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公开(公告)号：US20230244158A1
公开(公告)日：2023-08-03
申请号：US18188409
申请日：2023-03-22
发明人： Shougo Sato , Miho Ishida
CPC分类号： G03G15/0889 , G03G21/105 , G03G15/0886
摘要： In an image forming apparatus, a drum cartridge includes a photosensitive drum, a developing device, a drum cleaner, a waste toner tube, and a flange. The waste toner tube includes a first end portion communicating with the drum cleaner and a second end portion connected to the flange. The developing device includes a protruding portion facing the flange. The cushion member is located between the flange and the protruding portion. The cushion member allows a cartridge mounting part of the developing device to move with respect to the flange in a case where the developing device moves with respect to the photosensitive drum.
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公开(公告)号：US12050431B2
公开(公告)日：2024-07-30
申请号：US18304564
申请日：2023-04-21
发明人： Shougo Sato , Miho Ishida
CPC分类号： G03G21/1803 , G03G15/0877 , G03G21/1633 , G03G21/1676 , G03G2221/163 , G03G2221/1654
摘要： An image forming apparatus includes a housing, a top cover having an opening, a process cartridge attachable to the housing, a toner cartridge attachable to the process cartridge, and an interlocking mechanism. The top cover is pivotally movable between a first position closing the opening and a second position opening the opening. In a state where the toner cartridge is attached to the process cartridge, the toner cartridge is pivotally movable between an attachment/detachment position where the toner cartridge is attachable to and detachable from the process cartridge; and a fixed position where the toner cartridge is fixed to the process cartridge. The interlocking mechanism is configured to pivotally move the toner cartridge to the attachment/detachment position when the top cover is moved to the second position, and to pivotally move the toner cartridge to the fixed position when the top cover is moved to the first position.
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公开(公告)号：US11693354B2
公开(公告)日：2023-07-04
申请号：US17655619
申请日：2022-03-21
发明人： Shougo Sato , Miho Ishida
CPC分类号： G03G21/1803 , G03G21/1633 , G03G21/1676 , G03G2221/163 , G03G2221/1654
摘要： An image forming apparatus includes a housing, a top cover having an opening, a process cartridge attachable to the housing, a toner cartridge attachable to the process cartridge, and an interlocking mechanism. The top cover is pivotally movable between a first position closing the opening and a second position opening the opening. In a state where the toner cartridge is attached to the process cartridge, the toner cartridge is pivotally movable between an attachment/detachment position where the toner cartridge is attachable to and detachable from the process cartridge; and a fixed position where the toner cartridge is fixed to the process cartridge. The interlocking mechanism is configured to pivotally move the toner cartridge to the attachment/detachment position when the top cover is moved to the second position, and to pivotally move the toner cartridge to the fixed position when the top cover is moved to the first position.
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公开(公告)号：US11619897B2
公开(公告)日：2023-04-04
申请号：US17831768
申请日：2022-06-03
发明人： Miho Ishida , Shintaro Fukuoka , Toshio Furukawa , Toshinori Araki , Masaya Takasu , Takuro Nishimura
摘要： In an image forming apparatus, an image forming unit configured to form a toner image on a transfer medium includes four sets of a photoconductor drum and a development roller, respectively, for forming toner images of first, second, third and fourth colors, arranged in this order, in a direction opposite to a direction of movement of the transfer medium moving toward a detector configured to detect a toner image formed on the transfer medium. A controller executes a bias-corrective test image forming process in which a first bias-corrective test image of the first color is arranged in a position downstream of other three first bias-corrective test images, and a second bias-corrective test image of the first color is arranged in a position between two first bias-corrective test images selected among other three first bias-corrective test images, in the direction of movement of the transfer medium.
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公开(公告)号：US11874626B2
公开(公告)日：2024-01-16
申请号：US17365092
申请日：2021-07-01
发明人： Shougo Sato , Miho Ishida
CPC分类号： G03G21/1803 , G03G15/75 , G03G21/10 , G03G21/1671 , G03G21/1846
摘要： An image forming apparatus including a housing, a drawer movable between an inner position accommodated within the housing and an outer position exposed to an outside of the housing, a drum cartridge including a photosensitive drum and a drum frame, and a developing cartridge including a developing roller and a handle. The drum frame includes first side and second side, frames supporting first and second end portions of the photosensitive drum, respectively, and an upper frame connecting upper end portions of the first and second side frames to each other. In a state where the drum cartridge to which the developing cartridge has been attached is attached to the drawer, a portion of the handle is positioned above the upper frame.
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公开(公告)号：US11733645B2
公开(公告)日：2023-08-22
申请号：US17811910
申请日：2022-07-12
发明人： Shougo Sato , Miho Ishida
IPC分类号： G03G21/18
CPC分类号： G03G21/1814 , G03G21/1842
摘要： An image forming apparatus includes: a housing; a drawer; and first and second process cartridges attachable to the drawer. The first process cartridge includes a first drum cartridge including a first photosensitive drum and a first developing cartridge including a first developing roller. When attached to the first drum cartridge, the first developing cartridge is movable between a first position where the first developing cartridge is detachable from the first drum cartridge and a second position where the first developing cartridge is not detachable from the first drum cartridge. In a state where the first and second process cartridges are attached to the drawer at positions adjacent to each other, the first developing cartridge comes into contact with the second process cartridge during movement of the first developing cartridge from the second position to the first position before the first developing cartridge reaches the first position.
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公开(公告)号：US11429058B2
公开(公告)日：2022-08-30
申请号：US17239908
申请日：2021-04-26
发明人： Shougo Sato , Miho Ishida
IPC分类号： G03G21/18
摘要： An image forming apparatus includes: a housing; a drawer; and first and second process cartridges attachable to the drawer. The first process cartridge includes a first drum cartridge including a first photosensitive drum and a first developing cartridge including a first developing roller. When attached to the first drum cartridge, the first developing cartridge is movable between a first position where the first developing cartridge is detachable from the first drum cartridge and a second position where the first developing cartridge is not detachable from the first drum cartridge. In a state where the first and second process cartridges are attached to the drawer at positions adjacent to each other, the first developing cartridge comes into contact with the second process cartridge during movement of the first developing cartridge from the second position to the first position before the first developing cartridge reaches the first position.
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公开(公告)号：US11119441B2
公开(公告)日：2021-09-14
申请号：US17096028
申请日：2020-11-12
发明人： Shougo Sato , Miho Ishida
摘要： An image forming apparatus includes: a housing; a drawer movable between an inner position accommodated within the housing and an outer position exposed to an outside of the housing; a drum cartridge including a photosensitive drum and a drum frame; a developing cartridge; and a pressing member for pressing the drum frame. The drum frame includes: first and second side frames supporting first and second end portions of the photosensitive drum, respectively; and an upper frame connecting upper end portions of the first and second side frames to each other. In a state where the drum cartridge to which the developing cartridge has been attached is attached to the drawer and the drawer is in the inner position, the developing cartridge is positioned between the photosensitive drum and the upper frame, and the pressing member is positioned above the upper frame to press the upper frame downward.
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公开(公告)号：US20220350276A1
公开(公告)日：2022-11-03
申请号：US17865462
申请日：2022-07-15
发明人： Shougo Sato , Miho Ishida
摘要： In an image forming apparatus, a drum cartridge includes a photosensitive drum, a developing device, a drum cleaner, a waste toner tube, and a flange. The waste toner tube includes a first end portion communicating with the drum cleaner and a second end portion connected to the flange. The developing device includes a protruding portion facing the flange. The cushion member is located between the flange and the protruding portion. The cushion member allows a cartridge mounting part of the developing device to move with respect to the flange in a case where the developing device moves with respect to the photosensitive drum.
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公开(公告)号：US11294327B2
公开(公告)日：2022-04-05
申请号：US17094070
申请日：2020-11-10
发明人： Shougo Sato , Miho Ishida
摘要： An image forming apparatus includes a housing, a top cover having an opening, a process cartridge attachable to the housing, a toner cartridge attachable to the process cartridge, and an interlocking mechanism. The top cover is pivotally movable between a first position closing the opening and a second position opening the opening. In a state where the toner cartridge is attached to the process cartridge, the toner cartridge is pivotally movable between an attachment/detachment position where the toner cartridge is attachable to and detachable from the process cartridge; and a fixed position where the toner cartridge is fixed to the process cartridge. The interlocking mechanism is configured to pivotally move the toner cartridge to the attachment/detachment position when the top cover is moved to the second position, and to pivotally move the toner cartridge to the fixed position when the top cover is moved to the first position.
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