公开(公告)号：US20130195493A1

公开(公告)日：2013-08-01

申请号：US13754305

申请日：2013-01-30

申请人： Takamasa HASE ,  Kenji Ishii ,  Tadashi Ogawa ,  Teppei Kawata ,  Arinobu Yoshiura ,  Toshihiko Shimokawa ,  Kensuke Yamaji ,  Takeshi Uchitani ,  Shuutaroh Yuasa ,  Masaaki Yoshikawa ,  Hiroshi Yoshinaga ,  Hiromasa Takagi ,  Naoki Iwaya ,  Takahiro Imada ,  Hajime Gotoh ,  Takuya Seshita ,  Ryota Yamashina ,  Yasunori Ishigaya

发明人： Takamasa HASE ,  Kenji Ishii ,  Tadashi Ogawa ,  Teppei Kawata ,  Arinobu Yoshiura ,  Toshihiko Shimokawa ,  Kensuke Yamaji ,  Takeshi Uchitani ,  Shuutaroh Yuasa ,  Masaaki Yoshikawa ,  Hiroshi Yoshinaga ,  Hiromasa Takagi ,  Naoki Iwaya ,  Takahiro Imada ,  Hajime Gotoh ,  Takuya Seshita ,  Ryota Yamashina ,  Yasunori Ishigaya

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/205 ,  G03G15/80 ,  G03G2215/2035

摘要： According to an embodiment, provided is a fixing device that includes: a rotatable fixing member that heats a recording medium on a side carrying an unfixed image; a rotatable pressing member that is pressed and is contacted with the fixing member to form a nip portion between the pressing member and the fixing member; a heat source heating the fixing member; a relay switch provided in an energizing path for the heat source; a temperature detection sensor detecting a temperature of the fixing member; and a control unit that controls energization of the heat source according to the temperature detected by the temperature detection sensor. The control unit keeps the relay switch in an off state if the temperature of the fixing member is equal to or more than a predetermined temperature when the fixing member has stopped rotation.

公开(公告)号：US11500314B2

公开(公告)日：2022-11-15

申请号：US17443462

申请日：2021-07-27

申请人： Keitaro Shoji ,  Yoshio Hattori ,  Yoshikuni Sasaki ,  Takahiro Imada ,  Hiromasa Takagi ,  Yasunori Ishigaya ,  Takumi Waida

发明人： Keitaro Shoji ,  Yoshio Hattori ,  Yoshikuni Sasaki ,  Takahiro Imada ,  Hiromasa Takagi ,  Yasunori Ishigaya ,  Takumi Waida

IPC分类号： G03G15/20

摘要： An image forming apparatus includes an image forming device that forms a toner image on a recording medium, a first rotator, and a second rotator that presses against the first rotator to form a nip therebetween. The first rotator conveys the recording medium bearing the toner image through the nip with a first orientation of the recording medium to fix the toner image on the recording medium to create a cleaning sheet bearing a cleaning image in a cleaning sheet creation mode. The first rotator conveys the cleaning sheet bearing the cleaning image through the nip with a second orientation of the cleaning sheet, that is different from the first orientation of the recording medium, such that the cleaning image is disposed opposite the first rotator to cause the cleaning image to remove a foreign substance from a surface of the first rotator in a cleaning mode.

公开(公告)号：US20160223964A1

公开(公告)日：2016-08-04

申请号：US15010262

申请日：2016-01-29

申请人： Yutaka IKEBUCHI ,  Yasunori Ishigaya ,  Takuya Seshita ,  Kazuya Saito ,  Yamano Motoyoshi ,  Keitaro Shoji

发明人： Yutaka IKEBUCHI ,  Yasunori Ishigaya ,  Takuya Seshita ,  Kazuya Saito ,  Yamano Motoyoshi ,  Keitaro Shoji

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064

摘要： A fixing device includes a nip formation pad to form a fixing nip between a first fixing rotator and a second fixing rotator, through which a recording medium bearing a toner image is conveyed. The nip formation pad includes a first planar face, a second planar face disposed downstream from the first planar face in a recording medium conveyance direction and being parallel to the first planar face, and a joint face bridging the first planar face and the second planar face. The joint face includes a first curved portion adjoining the first planar face and having a first curvature in a first direction in which a circumferential face of the second fixing rotator is curved and a second curved portion adjoining the second planar face and having a second curvature in a second direction opposite the first direction.

摘要翻译： 定影装置包括压区形成垫，以在第一固定旋转器和第二固定旋转器之间形成定影夹持部，通过该固定旋转器传送承载调色剂图像的记录介质。 压区形成垫包括第一平面，第二平面，其在记录介质传送方向上设置在第一平面的下游并且平行于第一平面;以及接合面，桥接第一平面和第二平面 。 接合面包括与第一平面相邻的第一弯曲部分，并且具有第一方向的第一曲率，其中第二定影旋转体的周面弯曲，第二弯曲部分邻接第二平面并且具有第二曲率 与第一方向相反的第二方向。

公开(公告)号：US09804546B2

公开(公告)日：2017-10-31

申请号：US15202859

申请日：2016-07-06

申请人： Kazuya Saito ,  Yasunori Ishigaya ,  Yutaka Ikebuchi ,  Keitaro Shoji ,  Ryohei Matsuda

发明人： Kazuya Saito ,  Yasunori Ishigaya ,  Yutaka Ikebuchi ,  Keitaro Shoji ,  Ryohei Matsuda

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042

摘要： A fixing device includes a primary heat generator and a secondary heat generator to heat an endless belt and a temperature detector, disposed opposite the secondary heat generator, to detect a temperature of the endless belt. The secondary heat generator includes an inboard edge and an outboard edge disposed outboard from the inboard edge in an axial direction of the endless belt. The secondary heat generator has an inboard length defined between a center of a detection span of the temperature detector and the inboard edge in the axial direction of the endless belt. The secondary heat generator further has an outboard length defined between the center of the detection span of the temperature detector and the outboard edge in the axial direction of the endless belt. The secondary heat generator defines a ratio of the outboard length to the inboard length that is greater than 7/3.

公开(公告)号：US10067449B2

公开(公告)日：2018-09-04

申请号：US15194090

申请日：2016-06-27

申请人： Ryohei Matsuda ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

发明人： Ryohei Matsuda ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

IPC分类号： G03G15/20

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

摘要： A fixing device includes a primary heater and a secondary heater that heat a fixing rotator. The primary heater includes a primary major heat generation portion and a primary minor heat generation portion. The primary minor heat generation portion includes a major heat generator that generates an increased amount of heat and a minor heat generator that generates a decreased amount of heat smaller than the increased amount of heat generated by the major heat generator. The major heat generator has a width in an axial direction of the fixing rotator that is not smaller than 30 percent and not greater than 35 percent with respect to a width of the primary minor heat generation portion in the axial direction of the fixing rotator. A temperature detector is disposed opposite the minor heat generator of the primary heater to detect a temperature of the fixing rotator.

公开(公告)号：US09575447B2

公开(公告)日：2017-02-21

申请号：US15010262

申请日：2016-01-29

申请人： Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Takuya Seshita ,  Kazuya Saito ,  Motoyoshi Yamano ,  Keitaro Shoji

发明人： Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Takuya Seshita ,  Kazuya Saito ,  Motoyoshi Yamano ,  Keitaro Shoji

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064

摘要： A fixing device includes a nip formation pad to form a fixing nip between a first fixing rotator and a second fixing rotator, through which a recording medium bearing a toner image is conveyed. The nip formation pad includes a first planar face, a second planar face disposed downstream from the first planar face in a recording medium conveyance direction and being parallel to the first planar face, and a joint face bridging the first planar face and the second planar face. The joint face includes a first curved portion adjoining the first planar face and having a first curvature in a first direction in which a circumferential face of the second fixing rotator is curved and a second curved portion adjoining the second planar face and having a second curvature in a second direction opposite the first direction.

摘要翻译： 定影装置包括压区形成垫，以在第一固定旋转器和第二固定旋转器之间形成定影夹持部，通过该固定旋转器传送承载调色剂图像的记录介质。 压区形成垫包括第一平面，第二平面，其在记录介质传送方向上设置在第一平面的下游并且平行于第一平面;以及接合面，桥接第一平面和第二平面 。 接合面包括与第一平面相邻的第一弯曲部分，并且具有第一方向的第一曲率，其中第二定影旋转体的周面弯曲，第二弯曲部分邻接第二平面并且具有第二曲率 与第一方向相反的第二方向。

公开(公告)号：US20170010571A1

公开(公告)日：2017-01-12

申请号：US15194090

申请日：2016-06-27

申请人： Ryohei MATSUDA ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

发明人： Ryohei MATSUDA ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

IPC分类号： G03G15/20

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

摘要： A fixing device includes a primary heater and a secondary heater that heat a fixing rotator. The primary heater includes a primary major heat generation portion and a primary minor heat generation portion. The primary minor heat generation portion includes a major heat generator that generates an increased amount of heat and a minor heat generator that generates a decreased amount of heat smaller than the increased amount of heat generated by the major heat generator. The major heat generator has a width in an axial direction of the fixing rotator that is not smaller than 30 percent and not greater than 35 percent with respect to a width of the primary minor heat generation portion in the axial direction of the fixing rotator. A temperature detector is disposed opposite the minor heat generator of the primary heater to detect a temperature of the fixing rotator.

摘要翻译： 定影装置包括加热定影旋转器的主加热器和二次加热器。 主加热器包括主要主要发热部分和初级次要发热部分。 主要次要发热部分包括产生增加的热量的主要发热体和产生比主要发热体产生的增加的热量小的热量减少的次要发热体。 主发热体的固定旋转体的轴向宽度相对于初级次发热部在固定旋转体的轴向上的宽度为30％以上且35％以下。 温度检测器设置成与初级加热器的次要发热体相对，以检测定影旋转器的温度。

公开(公告)号：US09164438B2

公开(公告)日：2015-10-20

申请号：US14061962

申请日：2013-10-24

申请人： Masahiro Samei ,  Yasunori Ishigaya ,  Ryota Yamashina ,  Takumi Waida

发明人： Masahiro Samei ,  Yasunori Ishigaya ,  Ryota Yamashina ,  Takumi Waida

IPC分类号： G03G15/20

CPC分类号： G03G15/2042

摘要： A fixing device temperature control method includes selectively energizing at least one of a plurality of heaters that heats a fixing rotary body according to an image area on a recording medium where a toner image is formed on the recording medium, detecting a temperature of a pressing rotary body pressed against the fixing rotary body, and controlling the energized, at least one of the plurality of heaters based on the detected temperature of the pressing rotary body so as to heat the fixing rotary body to a target temperature. The image area on the recording medium corresponds to a plurality of axial heating spans on the fixing rotary body.

摘要翻译： 定影装置温度控制方法包括根据在记录介质上形成调色剂图像的记录介质上的图像区域选择性地加热多个加热器中的至少一个加热器，检测压力旋转体的温度 并且基于检测到的加压旋转体的温度来控制多个加热器中的至少一个加热器的通电，以将定影旋转体加热到目标温度。 记录介质上的图像区域对应于定影旋转体上的多个轴向加热跨度。

公开(公告)号：US20150261151A1

公开(公告)日：2015-09-17

申请号：US14641817

申请日：2015-03-09

申请人： Yasunori Ishigaya ,  Keita Maejima

发明人： Yasunori Ishigaya ,  Keita Maejima

IPC分类号： G03G15/20

CPC分类号： G03G15/205 ,  G03G15/2039 ,  G03G15/2042

摘要： A fixing device includes a pressure rotator pressed against a fixing rotator to form a fixing nip therebetween, through which a recording medium bearing a toner image is conveyed. A first heater is disposed opposite and heats a first heated span on the fixing rotator spanning in an axial direction thereof. A second heater is disposed opposite and heats a second heated span on the fixing rotator spanning in the axial direction thereof. A temperature sensor unit is disposed opposite an outer circumferential surface of the fixing rotator and includes a first temperature detection element to detect a first temperature of the first heated span on the outer circumferential surface of the fixing rotator and a second temperature detection element to detect a second temperature of the second heated span on the outer circumferential surface of the fixing rotator.

摘要翻译： 定影装置包括压靠固定旋转器的压力旋转器，以在其间形成定影辊隙，通过该定影夹持器输送带有调色剂图像的记录介质。 第一加热器相对地设置，并加热沿其轴向跨过的固定旋转器上的第一加热跨度。 第二加热器相对地设置，并且在固定旋转体上沿其轴向方向加热第二加热跨度。 温度传感器单元与固定旋转体的外圆周表面相对设置，并且包括第一温度检测元件，用于检测固定旋转体的外周表面上的第一加热跨度的第一温度;以及第二温度检测元件， 第二加热跨度的第二温度在定影旋转器的外圆周表面上。

公开(公告)号：US08977156B2

公开(公告)日：2015-03-10

申请号：US14173171

申请日：2014-02-05

申请人： Takeshi Yamamoto ,  Kazuhito Kishi ,  Takumi Waida ,  Masahiro Samei ,  Hiroshi Ono ,  Ippei Fujimoto ,  Hiroshi Seo ,  Ryota Yamashina ,  Yasunori Ishigaya

发明人： Takeshi Yamamoto ,  Kazuhito Kishi ,  Takumi Waida ,  Masahiro Samei ,  Hiroshi Ono ,  Ippei Fujimoto ,  Hiroshi Seo ,  Ryota Yamashina ,  Yasunori Ishigaya

IPC分类号： G03G15/20

CPC分类号： G03G15/2042 ,  G03G2215/2035

摘要： A fixing device includes a rotatable, endless fixing belt; a rotatable contact member configured to contact a circumferential surface of the fixing belt to form a nip in association with the fixing belt; and a heating member disposed at an interior surface of the fixing belt, configured to heat the fixing belt. The heating member includes a multiple heat sources arranged along the width of a sheet of recording media in a direction perpendicular to a sheet conveyance direction. A controller changes an area to be heated by each heat source based on image data and corresponding to an unfixed image on the sheet. The fixing belt is heated by the heating member so that the unfixed image on the sheet that has been conveyed to the nip is fixed onto the sheet at least with heat. The heating member is disposed at a portion other than the fixing nip.

摘要翻译： 定影装置包括可旋转的环形定影带; 可旋转接触构件，其构造成接触所述定影带的周向表面以与所述定影带相关联地形成辊隙; 以及设置在所述定影带的内表面处的加热构件，其构造成加热所述定影带。 加热构件包括沿垂直于片材输送方向的方向沿着记录介质片的宽度布置的多个热源。 控制器基于图像数据改变每个热源要加热的区域，并对应于片材上的未定影图像。 定影带被加热部件加热，使得已经输送到辊隙的片材上的未定影图像至少热固定在片材上。 加热构件设置在定影夹持部以外的部分。