-
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.
-
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.
-
公开(公告)号：US20230305457A1
公开(公告)日：2023-09-28
申请号：US18171558
申请日：2023-02-20
IPC分类号： G03G15/20
CPC分类号： G03G15/2028
摘要： A fixing device includes a fixing belt heated by a heater. A pressure roller presses against the fixing belt to form a nip therebetween, through which a recording medium is conveyed. A holding portion is disposed opposite an inner circumferential face of the fixing belt at each lateral end of the fixing belt in a longitudinal direction thereof. The holding portion rotatably holds the fixing belt. A separator separates the recording medium from the fixing belt. The separator includes a contact portion that contacts the fixing belt and is disposed outboard from a recording medium conveyance region in the longitudinal direction of the fixing belt. The recording medium is conveyed over the fixing belt in the recording medium conveyance region. The contact portion is disposed opposite the holding portion via the fixing belt. The separator further includes a biasing member that presses the contact portion toward the fixing belt.
-
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.
-
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.
-
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.
-
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.
-
公开(公告)号：US20200379384A1
公开(公告)日：2020-12-03
申请号：US16829083
申请日：2020-03-25
IPC分类号： G03G15/20
摘要： A heating device includes a sleeve-shaped flexible fixing rotator, a heater to contact an inner surface of the fixing rotator, a pressure rotator pressed against the heater via the fixing rotator to form a nip between the fixing rotator and the pressure rotator, a thermometer to detect a temperature of the heater, and a pressing force switching mechanism to switch a pressing force between the heater and the pressure rotator. The pressing force switching mechanism switches the pressing force between the heater and the pressure rotator in at least two stages, a standard force when the temperature of the heater detected by the thermometer increases and reaches a predetermined temperature and before the medium to be heated passes through the nip, and a reduced force smaller than the standard force when the temperature of the heater detected by the thermometer is lower than the predetermined temperature.
-
公开(公告)号：US20190286028A1
公开(公告)日：2019-09-19
申请号：US16285733
申请日：2019-02-26
IPC分类号： G03G15/20
摘要： A heating device includes a heater that heats an object to be heated. A holder supports the heater and includes an engaged portion. The heater includes a contact face that contacts the object to be heated. The heater further includes a separation restrictor that engages the engaged portion of the holder to restrict motion of the heater in a separating direction in which the heater separates from the holder. The separating direction is perpendicular to the contact face.
-
公开(公告)号：US20190196374A1
公开(公告)日：2019-06-27
申请号：US16232246
申请日：2018-12-26
IPC分类号： G03G15/20
摘要： A heating device includes a base, resistance heating elements, a power control circuit, a first temperature detector, a second temperature detector, a power interrupter, and control circuitry. The resistance heating elements are arranged in a longitudinal direction of the base and electrically connected in parallel. The first detector detects a temperature of a first resistance heating element. The second detector detects a temperature of a second resistance heating element. The power interrupter interrupts power supplied to the resistance heating elements when the temperature of the second resistance heating element becomes a predetermined temperature or more. The control circuitry controls the circuit such that a temperature of each resistance heating element becomes a predetermined temperature, based on a result of detection of the first detector, and interrupts the power supplied to the resistance heating elements when the second detector detects predetermined temperature information regarding the second resistance heating element.
-
-
-
-
-
-
-
-
-
搜索结果
27 条记录 (耗时 0.022 秒)
