公开(公告)号：US20230408954A1

公开(公告)日：2023-12-21

申请号：US18461599

申请日：2023-09-06

申请人： BROTHER KOGYO KABUSHIKI KAISHA

发明人： Toshio FURUKAWA ,  Koji OGAWA ,  Fan XU ,  Kazuma HINOUE ,  Hotaka KAKUTANI ,  Shintaro FUKUOKA ,  Soun KANADA ,  Masahiko HAYAKAWA ,  Marika OZAKI ,  Masaki UEJI ,  Ayaka KOMORI ,  Enao YAMADA ,  Miho ISHIDA ,  Keigo NAKAJIMA ,  Shota IRIYAMA ,  Kengo YADA ,  Yuwen WANG ,  Junichi HASHIMOTO

IPC分类号： G03G15/16 ,  G03G21/12 ,  G03G15/09 ,  G03G15/02

CPC分类号： G03G15/161 ,  G03G21/12 ,  G03G15/1615 ,  G03G15/0907 ,  G03G15/0225 ,  G03G2215/1661

摘要： An image forming apparatus includes: a photosensitive drum; a magnetic roller; a transfer belt; a drum cleaning roller for collecting toner on the photosensitive drum and discharging collected toner to the photosensitive drum; a belt cleaner; a waste toner accommodating unit; and a controller configured to perform a printing operation for forming an image on a sheet and a cleaning operation for cleaning the drum cleaning roller. The controller is configured to perform: when performing the printing operation, collecting toner on the photosensitive drum using the drum cleaning roller; and when performing the cleaning operation, discharging the toner on the drum cleaning roller collected in the collecting to the photosensitive drum; transferring the toner on the photosensitive drum onto the transfer belt; and collecting the toner on the transfer belt using the belt cleaner so that the collected toner is accommodated in the waste toner accommodating unit.

公开(公告)号：US20220100123A1

公开(公告)日：2022-03-31

申请号：US17476173

申请日：2021-09-15

申请人： BROTHER KOGYO KABUSHIKI KAISHA

发明人： Shougo SATO ,  Koji OGAWA

IPC分类号： G03G15/08 ,  G03G21/16

摘要： A drum cartridge includes a drum cover movable relative to a photosensitive drum between a first position at which the drum cover covers a part of a circumferential surface of the photosensitive drum and a second position at which the drum cover does not cover the part of the circumferential surface. The drum cover is located at an opposite side of a toner cartridge with respect to the photosensitive drum in a state where the toner cartridge is attached to the drum cartridge and the drum cover is located at the second position. The drum cover is located at the first position in a state where the drum cartridge is attached to a drawer and the drawer is located at a pulled-out position and located at the second position in a state where the drum cartridge is attached to the drawer and the drawer is located at an accommodated position.

公开(公告)号：US20230062417A1

公开(公告)日：2023-03-02

申请号：US17821825

申请日：2022-08-24

申请人： BROTHER KOGYO KABUSHIKI KAISHA

发明人： Yasutada KATO ,  Yasuo FUKAMACHI ,  Shougo SATO ,  Koji OGAWA

IPC分类号： G03G21/18 ,  G03G21/00 ,  G03G15/08

摘要： A cartridge includes: a photosensitive drum; a drum cleaner for cleaning the photosensitive drum; a toner pipe for conveying collected toner; a toner container storing therein toner; and a developing device for supplying toner in the toner container to the photosensitive drum. The cartridge is detachably attachable to an image forming apparatus. The collected toner is toner removed from the photosensitive drum by the drum cleaner. The developing device includes a developing housing for storing therein toner supplied from the toner container and the collected toner conveyed by the toner pipe. The toner container has: a toner discharge port for discharging toner stored in the toner container; and a returned toner receiving port for receiving toner returned from the developing device. The developing housing has: a toner receiving port for receiving toner discharged from the toner discharge port; and a toner return port for returning toner to the toner container.

公开(公告)号：US20210271201A1

公开(公告)日：2021-09-02

申请号：US17186547

申请日：2021-02-26

申请人： BROTHER KOGYO KABUSHIKI KAISHA

发明人： Shougo SATO ,  Koji OGAWA

IPC分类号： G03G21/16 ,  G03G15/04

摘要： An image forming apparatus includes a photosensitive drum, an LED unit, and a housing. The LED unit is configured to expose the photosensitive drum. The LED unit has a light emitting surface. The housing includes a discharge portion and a discharge tray. The discharge portion has a discharge opening configured to discharge a sheet. The sheet discharged from the discharge opening is placed on the discharge tray. The discharge tray has a cleaning opening for cleaning the light emitting surface of the LED unit. The LED unit is configured to move between: a first position at which the LED unit exposes the photosensitive drum; and a second position at which the light emitting surface is closer to the cleaning opening than a state where the LED unit is located at the first position.