公开(公告)号：US20240160132A1

公开(公告)日：2024-05-16

申请号：US18387853

申请日：2023-11-08

申请人： Takuya SESHITA ,  Takahiro IMADA

发明人： Takuya SESHITA ,  Takahiro IMADA

IPC分类号： G03G15/20

CPC分类号： G03G15/2042 ,  G03G15/2064 ,  G03G2215/2025

摘要： A fixing device includes a fixing rotator, a pressure rotator, a heater, a temperature responsive element, and a fastener. The pressure rotator presses the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The heater heats the fixing rotator. The temperature responsive element is exposed outside the fixing device and fixed to the fastener. The fastener is exposed outside the fixing device.

公开(公告)号：US11971674B2

公开(公告)日：2024-04-30

申请号：US17574578

申请日：2022-01-13

申请人： Shigeo Nanno ,  Yasunori Ishigaya ,  Takahiro Imada ,  Takumi Waida ,  Daisuke Hirano

发明人： Shigeo Nanno ,  Yasunori Ishigaya ,  Takahiro Imada ,  Takumi Waida ,  Daisuke Hirano

IPC分类号： G03G15/20

CPC分类号： G03G15/2057 ,  G03G15/2064 ,  G03G2215/2038

摘要： A heating device includes a rotator, a heater, a heater holder, and a first high thermal conduction member. The heater includes a base and a plurality of heat generators being arranged on the base and including neighboring heat generators. The heater has a gap area between the neighboring heat generators. The first high thermal conduction member has a higher thermal conductivity than the base and faces the gap area.

公开(公告)号：US20230008258A1

公开(公告)日：2023-01-12

申请号：US17852381

申请日：2022-06-29

申请人： Hiromasa TAKAGI ,  Seiji SAITOH ,  Jun OKAMOTO ,  Tamotsu IKEDA ,  Yoshikuni SASAKI ,  Takahiro IMADA

发明人： Hiromasa TAKAGI ,  Seiji SAITOH ,  Jun OKAMOTO ,  Tamotsu IKEDA ,  Yoshikuni SASAKI ,  Takahiro IMADA

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

摘要： An image forming apparatus includes two rotators, a driver driving the rotators, a heating device to heat the rotator, a blower blowing air to the heating device, a temperature detector, a recording medium detector, a cover, an open-close detector, and circuitry. The circuitry detects an abnormal state and stops heat generation, determines whether the cover is closed using the open-close detector, controls the blower to blow air when the cover is closed, determines whether the recording medium is in the nip using the recording medium detector, controls the driver to rotate the two rotators when the cover is closed and no recording medium is in the nip, determines whether a temperature detected is equal to or lower than a threshold value before the cover is opened, and controls the blower to decrease an air volume when the temperature detected is equal to or lower than the threshold value.

公开(公告)号：US20230004107A1

公开(公告)日：2023-01-05

申请号：US17825471

申请日：2022-05-26

申请人： Seiji SAITOH ,  Takahiro IMADA ,  Yoshikuni SASAKI ,  Tamotsu IKEDA ,  Hiromasa TAKAGI ,  Jun OKAMOTO

发明人： Seiji SAITOH ,  Takahiro IMADA ,  Yoshikuni SASAKI ,  Tamotsu IKEDA ,  Hiromasa TAKAGI ,  Jun OKAMOTO

IPC分类号： G03G15/20

摘要： A contact-separation device brings a contact-separation member into contact with a contacted member separably and includes a biasing member that generates a biasing force. A presser presses the contact-separation member against the contacted member in a pressing direction with the biasing force from the biasing member. A cam presses the presser in an opposite direction being opposite to the pressing direction. The cam is rotatable and has a cam face. A cam follower has a cam contact face that contacts the cam face of the cam. The cam contact face is curved to project toward the cam. The cam contact face has a curvature that is smaller than a greatest curvature of the cam face of the cam and is greater than a smallest curvature of the cam face of the cam.

公开(公告)号：US20220291615A1

公开(公告)日：2022-09-15

申请号：US17574578

申请日：2022-01-13

申请人： Shigeo NANNO ,  Yasunori ISHIGAYA ,  Takahiro IMADA ,  Takumi WAIDA ,  Daisuke HIRANO

发明人： Shigeo NANNO ,  Yasunori ISHIGAYA ,  Takahiro IMADA ,  Takumi WAIDA ,  Daisuke HIRANO

IPC分类号： G03G15/20

摘要： A heating device includes a rotator, a heater, a heater holder, and a first high thermal conduction member. The heater includes a base and a plurality of heat generators being arranged on the base and including neighboring heat generators. The heater has a gap area between the neighboring heat generators. The first high thermal conduction member has a higher thermal conductivity than the base and faces the gap area.

公开(公告)号：US20220155712A1

公开(公告)日：2022-05-19

申请号：US17501290

申请日：2021-10-14

申请人： Takahiro IMADA ,  Yasunori ISHIGAYA ,  Shigeo NANNO ,  Takumi WAIDA ,  Daisuke HIRANO

发明人： Takahiro IMADA ,  Yasunori ISHIGAYA ,  Shigeo NANNO ,  Takumi WAIDA ,  Daisuke HIRANO

IPC分类号： G03G15/20

摘要： A heating device includes a heating rotator, a pressure rotator, a planar heater, and a holder. The pressure rotator is configured to press against the fixing rotator to form a nip through which the recording medium is conveyed. The planar heater includes a plurality of heat generators arranged side by side and at least one separation region between the plurality of heat generators. The holder holds the planar heater and contacts the planar heater in a pressure direction in which the pressure rotator presses the heating rotator. The holder includes at least one clearance structure configured to cause a contact area between the planar heater and a portion of the holder corresponding to the at least one separation region to be smaller than a contact area between the planar heater and a portion of the holder not corresponding to the at least one separation region.

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：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.