公开(公告)号：US10345747B2

公开(公告)日：2019-07-09

申请号：US15970819

申请日：2018-05-03

申请人： Takuya Seshita ,  Kohichi Utsunomiya ,  Hajime Gotoh ,  Takahiro Imada ,  Yutaka Ikebuchi

发明人： Takuya Seshita ,  Kohichi Utsunomiya ,  Hajime Gotoh ,  Takahiro Imada ,  Yutaka Ikebuchi

IPC分类号： G03G15/20 ,  G03G15/16

摘要： A fixing device includes a driving unit, a pressing roller, a heater, a fixing belt, a pressing roller, a nip formation pad that presses against an inner surface of the fixing belt toward the pressing roller via the fixing belt to form a nip, a separation mechanism, a lubricant between the fixing belt and the nip formation pad, and a processor to execute a warming-up operation of the fixing device. In the warming-up operation, before the heater heats the fixing belt, the separation mechanism moves the nip formation pad in a direction of separating the nip formation pad from the pressing roller to set a nip pressure lower than an ordinary nip pressure, and the driving unit rotates the pressing roller that rotates the fixing belt. Thereafter, the heater starts heating, and the separation mechanism moves the nip formation pad to contact the fixing belt at an ordinary nip pressure.

公开(公告)号：US10001735B2

公开(公告)日：2018-06-19

申请号：US15384838

申请日：2016-12-20

申请人： Takahiro Imada ,  Masaaki Yoshikawa ,  Kenji Ishii ,  Hiroshi Yoshinaga ,  Yuji Arai ,  Naoki Iwaya ,  Tetsuo Tokuda ,  Hiromasa Takagi ,  Yoshiki Yamaguchi ,  Ippei Fujimoto ,  Takuya Seshita ,  Yutaka Ikebuchi ,  Arinobu Yoshiura ,  Toshihiko Shimokawa ,  Hajime Gotoh

发明人： Takahiro Imada ,  Masaaki Yoshikawa ,  Kenji Ishii ,  Hiroshi Yoshinaga ,  Yuji Arai ,  Naoki Iwaya ,  Tetsuo Tokuda ,  Hiromasa Takagi ,  Yoshiki Yamaguchi ,  Ippei Fujimoto ,  Takuya Seshita ,  Yutaka Ikebuchi ,  Arinobu Yoshiura ,  Toshihiko Shimokawa ,  Hajime Gotoh

IPC分类号： G03G15/20

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

摘要： A fixing device may include an endless fixing member; a heater inside the fixing member; and a nip forming unit configured to form a nip through which a recording sheet is conveyed, the nip forming unit including a supporting member and a contact member supported by the supporting member, the supporting member including at least one contact surface and the contact member including a plurality of protrusions protruding towards the supporting member such that two or more of the plurality of protrusions are configured to contact one of the at least one contact surface of the supporting member, each of the plurality of protrusions having a height associated there with such that the height of the plurality of protrusions increases in a direction from ends of the contact member towards a center of the contact member.

公开(公告)号：US09690243B2

公开(公告)日：2017-06-27

申请号：US14928757

申请日：2015-10-30

申请人： Takamasa Hase ,  Masahiko Satoh ,  Shinichi Namekata ,  Kenji Ishii ,  Takeshi Uchitani ,  Tadashi Ogawa ,  Teppei Kawata ,  Arinobu Yoshiura ,  Kazuya Saito ,  Toshihiko Shimokawa ,  Shuutaroh Yuasa ,  Kensuke Yamaji ,  Masaaki Yoshikawa ,  Hiroshi Yoshinaga ,  Hiromasa Takagi ,  Naoki Iwaya ,  Takuya Seshita ,  Takahiro Imada ,  Hajime Gotoh ,  Akira Suzuki

发明人： Takamasa Hase ,  Masahiko Satoh ,  Shinichi Namekata ,  Kenji Ishii ,  Takeshi Uchitani ,  Tadashi Ogawa ,  Teppei Kawata ,  Arinobu Yoshiura ,  Kazuya Saito ,  Toshihiko Shimokawa ,  Shuutaroh Yuasa ,  Kensuke Yamaji ,  Masaaki Yoshikawa ,  Hiroshi Yoshinaga ,  Hiromasa Takagi ,  Naoki Iwaya ,  Takuya Seshita ,  Takahiro Imada ,  Hajime Gotoh ,  Akira Suzuki

IPC分类号： G03G15/20 ,  G03G15/00

CPC分类号： G03G15/2028 ,  G03G15/2039 ,  G03G15/205 ,  G03G15/55

摘要： An image forming apparatus includes a fixing device. The fixing device includes a rotatable endless fixing member, a nip forming member arranged inside the fixing member, a pressing member in contact with the nip forming member via the fixing member, and a heating source configured to heat the fixing member. When an abnormality occurs in at least one of the fixing device and other devices included in the image forming apparatus, a rotation of the fixing member is stopped prior to stopping a rotation driving of a discharging unit and, after stopping, the fixing member is controlled to rotate.

公开(公告)号：US09557692B2

公开(公告)日：2017-01-31

申请号：US14851583

申请日：2015-09-11

申请人： Takahiro Imada ,  Masaaki Yoshikawa ,  Kenji Ishii ,  Hiroshi Yoshinaga ,  Yuji Arai ,  Naoki Iwaya ,  Tetsuo Tokuda ,  Hiromasa Takagi ,  Yoshiki Yamaguchi ,  Ippei Fujimoto ,  Takuya Seshita ,  Yutaka Ikebuchi ,  Arinobu Yoshiura ,  Toshihiko Shimokawa ,  Hajime Gotoh

发明人： Takahiro Imada ,  Masaaki Yoshikawa ,  Kenji Ishii ,  Hiroshi Yoshinaga ,  Yuji Arai ,  Naoki Iwaya ,  Tetsuo Tokuda ,  Hiromasa Takagi ,  Yoshiki Yamaguchi ,  Ippei Fujimoto ,  Takuya Seshita ,  Yutaka Ikebuchi ,  Arinobu Yoshiura ,  Toshihiko Shimokawa ,  Hajime Gotoh

IPC分类号： G03G15/20

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

摘要： A fixing device may include an endless fixing member; a heating unit that is provided inside an inner peripheral surface of the fixing member; and a nip forming unit that comes into press-contact with a rotationally driven pressing member with the fixing member interposed therebetween to form a nip. The nip forming unit has a shape in which a center of a contact surface protrudes toward the pressing member compared to both ends. The nip forming unit has a protruding amount at a center toward the pressing member compared to both ends of the nip forming unit in no-load state is set to be less than a bent amount of the nip forming unit when the nip forming unit comes into press-contact with the pressing member with the fixing member interposed therebetween.

摘要翻译： 定影装置可以包括环形固定构件; 加热单元，设置在所述固定构件的内周面的内侧; 以及辊隙形成单元，其与固定构件夹在其间的与旋转驱动的按压构件压力接触以形成辊隙。 辊隙形成单元具有与两端相比接触表面的中心朝向按压构件突出的形状。 压区形成单元在空载状态下与夹紧形成单元的两端相比，在朝向加压构件的中心处具有突出量设定为小于压区形成单元的弯曲量时 与固定构件夹在其间的按压构件压接。

公开(公告)号：US09494896B2

公开(公告)日：2016-11-15

申请号：US14186078

申请日：2014-02-21

申请人： Kensuke Yamaji ,  Takuya Seshita ,  Takahiro Imada ,  Hajime Gotoh ,  Akira Suzuki

发明人： Kensuke Yamaji ,  Takuya Seshita ,  Takahiro Imada ,  Hajime Gotoh ,  Akira Suzuki

IPC分类号： G03G15/20

CPC分类号： G03G15/2028

摘要： A fixing device includes a fixing rotary body rotatable in a given direction of rotation and a heater disposed opposite the fixing rotary body to heat the fixing rotary body. A pressing rotary body contacts the fixing rotary body to form a fixing nip therebetween through which a recording medium is conveyed. A separator is disposed downstream from the fixing nip in a recording medium conveyance direction to separate the recording medium from one of the fixing rotary body and the pressing rotary body. The separator includes a separation plate including an upstream portion disposed opposite the fixing nip and at least one slot disposed downstream from the upstream portion in the recording medium conveyance direction.

摘要翻译： 定影装置包括可沿给定旋转方向旋转的定影旋转体和与定影旋转体相对设置的加热器，以加热定影旋转体。 按压旋转体与固定旋转体接触，以形成传送记录介质的定影辊隙。 在记录介质输送方向上，在定影辊隙的下游配置隔板，以将记录介质与定影用旋转体和加压旋转体之一分离。 分离器包括分离板，该分离板包括与定影辊隙相对设置的上游部分和设置在记录介质传送方向上游的上游部分的下游的至少一个狭槽。

公开(公告)号：US20160274515A1

公开(公告)日：2016-09-22

申请号：US15069492

申请日：2016-03-14

申请人： Takahiro Imada ,  Yuji Arai ,  Takuya Seshita ,  Motoyoshi Yamano ,  Hajime Gotoh ,  Akira Suzuki

发明人： Takahiro Imada ,  Yuji Arai ,  Takuya Seshita ,  Motoyoshi Yamano ,  Hajime Gotoh ,  Akira Suzuki

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes an endless belt rotatable in a predetermined direction of rotation and a nip formation pad disposed opposite an inner circumferential surface of the endless belt. A slide sheet is sandwiched between the nip formation pad and the endless belt and is a twill fabric containing a lubricant. The slide sheet includes a first sheet contacting the nip formation pad and including a first gutter defined by a first twill line in a first direction angled relative to the direction of rotation of the endless belt and a second sheet layered on the first sheet and contacting the endless belt. The second sheet includes a second gutter defined by a second twill line in a second direction angled relative to the direction of rotation of the endless belt.

摘要翻译： 定影装置包括沿预定旋转方向旋转的环形带和与环形带的内周表面相对设置的辊隙形成垫。 滑动片被夹在辊隙形成垫和环形带之间，并且是含有润滑剂的斜纹织物。 滑动片包括接触压区形成垫的第一片，并且包括由相对于环形带的旋转方向成角度的第一方向的第一斜纹线限定的第一格栅和分层在第一片上的第二片， 无尽腰带 第二片包括第二斜纹线，该第二斜纹线在相对于环形带的旋转方向成角度的第二方向上由第二斜纹线限定。

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：US09405250B2

公开(公告)日：2016-08-02

申请号：US14631479

申请日：2015-02-25

申请人： Tadashi Ogawa ,  Masahiko Satoh ,  Masaaki Yoshikawa ,  Hiroshi Yoshinaga ,  Kenji Ishii ,  Takeshi Uchitani ,  Hiromasa Takagi ,  Naoki Iwaya ,  Takuya Seshita ,  Takahiro Imada ,  Hajime Gotoh ,  Takamasa Hase ,  Toshihiko Shimokawa ,  Shuutaroh Yuasa ,  Teppei Kawata ,  Arinobu Yoshiura ,  Kensuke Yamaji ,  Akira Suzuki

发明人： Tadashi Ogawa ,  Masahiko Satoh ,  Masaaki Yoshikawa ,  Hiroshi Yoshinaga ,  Kenji Ishii ,  Takeshi Uchitani ,  Hiromasa Takagi ,  Naoki Iwaya ,  Takuya Seshita ,  Takahiro Imada ,  Hajime Gotoh ,  Takamasa Hase ,  Toshihiko Shimokawa ,  Shuutaroh Yuasa ,  Teppei Kawata ,  Arinobu Yoshiura ,  Kensuke Yamaji ,  Akira Suzuki

IPC分类号： G03G15/20

CPC分类号： G03G15/2085 ,  G03G15/2017 ,  G03G15/2028 ,  G03G15/205 ,  G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes at least one heater disposed opposite an inner circumferential surface of an endless rotary body to heat the endless rotary body and a shield interposed between the endless rotary body and the at least one heater to shield the endless rotary body from heat radiated from the at least one heater. A first size recording medium passes over a first passage region of the endless rotary body and a second size recording medium passes over a second passage region of the endless rotary body. The shield includes a notch disposed opposite a lateral end of the second passage region of the endless rotary body in an axial direction thereof. The lateral end of the second passage region overlaps a non-passage region of the endless rotary body in the axial direction thereof where the first size recording medium does not pass.

公开(公告)号：US09291967B2

公开(公告)日：2016-03-22

申请号：US14536173

申请日：2014-11-07

申请人： Naoki Iwaya ,  Masahiko Satoh ,  Masaaki Yoshikawa ,  Kenji Ishii ,  Hiroshi Yoshinaga ,  Tadashi Ogawa ,  Takeshi Uchitani ,  Hiromasa Takagi ,  Takuya Seshita ,  Takahiro Imada ,  Takamasa Hase ,  Hajime Gotoh ,  Arinobu Yoshiura ,  Teppei Kawata ,  Toshihiko Shimokawa ,  Shuutaroh Yuasa ,  Kazuya Saito ,  Kensuke Yamaji ,  Akira Suzuki

发明人： Naoki Iwaya ,  Masahiko Satoh ,  Masaaki Yoshikawa ,  Kenji Ishii ,  Hiroshi Yoshinaga ,  Tadashi Ogawa ,  Takeshi Uchitani ,  Hiromasa Takagi ,  Takuya Seshita ,  Takahiro Imada ,  Takamasa Hase ,  Hajime Gotoh ,  Arinobu Yoshiura ,  Teppei Kawata ,  Toshihiko Shimokawa ,  Shuutaroh Yuasa ,  Kazuya Saito ,  Kensuke Yamaji ,  Akira Suzuki

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2017 ,  G03G2215/2035

摘要： A fixing device that fixes an image on a recording medium includes a rotatable endless belt, deployed in a loop supported by rollers, a nip forming member provided inside the loop formed by the belt, a support member that supports the nip forming member, a counter rotation body disposed outside the loop formed by the belt and configured to form a nip with the belt by being in contact with the nip forming member through the belt, and a heat source configured to heat the belt directly by a radiant heat except at the nip. The support member includes a base portion that contacts the nip forming member and two arms extending from the base portion in a direction away from the nip forming member to partially surround a part of heat generating portion of the heat source.

公开(公告)号：US09285724B2

公开(公告)日：2016-03-15

申请号：US14584728

申请日：2014-12-29

申请人： Takamasa Hase ,  Hiroshi Yoshinaga ,  Takeshi Uchitani ,  Yutaka Ikebuchi ,  Takuya Seshita ,  Shuutaroh Yuasa

发明人： Takamasa Hase ,  Hiroshi Yoshinaga ,  Takeshi Uchitani ,  Yutaka Ikebuchi ,  Takuya Seshita ,  Shuutaroh Yuasa

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2017 ,  G03G2215/2035

摘要： A fixing device includes a rotary endless fixing belt; a nip forming member disposed in an interior of the fixing belt; a rotary opposed member to contact the nip forming member via the fixing belt to form a nip together with the fixing belt; a heat source to directly heat the fixing belt at a portion other than the nip, including at lease one heat-generation part disposed outside lateral ends of a maximum area of the fixing belt where a recording medium passes through, wherein a recording medium carrying an unfixed image is conveyed to the nip and the fixing device fixes the unfixed image onto the recording medium; and a shielding member disposed between the fixing belt and the heat generation part of the heat source and configured to shield heat from the heat source at least at an area outside the maximum passing area of the recording medium.