公开(公告)号：US12130583B2

公开(公告)日：2024-10-29

申请号：US18197748

申请日：2023-05-16

申请人： Taira Otsuka ,  Hiroyuki Sugiyama ,  Takuya Seshita

发明人： Taira Otsuka ,  Hiroyuki Sugiyama ,  Takuya Seshita

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

CPC分类号： G03G21/20 ,  G03G15/50

摘要： An image forming apparatus includes a fixing device, a temperature detector, and processing circuitry. The fixing device fixes a toner image on a surface of a sheet by heating of a heater. The temperature detector detects an internal temperature of the image forming apparatus. The processing circuitry switches a continuous print mode to an intermittent print mode when the internal temperature is equal to or higher than a first execution temperature during the continuous print mode. The processing circuitry cancels the intermittent print mode and switches to the continuous print mode when the internal temperature is equal to or lower than a first cancellation temperature. The processing circuitry causes the heater to stop heating the fixing device in the intermittent print mode when the internal temperature is higher than the first cancellation temperature even after a predetermined time has elapsed since a start of the intermittent print mode.

公开(公告)号：US11567435B2

公开(公告)日：2023-01-31

申请号：US17559230

申请日：2021-12-22

申请人： Takuya Seshita

发明人： Takuya Seshita

IPC分类号： G03G15/20

摘要： A fixing device includes a rotator, a heat source to heat the rotator, a first thermal equalization plate, a second thermal equalization plate, and an overheating preventer. The first thermal equalization plate and the second equalization plate are in contact with the heat source. The overheating preventer is in contact with one end of the second thermal equalization plate in an axial direction of the rotator. The first thermal equalization plate is in contact with a portion of the heat source, and the portion of the heat source is farther from a center of the rotator than the one end of the second thermal equalization plate in the axial direction of the rotator. The first thermal equalization plate is spaced apart from the one end of the second thermal equalization plate.

公开(公告)号：US20200033764A1

公开(公告)日：2020-01-30

申请号：US16521914

申请日：2019-07-25

申请人： Hiroshi Kajiyama ,  Naoki Iwaya ,  Hitoshi Fujiwara ,  Takuya Seshita ,  Takahiro Imada ,  Yoshiharu Takahashi ,  Natsuki Watanabe

发明人： Hiroshi Kajiyama ,  Naoki Iwaya ,  Hitoshi Fujiwara ,  Takuya Seshita ,  Takahiro Imada ,  Yoshiharu Takahashi ,  Natsuki Watanabe

IPC分类号： G03G15/20

摘要： An image forming apparatus includes a pressing device, an apparatus body, an opening body, and a vibration insulator. The pressing device housed in the apparatus body is configured to press a pressing body to a pressing target body. The opening body is configured to open and close to the apparatus body. The opening body presses a pressing target portion of the apparatus body, at a first pressing portion to cancel a pressing state of the pressing device by opening of the opening body and at a second pressing portion to enter the pressing state of the pressing device by closing of the opening body. The vibration insulator is provided on at least one of the pressing target portion and the second pressing portion, at a contact portion at which the pressing target portion contacts the second pressing portion when the first pressing portion cancels the pressing state.

公开(公告)号：US20180329342A1

公开(公告)日：2018-11-15

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

CPC分类号： G03G15/205 ,  G03G15/1615 ,  G03G15/2025 ,  G03G15/2053 ,  G03G15/206 ,  G03G15/2064 ,  G03G2215/2035

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：US09927748B2

公开(公告)日：2018-03-27

申请号：US13751648

申请日：2013-01-28

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

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

IPC分类号： G03G15/20

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

摘要： A fixing device includes: a rotatable endless fixing belt; a nip forming member arranged inside the fixing belt; a facing rotating body that abuts the nip forming member via the fixing belt to form a nip portion with the fixing belt; a heat source that directly heats up the fixing belt at a portion other than the nip portion; and a supporting member that supports the nip forming member. The fixing device conveys a recording medium carrying an unfixed image to the nip portion to fix the unfixed image to the recording medium, and the supporting member includes a rising portion extending in an abutting direction of the facing rotating body against the fixing belt and having a tip close to an inner circumferential surface of the fixing belt, and is set to have a section modulus of 200 mm3 or higher.

公开(公告)号：US09715197B2

公开(公告)日：2017-07-25

申请号：US15202878

申请日：2016-07-06

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

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

IPC分类号： G03G15/20

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

摘要： A fixing device includes a fixing rotator, a heat source, a controller, a pressure rotator, and a nip formation pad. The controller controls the heat source such that a temperature of the fixing rotator is equal to a preset fixing temperature. The nip formation pad abuts the pressure rotator via the fixing rotator and forms a nip between the fixing rotator and the pressure rotator. When a print time of a previous job is longer than a prescribed time A and a next job is started within a prescribed time B after an end of the previous job, the controller corrects the preset fixing temperature during a time from a start of the next job to an entry of a print sheet into the nip and during a time from the entry of the print sheet into the nip to a lapse of a prescribed time C after the entry.

公开(公告)号：US20170102652A1

公开(公告)日：2017-04-13

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： According to an embodiments, a fixing device includes: 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.

公开(公告)号：US20170010569A1

公开(公告)日：2017-01-12

申请号：US15202878

申请日：2016-07-06

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

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

IPC分类号： G03G15/20

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

摘要： A fixing device includes a fixing rotator, a heat source, a controller, a pressure rotator, and a nip formation pad. The controller controls the heat source such that a temperature of the fixing rotator is equal to a preset fixing temperature. The nip formation pad abuts the pressure rotator via the fixing rotator and forms a nip between the fixing rotator and the pressure rotator. When a print time of a previous job is longer than a prescribed time A and a next job is started within a prescribed time B after an end of the previous job, the controller corrects the preset fixing temperature during a time from a start of the next job to an entry of a print sheet into the nip and during a time from the entry of the print sheet into the nip to a lapse of a prescribed time C after the entry.

摘要翻译： 定影装置包括固定旋转器，热源，控制器，压力旋转器和压区形成垫。 控制器控制热源，使得定影旋转器的温度等于预定的定影温度。 压区形成垫通过固定旋转体与压力旋转体抵接，并在固定旋转体和压力旋转体之间形成辊隙。 当先前作业的打印时间长于规定时间A，并且在上次作业结束之后的规定时间B内开始下一作业时，控制器在下一个开始的时间内校正预设定影温度 作业到打印纸的进入到辊隙中，并且在从打印纸进入辊隙到经过预定时间C之后的时间内。

公开(公告)号：US09454114B2

公开(公告)日：2016-09-27

申请号：US14682509

申请日：2015-04-09

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

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

IPC分类号： G03G15/20

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

摘要： A fixing device including a fixing member, an opposing member, a plurality of heat sources, and a voltage detector. The opposing member is disposed opposite the fixing member to contact the fixing member to form a nip portion at which an unfixed image on a recording medium is fixed. The plurality of heat sources heats the fixing member. The voltage detector detects an applied voltage of at least one of the plurality of heat sources. Upon detection of the applied voltage of the heat sources by the voltage detector, a voltage is applied to at least one of the heat sources.

公开(公告)号：US09244411B2

公开(公告)日：2016-01-26

申请号：US13930582

申请日：2013-06-28

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

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

IPC分类号： G03G15/20

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

摘要： A fixing device includes a rotatable, endless belt, a stationary heater, a stationary pad, a rotatable pressure member, and a heat conductive member. The rotatable, endless belt is looped into a generally cylindrical configuration. The stationary heater is disposed inside the loop of the belt to radiate heat to the belt. The stationary pad is disposed inside the loop of the belt. The rotatable pressure member is disposed parallel to the stationary pad with the belt interposed between the pressure member and the stationary pad. The pressure member presses against the stationary pad via the belt to form a fixing nip therebetween through which a recording medium passes. The heat conductive member is interposed between the belt and the heater to transfer heat radiated from the heater by conduction therethrough to the belt.

摘要翻译： 固定装置包括可旋转的环形带，固定加热器，固定垫，可旋转压力构件和导热构件。 可旋转的环形带环绕成大致圆柱形的构造。 固定加热器设置在带的环内，以将热量辐射到带上。 固定垫设置在带的环内。 可旋转的压力构件平行于固定衬垫设置，其中带插入在压力构件和固定衬垫之间。 压力构件经由带压靠固定衬垫，以在记录介质通过该固定夹持件之间形成定影夹持部。 导热构件插入在带和加热器之间，以将从加热器辐射的热量传导通过其传送到带。