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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：US20160274516A1
公开(公告)日：2016-09-22
申请号：US15070735
申请日：2016-03-15
申请人： Yoshiki YAMAGUCHI , Yoshio HATTORI , Haruyuki HONDA , Ryuuichi MIMBU , Toshihiko SHIMOKAWA , Yutaka IKEBUCHI , Yasunori ISHIGAYA , Kazuya SAITO , Keitaro SHOJI , Ryohei MATSUDA
发明人： Yoshiki YAMAGUCHI , Yoshio HATTORI , Haruyuki HONDA , Ryuuichi MIMBU , Toshihiko SHIMOKAWA , Yutaka IKEBUCHI , Yasunori ISHIGAYA , Kazuya SAITO , Keitaro SHOJI , Ryohei MATSUDA
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2028 , G03G15/6573 , G03G2215/00421 , G03G2215/2035
摘要： A fixing device includes an endless fixing belt; a pressure roller to contact the fixing belt; a nip forming member to press the pressure roller from the fixing belt; a nip portion formed between the fixing belt and the pressure roller; a heater to heat the fixing belt to fuse and fix toner onto a recording sheet in the nip portion; an auxiliary driven roller; an auxiliary drive roller to drive the driven roller; an auxiliary nip portion, formed between an outer circumferential surface of the auxiliary driven roller and an outer circumferential surface of the auxiliary drive roller, to nip the recording sheet after toner fixation conveyed from the nip portion; and an outlet guide member, disposed downstream of the auxiliary nip portion, to guide the recording sheet after toner fixation conveyed from the auxiliary nip portion, with the toner-fixed recording sheet surface bent in a concave shape.
摘要翻译： 定影装置包括环形定影带; 与所述定影带接触的压力辊; 夹持形成构件，用于从定影带按压压力辊; 形成在所述定影带和所述加压辊之间的辊隙部; 加热器，用于加热定影带以将调色剂熔合并固定到辊隙部分中的记录片材上; 辅助从动辊; 用于驱动从动辊的辅助驱动辊; 形成在辅助从动辊的外周表面和辅助驱动辊的外圆周表面之间的辅助夹持部分，用于在从夹持部分输送的调色剂定影之后夹持记录纸; 以及布置在辅助夹持部分下游的出口引导件，用于在调色剂定影从辅助夹持部分输送之后引导记录纸，调色剂固定的记录纸张表面弯曲成凹形。
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公开(公告)号：US20180335733A1
公开(公告)日：2018-11-22
申请号：US15980123
申请日：2018-05-15
申请人： Ryohei MATSUDA , Ippei FUJIMOTO , Kenji ISHII , Hiroshi YOSHINAGA , Takayuki SEKI , Kazunari SAWADA
发明人： Ryohei MATSUDA , Ippei FUJIMOTO , Kenji ISHII , Hiroshi YOSHINAGA , Takayuki SEKI , Kazunari SAWADA
IPC分类号： G03G15/20
CPC分类号： G03G15/2017 , G03G15/2053 , G03G15/2064 , G03G2215/2035
摘要： A fixing device includes an endless fixing belt, a heat source, an opposed member, a nip formation pad, and a heat conductive member. The nip formation pad includes an abutment region, a first opening portion, and second opening portions. The abutment region includes a plurality of abutment surfaces abutting a first face of the heat conductive member. The first opening portion is disposed at a center of the abutment region to form a non-contact area at which the nip formation pad does not contact the heat conductive member. The abutment region includes an upstream abutment area and a downstream abutment area from the first opening portion in a direction of conveyance of a recording medium. The second opening portions divide at least one area of the upstream abutment area and the downstream abutment area into a plurality of portions in a longitudinal direction of the nip formation pad.
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公开(公告)号：US20230280682A1
公开(公告)日：2023-09-07
申请号：US18157388
申请日：2023-01-20
申请人： Ryohei MATSUDA , Kentaro YAMASHITA
发明人： Ryohei MATSUDA , Kentaro YAMASHITA
IPC分类号： G03G15/20
CPC分类号： G03G15/2039
摘要： A fixing device includes a fixing rotator, a first heater, a second heater, and circuitry. The first heater heats a region on the fixing rotator to heat a recording medium having a width smaller than a predetermined width. The second heater heats a region on the fixing rotator to heat a maximum recording medium used in the fixing device. The second heater has a heat generation distribution in which a heat generation amount of each of both end portions corresponding to both end portions of the maximum recording medium in a width direction of the recording medium is larger than a heat generation amount of a center portion. The circuitry determines whether to turn on the first heater and turn off the second heater or to turn on both the first heater and the second heater based on a required power to bring the fixing rotator to a fixing temperature.
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公开(公告)号：US20170205742A1
公开(公告)日：2017-07-20
申请号：US15395410
申请日：2016-12-30
申请人： Keitaro SHOJI , Yasunori ISHIGAYA , Kazuya SAITO , Ryohei MATSUDA , Hiromasa TAKAGI , Ryuuichi MIMBU , Toshihiko SHIMOKAWA
发明人： Keitaro SHOJI , Yasunori ISHIGAYA , Kazuya SAITO , Ryohei MATSUDA , Hiromasa TAKAGI , Ryuuichi MIMBU , Toshihiko SHIMOKAWA
IPC分类号： G03G15/20
CPC分类号： G03G15/2039 , G03G15/2053
摘要： A fixing device includes an endless fixing belt that is multilayered, an opposing rotator disposed opposite the fixing belt and pressed to the fixing belt to form a nip, a heater disposed inside the fixing belt, and a safety device including a contactless temperature sensor disposed outside the fixing belt and apart from an outer face of the fixing. The fixing belt is to rotate and thermally expand. The contactless temperature sensor detects a temperature of the fixing belt. The safety device stops heating by the heater when the temperature detected by the contactless temperature sensor is at or higher than a predetermined temperature. As the outer face of the fixing belt shifts outward in the radial direction due to thermal, a proportion of the outer face of the fixing belt in a viewing angle of the contactless temperature sensor increases.
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