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    Fixing device and image forming apparatus
    1.
    发明授权
    Fixing device and image forming apparatus 有权
    固定装置和成像装置

    公开(公告)号：US09581948B2

    公开(公告)日：2017-02-28

    申请号：US14504626

    申请日：2014-10-02

    申请人： Hiromasa Takagi ,  Kenji Ishii ,  Takayuki Seki ,  Keitaro Shoji

    发明人： Hiromasa Takagi ,  Kenji Ishii ,  Takayuki Seki ,  Keitaro Shoji

    IPC分类号： G03G15/20

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

    摘要： A fixing device includes a fixing rotator and a pressure rotator pressed against a nip formation pad via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator, through which a recording medium is conveyed. The nip formation pad includes an increased thermal conduction portion having an increased thermal conductivity and a decreased thermal conduction portion having a decreased thermal conductivity and being inboard from the increased thermal conduction portion in the axial direction of the fixing rotator. The increased thermal conduction portion is disposed opposite a non-conveyance span of the fixing rotator where the recording medium is not conveyed and includes an inboard edge inboard from a lateral edge of the recording medium toward a center of the recording medium in the axial direction of the fixing rotator by a predetermined first distance.

    摘要翻译： 定影装置包括固定旋转器和经由固定旋转器压靠在压区形成垫上的压力旋转器，以在定影旋转器和压力旋转器之间形成定影夹持部，通过该定影辊隙传送记录介质。 压区形成垫包括具有增加的导热性的增加的热传导部分和具有降低的导热性的降低的热传导部分，并且在固定旋转体的轴向方向上从增加的热传导部分内侧。 增加的热传导部分与固定旋转器的非传送跨度相对，其中记录介质不被传送，并且包括从记录介质的侧边缘朝向记录介质的轴向方向的中心的内侧边缘 固定旋转器预定的第一距离。

    Fixing device and image forming apparatus
    2.
    发明授权
    Fixing device and image forming apparatus 有权
    固定装置和成像装置

    公开(公告)号：US09291966B2

    公开(公告)日：2016-03-22

    申请号：US14467341

    申请日：2014-08-25

    申请人： Keitaro Shoji ,  Kenji Ishii ,  Hiromasa Takagi ,  Takayuki Seki

    发明人： Keitaro Shoji ,  Kenji Ishii ,  Hiromasa Takagi ,  Takayuki Seki

    IPC分类号： G03G15/20

    CPC分类号： G03G15/2053 ,  G03G2215/2035

    摘要： A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and an opposed rotator disposed opposite the fixing rotator to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A heater is disposed opposite the fixing rotator to heat the fixing rotator. A nip formation pad is disposed opposite an inner circumferential surface of the fixing rotator. The nip formation pad includes a base, a first thermal conductor sandwiched between the base and the fixing rotator and having a first thermal conductivity greater than a thermal conductivity of the base, and a bulge projecting from the first thermal conductor toward the opposed rotator at a downstream end of the first thermal conductor in a recording medium conveyance direction.

    摘要翻译： 定影装置包括可沿预定旋转方向旋转的定影旋转器和与定影旋转体相对设置的相对旋转体，以在其间传送承载有调色剂图像的记录介质的定影辊隙。 加热器与定影旋转器相对设置，以加热定影旋转器。 压区形成垫与定影旋转体的内周面相对设置。 压区形成垫包括基座，夹在基座和固定旋转体之间的第一热导体，其第一导热率大于基座的导热率，以及从第一导热体向相对旋转体突出的凸起， 第一热导体的下游端在记录介质输送方向上。

    Fixing device and image forming apparatus
    3.
    发明授权
    Fixing device and image forming apparatus 有权

    公开(公告)号：US09618888B2

    公开(公告)日：2017-04-11

    申请号：US15040691

    申请日：2016-02-10

    申请人： Keitaro Shoji ,  Kenji Ishii ,  Hiromasa Takagi ,  Takayuki Seki

    发明人： Keitaro Shoji ,  Kenji Ishii ,  Hiromasa Takagi ,  Takayuki Seki

    IPC分类号： G03G15/20

    CPC分类号： G03G15/2053 ,  G03G2215/2035

    摘要： A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and an opposed rotator disposed opposite the fixing rotator to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A heater is disposed opposite the fixing rotator to heat the fixing rotator. A nip formation pad is disposed opposite an inner circumferential surface of the fixing rotator. The nip formation pad includes a base, a first thermal conductor sandwiched between the base and the fixing rotator and having a first thermal conductivity greater than a thermal conductivity of the base, and a bulge projecting from the first thermal conductor toward the opposed rotator at a downstream end of the first thermal conductor in a recording medium conveyance direction.

    Fixing device and image forming apparatus including a multi-layer nip formation pad
    4.
    发明授权
    Fixing device and image forming apparatus including a multi-layer nip formation pad 有权
    定影装置和包括多层压区形成垫的图像形成装置

    公开(公告)号：US09529309B2

    公开(公告)日：2016-12-27

    申请号：US14531313

    申请日：2014-11-03

    申请人： Kenji Ishii ,  Hiromasa Takagi ,  Takayuki Seki ,  Keitaro Shoji

    发明人： Kenji Ishii ,  Hiromasa Takagi ,  Takayuki Seki ,  Keitaro Shoji

    IPC分类号： G03G15/20

    CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G2215/2025 ,  G03G2215/2029 ,  G03G2215/2032 ,  G03G2215/2035 ,  G03G2215/2038

    摘要： A fixing device includes a fixing rotator, a nip formation pad disposed opposite an inner circumferential surface of the fixing rotator, and a pressure rotator pressed against the nip formation pad via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator, through which a recording medium is conveyed. A support is disposed opposite the pressure rotator via the nip formation pad to support the nip formation pad against pressure from the pressure rotator. The nip formation pad conducts heat in a thickness direction thereof perpendicular to an axial direction of the fixing rotator and a recording medium conveyance direction. The nip formation pad includes a multi-conductivity layer having a thermal conductivity varying in the axial direction of the fixing rotator and a support side layer contacting the support and having a thermal conductivity greater than a thermal conductivity of the support.

    摘要翻译： 定影装置包括固定旋转体，与定影旋转体的内周面相对配置的压区形成垫，以及经由固定旋转体压靠在压区形成垫上的压力旋转体，在固定旋转体和压力旋转体之间形成定影辊隙 传送记录媒体。 支撑件通过压区形成垫与压力旋转体相对设置，以支撑压区形成垫抵抗来自压力旋转器的压力。 压区形成垫沿与固定旋转体的轴向垂直的厚度方向和记录介质输送方向传导热量。 压区形成垫包括具有在固定旋转体的轴向上变化的热导率的多导电层和与支撑体接触并具有大于载体的热导率的导热性的支撑侧层。

    Fixing device and image forming apparatus
    6.
    发明授权
    Fixing device and image forming apparatus 有权
    固定装置和成像装置

    公开(公告)号：US09298146B2

    公开(公告)日：2016-03-29

    申请号：US14644903

    申请日：2015-03-11

    申请人： Arinobu Yoshiura ,  Hideo Nagafuji ,  Yuji Arai ,  Kohichi Utsunomiya ,  Shohei Saito ,  Qifeng Cui ,  Yutaka Ikebuchi ,  Motoyoshi Yamano ,  Kenji Ishii ,  Hiromasa Takagi ,  Keitaro Shoji

    发明人： Arinobu Yoshiura ,  Hideo Nagafuji ,  Yuji Arai ,  Kohichi Utsunomiya ,  Shohei Saito ,  Qifeng Cui ,  Yutaka Ikebuchi ,  Motoyoshi Yamano ,  Kenji Ishii ,  Hiromasa Takagi ,  Keitaro Shoji

    IPC分类号： G03G15/20

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

    摘要： A fixing device includes: a rotatable fixing member formed as an endless belt; a heat source to heat the fixing member; a nip-forming member being not rotatable and arranged inside the fixing member; and a pressure member arranged outside the fixing member and forming a nip between the pressure member and the fixing member. The nip-forming member is formed of a first heat transmission unit and a sliding sheet. The first heat transmission unit includes an abutting part abutting the fixing member with the sliding sheet therebetween, and a bent part or bent parts extending inside the fixing member at upstream or upstream and downstream of the nip in a transport direction of a recording medium. A retaining part to catch and retain the sliding sheet is provided at a tip of at least the bent part at upstream of the nip in the transport direction.

    摘要翻译： 定影装置包括：形成为环形带的可旋转固定构件; 用于加热固定构件的热源; 夹持部件不能旋转并且布置在固定部件的内部; 以及压力构件，其布置在所述固定构件的外部并且在所述压力构件和所述固定构件之间形成辊隙。 夹持部件由第一传热单元和滑动片形成。 所述第一传热单元包括邻接所述固定部件与所述滑动片之间的抵接部，以及在所述辊隙的上游或下游以及所述夹持部的沿所述记录介质的输送方向延伸的所述固定部件内的弯曲部或弯曲部。 在运送方向的夹持部的上游，至少设有弯曲部的前端，设置有夹持并保持滑动片的保持部。