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公开(公告)号：US11934126B2
公开(公告)日：2024-03-19
申请号：US17963195
申请日：2022-10-11
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G2215/2003
摘要： A heating device includes a first rotator, a heater including a base and a heat generator, and a second rotator contacting the first rotator. The heat generator adjacent to the base defines a heat generation area having one edge close to one edge of the base in a longitudinal direction of the base. A length between the one edge of the base and the one edge of the heat generation area is longer than a length between the other edge of the base and the other edge of the heat generation area. The second rotator has one edge close to the one edge of the heat generation area. A length between the one edge of the second rotator and the one edge of the heat generation area is shorter than a length between the other edge of the second rotator and the other edge of the heat generation area.
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公开(公告)号：US20230266699A1
公开(公告)日：2023-08-24
申请号：US18168302
申请日：2023-02-13
申请人： Keitaro Shoji , Yasunori Ishigaya , Daisuke Hirano
发明人： Keitaro Shoji , Yasunori Ishigaya , Daisuke Hirano
CPC分类号： G03G15/2039 , H05B1/0241
摘要： A conveyance device to convey a recording medium includes a heater, a first temperature detector, a second temperature detector, and a recording medium detector. The heater heats the recording medium. The first temperature detector and the second temperature detector detect a temperature of the heater. The recording medium detector detects the recording medium. The first temperature detector is disposed at a position farther from a center position of a heating region of the heater than the second temperature detector in a conveyance orthogonal direction. The conveyance orthogonal direction is along a surface of the recording medium and orthogonal to a direction in which the recording medium is conveyed. The recording medium detector is disposed on a side opposite to the first temperature detector with respect to the second temperature detector in the conveyance orthogonal direction.
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公开(公告)号：US12085877B2
公开(公告)日：2024-09-10
申请号：US18168302
申请日：2023-02-13
申请人： Keitaro Shoji , Yasunori Ishigaya , Daisuke Hirano
发明人： Keitaro Shoji , Yasunori Ishigaya , Daisuke Hirano
CPC分类号： G03G15/2039 , H05B1/0241
摘要： A conveyance device to convey a recording medium includes a heater, a first temperature detector, a second temperature detector, and a recording medium detector. The heater heats the recording medium. The first temperature detector and the second temperature detector detect a temperature of the heater. The recording medium detector detects the recording medium. The first temperature detector is disposed at a position farther from a center position of a heating region of the heater than the second temperature detector in a conveyance orthogonal direction. The conveyance orthogonal direction is along a surface of the recording medium and orthogonal to a direction in which the recording medium is conveyed. The recording medium detector is disposed on a side opposite to the first temperature detector with respect to the second temperature detector in the conveyance orthogonal direction.
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公开(公告)号：US20230229101A1
公开(公告)日：2023-07-20
申请号：US18061125
申请日：2022-12-02
申请人： Haruo Shida , Tsuyoshi Endoh , Daisuke Hirano
发明人： Haruo Shida , Tsuyoshi Endoh , Daisuke Hirano
CPC分类号： G03G15/2039 , G03G15/5004 , H05B1/0202 , H05B1/0241
摘要： A heater control device includes a triac connected in series between an alternating-current power supply and a heater, the triac including a first main electrode, a second main electrode, and a gate electrode; a phototriac coupler configured to transmit a heater trigger signal to the gate electrode of the triac; a first resistor and a second resistor each of which is connected in series to the phototriac coupler and configured to limit current in accordance with a phase control enable signal indicative of a period of phase control; and a resistor selection circuit configured to select one of the first resistor and the second resistor and connect the selected resistor to the second main electrode of the triac. The first resistor and the second resistor have different rated powers and different breakabilities from each other.
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公开(公告)号：US11906916B2
公开(公告)日：2024-02-20
申请号：US17739509
申请日：2022-05-09
申请人： Yuusuke Furuichi , Hiroshi Seo , Tomoya Adachi , Daisuke Hirano
发明人： Yuusuke Furuichi , Hiroshi Seo , Tomoya Adachi , Daisuke Hirano
IPC分类号： G03G15/20
CPC分类号： G03G15/2053
摘要： A heating device includes a planar heater, a rotator, a pressure rotator, a heating device frame, a resistor, and a discharger. The pressure rotator has a conductive outer surface and presses the rotator. The heating device frame holds the pressure rotator. The discharger is in contact with the conductive outer surface of the pressure rotator and grounded via the resistor and the heating device frame.
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公开(公告)号：US11687020B2
公开(公告)日：2023-06-27
申请号：US17501290
申请日：2021-10-14
IPC分类号： G03G15/20
CPC分类号： G03G15/2053
摘要： A heating device includes a heating rotator, a pressure rotator, a planar heater, and a holder. The pressure rotator is configured to press against the fixing rotator to form a nip through which the recording medium is conveyed. The planar heater includes a plurality of heat generators arranged side by side and at least one separation region between the plurality of heat generators. The holder holds the planar heater and contacts the planar heater in a pressure direction in which the pressure rotator presses the heating rotator. The holder includes at least one clearance structure configured to cause a contact area between the planar heater and a portion of the holder corresponding to the at least one separation region to be smaller than a contact area between the planar heater and a portion of the holder not corresponding to the at least one separation region.
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公开(公告)号：US11971674B2
公开(公告)日：2024-04-30
申请号：US17574578
申请日：2022-01-13
IPC分类号： G03G15/20
CPC分类号： G03G15/2057 , G03G15/2064 , G03G2215/2038
摘要： A heating device includes a rotator, a heater, a heater holder, and a first high thermal conduction member. The heater includes a base and a plurality of heat generators being arranged on the base and including neighboring heat generators. The heater has a gap area between the neighboring heat generators. The first high thermal conduction member has a higher thermal conductivity than the base and faces the gap area.
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公开(公告)号：US20220291615A1
公开(公告)日：2022-09-15
申请号：US17574578
申请日：2022-01-13
IPC分类号： G03G15/20
摘要： A heating device includes a rotator, a heater, a heater holder, and a first high thermal conduction member. The heater includes a base and a plurality of heat generators being arranged on the base and including neighboring heat generators. The heater has a gap area between the neighboring heat generators. The first high thermal conduction member has a higher thermal conductivity than the base and faces the gap area.
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公开(公告)号：US20220155712A1
公开(公告)日：2022-05-19
申请号：US17501290
申请日：2021-10-14
IPC分类号： G03G15/20
摘要： A heating device includes a heating rotator, a pressure rotator, a planar heater, and a holder. The pressure rotator is configured to press against the fixing rotator to form a nip through which the recording medium is conveyed. The planar heater includes a plurality of heat generators arranged side by side and at least one separation region between the plurality of heat generators. The holder holds the planar heater and contacts the planar heater in a pressure direction in which the pressure rotator presses the heating rotator. The holder includes at least one clearance structure configured to cause a contact area between the planar heater and a portion of the holder corresponding to the at least one separation region to be smaller than a contact area between the planar heater and a portion of the holder not corresponding to the at least one separation region.
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10.发明申请公开(公告)号：US20200033752A1
公开(公告)日：2020-01-30
申请号：US16448294
申请日：2019-06-21
申请人： Tatsuya Kubo , Junichi Matsumoto , Hiroaki Okamoto , Shuntaroh Tamaki , Masashi Hommi , Daisuke Hirano
发明人： Tatsuya Kubo , Junichi Matsumoto , Hiroaki Okamoto , Shuntaroh Tamaki , Masashi Hommi , Daisuke Hirano
IPC分类号： G03G15/08
摘要： A powder amount detector is configured to detect an amount of powder in a powder container. The powder amount detector includes a pair of electrodes configured to detect capacitance between the pair of electrodes to detect the amount of powder. The pair of electrodes is flat plate electrodes disposed outside and across the powder container in parallel.
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