公开(公告)号：US20140056625A1

公开(公告)日：2014-02-27

申请号：US13953966

申请日：2013-07-30

申请人： Yutaka NAITOH ,  Tomohiko FUJII ,  Minoru TOYODA ,  Hitoshi FUJIWARA ,  Tomoya ADACHI ,  Yasuharu KAWARASAKI ,  Tetsu MORINO ,  Isamu KUBO ,  Yoshiharu TAKAHASHI

发明人： Yutaka NAITOH ,  Tomohiko FUJII ,  Minoru TOYODA ,  Hitoshi FUJIWARA ,  Tomoya ADACHI ,  Yasuharu KAWARASAKI ,  Tetsu MORINO ,  Isamu KUBO ,  Yoshiharu TAKAHASHI

IPC分类号： G03G15/20

CPC分类号： G03G21/1685 ,  G03G15/2053 ,  G03G2215/2035

摘要： A fixing unit includes an endless belt accommodating a heat source inside a loop formed by the endless belt, a rotary pressing member rotating in contact with the endless belt in a pressure contact section, and a heat transfer member secured to a side plate within the loop of the endless belt to support and heat the endless belt with heat conducted from the heat source. The heat transfer member has an opening opposite the rotary pressing member. A securing member is disposed in the opening of the heat transfer member in pressure contact with the rotary pressing member via the endless belt. The heat transfer member and the securing member collectively include a pair of latching parts to firmly connect the heat transfer member and the securing member with each other when one of the latching parts is fitted to the other one of the latching parts.

摘要翻译： 定影单元包括：环形带，其在由环形带形成的环内容纳热源;旋转按压构件，其在压力接触部分中与环形带接触旋转;以及传热构件，固定到环内的侧板 的环形带，以便从热源传导的热量来支撑和加热环形带。 传热构件具有与旋转按压构件相对的开口。 固定构件设置在传热构件的开口中，经由环形带与旋转按压构件压力接触。 传热构件和固定构件共同包括一对闩锁部件，当一个闩锁部件嵌合到另一个闩锁部件中时，将传热构件和固定构件彼此牢固地连接。

公开(公告)号：US20230205119A1

公开(公告)日：2023-06-29

申请号：US17967908

申请日：2022-10-18

申请人： Hitoshi FUJIWARA

发明人： Hitoshi FUJIWARA

IPC分类号： G03G15/20

CPC分类号： G03G15/2053

摘要： A fixing device includes a first rotator, a second rotator, a heater, and a discharger. The first rotator includes a conductive first layer, a non-conductive second layer, and a conductive third layer. The first to third layers exist in an order of the first layer to the third layer from a center of the first rotator to an outside of the first rotator. The second rotator forms a nip between the first rotator and the second rotator. A recording medium bearing a toner image passes through the nip. The heater is disposed inside a loop of the second rotator and heats the second rotator. The discharger is in contact with the first layer and the third layer and removes electric charge from the first rotator.

公开(公告)号：US20230004110A1

公开(公告)日：2023-01-05

申请号：US17840013

申请日：2022-06-14

申请人： Hitoshi FUJIWARA

发明人： Hitoshi FUJIWARA

IPC分类号： G03G15/20

摘要： A heating device includes a heater, a rotator, and a pressure rotator. The heater includes resistive heat generators forming a heat generation area and has a separation area formed by the resistive heat generators. The pressure rotator includes a first region and a second region. The first region faces the heater in a range of 20 mm from a center position of the heat generation area toward an end thereof in the arrangement direction. The second region faces the heater in at least a part of a range of 30 mm from a center position of the separation area toward the center position of the heat generation area. An outer diameter of the pressure rotator increases from the center toward the end. The outer diameter of the second region increases at an increasing rate larger than an increasing rate of the outer diameter of the first region.

公开(公告)号：US20220397847A1

公开(公告)日：2022-12-15

申请号：US17825421

申请日：2022-05-26

申请人： Hitoshi FUJIWARA

发明人： Hitoshi FUJIWARA

IPC分类号： G03G15/20

摘要： A heating device includes a heater, a safety device, and a holder. The safety device has a heat-sensitive surface facing the heater. The safety device cuts off power supply to the heater in response to reaching a temperature of the heat-sensitive surface to be equal to or higher than a predetermined temperature. The holder holds the heater. The holder has a through hole that opens toward the heater and includes a step portion disposed on an inner circumferential surface of the through hole. The step portion supports an end of the heat-sensitive surface such that a central portion of the heat-sensitive surface of the safety device is not in contact with the heater.

公开(公告)号：US20220276593A1

公开(公告)日：2022-09-01

申请号：US17529306

申请日：2021-11-18

申请人： Hitoshi FUJIWARA

发明人： Hitoshi FUJIWARA

IPC分类号： G03G15/20 ,  G03G15/00

摘要： A fixing device includes a fixing rotator, a heater, a pressure rotator, a stay, a biasing member fixed to the stay, and a nip formation pad. The nip formation pad is supported by the stay, disposed inside the fixing rotator, and forms a nip. The nip formation pad includes at least one engaged portion at a position other than both ends of the nip formation pad or engaged portions at both ends of the nip formation pad. The at least one engaged portion engages an engaging portion in the stay to generate a first rotational moment. The engaged portions at both ends engage engaging portions in the stay to generate a second rotational moment. Each rotational moment is smaller than a rotational moment generated by engagement between an engaging portion in the stay and an engaged portion at only one end of the nip formation pad.

公开(公告)号：US20220075302A1

公开(公告)日：2022-03-10

申请号：US17413586

申请日：2020-02-19

申请人： Naoki IWAYA ,  Hitoshi FUJIWARA

发明人： Naoki IWAYA ,  Hitoshi FUJIWARA

IPC分类号： G03G15/20

摘要： A nip formation member includes a base, a high thermal conduction member, and a securing member. The high thermal conduction member has a thermal conductivity greater than a thermal conductivity of the base. The securing member is independent from the base and the high thermal conduction member. The securing member is configured to restrict movement of the base relative to the high thermal conduction member.

公开(公告)号：US20210011400A1

公开(公告)日：2021-01-14

申请号：US16897343

申请日：2020-06-10

申请人： Takuya SESHITA ,  Hiroshi KAJIYAMA ,  Hitoshi FUJIWARA

发明人： Takuya SESHITA ,  Hiroshi KAJIYAMA ,  Hitoshi FUJIWARA

IPC分类号： G03G15/20

摘要： A fixing device includes a fixing rotator, a pressure rotator configured to press the fixing rotator, a fixing structure, a temperature detector, a discharger, and a holder. The fixing structure is configured to hold at least one of the fixing rotator and the pressure rotator. The temperature detector is configured to contact a detected member that is at least one of the fixing rotator and the pressure rotator and detect a temperature of the detected member. The discharger is configured to contact and discharge the detected member. The holder is fixed on the fixing structure and configured to hold the temperature detector and the discharger.

公开(公告)号：US20210003947A1

公开(公告)日：2021-01-07

申请号：US16869737

申请日：2020-05-08

申请人： Hitoshi FUJIWARA ,  Hiroshi Kajiyama

发明人： Hitoshi FUJIWARA ,  Hiroshi Kajiyama

IPC分类号： G03G15/20

摘要： A presser presses a rotator and switches between a pressurization state in which the presser presses the rotator and a depressurization state in which the presser releases the pressurization state. The presser includes a pressure portion that presses the rotator in the pressurization state. The presser further includes a retracted portion that retracts from the pressure portion in a retracting direction in which the retracted portion retracts from the rotator. The retracted portion presses the rotator in the depressurization state.