公开(公告)号：US20240319640A1

公开(公告)日：2024-09-26

申请号：US18603301

申请日：2024-03-13

申请人： Toshiyuki KABATA ,  Takayuki ANDOH ,  Masahiro SAMEI ,  Kota SHIODERA ,  Hiroshi YOSHINAGA ,  Tomoyuki NISHIKAWA ,  Yuusuke FURUICHI ,  Hiroyuki SHIMADA ,  Arinobu YOSHIURA

发明人： Toshiyuki KABATA ,  Takayuki ANDOH ,  Masahiro SAMEI ,  Kota SHIODERA ,  Hiroshi YOSHINAGA ,  Tomoyuki NISHIKAWA ,  Yuusuke FURUICHI ,  Hiroyuki SHIMADA ,  Arinobu YOSHIURA

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2039 ,  G03G15/2064 ,  G03G2215/2025

摘要： A heating device includes a rotator having an internal space, a heater heating the rotator, lubricant applied to the rotator, a rotator support supporting the rotator, and a cover. The rotator support has a first opening communicating with the internal space of the rotator, penetrating through the rotator support, and extending in the longitudinal direction. The cover covers the first opening and has a face facing the first opening and a second opening communicating with the internal space of the rotator and an exterior of the cover. The cover maintains a temperature of the face of the cover at 40° C. or higher.

公开(公告)号：US12038705B2

公开(公告)日：2024-07-16

申请号：US18060566

申请日：2022-11-30

申请人： Yuusuke Furuichi ,  Hiroyuki Shimada ,  Yukimichi Someya

发明人： Yuusuke Furuichi ,  Hiroyuki Shimada ,  Yukimichi Someya

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.

公开(公告)号：US20230408959A1

公开(公告)日：2023-12-21

申请号：US18329201

申请日：2023-06-05

申请人： Yukimichi SOMEYA ,  Yuusuke Furuichi ,  Tomoya Adachi ,  Hiroyuki Shimada

发明人： Yukimichi SOMEYA ,  Yuusuke Furuichi ,  Tomoya Adachi ,  Hiroyuki Shimada

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.

公开(公告)号：US20230288855A1

公开(公告)日：2023-09-14

申请号：US18151091

申请日：2023-01-06

申请人： Hiroyuki SHIMADA ,  Tomoya Adachi ,  Yukimichi Someya ,  Yuusuke Furuichi

发明人： Hiroyuki SHIMADA ,  Tomoya Adachi ,  Yukimichi Someya ,  Yuusuke Furuichi

IPC分类号： G03G15/20 ,  G03G15/00

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.

公开(公告)号：US20220299920A1

公开(公告)日：2022-09-22

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.

公开(公告)号：US20220299919A1

公开(公告)日：2022-09-22

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.

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.

公开(公告)号：US20200033777A1

公开(公告)日：2020-01-30

申请号：US16419068

申请日：2019-05-22

申请人： Ippei FUJIMOTO ,  Hiroyuki SHIMADA ,  Yoshiki YAMAGUCHI ,  Takashi SETO ,  Takayuki SEKI

发明人： Ippei FUJIMOTO ,  Hiroyuki SHIMADA ,  Yoshiki YAMAGUCHI ,  Takashi SETO ,  Takayuki SEKI

IPC分类号： G03G15/20

摘要： A fixing device includes a fixing rotator and a pressure rotator that is disposed opposite the fixing rotator. A nip former is disposed inside a loop formed by the fixing rotator and disposed opposite the pressure rotator via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The fixing rotator slides over the nip former. A flange supports the fixing rotator at both lateral ends of the fixing rotator in a longitudinal direction of the fixing rotator. The nip former includes a base and a thermal conductor that has a thermal conductivity greater than a thermal conductivity of the base. The base is greater than the thermal conductor in the longitudinal direction of the fixing rotator. The base includes a groove that is disposed outboard at least from the thermal conductor in the longitudinal direction of the fixing rotator.

公开(公告)号：US20190286025A1

公开(公告)日：2019-09-19

申请号：US16239948

申请日：2019-01-04

申请人： Yoshiki YAMAGUCHI ,  lppei FUJIMOTO ,  Hiroyuki SHIMADA ,  Takayuki SEKI ,  Takashi SETO ,  Yoshiyuki FUKUDA ,  Hiroshi YOSHINAGA

发明人： Yoshiki YAMAGUCHI ,  lppei FUJIMOTO ,  Hiroyuki SHIMADA ,  Takayuki SEKI ,  Takashi SETO ,  Yoshiyuki FUKUDA ,  Hiroshi YOSHINAGA

IPC分类号： G03G15/20

摘要： A fixing device includes a fixing rotator that is flexible, endless, and rotatable. A heater heats the fixing rotator. A pressure rotator is disposed opposite the fixing rotator. A nip former defines a fixing nip between the fixing rotator and the pressure rotator. A support supports the nip former. The nip former includes a back face that contacts the support and has a nonlinear shape in a longitudinal direction of the nip former.

公开(公告)号：US10261432B2

公开(公告)日：2019-04-16

申请号：US15451539

申请日：2017-03-07

申请人： Toshiyuki Kabata ,  Hiroyuki Shimada ,  Takeshi Shibuya

发明人： Toshiyuki Kabata ,  Hiroyuki Shimada ,  Takeshi Shibuya

IPC分类号： G03G9/087 ,  G03G15/20

摘要： An ester wax is provided. The ester wax includes a long-chain aliphatic ester represented by the following formula: R—COO—R′ wherein R represents an alky group having 13 to 23 carbon atoms and R′ represents an alkyl group having 18 to 22 carbon atoms. The ester wax further includes an aliphatic alcohol having 18 to 22 carbon atoms in an amount less than 3% by mass based on a total mass of the ester wax.