公开(公告)号：US20180356755A1

公开(公告)日：2018-12-13

申请号：US16004832

申请日：2018-06-11

申请人： Kiwako HIROI ,  Kohichi UTSUNOMIYA ,  Yuusuke FURUICHI

发明人： Kiwako HIROI ,  Kohichi UTSUNOMIYA ,  Yuusuke FURUICHI

IPC分类号： G03G15/20

CPC分类号： G03G15/2032 ,  G03G15/206 ,  G03G2215/2009

摘要： A fixing device includes an endless belt, a pressure rotator that contacts the endless belt, a nip formation pad in the endless belt to form a fixing nip between the endless belt and the pressure rotator, a heater in the endless belt to heat the endless belt, a stay to support the nip formation pad, a contact-separation mechanism that presses the nip formation pad against the pressure rotator in a releasable manner, a holder movable between a nip formation position and a release position to support the stay, and an adjustment mechanism. The holder is provided with a slot to support the heater, and the adjustment mechanism makes a distance between the heater and the nip formation pad when the holder is at the nip formation position larger than a distance between the heater and the nip formation pad when the holder is at the release position.

公开(公告)号：US20170131664A1

公开(公告)日：2017-05-11

申请号：US15295275

申请日：2016-10-17

申请人： Kohichi UTSUNOMIYA ,  Hideo NAGAFUJI ,  Arinobu YOSHIURA ,  Yutaka IKEBUCHI ,  Motoyoshi YAMANO

发明人： Kohichi UTSUNOMIYA ,  Hideo NAGAFUJI ,  Arinobu YOSHIURA ,  Yutaka IKEBUCHI ,  Motoyoshi YAMANO

IPC分类号： G03G15/20

CPC分类号： G03G15/2025 ,  G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes a fixing rotator that is endless and rotatable in a rotation direction and a heater to heat the fixing rotator. A pressure rotator contacts an outer circumferential surface of the fixing rotator. A nip formation pad presses against the pressure rotator via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The nip formation pad includes an upstream portion disposed upstream from the fixing nip in the rotation direction of the fixing rotator. A recess is disposed in the upstream portion of the nip formation pad. A friction reducer is sandwiched between the nip formation pad and the fixing rotator and bears a lubricant.

公开(公告)号：US20200159151A1

公开(公告)日：2020-05-21

申请号：US16690236

申请日：2019-11-21

申请人： Kohichi UTSUNOMIYA ,  Yutaka IKEBUCHI

发明人： Kohichi UTSUNOMIYA ,  Yutaka IKEBUCHI

IPC分类号： G03G15/20

摘要： A fixing device includes a fixing rotator, a heat source, a pressing member, a nip formation member, a reflector, and a support. The heat source is configured to heat the fixing rotator. The pressing member is configured to form a nip with the fixing rotator. The nip formation member is disposed inside a loop of the fixing rotator and opposed to the pressing member to form the nip between the fixing rotator and the pressing member. The reflector is configured to reflect heat from the heat source. The support is configured to secure the reflector. The support is in contact with the reflector at at least one end portion in a longitudinal direction of the support.

公开(公告)号：US20170115610A1

公开(公告)日：2017-04-27

申请号：US15295574

申请日：2016-10-17

申请人： Arinobu YOSHIURA ,  Hideo NAGAFUJI ,  Kohichi UTSUNOMIYA ,  Yutaka IKEBUCHI ,  Motoyoshi YAMANO

发明人： Arinobu YOSHIURA ,  Hideo NAGAFUJI ,  Kohichi UTSUNOMIYA ,  Yutaka IKEBUCHI ,  Motoyoshi YAMANO

IPC分类号： G03G15/20

CPC分类号： G03G15/2025

摘要： A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and a heater that heats the fixing rotator. A nip formation pad is disposed opposite an inner circumferential surface of the fixing rotator. A pressure rotator presses against the nip formation pad via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. A low-friction member is sandwiched between the nip formation pad and the fixing rotator and bears a lubricant that flows in a flow direction. A thermal absorber is mounted on the inner circumferential surface of the fixing rotator. At least one irregular portion, mounted on the thermal absorber, blocks the lubricant flowing in the flow direction.

公开(公告)号：US20160011550A1

公开(公告)日：2016-01-14

申请号：US14793949

申请日：2015-07-08

申请人： Kohichi UTSUNOMIYA ,  Hideo Nagafuji ,  Yuji Arai ,  Arinobu Yoshiura ,  Shohei Saito ,  Qifeng Cui ,  Yutaka Ikebuchi ,  Motoyoshi Yamano

发明人： Kohichi UTSUNOMIYA ,  Hideo Nagafuji ,  Yuji Arai ,  Arinobu Yoshiura ,  Shohei Saito ,  Qifeng Cui ,  Yutaka Ikebuchi ,  Motoyoshi Yamano

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2039 ,  G03G15/2042 ,  G03G15/2064

摘要： A fixing device includes an endless fixing belt, fixing-belt holding members which hold the fixing belt at opposite ends, a pressure member to be brought into contact with the fixing belt, a nip forming member arranged inside the fixing belt to form a nip area by contacting the pressure member with the fixing belt, a nip supporting member, side plates where the fixing-belt holding members and the nip supporting member are fixed, and a pressing mechanism which presses the pressure member against the nip forming member. The nip forming member includes at least three layers including a heat absorbing layer contacting the nip supporting member. With no load applied, the nip supporting member assumes a shape protruding at longitudinal center toward the pressure member and is in contact with the nip forming member while having the shape protruding at the center portion.

摘要翻译： 定影装置包括环形定影带，固定带保持构件，其在相对端保持定影带，与定影带接触的压力构件，设置在定影带内部的辊隙形成构件，以形成咬合区域 通过使压力构件与定影带接触，夹持支撑构件，定影带保持构件和夹持支撑构件固定的侧板以及将压力构件压靠在辊隙形成构件上的按压机构。 辊隙形成构件包括至少三层，包括与辊隙支撑构件接触的吸热层。 在没有载荷的情况下，夹持支撑构件呈纵向中心朝向压力构件突出的形状，并且与中心部分具有突出的形状相接触。

公开(公告)号：US20160011548A1

公开(公告)日：2016-01-14

申请号：US14790297

申请日：2015-07-02

申请人： Kohichi UTSUNOMIYA ,  Hideo NAGAFUJI ,  Yuji ARAI ,  Arinobu YOSHIURA ,  Qifeng CUI ,  Shohei SAITO ,  Yutaka IKEBUCHI ,  Motoyoshi YAMANO

发明人： Kohichi UTSUNOMIYA ,  Hideo NAGAFUJI ,  Yuji ARAI ,  Arinobu YOSHIURA ,  Qifeng CUI ,  Shohei SAITO ,  Yutaka IKEBUCHI ,  Motoyoshi YAMANO

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G15/206 ,  G03G15/2064 ,  G03G2215/2035

摘要： A device includes a fixing belt, a holder that holds the fixing belt, a pressing member that comes in contact with the fixing belt, a nip-forming-member arranged inside the fixing belt, that forms a nip by coming in contact with the pressing member, a supporting member that supports the nip-forming-member, a side plate to which the nip-forming-member and the supporting member are fixed, and a pressing mechanism that presses a pressing roller to the nip-forming-member via the fixing belt. The supporting member includes at least two plates. The two plates are separated from each other near a contact portion where the plates come in contact with the nip-forming-member. At least a part of each of the plates is a flat surface parallel to a direction of a load applied by the pressing mechanism. Portions of the two plates on a side distant from the contact portion are joined together.

摘要翻译： 一种装置包括定影带，固定定影带的保持器，与定影带接触的按压构件，布置在定影带内部的夹持形成构件，其与压制件接触形成辊隙 构件，支撑夹持形成构件的支撑构件，夹持形成构件和支撑构件被固定的侧板;以及按压机构，其通过该夹持构件与压区成形构件 定影带 支撑构件包括至少两个板。 两个板在接触部分附近彼此分开，其中板与辊隙形成部件接触。 每个板的至少一部分是平行于由按压机构施加的负载方向的平坦表面。 两个板的远离接触部分的一部分接合在一起。

公开(公告)号：US20150261157A1

公开(公告)日：2015-09-17

申请号：US14657656

申请日：2015-03-13

申请人： Motoyoshi YAMANO ,  Kohichi UTSUNOMIYA ,  Hiromasa TAKAGI ,  Kenji ISHII ,  Takayuki SEKI ,  Keitaro SHOJI ,  Hideo NAGAFUJI ,  Yuji ARAI ,  Arinobu YOSHIURA ,  Shohei SAITO ,  Qifeng CUI ,  Yutaka IKEBUCHI

发明人： Motoyoshi YAMANO ,  Kohichi UTSUNOMIYA ,  Hiromasa TAKAGI ,  Kenji ISHII ,  Takayuki SEKI ,  Keitaro SHOJI ,  Hideo NAGAFUJI ,  Yuji ARAI ,  Arinobu YOSHIURA ,  Shohei SAITO ,  Qifeng CUI ,  Yutaka IKEBUCHI

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2028 ,  G03G15/2042 ,  G03G2215/2035

摘要： A fixing device includes: a fixing member that is rotatable and in an endless shape; a heat source that heats the fixing member; a nip forming member that is arranged inside the fixing member; and a pressurizing member that is pressurized to be in contact with the nip forming member through the fixing member, to form a fixing nip. The fixing device fixes an unfixed image on a recording medium by passing the recording medium that carries the unfixed image through the fixing nip. The nip forming member includes a base layer, and a high thermal-conductive layer that is arranged on a surface layer of the base layer on a fixing nip side, and that has higher thermal conductivity than the base layer, and in the high thermal-conductive layer, a low thermal-conductive portion is arranged near an end portion in an axial direction of the fixing member.

摘要翻译： 定影装置包括：可旋转且呈环状的固定构件; 加热固定部件的热源; 布置在固定部件内的辊隙形成部件; 以及加压部件，其经由所述固定部件加压而与所述辊隙形成部件接触，形成定影辊隙。 定影装置通过使携带未定影图像的记录介质通过定影辊隙将未定影图像固定在记录介质上。 辊隙形成构件包括基底层和布置在定影辊隙侧的基底层的表面层上并且具有比基底层更高的热导率的高导热层， 导电层，低导热部分设置在固定构件的轴向方向上的端部附近。

公开(公告)号：US20150261147A1

公开(公告)日：2015-09-17

申请号：US14657406

申请日：2015-03-13

申请人： Yuji ARAI ,  Hideo NAGAFUJI ,  Kohichi UTSUNOMIYA ,  Arinobu YOSHIURA ,  Shohei SAITO ,  Qifeng CUI ,  Yutaka IKEBUCHI ,  Motoyoshi YAMANO

发明人： Yuji ARAI ,  Hideo NAGAFUJI ,  Kohichi UTSUNOMIYA ,  Arinobu YOSHIURA ,  Shohei SAITO ,  Qifeng CUI ,  Yutaka IKEBUCHI ,  Motoyoshi YAMANO

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G2215/2035

摘要： A fixing device includes a fixing member configured to be revolvable while being heated by a heat source; a counter rotator configured to form a nip between the fixing member and the counter rotator by applying a pressure to the fixing member in a contact state with the fixing member; a shield member disposed inside the fixing member to partially shield heat from the heat source; and a holding member attached to an end of the fixing member. The shield member includes a spacer configured to define a clearance to allow the holding member to be inserted into the fixing member from an end of the fixing member, the clearance being between the shield member and an inner surface of the end of the fixing member.

摘要翻译： 定影装置包括：固定构件，被构造成在被热源加热的同时可旋转; 配置为通过在与所述固定构件接触的状态下对所述固定构件施加压力而在所述固定构件和所述反转子之间形成辊隙的反转器; 屏蔽构件，其设置在所述固定构件的内部，以部分地屏蔽来自所述热源的热量; 以及附接到所述固定构件的端部的保持构件。 屏蔽构件包括间隔件，其构造成限定间隙，以允许保持构件从固定构件的端部插入到固定构件中，间隙在屏蔽构件和固定构件的端部的内表面之间。

公开(公告)号：US20140294461A1

公开(公告)日：2014-10-02

申请号：US14211741

申请日：2014-03-14

申请人： Tetsuo TOKUDA ,  Naoto SUZUKI ,  Kohichi UTSUNOMIYA

发明人： Tetsuo TOKUDA ,  Naoto SUZUKI ,  Kohichi UTSUNOMIYA

IPC分类号： G03G15/20

CPC分类号： G03G15/2042 ,  G03G15/2017 ,  G03G15/2039 ,  G03G15/2053 ,  G03G15/2057 ,  G03G2215/0132 ,  G03G2215/2032

摘要： A fixing device includes an exciting coil and a heat generator disposed opposite the exciting coil. The heat generator includes a heat generation layer disposed opposite the exciting coil to generate heat by a magnetic flux from the exciting coil and a temperature sensitive magnetic body disposed opposite the exciting coil via the heat generation layer to obtain and lose magnetism at a temperature defined by a Curie temperature by composition adjustment to selectively create a heating region and a non-heating region of the heat generation layer. A degausser is disposed opposite the heat generator and made of a non-magnetic material having an electrical resistivity smaller than that of the temperature sensitive magnetic body. A holder contacting and supporting the degausser is disposed inboard from a lateral edge of the degausser and outboard from a lateral end of the exciting coil in a longitudinal direction of the degausser.

摘要翻译： 定影装置包括激励线圈和与激磁线圈相对设置的发热体。 发热体包括与励磁线圈相对设置的发热层，用于通过来自励磁线圈的磁通产生热量，以及通过发热层与励磁线圈相对设置的温度敏感磁体，以在由 通过组成调整来选择居里温度以选择性地产生发热层的加热区域和非加热区域。 放热器与热发生器相对设置并且由具有小于温度敏感磁体的电阻率的非磁性材料制成。 接触和支撑除雾器的保持器沿着除雾器的纵向方向从排气装置的侧边缘和从励磁线圈的横向端部外侧设置在内侧。

公开(公告)号：US20120269544A1

公开(公告)日：2012-10-25

申请号：US13430004

申请日：2012-03-26

申请人： Kiyonori TSUDA ,  Hideo YOSHIZAWA ,  Kohichi UTSUNOMIYA ,  Takuzi YONEDA ,  Yutaka TAKAHASHI ,  Emi KITA ,  Yuki OSHIKAWA

发明人： Kiyonori TSUDA ,  Hideo YOSHIZAWA ,  Kohichi UTSUNOMIYA ,  Takuzi YONEDA ,  Yutaka TAKAHASHI ,  Emi KITA ,  Yuki OSHIKAWA

IPC分类号： G03G21/18 ,  G03G15/08

CPC分类号： G03G15/0942

摘要： A development device includes a development casing, a developer bearer disposed facing a latent image bearer through an opening formed in the development casing, a magnetic field generator, a developer regulator disposed facing the developer bearer, a first seal member to cover a clearance between the latent image bearer and a rim of the development casing upstream from the opening, and a second seal member. The first seal member includes a first end portion fixed to the rim of the development casing and a second end portion in contact with the latent image bearer, and the second seal member includes a first end portion fixed to an inner face of the development casing farther from the latent image bearer than the first seal member, and a second end portion hanging to contact the developer carried on the developer bearer downstream from the developer regulator.

摘要翻译： 显影装置包括显影壳体，通过形成在显影壳体中的开口面向潜像载体设置的显影剂载体，磁场发生器，与显影剂载体相对设置的显影剂调节器，第一密封构件， 潜像承载体和开口壳体的边缘，以及第二密封构件。 第一密封构件包括固定到显影壳体的边缘的第一端部和与潜像载体接触的第二端部，并且第二密封构件包括固定到显影壳体的内表面的第一端部 从第一密封构件的潜像载体和与显影剂调节器下游显影剂载体接触的显影剂悬挂的第二端部。