara HIRAOKA ,  Yoshihiro Fukuhata

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2028 ,  G03G15/206 ,  G03G2215/2009 ,  G03G2215/2035 ,  G03G2215/2061 ,  G03G2215/2064

摘要： A fusing apparatus for fusing a toner image onto a recording medium using heat and pressure includes a fusing roller; an endless pressing belt disposed opposite the fusing roller; and a pressing member for pressing the endless pressing belt onto the fusing roller. A recording medium with a transferred toner image is passed through a fusing nip between the fusing roller and the pressing belt. The fusing roller includes positive and negative crown portions along the axial direction. The pressing member includes convex and concave surface portions along the longitudinal direction. When the pressing member is pressed onto the fusing roller, the positive and negative crown portions of the fusing roller are engaged with the concave and convex surface portions, respectively, of the pressing member. The pressing member exerts a greater pressing force on the fusing roller at a central portion than at an end portion.

摘要翻译： 使用热和压力将调色剂图像定影到记录介质上的定影装置包括定影辊; 设置在定影辊对面的环状压紧带; 以及用于将环形挤压带按压到定影辊上的按压构件。 具有转印的调色剂图像的记录介质通过定影辊和加压带之间的定影辊隙。 定影辊包括沿轴向的正和负的冠部。 按压构件包括沿着纵向方向的凸表面部分和凹面部分。 当按压构件被按压到定影辊上时，定影辊的正和负冠部分别与按压构件的凹凸表面部分接合。 按压构件在中心部分比在端部处对定影辊施加更大的按压力。

公开(公告)号：US07664447B2

公开(公告)日：2010-02-16

申请号：US11832869

申请日：2007-08-02

申请人： Masahiro Yagi ,  Yoshihiro Fukuhata ,  Shigeru Obata

发明人： Masahiro Yagi ,  Yoshihiro Fukuhata ,  Shigeru Obata

IPC分类号： G03G15/20

CPC分类号： G03G15/2053

摘要： A fixing device includes a fixing member of which surface is deformable, a heating unit that heats the fixing member, a pressurizing unit having an endless member and a pressurizing member. The pressurizing member includes an elastic layer and presses the endless member against the fixing member to bring the endless member into pressure contact with the fixing member. The elastic layer has an apparent hardness (ASKER-C) which is larger than that at a point where an apparent hardness starts to change rapidly with respect to a rubber thickness in a load application direction.

摘要翻译： 固定装置包括表面可变形的固定构件，加热固定构件的加热单元，具有环形构件和加压构件的加压单元。 加压构件包括弹性层并将环形构件压靠在固定构件上，以使环形构件与固定构件压力接触。 弹性层的表观硬度（ASKER-C）大于表观硬度相对于载荷施加方向上的橡胶厚度开始急剧变化的程度。

公开(公告)号：US20080013992A1

公开(公告)日：2008-01-17

申请号：US11770959

申请日：2007-06-29

申请人： Yoshihiro Fukuhata ,  Masahiro Yagi ,  Shigeru Obata

发明人： Yoshihiro Fukuhata ,  Masahiro Yagi ,  Shigeru Obata

IPC分类号： G03G15/20

CPC分类号： G03G15/206 ,  G03G2215/2009 ,  G03G2215/2038

摘要： A pressurizing unit includes an elastic member that has an entering portion on a side from where a recording medium enters a nip portion, an exit portion on a side from where the recording medium exits the nip portion, and a center portion between the entering portion and the exit portion. The elastic modulus of the center portion is higher than elastic moduli of the entering portion and the exit portion.

摘要翻译： 加压单元包括弹性构件，该弹性构件在记录介质进入夹持部的一侧具有入口部分，在记录介质离开夹持部的一侧的出口部分，以及入口部分和 出口部分。 中心部分的弹性模量高于进入部分和出口部分的弹性模量。

公开(公告)号：US09720361B2

公开(公告)日：2017-08-01

申请号：US15394372

申请日：2016-12-29

申请人： Yuusuke Furuichi ,  Yoshihiro Fukuhata ,  Tomohiko Fujii

发明人： Yuusuke Furuichi ,  Yoshihiro Fukuhata ,  Tomohiko Fujii

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  F16H7/02 ,  F16H7/08 ,  F16H7/18 ,  F16H2007/185 ,  G03G15/2017 ,  G03G15/2032 ,  G03G15/2064 ,  G03G2215/2038

摘要： A belt device includes an endless belt and a rotary driver contacting an outer circumferential surface of the belt to drive and rotate the belt. An opposed belt support is disposed opposite the rotary driver and in contact with an inner circumferential surface of the belt. A rotary belt support is disposed opposite the rotary driver via the opposed belt support and in contact with the inner circumferential surface of the belt. A belt support holder holds the opposed belt support and the rotary belt support to retain a predetermined interval between the opposed belt support and the rotary belt support. A biasing assembly presses against the belt support holder to move the opposed belt support and the rotary belt support collectively with respect to the rotary driver and bias the opposed belt support against the rotary driver.

公开(公告)号：US20160041511A1

公开(公告)日：2016-02-11

申请号：US14798831

申请日：2015-07-14

申请人： Tomohiko FUJII ,  Masahiro Samei ,  Yoshiharu Takahashi ,  Daisuke Inoue ,  Yoshihiro Fukuhata ,  Minoru Toyoda

发明人： Tomohiko FUJII ,  Masahiro Samei ,  Yoshiharu Takahashi ,  Daisuke Inoue ,  Yoshihiro Fukuhata ,  Minoru Toyoda

IPC分类号： G03G15/20

CPC分类号： G03G15/2025 ,  G03G2215/00531

摘要： An image forming apparatus includes an image forming device to form a cleaning toner image in a cleaning region on a cleaning sheet and a check toner image in a check region on the cleaning sheet. The image forming apparatus further includes a fixing device including a first rotator and a heater to heat the first rotator to a cleaning temperature that is lower than a fixing temperature to which the first rotator is heated in a print job and higher than a cold offset temperature at which toner adheres to the first rotator by cold offset. Each of the cleaning region and the check region has a length greater than a circumferential length of the first rotator. The cleaning region and the check region are disposed at a leading section and a trailing section of the cleaning sheet in a cleaning sheet conveyance direction, respectively.

摘要翻译： 图像形成装置包括图像形成装置，用于在清洁片上的清洁区域中形成清洁调色剂图像，并且在清洁片材上的检查区域中形成检查调色剂图像。 图像形成装置还包括定影装置，其包括第一旋转器和加热器，以将第一旋转器加热至低于在打印作业中加热第一旋转体的定影温度并高于冷偏移温度的清洁温度 调色剂通过冷偏移粘附到第一旋转器。 清洁区域和检查区域中的每一个具有大于第一旋转器的圆周长度的长度。 清洁区域和检查区域分别设置在清洁片材的引导部分和后部清洁片材输送方向上。

公开(公告)号：US08391766B2

公开(公告)日：2013-03-05

申请号：US12873628

申请日：2010-09-01

申请人： Yoshihiro Fukuhata

发明人： Yoshihiro Fukuhata

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G15/206

摘要： A fixing device includes a first member. The first member extends along a first longitudinal axis, and has an external surface whose thickness varies along the first longitudinal axis to define at least one first convex portion and at least one first concave portion. A thickness of the first convex portion is larger than a thickness of the first concave portion. A heating source is disposed in the first member. The heating temperature of an inner circumference side of the first convex portion is higher than the heating temperature of the inner circumference side of the first concave portion.

摘要翻译： 固定装置包括第一构件。 第一构件沿着第一纵向轴线延伸，并且具有外表面，该外表面的厚度沿着第一纵向轴线变化，以限定至少一个第一凸起部分和至少一个第一凹入部分。 第一凸部的厚度大于第一凹部的厚度。 加热源设置在第一构件中。 第一凸部的内周侧的加热温度比第一凹部的内周侧的加热温度高。

公开(公告)号：US08346149B2

公开(公告)日：2013-01-01

申请号：US12686706

申请日：2010-01-13

申请人： Yoshihiro Fukuhata

发明人： Yoshihiro Fukuhata

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/206 ,  G03G2215/2061 ,  G03G2215/2064

摘要： A fixing device includes a first member and a second member. The first member extends along a first longitudinal axis, and has a first elastic layer whose thickness varies along the first longitudinal axis to define at least one first convex portion and at least one first concave portion. The second member extends along a second longitudinal axis parallel to the first longitudinal axis, and has a second elastic layer whose thickness varies along the second longitudinal axis to define at least one second convex portion and at least one second concave portion. At least one of the first and second members is heated, and at least one of the first and second members is pressed against the other, with the first convex portion engaging the second concave portion and the first concave portion engaging the second convex portion, to define a fixing nip therebetween.

摘要翻译： 固定装置包括第一构件和第二构件。 第一构件沿着第一纵向轴线延伸，并且具有第一弹性层，其厚度沿着第一纵向轴线变化以限定至少一个第一凸起部分和至少一个第一凹入部分。 第二构件沿着平行于第一纵向轴线的第二纵向轴线延伸，并且具有第二弹性层，其厚度沿着第二纵向轴线变化以限定至少一个第二凸部和至少一个第二凹部。 第一和第二构件中的至少一个被加热，并且第一和第二构件中的至少一个被压靠在另一个上，其中第一凸部接合第二凹部和与第二凸部接合的第一凹部， 在它们之间限定一个定影辊隙。

公开(公告)号：US20110311283A1

公开(公告)日：2011-12-22

申请号：US13094067

申请日：2011-04-26

申请人： Yoshihiro Fukuhata

发明人： Yoshihiro Fukuhata

IPC分类号： G03G15/20

CPC分类号： G03G15/2057

摘要： A fixing device to fix a toner image on a recording medium, including a pressure roller to press the toner image on the recording medium; an elastically-deformable cylindrical fixing roller to contact the pressure roller to form a nip and transfer the recording medium to the nip to fix the toner image; and a holder to rotatably hold both ends of the fixing roller, wherein the holder is located at least two positions at both sides on an outer circumference of the fixing roller across the longest diameter thereof, and the nip is formed between the two holders at the side of the pressure roller.

摘要翻译： 一种定影装置，用于将调色剂图像固定在记录介质上，包括用于将调色剂图像按压在记录介质上的加压辊; 可弹性变形的圆柱形定影辊，其与压力辊接触以形成压区，并将记录介质传送到辊隙以固定调色剂图像; 以及保持器，用于可旋转地保持定影辊的两端，其中保持器在其最长直径的定影辊的外周上位于两侧的两侧的至少两个位置处，并且在两个保持器之间形成辊隙 侧压辊。

公开(公告)号：US20100272481A1

公开(公告)日：2010-10-28

申请号：US12762689

申请日：2010-04-19

申请人： Atsushi YAMAMOTO ,  Yoshihiro Fukuhata ,  Akira Izutani

发明人： Atsushi YAMAMOTO ,  Yoshihiro Fukuhata ,  Akira Izutani

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G9/0806 ,  G03G9/0821 ,  G03G9/08755 ,  G03G9/08764 ,  G03G15/206 ,  G03G2215/2061 ,  G03G2215/2064

摘要： An image forming method for fixing a toner image on a recording medium by passing the recording medium through a fixing nip defined between a first member and a second member under heat and pressure. The toner has a specific loss elastic modulus. The first and second members extend along respective first and second longitudinal axes, and have respective first and second elastic layers whose thickness vary along the respective first and second longitudinal axes to define at least one convex portion curving outward and at least one concave portion curving inward with respect to each of the respective first and second longitudinal axes. The first convex portion engages the second concave portion and the first concave portion engages the second convex portion, to define the fixing nip therebetween.

摘要翻译： 一种图像形成方法，用于通过在热和压力下通过限定在第一部件和第二部件之间的定影辊隙使记录介质固定在记录介质上。 调色剂具有特定的损耗弹性模量。 第一和第二构件沿着相应的第一和第二纵向轴线延伸，并且具有各自的第一和第二弹性层，其厚度沿相应的第一和第二纵向轴线变化，以限定向外弯曲的至少一个凸起部分和向内弯曲的至少一个凹部 相对于相应的第一和第二纵向轴线中的每一个。 所述第一凸部接合所述第二凹部，所述第一凹部与所述第二凸部接合，以在所述第二凹部之间限定所述定影辊隙。