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公开(公告)号：US11635718B2
公开(公告)日：2023-04-25
申请号：US17686622
申请日：2022-03-04
申请人： Daisuke Inoue , Yuusuke Furuichi , Hiroyuki Shimada , Yukimichi Someya , Satoshi Tohkai , Yumiko Hayashi
发明人： Daisuke Inoue , Yuusuke Furuichi , Hiroyuki Shimada , Yukimichi Someya , Satoshi Tohkai , Yumiko Hayashi
IPC分类号： G03G15/20
摘要： A fixing device includes a rotator, a secured member, a pressure rotator, and lubricant. The rotator has flexibility and a sleeve form. The rotator includes an inner portion having a sliding surface. The inner portion has an elastic power of 55% or more. The secured member is disposed inside a loop of the rotator and has a slide surface on which the sliding surface of the rotator is to slide. The slide surface has a smaller surface roughness in a sliding direction of the rotator than a surface roughness of the sliding surface in the sliding direction of the rotator. The pressure rotator presses the rotator against the secured member and forms a nip between the rotator and the pressure rotator. The lubricant is provided between the rotator and the secured member.
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公开(公告)号：US11592770B2
公开(公告)日：2023-02-28
申请号：US17692177
申请日：2022-03-11
申请人： Hiroyuki Shimada , Yukimichi Someya , Yuusuke Furuichi , Daisuke Inoue , Satoshi Tohkai , Yumiko Hayashi
发明人： Hiroyuki Shimada , Yukimichi Someya , Yuusuke Furuichi , Daisuke Inoue , Satoshi Tohkai , Yumiko Hayashi
IPC分类号： G03G15/20
摘要： A fixing device includes a rotator, a secured member, a pressure rotator, and lubricant. The rotator has flexibility and a sleeve form. The rotator includes an inner portion having a sliding surface. The inner portion has an elastic power of 55% or more. The secured member is disposed inside a loop of the rotator and has a slide surface on which the sliding surface of the rotator slides. The slide surface has a larger hardness than a hardness of the sliding surface of the rotator. The pressure rotator presses the rotator against the secured member and forms a nip between the rotator and the pressure rotator. The lubricant is provided between the rotator and the secured member.
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公开(公告)号：US12038705B2
公开(公告)日：2024-07-16
申请号：US18060566
申请日：2022-11-30
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2028 , G03G15/2064 , G03G2215/2038
摘要： A nip forming device includes an endless belt that is flexible and rotates and a nip former that is disposed opposite an inner circumferential face of the endless belt. A pressure rotator presses against the nip former via the endless belt to form a nip between the endless belt and the pressure rotator, through which a conveyed object is conveyed. A separator is disposed downstream from the nip in a conveyance direction of the conveyed object. The separator separates the conveyed object from the endless belt. The separator includes a non-contact portion separated from the endless belt and a contact portion that contacts the endless belt. The contact portion retains a gap having a predetermined size between the non-contact portion and the endless belt.
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公开(公告)号：US20230408959A1
公开(公告)日：2023-12-21
申请号：US18329201
申请日：2023-06-05
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2028
摘要： A fixing device includes a first rotator, a second rotator, a heater, a nip formation pad, and a separator. The second rotator contacts an outer circumferential surface of the first rotator to form a nip between the first rotator and the second rotator. The heater includes a resistive heat generator to heat the first rotator. The nip formation pad contacts an inner circumferential surface of the first rotator to form the nip. The separator separates a recording medium passing through the nip from the first rotator. The separator includes a separating surface and a contact. The separating surface is separated from the outer circumferential surface of the first rotator and separates the recording medium from the first rotator. The contact contacts the outer circumferential surface of the first rotator at a position where the first rotator is pinchable between the contact and the nip formation pad.
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公开(公告)号：US12092978B2
公开(公告)日：2024-09-17
申请号：US18329201
申请日：2023-06-05
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2028
摘要： A fixing device includes a first rotator, a second rotator, a heater, a nip formation pad, and a separator. The second rotator contacts an outer circumferential surface of the first rotator to form a nip between the first rotator and the second rotator. The heater includes a resistive heat generator to heat the first rotator. The nip formation pad contacts an inner circumferential surface of the first rotator to form the nip. The separator separates a recording medium passing through the nip from the first rotator. The separator includes a separating surface and a contact. The separating surface is separated from the outer circumferential surface of the first rotator and separates the recording medium from the first rotator. The contact contacts the outer circumferential surface of the first rotator at a position where the first rotator is pinchable between the contact and the nip formation pad.
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公开(公告)号：US11947296B2
公开(公告)日：2024-04-02
申请号：US18151091
申请日：2023-01-06
CPC分类号： G03G15/2064 , G03G15/2053 , G03G15/5004 , G03G2215/2025
摘要： A nip forming device includes an endless film and a pressure rotator that presses against a heater via the endless film. A driver drives and rotates the pressure rotator to cause the pressure rotator to drive and rotate the endless film. A controller controls the driver to drive and rotate the pressure rotator, based on a temperature of the pressure rotator, that is detected by a detector, in a forward direction to convey a conveyed object and to interrupt forward rotation of the pressure rotator. In response to a determination that the temperature of the pressure rotator is higher than a predetermined temperature when a job of the nip forming device is finished, the controller controls the driver to drive and rotate the pressure rotator for a predetermined time in a backward direction opposite to the forward direction and to interrupt backward rotation of the pressure rotator.
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公开(公告)号：US11829091B2
公开(公告)日：2023-11-28
申请号：US17863404
申请日：2022-07-13
申请人： Hiroyuki Shimada , Yukimichi Someya , Yuusuke Furuichi , Daisuke Inoue , Satoshi Tohkai , Yumiko Hayashi
发明人： Hiroyuki Shimada , Yukimichi Someya , Yuusuke Furuichi , Daisuke Inoue , Satoshi Tohkai , Yumiko Hayashi
IPC分类号： G03G15/20
CPC分类号： G03G15/2057 , G03G15/2017 , G03G15/2025 , G03G15/2053 , G03G2215/2003 , G03G2215/2016 , G03G2215/2035
摘要： A belt device includes a belt, a secured member, a pressure rotator, and lubricant. The belt is rotatable and has an endless shape. The belt includes an inner portion having an inner circumferential surface. The inner portion has an elastic power of 55% or more. The inner circumferential surface of the belt slides on the secured member. The pressure rotator includes a porous elastic body and presses the secured member via the belt to form a nip between the belt and the pressure rotator. The lubricant is interposed between the inner circumferential surface of the belt and the secured member.
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公开(公告)号：US11846903B2
公开(公告)日：2023-12-19
申请号：US17742912
申请日：2022-05-12
申请人： Daisuke Inoue , Yuusuke Furuichi , Hiroyuki Shimada , Yukimichi Someya , Satoshi Tohkai , Yumiko Hayashi
发明人： Daisuke Inoue , Yuusuke Furuichi , Hiroyuki Shimada , Yukimichi Someya , Satoshi Tohkai , Yumiko Hayashi
IPC分类号： G03G15/20
CPC分类号： G03G15/2053
摘要： A belt device includes a secured member, a belt, a pressure rotator, and lubricant. The belt has an endless shape and slides on a slide surface of the secured member. The belt has an inner portion having an elastic power of 55% or more and a sliding surface sliding on the slide surface of the secured member. The sliding surface has a surface roughness smaller than a surface roughness of the slide surface of the secured member. The pressure rotator presses the secured member via the belt to form a nip between the belt and the pressure rotator. The lubricant is interposed between the sliding surface of the belt and the slide surface of the secured member.
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公开(公告)号：US20240319641A1
公开(公告)日：2024-09-26
申请号：US18604556
申请日：2024-03-14
申请人： Takayuki Andoh , Masahiro Samei , Kota Shiodera , Toshiyuki Kabata , Hiroshi Yoshinaga , Tomoyuki Nishikawa , Yuusuke Furuichi , Hiroyuki Shimada , Arinobu Yoshiura
发明人： Takayuki Andoh , Masahiro Samei , Kota Shiodera , Toshiyuki Kabata , Hiroshi Yoshinaga , Tomoyuki Nishikawa , Yuusuke Furuichi , Hiroyuki Shimada , Arinobu Yoshiura
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2025
摘要： A heating device includes a rotator, a heater, lubricant applied to the rotator, a rotator support, and a cover. The rotator has an internal space inside a loop of the rotator. The heater heats the rotator. The lubricant is applied to an inner circumferential surface of the rotator. The rotator support supports an end of the rotator in a longitudinal direction of the rotator and has an opening communicating with the internal space of the rotator and penetrating through the rotator support to extend in the longitudinal direction. The cover covers the opening of the rotator support.
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公开(公告)号：US10884365B2
公开(公告)日：2021-01-05
申请号：US16736876
申请日：2020-01-08
申请人： Hiroyuki Shimada
发明人： Hiroyuki Shimada
IPC分类号： G03G15/20
摘要： A fixing device includes an endless fixing rotator, a heater, a nip formation pad, and a pressure rotator. The heater is disposed opposite an inner circumferential surface of the fixing rotator to heat the fixing rotator. The nip formation pad is disposed opposite the inner circumferential surface of the fixing rotator that is slidable over the nip formation pad. The pressure rotator is configured to press against the nip formation pad via the fixing rotator to form a fixing nip through which a recording medium bearing a toner image is conveyed while being sandwiched between the fixing rotator and the pressure rotator. The nip formation pad includes a base and a thermal equalizer having a thermal conductivity higher than a thermal conductivity of the base. The nip formation pad has a nip face opposite the fixing nip. The thermal equalizer is disposed in at least part of the nip face.
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