公开(公告)号：US20210223724A1

公开(公告)日：2021-07-22

申请号：US17147894

申请日：2021-01-13

申请人： Takahiro IMADA ,  Yoshio HATTORI ,  Yoshikuni SASAKI ,  Hiromasa TAKAGI ,  Yasunori ISHIGAYA ,  Takumi WAIDA

发明人： Takahiro IMADA ,  Yoshio HATTORI ,  Yoshikuni SASAKI ,  Hiromasa TAKAGI ,  Yasunori ISHIGAYA ,  Takumi WAIDA

IPC分类号： G03G15/20 ,  G03G21/16

摘要： A fixing device is configured to be detachably attached to an image forming device main body. The fixing device includes a fixing member, a heating source, a pressing member, a conveyance guide member, an exterior member, a relay substrate, and a substrate covering member. The fixing member is configured to heat a toner image so as to fix the toner image on a recording medium. The heating source is configured to heat the fixing member. The pressing member is configured to press against the fixing member to form a nip part. The conveyance guide member is configured to guide the recording medium to the nip part. The exterior member houses at least the fixing member and the pressing member. The substrate covering member covers the relay substrate. The substrate covering member extends from and is integrated with the conveyance guide member.

公开(公告)号：US20230008258A1

公开(公告)日：2023-01-12

申请号：US17852381

申请日：2022-06-29

申请人： Hiromasa TAKAGI ,  Seiji SAITOH ,  Jun OKAMOTO ,  Tamotsu IKEDA ,  Yoshikuni SASAKI ,  Takahiro IMADA

发明人： Hiromasa TAKAGI ,  Seiji SAITOH ,  Jun OKAMOTO ,  Tamotsu IKEDA ,  Yoshikuni SASAKI ,  Takahiro IMADA

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

摘要： An image forming apparatus includes two rotators, a driver driving the rotators, a heating device to heat the rotator, a blower blowing air to the heating device, a temperature detector, a recording medium detector, a cover, an open-close detector, and circuitry. The circuitry detects an abnormal state and stops heat generation, determines whether the cover is closed using the open-close detector, controls the blower to blow air when the cover is closed, determines whether the recording medium is in the nip using the recording medium detector, controls the driver to rotate the two rotators when the cover is closed and no recording medium is in the nip, determines whether a temperature detected is equal to or lower than a threshold value before the cover is opened, and controls the blower to decrease an air volume when the temperature detected is equal to or lower than the threshold value.

公开(公告)号：US20230004107A1

公开(公告)日：2023-01-05

申请号：US17825471

申请日：2022-05-26

申请人： Seiji SAITOH ,  Takahiro IMADA ,  Yoshikuni SASAKI ,  Tamotsu IKEDA ,  Hiromasa TAKAGI ,  Jun OKAMOTO

发明人： Seiji SAITOH ,  Takahiro IMADA ,  Yoshikuni SASAKI ,  Tamotsu IKEDA ,  Hiromasa TAKAGI ,  Jun OKAMOTO

IPC分类号： G03G15/20

摘要： A contact-separation device brings a contact-separation member into contact with a contacted member separably and includes a biasing member that generates a biasing force. A presser presses the contact-separation member against the contacted member in a pressing direction with the biasing force from the biasing member. A cam presses the presser in an opposite direction being opposite to the pressing direction. The cam is rotatable and has a cam face. A cam follower has a cam contact face that contacts the cam face of the cam. The cam contact face is curved to project toward the cam. The cam contact face has a curvature that is smaller than a greatest curvature of the cam face of the cam and is greater than a smallest curvature of the cam face of the cam.

公开(公告)号：US20160223961A1

公开(公告)日：2016-08-04

申请号：US14992643

申请日：2016-01-11

申请人： Hiromasa TAKAGI ,  Kenji ISHll ,  Kazuhito KISHI ,  Takashi SETO ,  Takayuki SEKI ,  Hiroshi YOSHINAGA ,  lppei FUJIMOTO ,  Kazunari SAWADA

发明人： Hiromasa TAKAGI ,  Kenji ISHll ,  Kazuhito KISHI ,  Takashi SETO ,  Takayuki SEKI ,  Hiroshi YOSHINAGA ,  lppei FUJIMOTO ,  Kazunari SAWADA

IPC分类号： G03G15/20

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

摘要： A fixing device includes a flexible, tubular fixing rotator rotatable in a predetermined direction of rotation and an opposed rotator disposed opposite the fixing rotator. A nip formation pad presses against the opposed rotator via the fixing rotator to form a fixing nip between the fixing rotator and the opposed rotator, through which a recording medium bearing a toner image is conveyed. A fixing heater is disposed opposite at least a conveyance span of the fixing rotator in an axial direction thereof where the recording medium is conveyed to heat the fixing rotator. A lateral end heater is mounted on the nip formation pad and disposed opposite an inner circumferential surface of the fixing rotator at a lateral end of the fixing rotator in the axial direction thereof to heat the fixing rotator. A supplementary thermal conductor contacts the fixing rotator and the lateral end heater.

摘要翻译： 定影装置包括可沿预定旋转方向旋转的柔性管状固定旋转体和与定影旋转体相对设置的相对旋转体。 压区形成垫通过固定旋转器压靠在相对的旋转体上，以在固定旋转体和相对旋转体之间形成定影辊隙，通过该固定旋转体传送带有调色剂图像的记录介质。 定影加热器相对于固定旋转器的输送跨度至少沿其轴向传送记录介质的传送跨度相对地设置以加热定影旋转体。 横向端加热器安装在辊隙形成垫上并且在固定旋转器的轴向方向的侧端处与固定旋转体的内圆周表面相对地设置，以加热定影旋转体。 辅助热导体接触固定旋转器和侧端加热器。

公开(公告)号：US20150110531A1

公开(公告)日：2015-04-23

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。

公开(公告)号：US20150055994A1

公开(公告)日：2015-02-26

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。

公开(公告)号：US20150125193A1

公开(公告)日：2015-05-07

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。

公开(公告)号：US20160187823A1

公开(公告)日：2016-06-30

申请号：US14979686

申请日：2015-12-28

申请人： Takashi SETO ,  Kenji ISHll ,  Kazuhito KISHI ,  lppei FUJIMOTO ,  Takayuki SEKI ,  Susumu MATSUSAKA ,  Yasuhiko OGINO ,  Shohta KOBASHIGAWA ,  Hiromasa TAKAGI

发明人： Takashi SETO ,  Kenji ISHll ,  Kazuhito KISHI ,  lppei FUJIMOTO ,  Takayuki SEKI ,  Susumu MATSUSAKA ,  Yasuhiko OGINO ,  Shohta KOBASHIGAWA ,  Hiromasa TAKAGI

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G2215/0132 ,  G03G2215/2035

摘要： A nip formation assembly disposed opposite an opposed rotator via an endless belt includes a nip formation pad to press against the opposed rotator via the endless belt to form a fixing nip between the endless belt and the opposed rotator, through which a recording medium bearing a toner image is conveyed. A fixing heater is disposed opposite at least a center span of the endless belt in an axial direction thereof where the recording medium is conveyed. The fixing heater heats the endless belt. A lateral end heater is mounted on the nip formation pad and disposed opposite a lateral end span of an inner circumferential surface of the endless belt in the axial direction thereof. The lateral end heater heats the endless belt.

摘要翻译： 经由环形带与相对旋转体相对设置的压区形成组件包括压区形成垫，其通过环形带压靠在相对的旋转体上，以在环形带和相对旋转体之间形成定影辊隙，通过该固定辊隙，承载调色剂的记录介质 图像传达。 固定加热器相对于环形带的至少中心跨度在其记录介质被输送的轴向方向上相对设置。 定影加热器加热环形带。 侧端加热器安装在辊隙形成垫上，并且与环形带的内周表面的轴向方向的侧端跨度相对设置。 侧端加热器加热环形带。

公开(公告)号：US20240295842A1

公开(公告)日：2024-09-05

申请号：US18443333

申请日：2024-02-16

申请人： Hitoshi FUJIWARA ,  Yutaka IKEBUCHI ,  Shigeo NANNO ,  Hiromasa TAKAGI ,  Yuusuke FURUICHI

发明人： Hitoshi FUJIWARA ,  Yutaka IKEBUCHI ,  Shigeo NANNO ,  Hiromasa TAKAGI ,  Yuusuke FURUICHI

IPC分类号： G03G15/20

CPC分类号： G03G15/2017 ,  G03G15/2057 ,  G03G15/206 ,  G03G15/2064

摘要： A frame device includes a body frame and a rotator that rotates in a rotation direction. A first support frame supports one lateral end of the rotator in a longitudinal direction of the rotator. The first support frame includes a first attachment portion that is attached to the body frame. A second support frame supports another lateral end of the rotator in the longitudinal direction of the rotator. The second support frame includes a second attachment portion that is attached to the body frame.

公开(公告)号：US20240248426A1

公开(公告)日：2024-07-25

申请号：US18414486

申请日：2024-01-17

申请人： Hiromasa TAKAGI ,  Hitoshi FUJIWARA ,  Shigeo NANNO ,  Yutaka IKEBUCHI ,  Yuusuke FURUICHI

发明人： Hiromasa TAKAGI ,  Hitoshi FUJIWARA ,  Shigeo NANNO ,  Yutaka IKEBUCHI ,  Yuusuke FURUICHI

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064 ,  G03G2215/2025 ,  G03G2215/2048

摘要： A fixing device includes a belt that rotates in a rotation direction and a heater that heats the belt. A conductive member contacts an inner face of the belt and pivots. The conductive member includes one end portion in the rotation direction of the belt, a contact portion that contacts the belt, and an outboard portion that is disposed outboard from the contact portion in the rotation direction of the belt. A holding portion holds the one end portion of the conductive member. A pivot restrictor contacts the outboard portion of the conductive member. The pivot restrictor restricts pivoting of the conductive member about the one end portion of the conductive member.