公开(公告)号：US12210316B2

公开(公告)日：2025-01-28

申请号：US18320120

申请日：2023-05-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yuji Mitsui

IPC: G03G21/20

Abstract: An image forming apparatus for forming an image on a sheet includes a rotatable image bearing member, a transfer roller, a fan, and a duct. The duct extends in a parallel direction to a shaft direction of the transfer roller and includes an inflow port to guide air. The duct further includes, in an area opposing the transfer roller, a first opening portion that is provided at a position closer to a first end side of the duct than to a second end side of the duct, and a second opening portion that is provided at a position closer to the second end side than to the first end side, in the parallel direction. The air supplied to the duct by the fan through the inflow port passes through the first opening portion and the second opening portion, and is supplied to the transfer roller.

公开(公告)号：US20250021032A1

公开(公告)日：2025-01-16

申请号：US18761617

申请日：2024-07-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： YU OGURO

IPC: G03G15/04 ,  G03G21/20

Abstract: An exposure device that has an elongated shape extending in an axial direction of a photosensitive member and exposes the photosensitive member includes: a substrate on which a plurality of light emitting elements that emits light to expose the photosensitive member is arranged in the axial direction; a lens array configured to collect the light emitted from the light emitting elements on the photosensitive member; a housing configured to hold the substrate and the lens array; and a housing support member configured to support the housing, in which one ends of the housing and the housing support member in a longitudinal direction are bonded with a first adhesive, the other ends of the housing and the housing support member in the longitudinal direction are bonded with a second adhesive, and a hardness of the first adhesive after curing is higher than a hardness of the second adhesive after curing.

公开(公告)号：US12197162B2

公开(公告)日：2025-01-14

申请号：US18357738

申请日：2023-07-24

Applicant: FUJIFILM BUSINESS INNOVATION CORP.

Inventor： Kiho Mitomo ,  Akira Shimodaira

IPC: G03G21/00 ,  G03G15/16 ,  G03G21/10 ,  G03G21/20

Abstract: According to an aspect of the present disclosure, there is provided a cleaning device including: an elastic plate-shaped cleaning unit that has a tip portion disposed in contact with a surface of an object-to-be-cleaned which moves in a predetermined direction, is provided to be inclined in a direction facing a moving direction of the object-to-be-cleaned, and cleans hot-melt powder remaining on the object-to-be-cleaned; a facing unit that is disposed in contact with a back surface side of the object-to-be-cleaned and is provided to face the cleaning unit across the object-to-be-cleaned; and a heating unit that heats a contact portion of the cleaning unit to a temperature lower than a softening point of the powder by heating the facing unit.

公开(公告)号：US20240419113A1

公开(公告)日：2024-12-19

申请号：US18656191

申请日：2024-05-06

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Fan XU ,  Koji OGAWA

IPC: G03G15/00 ,  G03G15/08 ,  G03G21/18 ,  G03G21/20

Abstract: A memory of an image forming apparatus is configured to store drum cartridge information and toner cartridge information. The drum cartridge information includes at least a number of drum printed sheets or a number of drum rotations. The toner cartridge information includes at least a number of toner printed sheets, a number of development rotations, or a toner dot count. A controller updates the drum cartridge information and the toner cartridge information stored in the memory in association with execution of image formation. The controller performs a rotation continuation operation of continuing rotations of a photosensitive drum and a development roller until a rotation continuation time elapses after a last sheet in a print job passes the photosensitive drum. The rotation continuation time is determined based on the drum cartridge information and the toner cartridge information.

公开(公告)号：US12147190B2

公开(公告)日：2024-11-19

申请号：US18156935

申请日：2023-01-19

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takeo Kawanami ,  Akinori Mitsumata ,  Takehiro Miyashita ,  Katsuhiko Oba

IPC: G03G15/20 ,  G03G15/08 ,  G03G21/20

Abstract: An image forming apparatus includes a photosensitive drum, a development device, a fixing device, an apparatus main body, and a fan including a rotating shaft that extends in a longitudinal direction of the photosensitive drum and a blade around the rotating shaft. The development device develops a toner image on the photosensitive drum. The fixing device fixes the toner image from the photosensitive drum to a recording material. The apparatus main body is provided with a discharge port from which the toner-fixed recording material is discharged. A length of the fan rotating shaft in the longitudinal direction is longer than a diameter of a rotational trajectory of the blade. The fan is provided on a downstream side of the fixing device in a discharge direction in which the recording material is discharged from the discharge port and overlaps a part of the development device when viewed in a vertical direction.

公开(公告)号：US20240377783A1

公开(公告)日：2024-11-14

申请号：US18659281

申请日：2024-05-09

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kazunobu Iritani

IPC: G03G15/00 ,  G03G21/20

Abstract: A load driving device including a power supply, a first acquisition processing portion, a second acquisition processing portion, and a third acquisition processing portion. The power supply converts power supplied from a commercial power supply and outputs the converted power to a load. The first acquisition processing portion acquires an initial temperature of the power supply at a time of starting driving of the load, based on an environmental temperature of the load driving device. The second acquisition processing portion acquires a drive current flowing through the load. The third acquisition processing portion acquires a temperature of the power supply at time of acquisition based on the initial temperature acquired by the first acquisition processing portion, the drive current acquired by the second acquisition processing portion, and the drive time of the load from the start of driving the load to the time of acquisition.

公开(公告)号：US12130584B2

公开(公告)日：2024-10-29

申请号：US18299428

申请日：2023-04-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroyuki Kadowaki

IPC: G03G15/16 ,  G03G15/00 ,  G03G21/00 ,  G03G21/20

CPC classification number: G03G21/206 ,  G03G15/161 ,  G03G15/5045 ,  G03G15/5054 ,  G03G15/1675 ,  G03G15/5008 ,  G03G2215/00084 ,  G03G2221/1645

Abstract: An image forming apparatus includes a forming unit, a transfer unit, a blowing unit, a temperature detection unit, and a control unit. The forming unit forms a toner image on a photosensitive member. The transfer unit transfers the formed toner image onto a recording material. The blowing unit takes outside air into the apparatus to generate an air flow for adjusting a temperature of the transfer unit. The temperature detection unit detects an ambient temperature outside the apparatus. The control unit controls driving of the blowing unit based on the detected ambient temperature. The control unit drives the blowing unit in a case where the detected ambient temperature is less than or equal to a first temperature threshold and a gradient value indicating a change in the detected ambient temperature is at least a first gradient threshold.

公开(公告)号：US12117760B2

公开(公告)日：2024-10-15

申请号：US18186598

申请日：2023-03-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroki Takayama ,  Yuki Tashiro

IPC: G03G21/00 ,  G03G21/16 ,  G03G21/20

CPC classification number: G03G21/1633 ,  G03G21/206 ,  G03G2221/1645

Abstract: An image forming apparatus includes first, second, and third covers, first and second ducts, and a plurality of image forming units, including first and second image forming units. The second cover is between the first cover and the plurality of image forming units to cover the plurality of image forming units. The first duct is disposed on the second cover to guide air absorbed from outside of the image forming apparatus through an air intake to the first image forming unit. The second duct is disposed on the second cover to guide air absorbed from the outside of the image forming apparatus through the air intake to the second image forming unit. The third cover is attachable to and detachable from the second cover to cover an opening of the second cover. At least part of the first image forming unit is insertable and extractable through the opening.

公开(公告)号：US20240329596A1

公开(公告)日：2024-10-03

申请号：US18355846

申请日：2023-07-20

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Shunsuke YAMASAKI ,  Yuta SHIMATATE

IPC: G03G21/20 ,  G03G15/20

CPC classification number: G03G21/206 ,  G03G15/2021 ,  G03G2221/1645

Abstract: An image forming system includes: a transfer unit that transfers an image formed of a thermally fusible image-forming material to a medium that moves; a thermal fixing unit disposed downstream of the transfer unit in a moving direction in which the medium moves, the thermal fixing unit fixing the image on the medium by at least heating the image; and a cooling unit that cools a spatial region between the transfer unit and the thermal fixing unit. The cooling unit has suction openings through which outside air is taken into the spatial region between the transfer unit and the thermal fixing unit from both sides of the spatial region in a crossing direction crossing the moving direction of the medium. The cooling unit includes an exhaust unit that draws in and discharges air in the spatial region such that an amount of air drawn in a central region in the crossing direction of the medium is greater than an amount of air drawn in regions adjacent to ends in the crossing direction of the medium.

公开(公告)号：US20240319643A1

公开(公告)日：2024-09-26

申请号：US18731507

申请日：2024-06-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kensuke UMEDA ,  Shinsuke KOBAYASHI ,  Ai SUZUKI ,  Kazuhiro FUNATANI

IPC: G03G15/20 ,  G03G21/20

CPC classification number: G03G15/2053 ,  G03G15/2017 ,  G03G21/203

Abstract: A heating device has a first rotating member that is heated by a heat source, and a second rotating member that forms a nip portion with the first rotating member, such that a recording material is heated up at the nip portion. The heating device further has: a first cover disposed along an outer peripheral surface of the first rotating member, so as to surround the first rotating member, and a second cover, disposed between the first cover and the first rotating member, and having a protruding portion that protrudes towards the first rotating member. In a longitudinal direction of the first rotating member, a length of the first rotating member is a first length, and a length of the protruding portion is a second length that is smaller than the first length.