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公开(公告)号：US20240302774A1
公开(公告)日：2024-09-12
申请号：US18665902
申请日：2024-05-16
Applicant: Toshiba Tec Kabushiki Kaisha
Inventor： Toshihiro SONE
IPC: G03G15/20
CPC classification number: G03G15/2053 , G03G15/2064 , G03G2215/2038
Abstract: According to an embodiment, a heating device includes a cylindrical belt, a heater, a press roller, and a holder. The heater is disposed on an inner surface of the belt. The press roller rotates and is configured to contact an outer surface of the belt at a position opposite the heater to form a nip. The end portions of the press roller project by a first amount in a radial direction more than the central portion of the press roller. A holder has a first surface supporting the heater to face the cylindrical belt. The holder has a second surface that is opposite of the first surface with a center portion projecting in a direction orthogonal to the first surface more than the end portions of the second surface by a second projection amount that is greater than the first projection amount.
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公开(公告)号：US12078947B2
公开(公告)日：2024-09-03
申请号：US18154141
申请日：2023-01-13
Applicant: Canon Kabushiki Kaisha
Inventor： Takashi Uehara
CPC classification number: G03G15/205 , G03G15/2064 , G03G15/5004 , G03G2215/2038
Abstract: An image forming apparatus includes: a heating unit including a heating rotation member configured to heat a recording medium: a pressure rotation member which contacts the heating rotation member to form a nip portion to fix a toner image to the recording medium, a heat source configured to heat the heating rotation member, the heat source including a first heater and a second heater, and a control unit configured to control the first heater and the second heater, wherein the image forming unit is operable to transition to: a fixing state in which an operation to fix the toner image to the recording medium is performed by receiving a job; and a standby state, to wait for the job, in which an operation to fix the toner image to the recording medium is not performed.
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公开(公告)号：US12066780B2
公开(公告)日：2024-08-20
申请号：US18132991
申请日：2023-04-11
Applicant: Shogo Nakamoto , Arinobu Yoshiura , Daisuke Inoue
Inventor： Shogo Nakamoto , Arinobu Yoshiura , Daisuke Inoue
IPC: G03G15/20
CPC classification number: G03G15/2053 , G03G15/2017 , G03G15/2064 , G03G2215/2035 , G03G2215/2038
Abstract: A fixing device includes an endless fixing rotator, a slide aid, a pressure rotator, a nip formation plate, a support, a heat source, and a reflector. The endless fixing rotator has flexibility. An inner circumferential surface of the fixing rotator slides over the slide aid. The pressure rotator contacts an outer circumferential surface of the fixing rotator. The nip formation plate is disposed inside the fixing rotator to contact the pressure rotator via the fixing rotator and the slide aid to form a nip between the fixing rotator and the pressure rotator. The nip formation plate has a thermal conductivity equal to or greater than 10 W/mK. The support supports the nip formation plate. The heat source is disposed inside the fixing rotator to heat the fixing rotator. The reflector reflects radiant heat from the heat source.
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公开(公告)号：US20240210866A1
公开(公告)日：2024-06-27
申请号：US18319511
申请日：2023-05-18
Applicant: FUJIFILM Business Innovation Corp.
Inventor： Ryosuke KUBOTA
IPC: G03G15/20
CPC classification number: G03G15/2057 , G03G15/2064 , G03G2215/2038
Abstract: A tubular fixing member includes a first layer and a second layer that is disposed in contact with an outer circumferential side of the first layer. In a case where thermal conductivities of the first layer in an axial direction, a circumferential direction, and a thickness direction are denoted by λ1x, λ1y, and λ1z, respectively, and thermal conductivities of the second layer in the axial direction, the circumferential direction, and the thickness direction are denoted by λ2x, λ2y, and λ2z, respectively, the following requirements (1), (2), and (3) are satisfied.
Requirement
(
1
)
:
λ
1
x
λ
2
z
Requirement
(
3
)
:
λ
2
x
>
λ
2
y
and
λ
2
x
>
λ
2
z-
公开(公告)号：US20240160138A1
公开(公告)日：2024-05-16
申请号：US18387468
申请日：2023-11-07
Applicant: Kazuto SHIBUYA
Inventor： Kazuto SHIBUYA
IPC: G03G15/20
CPC classification number: G03G15/206 , G03G15/2064 , G03G2215/2038
Abstract: A fixing device includes a belt, a nip formation pad, and a pressure rotator. The belt has a loop rotatable in a sheet conveyance direction. The nip formation pad is inside the loop and includes three curved portions in the sheet conveyance direction. The three curved portions form a nip formation face. The pressure rotator presses the belt against the nip formation pad to form a fixing nip between the belt and the pressure rotator.
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Patent Agency Ranking
公开(公告)号：US11947293B2
公开(公告)日：2024-04-02
申请号：US17955991
申请日：2022-09-29
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Kazuki Takatsuka
IPC: G03G15/20
CPC classification number: G03G15/2053 , G03G15/2064 , G03G2215/2038
Abstract: A fusing device includes: an endless rotatable fusing belt; a nip forming member that is disposed on an inner circumferential surface of the fusing belt; a pressure roller that is in pressure contact with the nip forming member from an outer side of the fusing belt and forms a fusing nip area between the pressure roller and the fusing belt; and a heat source that is disposed inside the fusing belt and heats the fusing belt. The fusing device further includes a heat-conductive member that is disposed on a lateral side of an outer circumference of the fusing belt. The heat-conductive member extends over a width area in a rotation axis direction of the fusing belt.
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公开(公告)号：US11934125B2
公开(公告)日：2024-03-19
申请号：US17897087
申请日：2022-08-26
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideki Ohta
CPC classification number: G03G15/2053 , G03G15/2064 , G03G15/5008 , G03G2215/2038
Abstract: An image forming apparatus includes a heating rotary member that heats toner born on a recording material, and a pressure rotary member that pressurizes the heating rotary member. These rotary members form a fixing nip portion and fix a toner image to the recording material at the fixing nip portion while nipping and conveying the recording material. The apparatus further includes a web that collects toner adhering to a surface of the heating rotary member, a winding roller that winds the web, a motor that rotates the winding roller, a contact member that makes contact with an outer surface of the wound web and moves based on a position of the outer surface, a variable resistor that is connected to change a resistance value depending on a position of the contact member, and a control unit that controls a rotation amount of the motor based on the resistance value.
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公开(公告)号：US11934118B2
公开(公告)日：2024-03-19
申请号：US17839616
申请日：2022-06-14
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Kazuna Taguchi , Mingguang Zhang
IPC: G03G15/20
CPC classification number: G03G15/2017 , G03G15/2042 , G03G15/2053 , G03G15/2064 , G03G2215/2038
Abstract: A fuser configured to nip a sheet by a heating member and a pressurizing member and to thermally fix an image formed in a toner on the sheet, is provided. The fuser includes a supporting member, a temperature sensor, and a sensor cover. The supporting member supports the heating member. The temperature sensor is attached to the supporting member and is configured to detect a temperature of the heating member without contacting the heating member. The sensor cover is located on a side of the temperature sensor opposite to the heating member to cover the temperature sensor. The sensor cover includes a base having an opening at an upper position with respect to the temperature sensor and a windshield wall located in adjacent to the base. The windshield wall protrudes upward and extends in a lengthwise direction for the heating member.
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公开(公告)号：US20240069476A1
公开(公告)日：2024-02-29
申请号：US18333754
申请日：2023-06-13
Applicant: CANON KABUSHIKI KAISHA
Inventor： AKINORI YOKOTA , OSAMU SASAOKA , TSUGUHIRO YOSHIDA
IPC: G03G15/20
CPC classification number: G03G15/2053 , G03G15/2064 , G03G2215/2038
Abstract: A fixing device includes a cylindrical fixing member, a heater arranged in an inner space of the fixing member, a pressing member to contact the fixing member and a conductive member disposed so as to contact an inner surface of the fixing member and to conduct the fixing member to a circuit for controlling a potential of the fixing member The fixing member heats an image on a recording material to fix the image onto the recording material while nipping and conveying the recording material between the fixing member and the pressing member. The conductive member is formed of metal wire.
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10.发明公开公开(公告)号：US20240004334A1
公开(公告)日：2024-01-04
申请号：US18337640
申请日：2023-06-20
Applicant: Brother Kogyo Kabushiki Kaisha
Inventor： Yasutada KATO , Yuichi IKENO
IPC: G03G15/20
CPC classification number: G03G15/2064 , G03G15/2039 , G03G15/2053 , G03G2215/2038
Abstract: An image forming apparatus includes: a heater; an endless belt; a rotary body configured to form a nipping region in cooperation with the heater; a nipping pressure changing mechanism configured to change a nipping pressure at the nipping region between a first nipping pressure and a second nipping pressure higher than the first nipping pressure; and a controller configured to perform a control process including: determining whether the nipping pressure is the first nipping pressure or the second nipping pressure; and controlling, when determining that the nipping pressure is the first nipping pressure, an output of the heater within a range that does not exceed an upper limit for the output of the heater when the nipping pressure is the first nipping pressure that is smaller than an upper limit for the output of the heater when the nipping pressure is the second nipping pressure.
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