公开(公告)号：US20240353781A1

公开(公告)日：2024-10-24

申请号：US18627461

申请日：2024-04-05

申请人： Kentaro YAMASHITA ,  Takamasa HASE ,  Arinobu YOSHIURA ,  Daisuke INOUE ,  Mototaka IWAMA ,  Ryohhei SUGIYAMA

发明人： Kentaro YAMASHITA ,  Takamasa HASE ,  Arinobu YOSHIURA ,  Daisuke INOUE ,  Mototaka IWAMA ,  Ryohhei SUGIYAMA

IPC分类号： G03G15/20 ,  G03G15/00

CPC分类号： G03G15/205 ,  G03G15/2064 ,  G03G15/5004 ,  G03G2215/00978 ,  G03G2215/2035

摘要： A fixing device includes a first rotator and a second rotator that form a nip therebetween and fix an image on a recording medium that enters the nip. A heater heats at least one of the first rotator or the second rotator. A controller controls the heater to switch between a first heating and a second heating, to switch from the first heating to the second heating before the recording medium enters the nip, to start the second heating at a time prior to a nip entry time at which the recording medium enters the nip by a delay time period taken for the heater to conduct heat to the nip, and to continue the first heating before the second heating for at least one control cycle at a duty cycle of power supplied to the heater. The duty cycle is not greater than 40%.

公开(公告)号：US20160306311A1

公开(公告)日：2016-10-20

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

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.

摘要翻译： 驱动传递单元将驱动力传递到包括经由单元耦合器联接到驱动传输单元的从动转子的从动单元。 驱动传递单元包括驱动源，驱动传递构件，用于通过接合从动旋转体将驱动力传递到从动旋转体，以及在其一端具有转动轴部的基板。 基板在其上支撑驱动源和驱动传递构件。 驱动传递单元在被驱动旋转体受到来自驱动传递部件的驱动力的驱动传递部件的驱动反作用力的方向大致正交的方向上与被驱动部件一起转动。

公开(公告)号：US20240361712A1

公开(公告)日：2024-10-31

申请号：US18638723

申请日：2024-04-18

申请人： Hiroshi YOSHINAGA ,  Takashi SETO ,  Ryohhei SUGIYAMA ,  Ryohei MATSUDA ,  Yoshiki YAMAGUCHI

发明人： Hiroshi YOSHINAGA ,  Takashi SETO ,  Ryohhei SUGIYAMA ,  Ryohei MATSUDA ,  Yoshiki YAMAGUCHI

IPC分类号： G03G15/20

CPC分类号： G03G15/2028 ,  G03G15/2025 ,  G03G15/2064

摘要： A fixing device includes a fixing rotator, a heater, a pressure rotator, a nip formation pad, and a slide aid sheet. The fixing rotator is rotatable in a rotation direction. The heater heats the fixing rotator. The pressure rotator contacts an outer circumferential face of the fixing rotator. The nip formation pad is inside a loop of the fixing rotator to form a nip between the fixing rotator and the pressure rotator. The slide aid sheet is on the nip formation pad and faces the fixing rotator. The slide aid sheet includes a carbon fiber extending in a width direction orthogonal to a rotation direction of the fixing rotator.

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：US20240176265A1

公开(公告)日：2024-05-30

申请号：US18523956

申请日：2023-11-30

申请人： Ryohei MATSUDA ,  Yoshiki YAMAGUCHI ,  Takashi SETO ,  Hiroshi YOSHINAGA ,  Ryohhei SUGIYAMA

发明人： Ryohei MATSUDA ,  Yoshiki YAMAGUCHI ,  Takashi SETO ,  Hiroshi YOSHINAGA ,  Ryohhei SUGIYAMA

IPC分类号： G03G15/20

CPC分类号： G03G15/2007 ,  G03G15/2064

摘要： A fixing device includes a fixing rotator, a pressure rotator, a fixing nip support, a heat source, and a reflector. The pressure rotator contacts an outer face of the fixing rotator to form a nip through which a recording medium conveyed in a conveyance direction passes. The fixing nip support has a receiving portion to receive a pressing force of the pressure rotator. The heat source inside a loop of the fixing rotator has a heat generation area having a first length in a width direction orthogonal to the conveyance direction. The reflector includes a contacting portion contacting the receiving portion of the fixing nip support and a reflecting portion facing the heat source to reflect radiant heat radiated by the heat source toward an inner face of the fixing rotator. The reflecting portion has a second length in the width direction longer than the first length.

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.

公开(公告)号：US20170131666A1

公开(公告)日：2017-05-11

申请号：US15293881

申请日：2016-10-14

申请人： Ryohhei SUGIYAMA ,  Hiroshi ONO ,  Hironori YAMAOKA ,  Motoyoshi YAMANO ,  Yoshikuni SASAKI ,  Tetsuo TOKUDA

发明人： Ryohhei SUGIYAMA ,  Hiroshi ONO ,  Hironori YAMAOKA ,  Motoyoshi YAMANO ,  Yoshikuni SASAKI ,  Tetsuo TOKUDA

IPC分类号： G03G15/20

CPC分类号： G03G15/2039

摘要： An image forming apparatus includes a fixing rotator rotatable in a predetermined direction of rotation, over which a recording medium is conveyed, and a heater to heat the fixing rotator. A temperature detector detects a temperature of the fixing rotator. A controller performs a primary productivity control to define a primary productivity rate of printing per unit time based on the temperature of the fixing rotator that is detected by the temperature detector. The controller calculates an amount of power suppliable to the heater and performs a secondary productivity control simultaneously with and separately from the primary productivity control. The secondary productivity control defines a secondary productivity rate of printing per unit time based on the amount of power suppliable to the heater. The controller selects one of the primary conductivity rate and the secondary productivity rate whichever is lower as a productivity rate of the image forming apparatus.

公开(公告)号：US20240176268A1

公开(公告)日：2024-05-30

申请号：US18510632

申请日：2023-11-15

申请人： Hiroshi YOSHINAGA ,  Yoshiki YAMAGUCHI ,  Takashi SETO ,  Ryohei MATSUDA ,  Ryohhei SUGIYAMA

发明人： Hiroshi YOSHINAGA ,  Yoshiki YAMAGUCHI ,  Takashi SETO ,  Ryohei MATSUDA ,  Ryohhei SUGIYAMA

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064 ,  G03G2215/2029

摘要： A fixing device includes a fixing member, a pressing member, a heat source, and a reflecting member. The pressing member presses and contacts an outer circumferential surface of the fixing member. The heat source is disposed inside a loop of the fixing member. The reflecting member includes a reflecting portion, a pressure receiving portion, and an extending portion. The reflecting portion reflects heat toward an inner circumferential surface of the fixing member. The pressure receiving portion receives a pressing force of the pressing member via the fixing member. The extending portion extends from an area upstream to an area downstream from the nip portion in a direction of rotation of the fixing member and facing the inner circumferential surface of the fixing member. The reflecting member is in non-contact with one or more of members disposed inside the loop of the fixing member, at least when the fixing member rotates.

公开(公告)号：US20240004329A1

公开(公告)日：2024-01-04

申请号：US18207153

申请日：2023-06-08

申请人： Hiroshi YOSHINAGA ,  Takayuki ANDOH ,  Masahiro SAMEI ,  Kota SHIODERA ,  Toshiyuki KABATA ,  Ryohhei SUGIYAMA

发明人： Hiroshi YOSHINAGA ,  Takayuki ANDOH ,  Masahiro SAMEI ,  Kota SHIODERA ,  Toshiyuki KABATA ,  Ryohhei SUGIYAMA

IPC分类号： G03G15/20

CPC分类号： G03G15/2053

摘要： A heating device includes a rotator that rotates and a heater that is disposed opposite an inner circumferential face of the rotator. The heater heats the rotator. A rotator holder is disposed opposite the inner circumferential face of the rotator. The rotator holder holds a lateral end of the rotator in a longitudinal direction of the rotator. The rotator holder is adhered with a lubricating substance. A heat shield is disposed between the heater and the rotator and between the heater and the rotator holder. The heat shield blocks radiant heat radiated from the heater and is separated from the rotator holder. The heat shield includes a first portion and a second portion that is disposed outboard from the first portion in the longitudinal direction of the rotator. The second portion is separated from the inner circumferential face of the rotator farther than the first portion is.