公开(公告)号：US10191423B2

公开(公告)日：2019-01-29

申请号：US15708734

申请日：2017-09-19

申请人： Ryohhei Sugiyama ,  Hironori Yamaoka ,  Takashi Sakamaki ,  Tetsuo Tokuda ,  Akiyasu Amita ,  Shinichi Namekata ,  Yohhei Watanabe ,  Fumihiro Hirose ,  Teppei Kawata ,  Masateru Ujiie

发明人： Ryohhei Sugiyama ,  Hironori Yamaoka ,  Takashi Sakamaki ,  Tetsuo Tokuda ,  Akiyasu Amita ,  Shinichi Namekata ,  Yohhei Watanabe ,  Fumihiro Hirose ,  Teppei Kawata ,  Masateru Ujiie

IPC分类号： G03G15/20

摘要： An image forming apparatus includes a fixing belt stretched across a first roller and a second roller including an elastic layer. A pressure rotator presses against the second roller via the fixing belt to form a fixing nip between the pressure rotator and the fixing belt. A recording medium bearing a toner image is conveyed through the fixing nip. A clearance detector detects a clearance between the first roller and the second roller. A mover moves the pressure rotator with respect to the second roller in a pressing direction in which the pressure rotator presses against the second roller via the fixing belt and a separation direction in which the pressure rotator separates from the second roller. A controller controls an amount of movement of the pressure rotator moved by the mover toward the second roller based on the clearance detected by the clearance detector.

公开(公告)号：US20200249603A1

公开(公告)日：2020-08-06

申请号：US16726941

申请日：2019-12-26

申请人： Yasunori ISHIGAYA ,  Yoshio HATTORI ,  Yoshikuni SASAKI ,  Hironori YAMAOKA ,  Takahiro IMADA ,  Takumi WAIDA

发明人： Yasunori ISHIGAYA ,  Yoshio HATTORI ,  Yoshikuni SASAKI ,  Hironori YAMAOKA ,  Takahiro IMADA ,  Takumi WAIDA

IPC分类号： G03G15/20

摘要： A fixing device includes a first rotator and a second rotator disposed opposite the first rotator. A heater heats one of the first rotator and the second rotator. A cleaner is disposed opposite the second rotator. A temperature detector is disposed opposite the second rotator at an opposed position being within an increased conveyance span where a first sheet is conveyed and being outboard from a decreased conveyance span in an axial direction of the second rotator where a second sheet smaller than the first sheet is conveyed. The temperature detector detects a temperature of the second rotator. A mover moves the cleaner between a contact position where the cleaner contacts the surface of the second rotator and a separation position where the cleaner separates from the surface of the second rotator based on the temperature of the second rotator, that is detected by the temperature detector.

公开(公告)号：US09715201B2

公开(公告)日：2017-07-25

申请号：US15182034

申请日：2016-06-14

申请人： Takamasa Hase ,  Takashi Fujita ,  Seiji Saitoh ,  Kenji Ishii ,  Akiyasu Amita ,  Kenichi Hasegawa ,  Takashi Seto ,  Tetsuo Tokuda ,  Hiroshi Seo ,  Hironori Yamaoka

发明人： Takamasa Hase ,  Takashi Fujita ,  Seiji Saitoh ,  Kenji Ishii ,  Akiyasu Amita ,  Kenichi Hasegawa ,  Takashi Seto ,  Tetsuo Tokuda ,  Hiroshi Seo ,  Hironori Yamaoka

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064 ,  G03G2215/0636 ,  G03G2215/20 ,  G03G2215/2032 ,  G03G2215/2035

摘要： A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and a pressure rotator to press against the fixing rotator to form a fixing nip therebetween, through which a recording medium bearing a toner image is conveyed. A rotation load applicator is coupled to one of the fixing rotator and the pressure rotator to apply a rotation load to the one of the fixing rotator and the pressure rotator. The rotation load is in a range of from 0.1 Nm to 0.6 Nm.

公开(公告)号：US09696672B2

公开(公告)日：2017-07-04

申请号：US15132401

申请日：2016-04-19

申请人： Hiroshi Ono ,  Tetsuo Tokuda ,  Yoshikuni Sasaki ,  Hironori Yamaoka ,  Ryohhei Sugiyama ,  Yamano Motoyoshi

发明人： Hiroshi Ono ,  Tetsuo Tokuda ,  Yoshikuni Sasaki ,  Hironori Yamaoka ,  Ryohhei Sugiyama ,  Yamano Motoyoshi

IPC分类号： G03G15/20 ,  G03G21/16 ,  F16H25/14 ,  F16H37/12

CPC分类号： G03G15/2064 ,  F16H25/14 ,  F16H37/12 ,  G03G15/2025 ,  G03G21/1647 ,  G03G2215/0129 ,  G03G2215/2032

摘要： A drive transmission unit transmits driving force to a driven unit including a driven rotator coupled to the drive transmission unit via a unit coupler. The drive transmission unit includes a driving source, a drive transmission member to transmit driving force from the driving source to the driven rotator by engaging the driven rotator, and a basal plate with a turning shaft portion at one end thereof. The basal plate supports the driving source and the drive transmission member thereon. The drive transmission unit is turned around the turning shaft portion together with the driven unit in a direction substantially orthogonal to a direction of a driving reaction force applied to the drive transmission member when the driven rotator receives the driving force from the drive transmission member.

公开(公告)号：US20170146933A1

公开(公告)日：2017-05-25

申请号：US15352782

申请日：2016-11-16

申请人： Motoyoshi YAMANO ,  Tetsuo TOKUDA ,  Yoshikuni SASAKI ,  Hiroshi ONO ,  Hironori YAMAOKA ,  Ryohhei SUGIYAMA ,  Kohichi UTSUNOMIYA ,  Arinobu YOSHIURA ,  Hideo NAGAFUJI

发明人： Motoyoshi YAMANO ,  Tetsuo TOKUDA ,  Yoshikuni SASAKI ,  Hiroshi ONO ,  Hironori YAMAOKA ,  Ryohhei SUGIYAMA ,  Kohichi UTSUNOMIYA ,  Arinobu YOSHIURA ,  Hideo NAGAFUJI

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/2032 ,  G03G15/2064

摘要： A fixing device includes a heater, a fixing rotator, a pressure rotator to press against the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator, through which a recording medium is conveyed, a moving device to move the pressure rotator in directions in which the pressure rotator comes into contact with and separates from the fixing rotator, a thermal expansion amount predictor to predict an amount of thermal expansion of the fixing rotator while the recording medium is conveyed, and a nip width adjuster to control a moving distance of the pressure rotator moved by the moving device toward the fixing rotator, depending on the amount of thermal expansion of the fixing rotator predicted by the thermal expansion amount predictor, so as to adjust a width of the fixing nip to maintain a substantially constant width of the fixing nip.

公开(公告)号：US09645535B2

公开(公告)日：2017-05-09

申请号：US14311473

申请日：2014-06-23

申请人： Hironori Yamaoka ,  Shinichi Namekata ,  Tsukasa Satoh

发明人： Hironori Yamaoka ,  Shinichi Namekata ,  Tsukasa Satoh

IPC分类号： G03G15/20

CPC分类号： G03G15/2042

摘要： A fixing device includes a rotational member configured to convey and heat a sheet-shaped recording medium, the rotational member including a first heating member and a second heating member provided in parallel to a rotational axis of the rotational member in an interior thereof, the first heating member including a first heat generation part, the second heating member including a second heat generation part and an auxiliary heat generation part adjacent to the second heat generation part, a common temperature sensor configured to sense a temperature of the first heating member and a temperature of the second heating member, and a control part configured to control a ratio of a rate of lighting of the first heating member and a rate of lighting of the second heating member based on the temperature of the first heating member and the temperature of the second heating member.

公开(公告)号：US20170003633A1

公开(公告)日：2017-01-05

申请号：US15182034

申请日：2016-06-14

申请人： Takamasa HASE ,  Takashi Fujita ,  Seiji Saitoh ,  Kenji Ishii ,  Akiyasu Amita ,  Kenichi Hasegawa ,  Takashi Seto ,  Tetsuo Tokuda ,  Hiroshi Seo ,  Hironori Yamaoka

发明人： Takamasa HASE ,  Takashi Fujita ,  Seiji Saitoh ,  Kenji Ishii ,  Akiyasu Amita ,  Kenichi Hasegawa ,  Takashi Seto ,  Tetsuo Tokuda ,  Hiroshi Seo ,  Hironori Yamaoka

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064 ,  G03G2215/0636 ,  G03G2215/20 ,  G03G2215/2032 ,  G03G2215/2035

摘要： A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and a pressure rotator to press against the fixing rotator to form a fixing nip therebetween, through which a recording medium bearing a toner image is conveyed. A rotation load applicator is coupled to one of the fixing rotator and the pressure rotator to apply a rotation load to the one of the fixing rotator and the pressure rotator. The rotation load is in a range of from 0.1 Nm to 0.6 Nm.

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压力旋转器，以压靠固定旋转器，以在其间形成定影辊隙，通过该固定辊筒传送带有调色剂图像的记录介质。 旋转负载施加器联接到固定旋转器和压力旋转器中的一个，以向定影旋转器和压力旋转器中的一个施加旋转负载。 旋转载荷在0.1Nm至0.6Nm的范围内。

公开(公告)号：US10852671B2

公开(公告)日：2020-12-01

申请号：US16675912

申请日：2019-11-06

申请人： Takahiro Imada ,  Yoshio Hattori ,  Yoshikuni Sasaki ,  Hironori Yamaoka ,  Yasunori Ishigaya ,  Takumi Waida

发明人： Takahiro Imada ,  Yoshio Hattori ,  Yoshikuni Sasaki ,  Hironori Yamaoka ,  Yasunori Ishigaya ,  Takumi Waida

IPC分类号： G03G15/20

摘要： A fixing device includes a fixing rotator, a pressure rotator, a cleaner, and a moving assembly. The cleaner contacts and cleans a cleaning target, which includes one of the fixing rotator and the pressure rotator. The moving assembly moves the cleaner between a contact position at which the cleaner contacts the cleaning target and a separate position at which the cleaner is apart from the cleaning target. The moving assembly includes a biasing member that presses the cleaner to move to the contact position. The moving assembly moves the cleaner from the contact position to the separate position against a biasing force of the biasing member. The moving assembly moves the cleaner from the separate position to the contact position while increasing and then decreasing the biasing force of the biasing member greater than the biasing force applied when the cleaner is located at the contact position.

公开(公告)号：US20180088502A1

公开(公告)日：2018-03-29

申请号：US15708734

申请日：2017-09-19

申请人： Ryohhei SUGIYAMA ,  Hironori YAMAOKA ,  Takashi SAKAMAKI ,  Tetsuo TOKUDA ,  Akiyasu AMITA ,  Shinichi NAMEKATA ,  Yohhei WATANABE ,  Fumihiro HIROSE ,  Teppei KAWATA ,  Masateru UJIIE

发明人： Ryohhei SUGIYAMA ,  Hironori YAMAOKA ,  Takashi SAKAMAKI ,  Tetsuo TOKUDA ,  Akiyasu AMITA ,  Shinichi NAMEKATA ,  Yohhei WATANABE ,  Fumihiro HIROSE ,  Teppei KAWATA ,  Masateru UJIIE

IPC分类号： G03G15/20

CPC分类号： G03G15/2032 ,  G03G15/206 ,  G03G15/2064 ,  G03G2215/2032

摘要： An image forming apparatus includes a fixing belt stretched across a first roller and a second roller including an elastic layer. A pressure rotator presses against the second roller via the fixing belt to form a fixing nip between the pressure rotator and the fixing belt. A recording medium bearing a toner image is conveyed through the fixing nip. A clearance detector detects a clearance between the first roller and the second roller. A mover moves the pressure rotator with respect to the second roller in a pressing direction in which the pressure rotator presses against the second roller via the fixing belt and a separation direction in which the pressure rotator separates from the second roller. A controller controls an amount of movement of the pressure rotator moved by the mover toward the second roller based on the clearance detected by the clearance detector.

公开(公告)号：US09817345B2

公开(公告)日：2017-11-14

申请号：US15352782

申请日：2016-11-16

申请人： Motoyoshi Yamano ,  Tetsuo Tokuda ,  Yoshikuni Sasaki ,  Hiroshi Ono ,  Hironori Yamaoka ,  Ryohhei Sugiyama ,  Kohichi Utsunomiya ,  Arinobu Yoshiura ,  Hideo Nagafuji

发明人： Motoyoshi Yamano ,  Tetsuo Tokuda ,  Yoshikuni Sasaki ,  Hiroshi Ono ,  Hironori Yamaoka ,  Ryohhei Sugiyama ,  Kohichi Utsunomiya ,  Arinobu Yoshiura ,  Hideo Nagafuji

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/2032 ,  G03G15/2064

摘要： A fixing device includes a heater, a fixing rotator, a pressure rotator to press against the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator, through which a recording medium is conveyed, a moving device to move the pressure rotator in directions in which the pressure rotator comes into contact with and separates from the fixing rotator, a thermal expansion amount predictor to predict an amount of thermal expansion of the fixing rotator while the recording medium is conveyed, and a nip width adjuster to control a moving distance of the pressure rotator moved by the moving device toward the fixing rotator, depending on the amount of thermal expansion of the fixing rotator predicted by the thermal expansion amount predictor, so as to adjust a width of the fixing nip to maintain a substantially constant width of the fixing nip.