公开(公告)号：US20230221664A1

公开(公告)日：2023-07-13

申请号：US17978993

申请日：2022-11-02

Applicant: Hitoshi FUJIWARA

Inventor： Hitoshi FUJIWARA

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2032 ,  G03G2215/2035

Abstract: A fixing device includes a first rotator, a second rotator, a heater, a conductor, 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 conductor is in contact with one of the first layer and the third layer. The discharger is in contact with the conductor and the other one of the first layer and the third layer and removes electric charge from the first rotator.

公开(公告)号：US20210041820A1

公开(公告)日：2021-02-11

申请号：US16938116

申请日：2020-07-24

Applicant: Hitoshi FUJIWARA

Inventor： Hitoshi FUJIWARA

IPC: G03G15/20 ,  G03G15/16

Abstract: A driver includes a first rotator, a second rotator, a bearing, a housing, a drive gear, a first idler gear, a pivot member, and a second idler gear. The first idler gear is meshed with the drive gear. The pivot member rotates around a rotation center axis in the housing and includes an idler gear support portion rotatably holding the first idler gear. The second idler gear is meshed with the first idler gear and disposed on the rotation center axis of the pivot member. A rotation center of the pivot member is present in a region outside a circle having a diameter of 1.5×L and inside a circle having a diameter of 1.8×L around a rotation center of the first idler gear, when a distance between a rotation center of the first rotator and the rotation center of the first idler gear is L.

公开(公告)号：US20240295847A1

公开(公告)日：2024-09-05

申请号：US18582704

申请日：2024-02-21

Applicant: Shigeo NANNO ,  Yutaka IKEBUCHI ,  Hitoshi FUJIWARA ,  Hiromasa TAKAGI ,  Yuusuke FURUICHI

Inventor： Shigeo NANNO ,  Yutaka IKEBUCHI ,  Hitoshi FUJIWARA ,  Hiromasa TAKAGI ,  Yuusuke FURUICHI

IPC: G03G15/20 ,  G03G21/16

CPC classification number: G03G15/2057 ,  G03G15/2064 ,  G03G21/1619 ,  G03G21/1647

Abstract: A heating device includes a first rotator and a second rotator that contacts the first rotator to form a nip between the first rotator and the second rotator. A heater heats at least one of the first rotator or the second rotator. A first support frame supports one lateral end of the first rotator and the second rotator in a longitudinal direction of the first rotator and the second rotator. A second support frame supports another lateral end of the first rotator and the second rotator in the longitudinal direction of the first rotator and the second rotator. An incompatible member is mounted on the first support frame.

公开(公告)号：US20240241467A1

公开(公告)日：2024-07-18

申请号：US18403753

申请日：2024-01-04

Applicant: Yutaka IKEBUCHI ,  Shigeo NANNO ,  Hitoshi FUJIWARA ,  Yuusuke FURUICHI

Inventor： Yutaka IKEBUCHI ,  Shigeo NANNO ,  Hitoshi FUJIWARA ,  Yuusuke FURUICHI

IPC: G03G15/20

CPC classification number: G03G15/2053

Abstract: A fixing device includes a belt and a holder that holds a heater. A conductive member contacts an inner face of the belt and pivots. The conductive member includes one end portion in a rotation direction of the belt and an opposed portion that abuts on the one end portion. A support supports the holder and presses the conductive member against the holder. The holder includes a holding portion that holds the one end portion of the conductive member, a pivot restrictor that restricts pivoting of the conductive member about the one end portion, and a mount face from which the pivot restrictor projects in a projecting direction. The pivot restrictor projects farther than the opposed portion of the conductive member in the projecting direction of the pivot restrictor in a state in which the support does not press the conductive member against the holder.

公开(公告)号：US20200285178A1

公开(公告)日：2020-09-10

申请号：US16750066

申请日：2020-01-23

Applicant: Hitoshi FUJIWARA

Inventor： Hitoshi FUJIWARA

IPC: G03G15/20

Abstract: A nip former includes a base, an enhanced thermal conductor including an insertion hole, and a securing member including an inserting portion to be inserted into the insertion hole to attach the securing member to the enhanced thermal conductor such that the enhanced thermal conductor and the securing member sandwich the base. The inserting portion has a width that is smaller than a width of the insertion hole in a pressurization direction of an opposed rotator that presses against the nip former via a belt. The inserting portion does not contact an upstream wall and a downstream wall of the insertion hole in the pressurization direction of the opposed rotator and a direction opposite the pressurization direction of the opposed rotator in a state in which the securing member is secured to the base and the opposed rotator presses against the enhanced thermal conductor via the belt.

公开(公告)号：US20150248091A1

公开(公告)日：2015-09-03

申请号：US14712439

申请日：2015-05-14

Applicant: Shigeo NANNO ,  Yutaka NAITOH ,  Minoru TOYODA ,  Tomohiko FUJII ,  Hitoshi FUJIWARA

Inventor： Shigeo NANNO ,  Yutaka NAITOH ,  Minoru TOYODA ,  Tomohiko FUJII ,  Hitoshi FUJIWARA

IPC: G03G15/20

CPC classification number: G03G15/2028 ,  G03G15/2053 ,  G03G2215/2035

Abstract: A fixing device includes a heat conductor disposed opposite an inner circumferential surface of an endless belt to heat the endless belt. A nip formation pad is disposed opposite the inner circumferential surface of the endless belt and presses the endless belt against a pressing rotary body to form a fixing nip between the endless belt and the pressing rotary body through which a recording medium bearing a toner image is conveyed. A support is disposed opposite an inner circumferential surface of the heat conductor and contacts an abutment face of the nip formation pad to support the nip formation pad against pressure from the pressing rotary body. A heat insulator is interposed between the heater and the nip formation pad and the support to shield the nip formation pad and the support from the heater.

Abstract translation: 定影装置包括与环形带的内周面相对设置的加热导体的加热导体。 压区形成垫与环形带的内圆周表面相对地设置，并将环形带压靠在压制旋转体上，以在环形带和压制旋转体之间形成定影辊隙，通过该压紧旋转体，承载调色剂图像的记录介质 。 支撑件布置成与导热体的内圆周表面相对并且接触压区形成垫的邻接表面以支撑压区形成垫抵抗来自压制旋转体的压力。 加热器和辊隙形成垫和支撑件之间插入绝热体，以将压区形成垫和支撑件从加热器屏蔽。

公开(公告)号：US20140099146A1

公开(公告)日：2014-04-10

申请号：US14017383

申请日：2013-09-04

Applicant: Tomohiko FUJII ,  Shigeo NANNO ,  Yutaka NAITOH ,  Minoru TOYODA ,  Hitoshi FUJIWARA ,  Tomoya ADACHI ,  Yasuharu KAWARASAKI

Inventor： Tomohiko FUJII ,  Shigeo NANNO ,  Yutaka NAITOH ,  Minoru TOYODA ,  Hitoshi FUJIWARA ,  Tomoya ADACHI ,  Yasuharu KAWARASAKI

IPC: G03G15/20

CPC classification number: G03G15/2089 ,  G03G15/206

Abstract: A fixing device includes a fixing rotary body and a pressing rotary body disposed opposite the fixing rotary body. A pivotable pressurization member contacts and presses the pressing rotary body against the fixing rotary body. A pressurization pivot is provided on the pressurization member. A depressurization member, pivotable about the pressurization pivot, causes the pressurization member to isolate the pressing rotary body from the fixing rotary body. A depressurization pivot is provided on the depressurization member. A lock is pivotable about the depressurization pivot and engageable with the pressurization pivot. A biasing member, anchored to the lock, exerts a resilient bias that allows the lock to cause the pressurization member to press the pressing rotary body against the fixing rotary body. A detent is situated in a pivotal trajectory of the lock to restrict pivot of the lock by contacting the lock.

Abstract translation: 定影装置包括定影旋转体和与定影旋转体相对设置的按压旋转体。 可枢转的加压构件接触压紧旋转体抵靠定影旋转体。 在加压构件上设有加压枢轴。 减压构件可围绕增压枢轴转动，使得加压构件将压制旋转体与固定旋转体隔离。 在减压部件上设有减压枢轴。 锁可围绕减压枢轴枢转并与加压枢轴接合。 锚定在锁上的偏置构件施加弹性偏压，该偏压允许锁定使加压构件将压紧旋转体按压在定影旋转体上。 锁定件位于锁的枢转轨迹中，以通过接触锁来限制锁的枢转。

公开(公告)号：US20240295842A1

公开(公告)日：2024-09-05

申请号：US18443333

申请日：2024-02-16

Applicant: Hitoshi FUJIWARA ,  Yutaka IKEBUCHI ,  Shigeo NANNO ,  Hiromasa TAKAGI ,  Yuusuke FURUICHI

Inventor： Hitoshi FUJIWARA ,  Yutaka IKEBUCHI ,  Shigeo NANNO ,  Hiromasa TAKAGI ,  Yuusuke FURUICHI

IPC: G03G15/20

CPC classification number: G03G15/2017 ,  G03G15/2057 ,  G03G15/206 ,  G03G15/2064

Abstract: A frame device includes a body frame and a rotator that rotates in a rotation direction. A first support frame supports one lateral end of the rotator in a longitudinal direction of the rotator. The first support frame includes a first attachment portion that is attached to the body frame. A second support frame supports another lateral end of the rotator in the longitudinal direction of the rotator. The second support frame includes a second attachment portion that is attached to the body frame.

公开(公告)号：US20240248426A1

公开(公告)日：2024-07-25

申请号：US18414486

申请日：2024-01-17

Applicant: Hiromasa TAKAGI ,  Hitoshi FUJIWARA ,  Shigeo NANNO ,  Yutaka IKEBUCHI ,  Yuusuke FURUICHI

Inventor： Hiromasa TAKAGI ,  Hitoshi FUJIWARA ,  Shigeo NANNO ,  Yutaka IKEBUCHI ,  Yuusuke FURUICHI

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2064 ,  G03G2215/2025 ,  G03G2215/2048

Abstract: A fixing device includes a belt that rotates in a rotation direction and a heater that heats the belt. A conductive member contacts an inner face of the belt and pivots. The conductive member includes one end portion in the rotation direction of the belt, a contact portion that contacts the belt, and an outboard portion that is disposed outboard from the contact portion in the rotation direction of the belt. A holding portion holds the one end portion of the conductive member. A pivot restrictor contacts the outboard portion of the conductive member. The pivot restrictor restricts pivoting of the conductive member about the one end portion of the conductive member.

公开(公告)号：US20230375965A1

公开(公告)日：2023-11-23

申请号：US18142031

申请日：2023-05-02

Applicant: Hitoshi FUJIWARA

Inventor： Hitoshi FUJIWARA

IPC: G03G15/20

CPC classification number: G03G15/2028 ,  G03G15/2064

Abstract: A fixing device includes a first rotator, a second rotator, a heater, a separator, and a resistor. The second rotator is in contact with an outer circumferential surface of the first rotator to form a nip through which a recording medium bearing an unfixed image passes. The heater includes a heat generator and heats the first rotator. The separator is in contact with an outer circumferential surface of the first rotator and separates the recording medium passing through the nip from the first rotator. The resistor couples the second rotator and the separator to the ground.