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公开(公告)号：US20200249604A1
公开(公告)日：2020-08-06
申请号：US16736995
申请日：2020-01-08
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.
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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.
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公开(公告)号：US20240118648A1
公开(公告)日：2024-04-11
申请号：US18263152
申请日：2022-04-25
申请人： Tomoya ADACHI , Yuusuke FURUICHI
发明人： Tomoya ADACHI , Yuusuke FURUICHI
IPC分类号： G03G15/20
CPC分类号： G03G15/2017 , G03G15/2053 , G03G15/2064
摘要： A heating device includes a planar heater, a heating rotator, a pressure rotator, and one or more charge eliminators. The planar heater includes a base and a resistive heat generator. The heating rotator contacts the heater and includes a conductive layer. The pressure rotator presses the heating rotator and has an outer surface including a conductive material. The one or more charge eliminators contact the conductive layer and the outer surface of the pressure rotator.
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公开(公告)号：US20220091558A1
公开(公告)日：2022-03-24
申请号：US17480154
申请日：2021-09-21
申请人： Kei SAITO , Tomoya ADACHI , Yuusuke FURUICHI
发明人： Kei SAITO , Tomoya ADACHI , Yuusuke FURUICHI
IPC分类号： G03G21/20
摘要： An image forming apparatus includes a heating device including a heater, a developing device, and an airflow generation device. The heater includes a base, a heat generator, an electrode portion, and conductive portions. The conductive portions are disposed on one side and another side in a longitudinal direction in a heat generation region and spaced apart in a lateral direction intersecting the longitudinal direction. A maximum total value among total values of squares of current flowing in the conductive portions at longitudinal positions on the one side is larger than that on said another side. The developing device includes a rotating member and sliding portions. A sliding portion having highest temperature in operation is disposed on one side of the developing device being same as the one side of the heater in the longitudinal direction. The airflow generation device generates an airflow toward the one side of the developing device.
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公开(公告)号：US20200249602A1
公开(公告)日：2020-08-06
申请号：US16715348
申请日：2019-12-16
申请人： Daisuke Inoue , Tomoya ADACHI , Yuusuke FURUICHI
发明人： Daisuke Inoue , Tomoya ADACHI , Yuusuke FURUICHI
摘要： A fixing device includes an endless belt that rotates and a pressure rotator that rotates and presses against the endless belt to form a fixing nip between the endless belt and the pressure rotator, through which a recording medium bearing an image is conveyed. A heater is disposed inside a loop formed by the endless belt. The heater heats the endless belt. A conductor is disposed upstream from the pressure rotator in a recording medium conveyance direction and grounded. The conductor contacts and detects the recording medium.
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公开(公告)号：US20190278206A1
公开(公告)日：2019-09-12
申请号：US16269616
申请日：2019-02-07
摘要： A heater includes a plurality of resistive heat generators electrically connected to each other in parallel. A power supply supplies power to the resistive heat generators. An electric current detector detects an electric current that flows through the resistive heat generators. A voltage detector detects a voltage applied to the resistive heat generators. An electric current controller controls the electric current that flows through the resistive heat generators based on the electric current detected by the electric current detector and the voltage detected by the voltage detector. The electric current detector detects the electric current in a state in which, after the power supply starts supplying the power to the resistive heat generators, an identical waveform of an alternating current supplied to the resistive heat generators continues for a predetermined time period or longer taken for the electric current detector to detect the electric current.
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公开(公告)号：US20210364958A1
公开(公告)日：2021-11-25
申请号：US17241233
申请日：2021-04-27
摘要： A heating device includes a heater and a feeding member. The heater includes a base and an electrode mounted on an electrode mounting face of the base. The feeding member includes a connector terminal and a restrictor. The connector terminal contacts the electrode. The restrictor engages the heater and restricts displacement of the feeding member relative to the heater.
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公开(公告)号：US20200033771A1
公开(公告)日：2020-01-30
申请号：US16502348
申请日：2019-07-03
IPC分类号： G03G15/20
摘要： A heating device includes a heater and a holder. The heater includes a plate, an electrode disposed on one surface of the plate, and a heat generator. The heater does not include another electrode on the other surface of the plate opposite the one surface on which the electrode is disposed, and in a portion on the plate corresponding to the electrode. The holder includes a contact portion to contact the plate in a thickness direction of the plate, and at least one of a plurality of portions, a gap at a location corresponding to the electrode, existing between the plurality of portions and a single portion, at least a part of the single portion corresponding to the electrode, being relatively thinner than a part of the single portion corresponding to the heat generator.
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公开(公告)号：US20230297016A1
公开(公告)日：2023-09-21
申请号：US18184190
申请日：2023-03-15
IPC分类号： G03G15/20
CPC分类号： G03G15/2057 , G03G15/2064 , G03G2215/2038
摘要： A nip forming device includes an endless belt that is flexible and rotates. A nip formation pad is disposed opposite an inner circumferential face of the endless belt. A pressure rotator rotates and presses against the nip formation pad via the endless belt to form a nip between the endless belt and the pressure rotator, through which a conveyed object is conveyed. A housing supports the pressure rotator. A separator is disposed downstream from the nip in a conveyance direction in which the conveyed object is conveyed. The separator separates the conveyed object from the endless belt. The separator moves toward and away from the endless belt. A restrictor restricts motion of the separator that moves toward the endless belt. The restrictor is mounted on the housing.
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公开(公告)号：US20220283531A1
公开(公告)日：2022-09-08
申请号：US17571836
申请日：2022-01-10
申请人： Naohiro KUMAGAI , Tomoya ADACHI , Yuusuke FURUICHI
发明人： Naohiro KUMAGAI , Tomoya ADACHI , Yuusuke FURUICHI
IPC分类号： G03G15/20
摘要： An image forming apparatus includes a heating device, a rotator, and a blade. The heating device includes a heater extending in a direction orthogonal to a conveyance direction of a recording medium. The heater includes a heat generator and generates a larger heat amount at one end than at a center. The blade includes a rubbing portion extending in the direction. Both ends of the rubbing portion face both ends of the heater. The rotator and the blade are configured such that a friction force between the rotator and one end of the rubbing portion is smaller than a friction force between the rotator and the center of the rubbing portion in the direction.
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