公开(公告)号：US09964904B2

公开(公告)日：2018-05-08

申请号：US14226110

申请日：2014-03-26

申请人： Yuuki Oka ,  Yukari Isoe ,  Motokazu Hasegawa

发明人： Yuuki Oka ,  Yukari Isoe ,  Motokazu Hasegawa

IPC分类号： G03G15/20

CPC分类号： G03G15/2053

摘要： A fixing device includes a fixing member, which includes heat-generating layer, and an induction heater to inductively heat the fixing member. The induction heater includes an excitation coil disposed facing an outer circumferential surface of the fixing member to generate a magnetic flux, a ferromagnetic core assembly containing a ferromagnetic core to form a magnetic path to direct the magnetic flux generated by the excitation coil to the fixing member, and a holder to hold the excitation coil and the ferromagnetic core assembly. The ferromagnetic core is insert-molded in and covered by the holder. The holder has a plurality of spherical marks created by a plurality of stabilizing members each having a spherical tip to stabilize the ferromagnetic core in a mold.

公开(公告)号：US09128449B2

公开(公告)日：2015-09-08

申请号：US14314112

申请日：2014-06-25

申请人： Masataka Akaishi ,  Tsuyoshi Ueno ,  Motokazu Hasegawa ,  Yuuki Oka

发明人： Masataka Akaishi ,  Tsuyoshi Ueno ,  Motokazu Hasegawa ,  Yuuki Oka

IPC分类号： G03G15/00 ,  G03G15/20

CPC分类号： G03G15/80 ,  G03G15/2014 ,  G03G15/2042 ,  G03G15/2053

摘要： A fixing device includes a heating body; first and second coils for induction heating that heat the heating body by an induction heating method; a first switching element connected to the first coil for induction heating; a second switching element connected to the second coil for induction heating; a driving signal transmission unit that sends a first drive signal to the first switching element and a second drive signal to the second switching element so that the first switching element and the second switching element operate at the same timing to apply a first input voltage to the first coil for induction heating and a second input voltage to the second coil for induction heating; and a voltage drop unit that steps down the first input voltage applied to the first coil for induction heating so that the first input voltage is lower than the second input voltage.

摘要翻译： 定影装置包括加热体; 用于通过感应加热方法加热加热体的感应加热用的第一和第二线圈; 连接到用于感应加热的第一线圈的第一开关元件; 连接到用于感应加热的第二线圈的第二开关元件; 驱动信号传输单元，其向第一开关元件发送第一驱动信号和向第二开关元件发送第二驱动信号，使得第一开关元件和第二开关元件在相同的定时工作，以将第一输入电压施加到 用于感应加热的第一线圈和用于感应加热的第二线圈的第二输入电压; 以及降压单元，其降低施加到第一线圈的感应加热的第一输入电压，使得第一输入电压低于第二输入电压。

公开(公告)号：US09063487B2

公开(公告)日：2015-06-23

申请号：US14168179

申请日：2014-01-30

申请人： Yukari Isoe ,  Motokazu Hasegawa ,  Masanobu Yamagata

发明人： Yukari Isoe ,  Motokazu Hasegawa ,  Masanobu Yamagata

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2032

摘要： A fixing device includes a rotatable fixing member, a pressing member, and an induction heater. The induction heater includes an excitation coil, ferromagnetic cores, and a holder. The ferromagnetic cores include multiple arch cores and multiple side cores. The multiple arch cores are disposed facing an outer surface of a heat generation layer with the excitation coil interposed therebetween. The multiple side cores are disposed outside the excitation coil in a longitudinal direction of the induction heater so as to face both ends of each of the multiple arch cores. The multiple side cores are integrally inserted in the holder. The holder includes a spacer. The spacer contains a resin material used in the holder and provided in a close-facing portion located between at least one of the multiple arch cores and at least one of the multiple side cores to form a gap.

摘要翻译： 定影装置包括可旋转的固定构件，按压构件和感应加热器。 感应加热器包括励磁线圈，铁磁芯和支架。 铁磁芯包括多个拱芯和多个侧芯。 多个拱芯被设置成面对发热层的外表面，其间插入有激励线圈。 多个侧芯在感应加热器的纵向方向上设置在激励线圈的外侧，以便面对多个拱形芯中的每一个的两端。 多个侧芯一体地插入保持器中。 支架包括间隔件。 间隔物包含在保持器中使用的树脂材料，并且设置在位于多个拱芯中的至少一个与多个侧芯之中的至少一个之间的紧密相邻部分中以形成间隙。

公开(公告)号：US09002251B2

公开(公告)日：2015-04-07

申请号：US14182878

申请日：2014-02-18

申请人： Motokazu Hasegawa ,  Susumu Matsusaka ,  Yukari Isoe

发明人： Motokazu Hasegawa ,  Susumu Matsusaka ,  Yukari Isoe

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2032

摘要： A fixing device includes a fixing member including a heat generator and an induction heater to heat the fixing member by electromagnetic induction. The induction heater includes an excitation coil, a ferromagnetic core to form a magnetic path to direct magnetic flux arising from the excitation coil to the fixing member, and a holder to hold the excitation coil and the ferromagnetic core. The holder has a surface facing the heat generator. The surface has a plurality of slits extending parallel to a direction of rotation of the fixing member. The ferromagnetic core is coupled to the holder and covers an open bottom portion of each slit of the plurality of slits to form a plurality of bottomed grooves.

摘要翻译： 定影装置包括：固定构件，其包括发热体和感应加热器，用于通过电磁感应加热固定构件。 感应加热器包括励磁线圈，铁磁芯，以形成将由励磁线圈产生的磁通量引导到固定部件的磁路，以及保持激励线圈和铁磁芯的保持器。 支架具有面向发热体的表面。 表面具有平行于固定构件的旋转方向延伸的多个狭缝。 铁磁芯被连接到保持器上并且覆盖多个狭缝的每个狭缝的开放底部以形成多个有底槽。

公开(公告)号：US20120155933A1

公开(公告)日：2012-06-21

申请号：US13305015

申请日：2011-11-28

申请人： Motokazu Hasegawa ,  Susumu Matsusaka ,  Tsuyoshi Hashiyada

发明人： Motokazu Hasegawa ,  Susumu Matsusaka ,  Tsuyoshi Hashiyada

IPC分类号： G03G15/20

CPC分类号： G03G15/2007 ,  G03G2215/2032 ,  H05B6/105 ,  H05B6/145 ,  H05B6/365

摘要： A fixing device includes an induction heater disposed opposite a heating rotary body and including a first side core disposed at one end of the induction heater, a second side core disposed at another end of the induction heater in a direction of rotation of the heating rotary body, and a plurality of arch cores arranged in an axial direction of the heating rotary body. Each arch core includes a first vault edge face disposed at one end of the arch core in the direction of rotation of the heating rotary body and contacting a planar face of the first side core and a second vault edge face disposed at another end of the arch core in the direction of rotation of the heating rotary body and contacting a planar face of the second side core.

摘要翻译： 定影装置包括与加热旋转体相对设置的感应加热器，包括设置在感应加热器的一端的第一侧芯，设置在感应加热器的另一端的加热旋转体的旋转方向上的第二侧芯 以及沿着加热旋转体的轴向配置的多个拱形芯。 每个拱形芯包括第一拱形边缘面，其设置在加热旋转体的旋转方向上的拱形芯的一端处，并接触第一侧芯的平面和设置在拱的另一端的第二拱顶边缘面 芯体在加热旋转体的旋转方向上并接触第二侧芯的平面。

公开(公告)号：US09519248B2

公开(公告)日：2016-12-13

申请号：US14148831

申请日：2014-01-07

申请人： Susumu Matsusaka ,  Shota Kobashigawa ,  Motokazu Hasegawa ,  Yukari Isoe

发明人： Susumu Matsusaka ,  Shota Kobashigawa ,  Motokazu Hasegawa ,  Yukari Isoe

IPC分类号： G03G15/20

CPC分类号： G03G15/2053

摘要： A fixing device includes a rotatable fixing member, a pressing member to contact the fixing member with pressure to form a nip between the pressing member and the fixing member, an induction heating unit serving as a heating source to heat the fixing member, and a conductive wire drawn out of the induction heating unit to be disposed outside the cover member through a hole provided substantially at a center of the cover member in a longitudinal direction of the induction heating unit. The induction heating unit includes an excitation coil, a coil holder to hold the excitation coil, and a cover member provided facing the coil holder with the coil holder interposed between the cover member and the fixing member.

摘要翻译： 定影装置包括可旋转的固定构件，用于在压紧构件和固定构件之间形成压合部的接触固定构件的按压构件，用作加热源的感应加热单元，以及导电 从感应加热单元拉出的导线，通过在感应加热单元的纵向方向上设置在盖构件的大致中心处的孔设置在盖构件的外侧。 感应加热单元包括励磁线圈，用于保持励磁线圈的线圈架和面向线圈架设置的盖构件，线圈架设置在盖构件和固定构件之间。

公开(公告)号：US09482998B2

公开(公告)日：2016-11-01

申请号：US14148831

申请日：2014-01-07

申请人： Susumu Matsusaka ,  Shota Kobashigawa ,  Motokazu Hasegawa ,  Yukari Isoe

发明人： Susumu Matsusaka ,  Shota Kobashigawa ,  Motokazu Hasegawa ,  Yukari Isoe

IPC分类号： G03G15/20

摘要： A fixing device includes a rotatable fixing member, a pressing member to contact the fixing member with pressure to form a nip between the pressing member and the fixing member, an induction heating unit serving as a heating source to heat the fixing member, and a conductive wire drawn out of the induction heating unit to be disposed outside the cover member through a hole provided substantially at a center of the cover member in a longitudinal direction of the induction heating unit. The induction heating unit includes an excitation coil, a coil holder to hold the excitation coil, and a cover member provided facing the coil holder with the coil holder interposed between the cover member and the fixing member.

公开(公告)号：US08983348B2

公开(公告)日：2015-03-17

申请号：US14161337

申请日：2014-01-22

申请人： Shota Kobashigawa ,  Susumu Matsusaka ,  Miwa Shuto ,  Masanobu Yamagata ,  Motokazu Hasegawa ,  Yukari Isoe

发明人： Shota Kobashigawa ,  Susumu Matsusaka ,  Miwa Shuto ,  Masanobu Yamagata ,  Motokazu Hasegawa ,  Yukari Isoe

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2032

摘要： A fixing device that includes a rotary fixing member; a pressure roller configured to press against the fixing member to form a nip with the fixing member; and an induction heating unit as a heat source to heat the fixing member. The induction heating unit includes an excitation coil; a coil retainer to hold the excitation coil; and a cover member disposed opposite the coil retainer in an opposite side of the rotary fixing member, in which the cover member protrudes toward a central predetermined range of the excitation coil in an axial direction of the rotary fixing member to effectively cool the fixing device. The induction heating unit further includes a rectifying member to effectively cool the fixing device.

摘要翻译： 一种定影装置，包括旋转固定构件; 压力辊构造成压靠固定构件以与固定构件形成辊隙; 感应加热单元作为加热固定构件的热源。 感应加热单元包括励磁线圈; 用于保持励磁线圈的线圈保持器; 以及在所述旋转固定构件的相反侧与所述线圈保持器相对设置的盖构件，其中所述盖构件沿所述旋转固定构件的轴向朝向所述励磁线圈的中心预定范围突出，以有效地冷却所述定影装置。 感应加热单元还包括整流构件以有效地冷却定影装置。

公开(公告)号：US20140219694A1

公开(公告)日：2014-08-07

申请号：US14156628

申请日：2014-01-16

申请人： Susumu MATSUSAKA ,  Motokazu Hasegawa ,  Yukari Isoe

发明人： Susumu MATSUSAKA ,  Motokazu Hasegawa ,  Yukari Isoe

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2032

摘要： A fixing device includes a rotator having a heat generation layer, an excitation coil to inductively heat the heat generation layer, ferromagnetic cores to direct magnetic flux arising from the excitation coil to the rotator, and a holder to hold the excitation coil and the ferromagnetic cores. In the fixing device, the ferromagnetic cores include multiple cores disposed astride the excitation coil at a turning part on each end of the excitation coil in a longitudinal direction of the excitation coil.

摘要翻译： 定影装置包括：具有发热层的旋转体，感应加热发热层的激励线圈，将由励磁线圈产生的磁通量引导到旋转体的铁磁铁心;以及保持激励线圈和铁磁性核心 。 在固定装置中，铁磁芯包括沿着励磁线圈的纵向方向在励磁线圈的两端的转向部分跨越励磁线圈设置的多个铁芯。

公开(公告)号：US08693934B2

公开(公告)日：2014-04-08

申请号：US13305015

申请日：2011-11-28

申请人： Motokazu Hasegawa ,  Susumu Matsusaka ,  Tsuyoshi Hashiyada

发明人： Motokazu Hasegawa ,  Susumu Matsusaka ,  Tsuyoshi Hashiyada

IPC分类号： G03G15/20

CPC分类号： G03G15/2007 ,  G03G2215/2032 ,  H05B6/105 ,  H05B6/145 ,  H05B6/365

摘要： A fixing device includes an induction heater disposed opposite a heating rotary body and including a first side core disposed at one end of the induction heater, a second side core disposed at another end of the induction heater in a direction of rotation of the heating rotary body, and a plurality of arch cores arranged in an axial direction of the heating rotary body. Each arch core includes a first vault edge face disposed at one end of the arch core in the direction of rotation of the heating rotary body and contacting a planar face of the first side core and a second vault edge face disposed at another end of the arch core in the direction of rotation of the heating rotary body and contacting a planar face of the second side core.

摘要翻译： 定影装置包括与加热旋转体相对设置的感应加热器，包括设置在感应加热器的一端的第一侧芯，设置在感应加热器的另一端的加热旋转体的旋转方向上的第二侧芯 以及沿着加热旋转体的轴向配置的多个拱形芯。 每个拱形芯包括第一拱形边缘面，其设置在加热旋转体的旋转方向上的拱形芯的一端处，并接触第一侧芯的平面和设置在拱的另一端的第二拱顶边缘面 芯体在加热旋转体的旋转方向上并接触第二侧芯的平面。