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公开(公告)号：US20240176268A1
公开(公告)日：2024-05-30
申请号：US18510632
申请日：2023-11-15
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2064 , G03G2215/2029
摘要： A fixing device includes a fixing member, a pressing member, a heat source, and a reflecting member. The pressing member presses and contacts an outer circumferential surface of the fixing member. The heat source is disposed inside a loop of the fixing member. The reflecting member includes a reflecting portion, a pressure receiving portion, and an extending portion. The reflecting portion reflects heat toward an inner circumferential surface of the fixing member. The pressure receiving portion receives a pressing force of the pressing member via the fixing member. The extending portion extends from an area upstream to an area downstream from the nip portion in a direction of rotation of the fixing member and facing the inner circumferential surface of the fixing member. The reflecting member is in non-contact with one or more of members disposed inside the loop of the fixing member, at least when the fixing member rotates.
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公开(公告)号：US20240361712A1
公开(公告)日：2024-10-31
申请号：US18638723
申请日：2024-04-18
IPC分类号： G03G15/20
CPC分类号： G03G15/2028 , G03G15/2025 , G03G15/2064
摘要： A fixing device includes a fixing rotator, a heater, a pressure rotator, a nip formation pad, and a slide aid sheet. The fixing rotator is rotatable in a rotation direction. The heater heats the fixing rotator. The pressure rotator contacts an outer circumferential face of the fixing rotator. The nip formation pad is inside a loop of the fixing rotator to form a nip between the fixing rotator and the pressure rotator. The slide aid sheet is on the nip formation pad and faces the fixing rotator. The slide aid sheet includes a carbon fiber extending in a width direction orthogonal to a rotation direction of the fixing rotator.
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公开(公告)号：US20240176265A1
公开(公告)日：2024-05-30
申请号：US18523956
申请日：2023-11-30
IPC分类号： G03G15/20
CPC分类号： G03G15/2007 , G03G15/2064
摘要： A fixing device includes a fixing rotator, a pressure rotator, a fixing nip support, a heat source, and a reflector. The pressure rotator contacts an outer face of the fixing rotator to form a nip through which a recording medium conveyed in a conveyance direction passes. The fixing nip support has a receiving portion to receive a pressing force of the pressure rotator. The heat source inside a loop of the fixing rotator has a heat generation area having a first length in a width direction orthogonal to the conveyance direction. The reflector includes a contacting portion contacting the receiving portion of the fixing nip support and a reflecting portion facing the heat source to reflect radiant heat radiated by the heat source toward an inner face of the fixing rotator. The reflecting portion has a second length in the width direction longer than the first length.
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公开(公告)号：US20240361715A1
公开(公告)日：2024-10-31
申请号：US18645389
申请日：2024-04-25
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2064 , G03G2215/2035
摘要： A heating device includes a first rotator, a second rotator, a heater, a nip formation pad, a reflector, and a shield. The second rotator faces the first rotator. The heater heats the first rotator. The nip formation pad is inside a loop of the first rotator to form a nip between the first rotator and the second rotator. The nip formation pad has a nip side face facing an inner circumferential surface of the first rotator. The reflector reflects radiant heat radiated from the heater toward the inner circumferential surface of the first rotator. The reflector contacts the nip side face of the nip formation pad. The shield contacts the reflector and shields the first rotator from the radiant heat radiated from the heater.
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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.
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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.
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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.
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公开(公告)号：US20230093465A1
公开(公告)日：2023-03-23
申请号：US17900880
申请日：2022-09-01
申请人： Toshiyuki KABATA , Yoshiki YAMAGUCHI , Takashi SETO , Hiroshi YOSHINAGA , Kentaro YAMASHITA , Daisuke INOUE
发明人： Toshiyuki KABATA , Yoshiki YAMAGUCHI , Takashi SETO , Hiroshi YOSHINAGA , Kentaro YAMASHITA , Daisuke INOUE
IPC分类号： G03G15/20
摘要： A nip former that forms a nip between an endless belt and a pressure rotator includes a base that is made of aluminum and has a nip forming face disposed opposite the nip. An anodic oxidation coating is treated with sealing and coats at least the nip forming face. The anodic oxidation coating has a thickness that is not smaller than 22 μm and is not greater than 45 μm and a variation in thickness that is not greater than 20 percent. The base and the anodic oxidation coating define a nip forming portion that is disposed opposite the nip. The nip forming portion has a thickness that is not smaller than 0.40 mm and is not greater than 1.20 mm.
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公开(公告)号：US20220291613A1
公开(公告)日：2022-09-15
申请号：US17580703
申请日：2022-01-21
IPC分类号： G03G15/20
摘要： A nip formation pad includes a base, a high thermal conduction member, and an attachment. The high thermal conduction member has a thermal conductivity greater than a thermal conductivity of the base. The attachment is attached to the high thermal conduction member by elastic deformation of the attachment on the base held between the high thermal conduction member and the attachment.
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公开(公告)号：US20210191301A1
公开(公告)日：2021-06-24
申请号：US17110485
申请日：2020-12-03
IPC分类号： G03G15/20
摘要： A fixing device includes an endless belt that rotates and is heated by a heat source. A thermal conduction aid includes a contact portion, an upstream bent portion, and a downstream bent portion. The contact portion contacts the endless belt. The upstream bent portion and the downstream bent portion are disposed upstream and downstream from the contact portion in a rotation direction of the endless belt, respectively, and are extended in a longitudinal direction of the thermal conduction aid. A recess is disposed in at least one of the upstream bent portion and the downstream bent portion. The recess spans a center of the thermal conduction aid in the longitudinal direction thereof and is recessed from an edge of the at least one of the upstream bent portion and the downstream bent portion in a short direction thereof.
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