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公开(公告)号：US12092978B2
公开(公告)日：2024-09-17
申请号：US18329201
申请日：2023-06-05
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2028
摘要： A fixing device includes a first rotator, a second rotator, a heater, a nip formation pad, and a separator. The second rotator contacts an outer circumferential surface of the first rotator to form a nip between the first rotator and the second rotator. The heater includes a resistive heat generator to heat the first rotator. The nip formation pad contacts an inner circumferential surface of the first rotator to form the nip. The separator separates a recording medium passing through the nip from the first rotator. The separator includes a separating surface and a contact. The separating surface is separated from the outer circumferential surface of the first rotator and separates the recording medium from the first rotator. The contact contacts the outer circumferential surface of the first rotator at a position where the first rotator is pinchable between the contact and the nip formation pad.
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公开(公告)号：US11947296B2
公开(公告)日：2024-04-02
申请号：US18151091
申请日：2023-01-06
CPC分类号： G03G15/2064 , G03G15/2053 , G03G15/5004 , G03G2215/2025
摘要： A nip forming device includes an endless film and a pressure rotator that presses against a heater via the endless film. A driver drives and rotates the pressure rotator to cause the pressure rotator to drive and rotate the endless film. A controller controls the driver to drive and rotate the pressure rotator, based on a temperature of the pressure rotator, that is detected by a detector, in a forward direction to convey a conveyed object and to interrupt forward rotation of the pressure rotator. In response to a determination that the temperature of the pressure rotator is higher than a predetermined temperature when a job of the nip forming device is finished, the controller controls the driver to drive and rotate the pressure rotator for a predetermined time in a backward direction opposite to the forward direction and to interrupt backward rotation of the pressure rotator.
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公开(公告)号：US20230408959A1
公开(公告)日：2023-12-21
申请号：US18329201
申请日：2023-06-05
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2028
摘要： A fixing device includes a first rotator, a second rotator, a heater, a nip formation pad, and a separator. The second rotator contacts an outer circumferential surface of the first rotator to form a nip between the first rotator and the second rotator. The heater includes a resistive heat generator to heat the first rotator. The nip formation pad contacts an inner circumferential surface of the first rotator to form the nip. The separator separates a recording medium passing through the nip from the first rotator. The separator includes a separating surface and a contact. The separating surface is separated from the outer circumferential surface of the first rotator and separates the recording medium from the first rotator. The contact contacts the outer circumferential surface of the first rotator at a position where the first rotator is pinchable between the contact and the nip formation pad.
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公开(公告)号：US20230288855A1
公开(公告)日：2023-09-14
申请号：US18151091
申请日：2023-01-06
CPC分类号： G03G15/2064 , G03G15/2053 , G03G15/5004 , G03G2215/2025
摘要： A nip forming device includes an endless film and a pressure rotator that presses against a heater via the endless film. A driver drives and rotates the pressure rotator to cause the pressure rotator to drive and rotate the endless film. A controller controls the driver to drive and rotate the pressure rotator, based on a temperature of the pressure rotator, that is detected by a detector, in a forward direction to convey a conveyed object and to interrupt forward rotation of the pressure rotator. In response to a determination that the temperature of the pressure rotator is higher than a predetermined temperature when a job of the nip forming device is finished, the controller controls the driver to drive and rotate the pressure rotator for a predetermined time in a backward direction opposite to the forward direction and to interrupt backward rotation of the pressure rotator.
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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：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：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：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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公开(公告)号：US20200033767A1
公开(公告)日：2020-01-30
申请号：US16451512
申请日：2019-06-25
申请人： Tomoya ADACHI , Yuusuke Furuichi , Yukimichi Someya , Masahiro Samei , Takamasa Hase , Daisuke Inoue
发明人： Tomoya ADACHI , Yuusuke Furuichi , Yukimichi Someya , Masahiro Samei , Takamasa Hase , Daisuke Inoue
IPC分类号： G03G15/20
摘要： An image forming apparatus includes a resistive heat generator, a temperature detector, and a power controller that detects a temperature-resistance property of the resistive heat generator before the resistive heat generator is used when the resistive heat generator is removably installed. The power controller obtains power supplied to the resistive heat generator and a change in a temperature of the resistive heat generator, that is detected by the temperature detector, while the power controller supplies the power at a predetermined power duty cycle for adjustment 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 in use of the resistive heat generator, based on the temperature-resistance property.
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