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公开(公告)号：US10809652B2
公开(公告)日：2020-10-20
申请号：US16520409
申请日：2019-07-24
摘要： A fixing device includes a first rotator, a second rotator disposed opposite the first rotator to form a nip with the first rotator, a heater including a base and a heat generator, and a non-contact temperature detector to detect a temperature of the heater. The heater contacts an inner circumferential surface of the first rotator. The non-contact temperature detector is disposed opposite the inner circumferential surface of the first rotator via the base and disposed at a predetermined distance from the heater.
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公开(公告)号：US11054772B2
公开(公告)日：2021-07-06
申请号：US16535350
申请日：2019-08-08
摘要： A heater for being attached to a heating device includes a base layer, a heat generator mounted on the base layer, an electrode mounted on the base layer, and a feeder mounted on the base layer. The feeder is interposed between the electrode and the heat generator. The feeder is configured to electrically connect the electrode to the heat generator. A positioner is configured to engage a counterpart of the heating device. The positioner is configured to position the heater in a longitudinal direction of the heater when the heater is attached to the heating device.
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公开(公告)号：US10969717B2
公开(公告)日：2021-04-06
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：US20200033766A1
公开(公告)日：2020-01-30
申请号：US16391959
申请日：2019-04-23
申请人： Takamasa Hase , Tomoya Adachi , Yuusuke Furuichi , Yukimichi Someya , Masahiro Samei , Daisuke Inoue
发明人： Takamasa Hase , Tomoya Adachi , Yuusuke Furuichi , Yukimichi Someya , Masahiro Samei , Daisuke Inoue
IPC分类号： G03G15/20
摘要： An image forming apparatus includes a power controller that starts an examination mode by an external operation. The examination mode detects a temperature-resistance property of a resistive heat generator. The power controller supplies power at a predetermined power duty cycle to the resistive heat generator, The power controller obtains the power supplied to the resistive heat generator and a change in a temperature of the resistive heat generator, that is detected by a temperature detector, while the power controller supplies the power at the predetermined power duty cycle to the resistive heat generator. The power controller calculates the temperature-resistance property of the resistive heat generator based on the power and the change in the temperature that are obtained. The power controller adjusts a power duty cycle at which the power is supplied to the resistive heat generator based on the temperature-resistance property.
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公开(公告)号：US11237503B2
公开(公告)日：2022-02-01
申请号：US16502473
申请日：2019-07-03
摘要： A heater includes an electrode, a heat generator, and a plurality of layers including a first layer and at least one additional layer disposed in an opposite side with respect to a surface on which the electrode is disposed. The at least one additional layer includes 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：US10712695B2
公开(公告)日：2020-07-14
申请号：US16519254
申请日：2019-07-23
申请人： Daisuke Inoue , Tomoya Adachi , Yuusuke Furuichi , Yukimichi Someya , Masahiro Samei , Takamasa Hase
发明人： Daisuke Inoue , Tomoya Adachi , Yuusuke Furuichi , Yukimichi Someya , Masahiro Samei , Takamasa Hase
摘要： An image forming apparatus includes a heating device including a heat generator and a resistance value identifier, a body, a resistance value acquisition unit, a detector to detect detachment and attachment of the heating device from and to the body, and an electric power controller. The resistance value identifier corresponds to a resistance value of the heat generator. The resistance value acquisition unit acquires the resistance value from the resistance value identifier. The electric power controller causes the resistance value acquisition unit to acquire the resistance value when the detector detects detachment and attachment of the heating device. The electric power controller changes a lighting duty of the heat generator when the acquired resistance value of the heat generator is different from the resistance value before the detector detects detachment and attachment of the heating device.
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公开(公告)号：US10678172B2
公开(公告)日：2020-06-09
申请号：US16276807
申请日：2019-02-15
IPC分类号： G03G15/20
摘要： A heating device includes a belt that rotates in a rotation direction and has a temperature decrease span in an axial direction of the belt, where the belt is susceptible to temperature decrease. A resistive heat generator is disposed opposite the belt. The resistive heat generator heats the belt and extends in the axial direction of the belt. The resistive heat generator includes a primary heat generating portion that generates heat in a first heat generation amount and a secondary heat generating portion that is disposed outside the primary heat generating portion and disposed opposite the temperature decrease span of the belt. The secondary heat generating portion generates heat in a second heat generation amount that is greater than the first heat generation amount of the primary heat generating portion.
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公开(公告)号：US10678171B2
公开(公告)日：2020-06-09
申请号：US16263634
申请日：2019-01-31
摘要： A fixing device includes a heater including a heat generator that is divided into a plurality of heat generating portions in an axial direction of the endless belt. The heat generator defines a dividing region between adjacent ones of the plurality of heat generating portions and a non-dividing region other than the dividing region. A primary guide contacts and guides the endless belt. The primary guide is disposed opposite the dividing region of the heat generator and has a first thermal capacity. A secondary guide contacts and guides the endless belt. The secondary guide is disposed opposite the non-dividing region of the heat generator and has a second thermal capacity that is greater than the first thermal capacity.
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公开(公告)号：US10539912B1
公开(公告)日：2020-01-21
申请号：US16391959
申请日：2019-04-23
申请人： Takamasa Hase , Tomoya Adachi , Yuusuke Furuichi , Yukimichi Someya , Masahiro Samei , Daisuke Inoue
发明人： Takamasa Hase , Tomoya Adachi , Yuusuke Furuichi , Yukimichi Someya , Masahiro Samei , Daisuke Inoue
摘要： An image forming apparatus includes a power controller that starts an examination mode by an external operation. The examination mode detects a temperature-resistance property of a resistive heat generator. The power controller supplies power at a predetermined power duty cycle to the resistive heat generator. The power controller obtains the power supplied to the resistive heat generator and a change in a temperature of the resistive heat generator, that is detected by a temperature detector, while the power controller supplies the power at the predetermined power duty cycle to the resistive heat generator. The power controller calculates the temperature-resistance property of the resistive heat generator based on the power and the change in the temperature that are obtained. The power controller adjusts a power duty cycle at which the power is supplied to the resistive heat generator based on the temperature-resistance property.
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公开(公告)号：US11500315B2
公开(公告)日：2022-11-15
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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