公开(公告)号：US20090274477A1

公开(公告)日：2009-11-05

申请号：US12434223

申请日：2009-05-01

申请人： Masami OKAMOTO ,  Jun Okamoto ,  Kazuo Suno ,  Kenji Nozawa ,  Naoto Suzuki ,  Syoichi Kaneko ,  Yoshihiro Sonohara ,  Keisuke Kubota ,  Takashi Kagami ,  Hiroyuki Shimada

发明人： Masami OKAMOTO ,  Jun Okamoto ,  Kazuo Suno ,  Kenji Nozawa ,  Naoto Suzuki ,  Syoichi Kaneko ,  Yoshihiro Sonohara ,  Keisuke Kubota ,  Takashi Kagami ,  Hiroyuki Shimada

IPC分类号： G03G15/20

CPC分类号： G03G15/2064 ,  G03G15/2039 ,  G03G15/205 ,  G03G15/5004 ,  G03G15/5029 ,  G03G2215/2029

摘要： A fixing device includes a rotatable first nip formation member, a rotatable second nip formation member, a first heater, a second heater, and a controller. The second nip formation member is provided under the first nip formation member to contact the first nip formation member to form a fixing nip portion between the first nip formation member and the second nip formation member. The first heater heats the first nip formation member. The second heater heats the second nip formation member. The controller supplies a portion of power to the second heater and the remainder of power to the first heater when a plurality of sheets having a sheet weight not greater than about 100 g/m2 passes through the fixing nip portion continuously.

摘要翻译： 定影装置包括可旋转的第一压合形成构件，可旋转的第二压合形成构件，第一加热器，第二加热器和控制器。 第二辊隙形成构件设置在第一辊隙形成构件下方以接触第一辊隙形成构件，以在第一辊隙形成构件和第二辊隙形成构件之间形成定影夹持部。 第一加热器加热第一辊隙形成构件。 第二加热器加热第二压区形成构件。 当具有不大于约100g / m 2的纸张重量的多个片材连续通过定影夹持部分时，控制器向第二加热器提供一部分电力，剩余的电力提供给第一加热器。

公开(公告)号：US20180299809A1

公开(公告)日：2018-10-18

申请号：US16010625

申请日：2018-06-18

申请人： Seiji Saitoh ,  Keisuke Kubota ,  Masami Okamoto ,  Kenji Nozawa ,  Fumihiro Hirose ,  Kensuke Yamaji ,  Shuutaroh Yuasa ,  Yuuki Kikushima ,  Kaori Hemmi ,  Yuuta Kanda

发明人： Seiji Saitoh ,  Keisuke Kubota ,  Masami Okamoto ,  Kenji Nozawa ,  Fumihiro Hirose ,  Kensuke Yamaji ,  Shuutaroh Yuasa ,  Yuuki Kikushima ,  Kaori Hemmi ,  Yuuta Kanda

IPC分类号： G03G15/20

摘要： A separation member that is used to separate a conveyance object from two rotation members, the conveyance object having been sent out from a nip that is formed by the two rotation members that are in contact with one another, the separation member includes a wavy part directed toward the nip and inclined from a normal to a center line of the two rotation members at a predetermined angle. The wavy part covers a contact zone where the conveyance object can come into contact with the separation member along a conveyance direction and along a width direction of the conveyance object, and the wavy part has a plurality of depressions parallel to each other and extending in a direction inclined from the conveyance direction and inclined from the width direction, at least two of the depressions overlapping along the conveyance direction.

公开(公告)号：US20150253708A1

公开(公告)日：2015-09-10

申请号：US14640768

申请日：2015-03-06

申请人： Fumihiro HIROSE ,  Masami Okamoto ,  Keisuke Kubota ,  Kenji Nozawa ,  Yuuki Kikushima ,  Yoshikuni Sasaki ,  Kensuke Yamaji ,  Shuutaroh Yuasa ,  Kaori Hemmi

发明人： Fumihiro HIROSE ,  Masami Okamoto ,  Keisuke Kubota ,  Kenji Nozawa ,  Yuuki Kikushima ,  Yoshikuni Sasaki ,  Kensuke Yamaji ,  Shuutaroh Yuasa ,  Kaori Hemmi

IPC分类号： G03G15/20

CPC分类号： G03G15/2085 ,  G03G15/2028 ,  G03G2215/2032

摘要： A fixing device includes a fixing belt stretched taut across a fixing rotator and a support rotator. A pressure rotator is pressed against the fixing rotator via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium bearing a toner image is conveyed. The pressure rotator includes a recess defining an outer diameter of each lateral end of the pressure rotator in an axial direction thereof that is greater than an outer diameter of a center of the pressure rotator in the axial direction thereof A first separator is disposed downstream from the fixing nip in a recording medium conveyance direction and contacts an inner circumferential surface of the fixing belt. The first separator is isolated from the pressure rotator and includes a projection disposed opposite the recess of the pressure rotator.

摘要翻译： 定影装置包括拉伸在固定旋转体上的定影带和支撑旋转体。 压力旋转器经由定影带压靠固定旋转器，以在定影带和压力旋转器之间形成定影辊隙，通过该定影辊将承载调色剂图像的记录介质输送到该定影辊。 压力旋转器包括限定压力旋转体的每个侧端的外径在其轴向方向上的凹部，其大于压力旋转体的轴向方向的中心的外径。第一分离器设置在 在记录介质输送方向上固定夹持部，并与定影带的内周面接触。 第一分离器与压力旋转器隔离，并且包括与压力旋转器的凹部相对设置的突起。

公开(公告)号：US09939761B2

公开(公告)日：2018-04-10

申请号：US14924206

申请日：2015-10-27

申请人： Kenji Nozawa ,  Masahiko Satoh ,  Masami Okamoto ,  Keisuke Kubota ,  Yuuki Kikushima ,  Shuutaroh Yuasa ,  Fumihiro Hirose ,  Kensuke Yamaji ,  Kaori Hemmi

发明人： Kenji Nozawa ,  Masahiko Satoh ,  Masami Okamoto ,  Keisuke Kubota ,  Yuuki Kikushima ,  Shuutaroh Yuasa ,  Fumihiro Hirose ,  Kensuke Yamaji ,  Kaori Hemmi

IPC分类号： G03G15/20 ,  G03G15/00 ,  G03G21/16

CPC分类号： G03G15/2028 ,  G03G15/2017 ,  G03G15/2064 ,  G03G15/6573 ,  G03G21/1685 ,  G03G2215/2029 ,  G03G2215/2038

摘要： A fixing device includes an endless fixing belt stretched taut across a first roller and a second roller and rotatable in a predetermined direction of rotation. A pressure rotator is pressed against the first roller via the fixing belt to form a fixing nip between the pressure rotator and the fixing belt, through which a recording medium is conveyed. A separation aid, disposed downstream from the fixing nip in the direction of rotation of the fixing belt to separate the recording medium from the fixing belt, includes a contact face contacting an inner circumferential surface of the fixing belt and a bulge disposed at a center of the contact face in a longitudinal direction of the separation aid. The bulge projects toward the inner circumferential surface of the fixing belt relative to each lateral end of the contact face in the longitudinal direction of the separation aid.

公开(公告)号：US09316979B2

公开(公告)日：2016-04-19

申请号：US14632523

申请日：2015-02-26

申请人： Kenji Nozawa ,  Masami Okamoto ,  Yoshikuni Sasaki ,  Yuuki Kikushima ,  Fumihiro Hirose ,  Keisuke Kubota ,  Shuutaroh Yuasa ,  Kaori Hemmi

发明人： Kenji Nozawa ,  Masami Okamoto ,  Yoshikuni Sasaki ,  Yuuki Kikushima ,  Fumihiro Hirose ,  Keisuke Kubota ,  Shuutaroh Yuasa ,  Kaori Hemmi

IPC分类号： G03G15/20

CPC分类号： G03G15/2085 ,  G03G15/2025 ,  G03G15/2028 ,  G03G15/2053 ,  G03G2215/2032

摘要： A fixing device includes a first roller contacting a fixing belt to generate a rotation friction force therebetween to rotate the fixing belt and a second roller contacting the fixing belt to exert a first inhibition force to the fixing belt in a direction opposite a direction of rotation of the fixing belt. A separation aid is disposed downstream from a fixing nip formed between the fixing belt and a pressure rotator in the direction of rotation of the fixing belt to decrease a curvature of the fixing belt and exert a second inhibition force to the fixing belt in the direction opposite the direction of rotation of the fixing belt. The second inhibition force is added to the first inhibition force to obtain a combined inhibition force that is smaller than the rotation friction force between the fixing belt and the first roller.

摘要翻译： 定影装置包括：第一辊，其与定影带接触以在其间产生旋转摩擦力，以使定影带旋转;以及与定影带接触的第二辊，沿着与定影带的旋转方向相反的方向向定影带施加第一抑制力 定影带。 分离助剂被设置在定影带和压力旋转体之间形成在定影带的旋转方向上的定影辊隙的下游，以减小定影带的曲率，并沿相反方向向定影带施加第二抑制力 定影带的旋转方向。 将第二抑制力添加到第一抑制力以获得小于定影带和第一辊之间的旋转摩擦力的组合抑制力。

公开(公告)号：US09268276B2

公开(公告)日：2016-02-23

申请号：US14640768

申请日：2015-03-06

申请人： Fumihiro Hirose ,  Masami Okamoto ,  Keisuke Kubota ,  Kenji Nozawa ,  Yuuki Kikushima ,  Yoshikuni Sasaki ,  Kensuke Yamaji ,  Shuutaroh Yuasa ,  Kaori Hemmi

发明人： Fumihiro Hirose ,  Masami Okamoto ,  Keisuke Kubota ,  Kenji Nozawa ,  Yuuki Kikushima ,  Yoshikuni Sasaki ,  Kensuke Yamaji ,  Shuutaroh Yuasa ,  Kaori Hemmi

IPC分类号： G03G15/20

CPC分类号： G03G15/2085 ,  G03G15/2028 ,  G03G2215/2032

摘要： A fixing device includes a fixing belt stretched taut across a fixing rotator and a support rotator. A pressure rotator is pressed against the fixing rotator via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium bearing a toner image is conveyed. The pressure rotator includes a recess defining an outer diameter of each lateral end of the pressure rotator in an axial direction thereof that is greater than an outer diameter of a center of the pressure rotator in the axial direction thereof. A first separator is disposed downstream from the fixing nip in a recording medium conveyance direction and contacts an inner circumferential surface of the fixing belt. The first separator is isolated from the pressure rotator and includes a projection disposed opposite the recess of the pressure rotator.

摘要翻译： 定影装置包括拉伸在固定旋转体上的定影带和支撑旋转体。 压力旋转器经由定影带压靠固定旋转器，以在定影带和压力旋转器之间形成定影辊隙，通过该定影辊将承载调色剂图像的记录介质输送到该定影辊。 压力旋转器包括限定压力旋转体的各个侧端的轴向方向上的外径的凹部，其大于压力旋转体的轴向的中心的外径。 第一分离器在记录介质输送方向上设置在定影辊隙的下游，并与定影带的内周面接触。 第一分离器与压力旋转器隔离，并且包括与压力旋转器的凹部相对设置的突起。

公开(公告)号：US09389560B2

公开(公告)日：2016-07-12

申请号：US14829947

申请日：2015-08-19

申请人： Fumihiro Hirose ,  Masami Okamoto ,  Kenji Nozawa ,  Yuuki Kikushima ,  Kensuke Yamaji ,  Keisuke Kubota ,  Shuutaroh Yuasa ,  Kaori Hemmi

发明人： Fumihiro Hirose ,  Masami Okamoto ,  Kenji Nozawa ,  Yuuki Kikushima ,  Kensuke Yamaji ,  Keisuke Kubota ,  Shuutaroh Yuasa ,  Kaori Hemmi

IPC分类号： G03G15/20

CPC分类号： G03G15/2085 ,  G03G15/2028

摘要： A fixing device includes a guide disposed downstream from a fixing nip formed between a fixing rotator and a pressure rotator, through which a recording medium is conveyed. A pressure rotator side separator, disposed downstream from the fixing nip in a recording medium conveyance direction, includes an opposed tip disposed opposite an outer circumferential surface of the pressure rotator and a separation-conveyance face that separates the recording medium from the pressure rotator. The opposed tip and the separation-conveyance face define a hypothetical circle having a curvature not smaller than 1/20 that intersects a guide face of the guide at an intersection at which a hypothetical tangent is tangent to the hypothetical circle. The hypothetical tangent and the guide face define a downstream intersection angle that is downstream from the hypothetical tangent in the recording medium conveyance direction and is greater than 90 degrees.

摘要翻译： 定影装置包括引导件，该引导件设置在固定旋转器和压力旋转器之间形成的定影夹持器的下游，记录介质通过该定影夹持器被传送。 压力旋转器侧分离器，其设置在记录介质输送方向上的定影辊隙的下游，包括与压力旋转体的外周面相对设置的相对的末端，以及将记录介质与压力旋转体分离的分离输送面。 相对的末端和分离 - 传送面限定了假想圆，该假想圆具有不小于1/20的曲率，该曲率在假想切线与假想圆相切的交点处与导向件的导向面相交。 假设的切线和引导面定义在记录介质输送方向上的假想切线下游的下游交叉角，并且大于90度。

公开(公告)号：US09244431B2

公开(公告)日：2016-01-26

申请号：US14645202

申请日：2015-03-11

申请人： Yuuki Kikushima ,  Masami Okamoto ,  Keisuke Kubota ,  Kenji Nozawa ,  Yoshikuni Sasaki ,  Fumihiro Hirose ,  Kensuke Yamaji ,  Shuutaroh Yuasa ,  Kaori Hemmi

发明人： Yuuki Kikushima ,  Masami Okamoto ,  Keisuke Kubota ,  Kenji Nozawa ,  Yoshikuni Sasaki ,  Fumihiro Hirose ,  Kensuke Yamaji ,  Shuutaroh Yuasa ,  Kaori Hemmi

IPC分类号： G03G15/20 ,  G03G21/20

CPC分类号： G03G21/206 ,  G03G15/2017 ,  G03G15/2039 ,  G03G2215/2032

摘要： A fixing device includes an elastic rotator and a cooler disposed opposite the rotator to cool the rotator with cooling air. A mover contacts and moves the rotator to a first position where the rotator is disposed opposite the cooler with an increased first interval therebetween and a second position where the rotator is disposed opposite the cooler with a decreased second interval therebetween. A rectification plate is movably mounted on the cooler to contact the rotator constantly to guide the cooling air to the cooler.

摘要翻译： 定影装置包括弹性旋转器和与转子相对设置的冷却器，用冷却空气冷却转子。 移动器接触并将旋转体移动到第一位置，在第一位置，旋转体与冷却器相对设置，其间具有增加的第一间隔，以及第二位置，其中旋转体与冷却器相对设置，其间具有减小的第二间隔。 整流板可移动地安装在冷却器上，以恒定地接触转子以将冷却空气引导到冷却器。

公开(公告)号：US10012936B2

公开(公告)日：2018-07-03

申请号：US15447600

申请日：2017-03-02

申请人： Kensuke Yamaji ,  Keisuke Kubota ,  Seiji Saitoh ,  Masami Okamoto ,  Fumihiro Hirose ,  Shuutaroh Yuasa ,  Kenji Nozawa ,  Kaori Hemmi ,  Jun Ogino ,  Yuuta Kanda

发明人： Kensuke Yamaji ,  Keisuke Kubota ,  Seiji Saitoh ,  Masami Okamoto ,  Fumihiro Hirose ,  Shuutaroh Yuasa ,  Kenji Nozawa ,  Kaori Hemmi ,  Jun Ogino ,  Yuuta Kanda

IPC分类号： G03G15/20

CPC分类号： G03G15/206 ,  G03G15/2017 ,  G03G15/2028 ,  G03G2215/0129 ,  G03G2215/2032 ,  G03G2215/2041

摘要： A fixing device includes a fixing belt that is endless and rotatable in a rotation direction and a nip former stretching the fixing belt and including an elastic layer as a surface layer. A pressure rotator presses against the nip former via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium is conveyed. A presser is disposed downstream from an exit of the fixing nip in a recording medium conveyance direction. The presser brings the fixing belt into contact with the pressure rotator.

公开(公告)号：US09733600B2

公开(公告)日：2017-08-15

申请号：US15069457

申请日：2016-03-14

申请人： Kenji Nozawa ,  Masami Okamoto ,  Yuuki Kikushima ,  Keisuke Kubota ,  Shuutaroh Yuasa ,  Kaori Hemmi

发明人： Kenji Nozawa ,  Masami Okamoto ,  Yuuki Kikushima ,  Keisuke Kubota ,  Shuutaroh Yuasa ,  Kaori Hemmi

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/0129 ,  G03G2215/2032

摘要： A fixing device includes a fixing belt looped over a first roller and a second roller and rotatable in a predetermined direction of rotation and a pressure rotator to press against the first roller via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator. A separation aid, disposed downstream from the fixing nip in the direction of rotation of the fixing belt, contacts an inner circumferential surface of the fixing belt to decrease a radius of curvature of the fixing belt. A polishing roller, disposed downstream from the separation aid and upstream from the second roller in the direction of rotation of the fixing belt, contacts an outer circumferential surface of the fixing belt. An opposed roller, disposed opposite the polishing roller via the fixing belt, forms a polishing nip between the polishing roller and the fixing belt.