公开(公告)号：US09933730B2

公开(公告)日：2018-04-03

申请号：US15377234

申请日：2016-12-13

申请人： Hiroshi Yoshinaga ,  Kenji Ishii ,  Kazuhito Kishi ,  Takashi Seto ,  Takayuki Seki ,  Ippei Fujimoto ,  Kazunari Sawada

发明人： Hiroshi Yoshinaga ,  Kenji Ishii ,  Kazuhito Kishi ,  Takashi Seto ,  Takayuki Seki ,  Ippei Fujimoto ,  Kazunari Sawada

IPC分类号： G03G15/20

CPC分类号： G03G15/2007 ,  G03G15/2042 ,  G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes an endless belt, a first radiant heater including a first heat generator to heat the endless belt, and a second radiant heater including a second heat generator, disposed outboard from the first heat generator in an axial direction of the endless belt, to heat the endless belt. A nip formation pad includes a nip-side face disposed opposite the endless belt. A contact heater heats at least one lateral end of the endless belt in the axial direction of the endless belt. The contact heater includes a nip-side face disposed opposite the endless belt. A thermal conduction aid covers the nip-side face of the nip formation pad and the nip-side face of the contact heater and conducts heat applied to the endless belt in the axial direction of the endless belt.

公开(公告)号：US09618887B2

公开(公告)日：2017-04-11

申请号：US14992643

申请日：2016-01-11

申请人： Hiromasa Takagi ,  Kenji Ishii ,  Kazuhito Kishi ,  Takashi Seto ,  Takayuki Seki ,  Hiroshi Yoshinaga ,  Ippei Fujimoto ,  Kazunari Sawada

发明人： Hiromasa Takagi ,  Kenji Ishii ,  Kazuhito Kishi ,  Takashi Seto ,  Takayuki Seki ,  Hiroshi Yoshinaga ,  Ippei Fujimoto ,  Kazunari Sawada

IPC分类号： G03G15/20

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

摘要： A fixing device includes a flexible, tubular fixing rotator rotatable in a predetermined direction of rotation and an opposed rotator disposed opposite the fixing rotator. A nip formation pad presses against the opposed rotator via the fixing rotator to form a fixing nip between the fixing rotator and the opposed rotator, through which a recording medium bearing a toner image is conveyed. A fixing heater is disposed opposite at least a conveyance span of the fixing rotator in an axial direction thereof where the recording medium is conveyed to heat the fixing rotator. A lateral end heater is mounted on the nip formation pad and disposed opposite an inner circumferential surface of the fixing rotator at a lateral end of the fixing rotator in the axial direction thereof to heat the fixing rotator. A supplementary thermal conductor contacts the fixing rotator and the lateral end heater.

公开(公告)号：US20160334742A1

公开(公告)日：2016-11-17

申请号：US15144055

申请日：2016-05-02

申请人： Shohta KOBASHIGAWA ,  Kenji Ishii ,  Kazuhito Kishi ,  Takayuki Seki ,  Hiroshi Yoshinaga ,  Takashi Seto ,  Hiromasa Takagi ,  Ippei Fujimoto ,  Hiroshi Seo ,  Takamasa Hase ,  Kazunari Sawada ,  Yasuhiko Ogino

发明人： Shohta KOBASHIGAWA ,  Kenji Ishii ,  Kazuhito Kishi ,  Takayuki Seki ,  Hiroshi Yoshinaga ,  Takashi Seto ,  Hiromasa Takagi ,  Ippei Fujimoto ,  Hiroshi Seo ,  Takamasa Hase ,  Kazunari Sawada ,  Yasuhiko Ogino

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes a primary heater disposed opposite a fixing rotator to heat a circumferential span of the fixing rotator other than a fixing nip formed between the fixing rotator and a pressure rotator and a secondary heater disposed outboard from the primary heater in an axial direction of the fixing rotator to heat the fixing rotator at the fixing nip. The primary heater and the secondary heater heat a bi-heating span of the fixing rotator in the axial direction thereof. The secondary heater heats a mono-heating span of the fixing rotator in the axial direction thereof and generates a decreased amount of heat to be conducted to the bi-heating span of the fixing rotator. The decreased amount of heat is smaller than an increased amount of heat to be conducted to the mono-heating span of the fixing rotator that is heated by the secondary heater only.

摘要翻译： 定影装置包括与固定旋转体相对设置的主加热器，用于加热固定旋转器的周向跨度，而不是在固定旋转体和压力旋转体之间形成的定影辊隙和从主加热器的外侧沿轴向方向设置的二次加热器 固定旋转器用于在定影辊隙处加热定影旋转器。 主加热器和二次加热器沿固定转子的轴向加热固定转子的双加热跨度。 二次加热器沿固定旋转器的轴向加热固定旋转器的单加热跨度，并且产生传导到定影旋转器的双加热跨度的减少的热量。 减少的热量小于仅由二次加热器加热的定影转子的单加热跨度的加热量。

公开(公告)号：US10571837B2

公开(公告)日：2020-02-25

申请号：US16239948

申请日：2019-01-04

申请人： Yoshiki Yamaguchi ,  Ippei Fujimoto ,  Hiroyuki Shimada ,  Takayuki Seki ,  Takashi Seto ,  Yoshiyuki Fukuda ,  Hiroshi Yoshinaga

发明人： Yoshiki Yamaguchi ,  Ippei 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：US10331062B2

公开(公告)日：2019-06-25

申请号：US15783199

申请日：2017-10-13

申请人： Hiroshi Yoshinaga ,  Kenji Ishii ,  Hiroyuki Shimada ,  Ippei Fujimoto ,  Takashi Seto ,  Takayuki Seki ,  Kazunari Sawada

发明人： Hiroshi Yoshinaga ,  Kenji Ishii ,  Hiroyuki Shimada ,  Ippei Fujimoto ,  Takashi Seto ,  Takayuki Seki ,  Kazunari Sawada

IPC分类号： G03G15/20 ,  G03G15/00

摘要： An image forming apparatus includes a fixing device that includes a heater to heat a fixing rotator, an opposed rotator to press against the fixing rotator to form a fixing nip therebetween, and at least one rotary body to convey a recording medium to the fixing nip. A controller rotates the fixing rotator in a forward direction to fix a toner image on the recording medium. The controller stops the heater and rotates the fixing rotator in a predetermined rotation direction when a failure occurs while the fixing device is activated. The controller determines that the predetermined rotation direction is the forward direction or a backward direction according to the at least one rotary body that sandwiches the recording medium, if the fixing nip and the at least one rotary body sandwich the recording medium simultaneously when the failure occurs while the fixing device is activated.

公开(公告)号：US10295939B2

公开(公告)日：2019-05-21

申请号：US15627693

申请日：2017-06-20

申请人： Hiroshi Yoshinaga ,  Kenji Ishii ,  Ippei Fujimoto ,  Takashi Seto ,  Takayuki Seki ,  Kazunari Sawada ,  Ryohei Matsuda

发明人： Hiroshi Yoshinaga ,  Kenji Ishii ,  Ippei Fujimoto ,  Takashi Seto ,  Takayuki Seki ,  Kazunari Sawada ,  Ryohei Matsuda

IPC分类号： G03G15/20

摘要： A fixing device includes an endless belt and a pressure rotator disposed opposite an outer circumferential surface of the endless belt. The pressure rotator has a first span in an axial direction of the endless belt. A nip formation pad, which is disposed opposite an inner circumferential surface of the endless belt, forms a fixing nip between the endless belt and the pressure rotator. The nip formation pad includes a belt-side face disposed opposite the endless belt. A radiant heater, which is disposed opposite the inner circumferential surface of the endless belt, heats the endless belt. A thermal conduction aid, which contacts the belt-side face of the nip formation pad, conducts heat in the axial direction of the endless belt. The thermal conduction aid has a second span within which the first span of the pressure rotator is provided at the fixing nip.

公开(公告)号：US10289037B2

公开(公告)日：2019-05-14

申请号：US15827085

申请日：2017-11-30

申请人： Takayuki Seki ,  Takashi Seto ,  Kenji Ishii ,  Hiroshi Yoshinaga ,  Ippei Fujimoto ,  Kazunari Sawada ,  Hiroyuki Shimada

发明人： Takayuki Seki ,  Takashi Seto ,  Kenji Ishii ,  Hiroshi Yoshinaga ,  Ippei Fujimoto ,  Kazunari Sawada ,  Hiroyuki Shimada

IPC分类号： G03G15/20 ,  G03G15/01 ,  G03G15/00

摘要： A fixing device includes a lateral end heater, disposed opposite a lateral end of an inner circumferential surface of a fixing rotator in an axial direction thereof, to heat the fixing rotator and a thermal conduction aid contacting the fixing rotator and the lateral end heater to conduct heat. The lateral end heater includes a power supply portion disposed outboard from a lateral end of the thermal conduction aid in a longitudinal direction thereof and disposed opposite the inner circumferential surface of the fixing rotator. The power supply portion includes an electrode. A cover covers the power supply portion and includes a cover face disposed opposite the inner circumferential surface of the fixing rotator. A height adjuster adjusts a height of the cover face of the cover and causes the cover face to define an identical plane with a fixing rotator side face of the thermal conduction aid.

公开(公告)号：US20180059587A1

公开(公告)日：2018-03-01

申请号：US15684298

申请日：2017-08-23

申请人： Kazunari Sawada ,  lppei Fujimoto ,  Kenji Ishii ,  Hiroyuki Shimada ,  Takashi Seto ,  Hiroshi Yoshinaga ,  Takayuki Seki

发明人： Kazunari Sawada ,  lppei Fujimoto ,  Kenji Ishii ,  Hiroyuki Shimada ,  Takashi Seto ,  Hiroshi Yoshinaga ,  Takayuki Seki

IPC分类号： G03G15/20

CPC分类号： G03G15/2007 ,  G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes a heat generator being disposed inside a loop formed by a rotator and including a heat generating portion to radiate radiant heat. A reflector is disposed inside the loop formed by the rotator and includes a reflection face to reflect the radiant heat radiated from the heat generator toward the rotator. A support supports the reflector. A holder holds each lateral end of the support in a longitudinal direction of the support, which is perpendicular to the rotation direction of the rotator. A fastener attaches the reflector to the support at an attachment position disposed at each lateral end of the reflector in a longitudinal direction of the reflector. The attachment position is disposed outboard from a lateral edge of the heat generating portion of the heat generator and disposed inboard from the holder in the longitudinal direction of the reflector.

公开(公告)号：US09851667B2

公开(公告)日：2017-12-26

申请号：US15378214

申请日：2016-12-14

申请人： Takayuki Seki ,  Kenji Ishii ,  Kazuhito Kishi ,  Takashi Seto ,  Hiroshi Yoshinaga ,  Ippei Fujimoto ,  Kazunari Sawada

发明人： Takayuki Seki ,  Kenji Ishii ,  Kazuhito Kishi ,  Takashi Seto ,  Hiroshi Yoshinaga ,  Ippei Fujimoto ,  Kazunari Sawada

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2007 ,  G03G2215/2035

摘要： A fixing device includes an endless belt, a nip formation pad disposed inside a loop formed by the endless belt, and a radiant heater to heat the endless belt. A contact heater is disposed at least at one lateral end of the nip formation pad in a longitudinal direction of the nip formation pad. The contact heater includes a heat generator to heat at least one lateral end of the endless belt in an axial direction of the endless belt. A thermal conduction aid, covering a nip-side face of the nip formation pad and a nip-side face of the contact heater, conducts heat applied to the endless belt in the axial direction of the endless belt. The thermal conduction aid includes a heater-side face being disposed opposite the contact heater and covering at least the heat generator of the contact heater.

公开(公告)号：US09851663B2

公开(公告)日：2017-12-26

申请号：US15144055

申请日：2016-05-02

申请人： Shohta Kobashigawa ,  Kenji Ishii ,  Kazuhito Kishi ,  Takayuki Seki ,  Hiroshi Yoshinaga ,  Takashi Seto ,  Hiromasa Takagi ,  Ippei Fujimoto ,  Hiroshi Seo ,  Takamasa Hase ,  Kazunari Sawada ,  Yasuhiko Ogino

发明人： Shohta Kobashigawa ,  Kenji Ishii ,  Kazuhito Kishi ,  Takayuki Seki ,  Hiroshi Yoshinaga ,  Takashi Seto ,  Hiromasa Takagi ,  Ippei Fujimoto ,  Hiroshi Seo ,  Takamasa Hase ,  Kazunari Sawada ,  Yasuhiko Ogino

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes a primary heater disposed opposite a fixing rotator to heat a circumferential span of the fixing rotator other than a fixing nip formed between the fixing rotator and a pressure rotator and a secondary heater disposed outboard from the primary heater in an axial direction of the fixing rotator to heat the fixing rotator at the fixing nip. The primary heater and the secondary heater heat a bi-heating span of the fixing rotator in the axial direction thereof. The secondary heater heats a mono-heating span of the fixing rotator in the axial direction thereof and generates a decreased amount of heat to be conducted to the bi-heating span of the fixing rotator. The decreased amount of heat is smaller than an increased amount of heat to be conducted to the mono-heating span of the fixing rotator that is heated by the secondary heater only.