公开(公告)号：US20170176906A1

公开(公告)日：2017-06-22

申请号：US15375817

申请日：2016-12-12

申请人： Kazunari SAWADA ,  Kenji ISHII ,  Kazuhito KISHI ,  Takayuki SEKI ,  Ippei FUJIMOTO ,  Takashi SETO ,  Hiroshi YOSHINAGA ,  Misaki SHIMIZU

发明人： Kazunari SAWADA ,  Kenji ISHII ,  Kazuhito KISHI ,  Takayuki SEKI ,  Ippei FUJIMOTO ,  Takashi SETO ,  Hiroshi YOSHINAGA ,  Misaki SHIMIZU

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G2215/2035

摘要： A fixing device includes a flexible endless belt formed into a loop and having an inner circumferential surface, a heater to heat the endless belt, and a nip formation assembly disposed inside the loop formed by the endless belt. The nip formation assembly includes a pressure pad made of heat-resistant resin including a hollow filler, and a supplementary thermal conductor having a belt sliding-contact face over which the inner circumferential surface of the endless belt slides. The supplementary thermal conductor is interposed between the endless belt and the pressure pad to conduct heat from the heater in an axial direction of the endless belt. The fixing device further includes a pressure rotator to press against the nip formation assembly via the endless belt to form a fixing nip between the endless belt and the pressure rotator, through which a recording medium bearing a toner image is conveyed.

公开(公告)号：US20180157198A1

公开(公告)日：2018-06-07

申请号：US15804459

申请日：2017-11-06

申请人： Takashi SETO ,  Kenji ISHII ,  Hiroshi YOSHINAGA ,  Takayuki SEKI ,  Ippei FUJIMOTO ,  Hiroyuki SHIMADA ,  Kazunari SAWADA ,  Ryohei MATSUDA

发明人： Takashi SETO ,  Kenji ISHII ,  Hiroshi YOSHINAGA ,  Takayuki SEKI ,  Ippei FUJIMOTO ,  Hiroyuki SHIMADA ,  Kazunari SAWADA ,  Ryohei MATSUDA

IPC分类号： G03G15/20

CPC分类号： G03G15/2025 ,  G03G15/2028 ,  G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes a belt, a pressure rotator disposed opposite the belt, and a nip formation unit that forms a fixing nip between the belt and the pressure rotator. The nip formation unit includes a guide face disposed upstream from the fixing nip in a rotation direction of the belt and contoured to separate from the pressure rotator in a direction opposite the rotation direction of the belt. The guide face is adhered with a lubricant moved from an inner circumferential surface of the belt. The belt rotates in the rotation direction when an outer circumferential surface of the belt has a temperature lower than a fixing temperature at which the belt fixes a toner image on a recording medium. The belt rotating in the rotation direction brings the lubricant adhered to the guide face into contact with the belt.

公开(公告)号：US20180017910A1

公开(公告)日：2018-01-18

申请号：US15627704

申请日：2017-06-20

申请人： Kazunari SAWADA ,  Ippei FUJIMOTO ,  Kenji ISHII ,  Takashi SETO ,  Hiroshi YOSHINAGA ,  Takayuki SEKI

发明人： Kazunari SAWADA ,  Ippei FUJIMOTO ,  Kenji ISHII ,  Takashi SETO ,  Hiroshi YOSHINAGA ,  Takayuki SEKI

IPC分类号： G03G15/20

CPC分类号： G03G15/2025 ,  G03G15/2032 ,  G03G15/2053 ,  G03G2215/025 ,  G03G2215/2035

摘要： A fixing device includes a nip former including a first face to form a fixing nip, a second face being disposed upstream from the first face in a rotation direction of a rotator and defining a predetermined angle relative to the first face, and a bent portion coupling the first face to the second face. An inner circumferential surface of the rotator slides over the first face. A lateral end accumulation portion and a center accumulation portion are defined by the second face and the bent portion of the nip former and the inner circumferential surface of the rotator. The lateral end accumulation portion is accumulated with a lubricant in a first amount. The center accumulation portion is disposed inboard from the lateral end accumulation portion in an axial direction of the rotator and accumulated with the lubricant in a second amount greater than the first amount.

公开(公告)号：US20240092595A1

公开(公告)日：2024-03-21

申请号：US18369235

申请日：2023-09-18

申请人： Kohki ASADA ,  Kenji NOZAWA ,  Genichiroh KAWAMICHI ,  Takayuki SEKI ,  Kazuaki KAMIHARA ,  Ryusaku HIDA

发明人： Kohki ASADA ,  Kenji NOZAWA ,  Genichiroh KAWAMICHI ,  Takayuki SEKI ,  Kazuaki KAMIHARA ,  Ryusaku HIDA

IPC分类号： B65H5/02 ,  B41J11/00 ,  B65H5/36

CPC分类号： B65H5/021 ,  B41J11/00214 ,  B41J11/0024 ,  B41J11/007 ,  B65H5/36 ,  B65H2301/517

摘要： A conveyance device includes a conveyance member, a guide, and a rotator. The conveyance member has a conveyance surface with a joint, the conveyance member to convey an object to be conveyed, with the object on the conveyance surface. The guide approaches the conveyance surface and guides the object from or to the conveyance member. The rotator contacts the conveyance surface. The guide displaces in a direction perpendicular to the conveyance surface, in conjunction with displacement of the rotator when the rotator contacts the joint.

公开(公告)号：US20200249604A1

公开(公告)日：2020-08-06

申请号：US16736995

申请日：2020-01-08

申请人： Tomoya ADACHI ,  Yuusuke FURUICHI ,  Yukimichi SOMEYA ,  Takayuki SEKI

发明人： Tomoya ADACHI ,  Yuusuke FURUICHI ,  Yukimichi SOMEYA ,  Takayuki SEKI

IPC分类号： G03G15/20

摘要： A heating device includes an endless rotator that rotates in a rotation direction and a heater that contacts an inner circumferential surface of the endless rotator and extends in an axial direction of the endless rotator. An elastic body contacts the inner circumferential surface of the endless rotator and is disposed downstream from the heater in the rotation direction of the endless rotator. A holder holds the heater and the elastic body. A pressure rotator is disposed opposite the heater and the elastic body via the endless rotator to form a nip between the endless rotator and the pressure rotator. A motion restrictor is mounted on the holder. The motion restrictor restricts motion of the heater downstream in the rotation direction of the endless rotator.

公开(公告)号：US20170255147A1

公开(公告)日：2017-09-07

申请号：US15440179

申请日：2017-02-23

申请人： Takayuki SEKI ,  Kenji ISHll ,  Hiroshi YOSHINAGA ,  Takashi SETO ,  lppei FUJIMOTO ,  Kazunari SAWADA ,  Ryohei MATSUDA

发明人： Takayuki SEKI ,  Kenji ISHll ,  Hiroshi YOSHINAGA ,  Takashi SETO ,  lppei FUJIMOTO ,  Kazunari SAWADA ,  Ryohei MATSUDA

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2039 ,  G03G15/2042 ,  G03G15/2046 ,  G03G15/2057 ,  G03G2215/0132 ,  G03G2215/2035

摘要： A fixing device includes a fixing rotator, an opposed rotator disposed opposite the fixing rotator, a pressure pad, a lateral end heater, and a thermal conduction aid. The pressure pad presses against the opposed rotator via the fixing rotator to form a fixing nip between the fixing rotator and the opposed rotator. The lateral end heater is disposed on the pressure pad to heat a lateral end of the fixing rotator in the axial direction of the fixing rotator. The thermal conduction aid is interposed between the pressure pad and the fixing rotator to decrease a temperature gradient of the fixing rotator in an axial direction of the fixing rotator. The pressure pad includes a nip-side face disposed opposite the thermal conduction aid. The lateral end heater includes a nip-side face being disposed opposite the thermal conduction aid and projecting beyond the nip-side face of the pressure pad.

公开(公告)号：US20240351351A1

公开(公告)日：2024-10-24

申请号：US18640017

申请日：2024-04-19

申请人： Takayuki SEKI ,  Kenji NOZAWA ,  Kohki ASADA ,  Genichiroh KAWAMICHI ,  Takehiro NAKAMURA ,  Hiroki ISHIHARA

发明人： Takayuki SEKI ,  Kenji NOZAWA ,  Kohki ASADA ,  Genichiroh KAWAMICHI ,  Takehiro NAKAMURA ,  Hiroki ISHIHARA

IPC分类号： B41J11/00 ,  B41J29/13

CPC分类号： B41J11/0022 ,  B41J29/13

摘要： A heating device includes a heater and a cover to cover the heater. In the heating device, the cover includes a first cover disposed in a first direction of the heater and a second cover disposed in the first direction, and the second cover is adjacent to the first cover. In the heating device, the first cover and the second cover have a gap in between, and the gap has a length greater than an amount of thermal deformation of either one of the first cover or the second cover or a total amount of thermal deformation of the first cover and the second cover.

公开(公告)号：US20210181661A1

公开(公告)日：2021-06-17

申请号：US17106583

申请日：2020-11-30

申请人： Takayuki SEKI

发明人： Takayuki SEKI

IPC分类号： G03G15/20

摘要： A heating device includes an endless belt, an opposed rotator, a heater, and a heat transfer portion. The opposed rotator is configured to contact the endless belt to form a nip between the endless belt and the opposed rotator. The heater includes a plurality of resistive heat generators configured to heat the endless belt. The heater is configured to generate a larger amount of heat on a first side of the heater than a second side of the heater in a longitudinal direction of the heater. The first side is opposite to the second side with respect to a center position of a heating span of all the plurality of energized resistive heat generators in the longitudinal direction of the heater. The heat transfer portion is disposed on the first side to release heat from the heating span.

公开(公告)号：US20200174408A1

公开(公告)日：2020-06-04

申请号：US16655392

申请日：2019-10-17

申请人： Yuusuke FURUICHI ,  Takayuki SEKI ,  Tomoya ADACHI

发明人： Yuusuke FURUICHI ,  Takayuki SEKI ,  Tomoya ADACHI

IPC分类号： G03G15/20

摘要： A heating device includes an endless belt that rotates and a pressure rotator that rotates in a rotation direction. The pressure rotator contacts an outer circumferential surface of the endless belt to form a nip therebetween, through which a heating target having a particular width in an axial direction of the pressure rotator is conveyed. A heater includes a heat generator that defines a conveyance span in the axial direction of the pressure rotator, where the heating target is conveyed, and a non-conveyance span in the axial direction of the pressure rotator, where the heating target is not conveyed. A non-conveyance span temperature detector is disposed opposite the pressure rotator in the non-conveyance span of the heat generator. The non-conveyance span temperature detector detects a temperature of the pressure rotator.

公开(公告)号：US20170185015A1

公开(公告)日：2017-06-29

申请号：US15377278

申请日：2016-12-13

申请人： Hiroshi YOSHINAGA ,  Kenji ISHll ,  Kazuhito KISHI ,  Takashi SETO ,  Takayuki SEKI ,  lppei FUJIMOTO ,  Misaki SHIMIZU ,  Kazunari SAWADA

发明人： Hiroshi YOSHINAGA ,  Kenji ISHll ,  Kazuhito KISHI ,  Takashi SETO ,  Takayuki SEKI ,  lppei FUJIMOTO ,  Misaki SHIMIZU ,  Kazunari SAWADA

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/2042 ,  G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes an endless belt being applied with a lubricant on an inner circumferential surface of the endless belt. A pressure rotator presses against a nip formation pad via the endless belt to form a fixing nip between the endless belt and the pressure rotator. A radiant heater heats the endless belt. At least one contact heater heats at least one lateral end of the endless belt in an axial direction of the endless belt. At least one temperature detector detects a temperature of the endless belt. A controller controls the at least one contact heater to generate heat, controls the endless belt to rotate, and controls the radiant heater to generate heat sequentially based on the temperature of the endless belt that is detected by the at least one temperature detector.