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1. 发明授权

US11221571B2 Developing device and image forming apparatus 有权
公开(公告)号：US11221571B2
公开(公告)日：2022-01-11
申请号：US16839272
申请日：2020-04-03
申请人： FUJIFILM Business Innovation Corp.
发明人： Taichiro Okuno
IPC分类号： G03G15/08 , G03G15/09
摘要： A developing device includes a developing housing, a developing unit, and a transport unit. The developing housing includes a container chamber containing a developer. The developing unit rotates around a first rotation axis while carrying the developer on a surface thereof to deliver the developer. At least a partial region of the developing unit is exposed from the developing housing in a developing region below the first rotation axis such that the developing unit faces an image carrier. The developing unit develops an electrostatic latent image. The transport unit is disposed in the container chamber. The transport unit rotates around a second rotation axis to transport the developer. A part of an inner wall surface of the container chamber on a developer lifting side in which the surface of the developing unit moves toward the transport unit is located between a first plane and a second plane.

2. 发明授权

US11561488B2 Powder transport device, powder container, powder supply device, and powder utilization apparatus 有权
公开(公告)号：US11561488B2
公开(公告)日：2023-01-24
申请号：US17392798
申请日：2021-08-03
申请人： FUJIFILM Business Innovation Corp.
发明人： Taichiro Okuno
IPC分类号： G03G15/08
摘要： A powder transport device includes a falling passage unit having an inclined surface that is inclined so as to narrow an interior space, through which powder falls, in a lower region of the interior space; a transport passage unit that is connected to a lower end of the falling passage unit and that has a passage space that extends in a direction in which the powder is transported; a transport member that rotates in the passage space of the transport passage unit to transport the powder in one direction, which is a transporting direction; and an elastic sheet that is disposed to cover a portion of the falling passage unit including the inclined surface, the elastic sheet including an upper end portion that is fixed and a lower end that serves as a free end and faces the transport member. The elastic sheet includes a projection that extends and projects from the lower end at a position near an upstream end of the lower end in the transporting direction in which the powder is transported by the transport member. The inclined surface has a protrusion that protrudes such that an upstream edge portion of the elastic sheet in the transporting direction is maintained separated from the inclined surface. A contact body is disposed in the passage space of the transport passage unit, the contact body repeating a movement of coming into contact with the projection to raise a portion of the elastic sheet and then moving away from the projection.

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