公开(公告)号：US20210088938A1

公开(公告)日：2021-03-25

申请号：US17016389

申请日：2020-09-10

申请人： Tatsuya OHHIRA ,  Koichi YAMAZAKI ,  Yuki OSHIKAWA ,  Takahiro ADACHI

发明人： Tatsuya OHHIRA ,  Koichi YAMAZAKI ,  Yuki OSHIKAWA ,  Takahiro ADACHI

IPC分类号： G03G15/08

摘要： A developing device includes a developer bearer and a stirring conveyor. The stirring conveyor includes a first conveying chamber including a conveying member and a second conveying chamber to receive the developer from an end of the first conveying chamber. The conveying member includes a forward winding blade, a reverse winding blade, and a shaft portion on which the forward winding blade and the reverse winding blade are mounted with a space therebetween. A circumferential phase of the conveying member at a start position of the reverse winding blade is different from a circumferential phase of the conveying member at an end position of the forward winding blade. The conveying member is disposed in the first conveying chamber so that the space is opposite a portion at which the second conveying chamber receives the developer from the end of the first conveying chamber.

公开(公告)号：US20200292963A1

公开(公告)日：2020-09-17

申请号：US16799833

申请日：2020-02-25

申请人： Takahiro ADACHI ,  Koichi YAMAZAKI ,  Hideo YOSHIZAWA ,  Tatsuya OHHIRA

发明人： Takahiro ADACHI ,  Koichi YAMAZAKI ,  Hideo YOSHIZAWA ,  Tatsuya OHHIRA

IPC分类号： G03G15/08

摘要： A toner container includes a cylindrical container body having a head with an opening in the head, a cap into which the head of the container body is inserted, and a sheet member attached inside the cap. The cylindrical container body rotates around a rotation axis extending in a longitudinal direction of the container body to transport toner contained in the container body toward the opening. The cap has a toner outlet through which the toner discharged from the opening is discharged outside the toner container. The sheet member includes a first elastic-deformation portion that is elastically deformable and located near the toner outlet, and a second elastic-deformation portion that is elastically deformable and located in the container body and near the opening.

公开(公告)号：US20200264538A1

公开(公告)日：2020-08-20

申请号：US16775727

申请日：2020-01-29

申请人： Tatsuya OHHIRA ,  Koichi Yamazaki ,  Hideo Yoshizawa ,  Takahiro Adachi

发明人： Tatsuya OHHIRA ,  Koichi Yamazaki ,  Hideo Yoshizawa ,  Takahiro Adachi

IPC分类号： G03G15/08 ,  G03G21/18

摘要： A developer conveyor includes a shaft; a first blade helically wound around the shaft in a first direction, a second blade disposed away from an end of the first blade with a gap in a longitudinal axial direction of the developer conveyor and helically wound around the shaft in a second direction opposite the first direction, and a third blade helically wound around the shaft in the first direction at least at a position where the gap is formed.

公开(公告)号：US20180136586A1

公开(公告)日：2018-05-17

申请号：US15696237

申请日：2017-09-06

申请人： Yuuki TSUCHIYA ,  Masayuki YAMANE ,  Keiichi YOSHIDA ,  Atsushi KUROKAWA ,  Toshiki HAYASHI ,  Tatsuya OHHIRA

发明人： Yuuki TSUCHIYA ,  Masayuki YAMANE ,  Keiichi YOSHIDA ,  Atsushi KUROKAWA ,  Toshiki HAYASHI ,  Tatsuya OHHIRA

IPC分类号： G03G15/08

CPC分类号： G03G15/0893 ,  G03G15/0881 ,  G03G15/0898 ,  G03G21/1647 ,  G03G2215/0838

摘要： A developing device includes a casing to contain developer, a developer bearer, an upper and lower developer conveyors to convey the developer to one side in an axial direction of rotation shafts thereof, a communicating portion disposed on a first end side on which an input gear is disposed, to fall the developer from the upper developer conveyor to the lower developer conveyor, bearings to receive end portions the upper and lower developer conveyors, and first and second end seals to seal gaps in the bearings on the upper and lower developer conveyors, respectively. The first end seals and the second end are disposed on the first end side and a second end side, respectively. A sliding friction between the rotation shaft and at least one of the first end seals is smaller than a sliding friction between the rotation shaft and the second end seal.

公开(公告)号：US20170090342A1

公开(公告)日：2017-03-30

申请号：US15282172

申请日：2016-09-30

申请人： Tatsuya OHHIRA ,  Atsushi Kurokawa ,  Masayuki Yamane ,  Keiichi Yoshida ,  Toshiki Hayashi

发明人： Tatsuya OHHIRA ,  Atsushi Kurokawa ,  Masayuki Yamane ,  Keiichi Yoshida ,  Toshiki Hayashi ,  Shunji Katoh

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0812 ,  G03G15/09 ,  G03G15/0921 ,  G03G2215/0132 ,  G03G2215/0838

摘要： A developing device includes a developer bearer, a magnetic field generator, a easing having an opening, a developer conveyor to rotate inside a developer containing compartment below the developer bearer, and a developer regulator. A side wall of the casing defines a bottom end of the opening, and the developer regulator is disposed on the side wall. The side wall includes an upper end face facing the developer bearer below an axis of the developer bearer and a curved inner face along an orbit of rotation of the developer conveyor, extending from below the developer conveyor toward the upper end face. On a virtual plane perpendicular to the axis of the developer bearer, an intersection between a tangent line to an upper end of the curved inner face and the surface of the developer bearer is in a range from a tangential magnetic-flux peak and a closest approach point.

公开(公告)号：US20170293257A1

公开(公告)日：2017-10-12

申请号：US15467582

申请日：2017-03-23

申请人： Tatsuya OHHIRA ,  Masayuki YAMANE ,  Keiichi YOSHIDA ,  Atsushi KUROKAWA ,  Toshiki HAYASHI ,  Yuuki TSUCHIYA

发明人： Tatsuya OHHIRA ,  Masayuki YAMANE ,  Keiichi YOSHIDA ,  Atsushi KUROKAWA ,  Toshiki HAYASHI ,  Yuuki TSUCHIYA

IPC分类号： G03G15/08

CPC分类号： G03G21/1814 ,  G03G15/0889 ,  G03G15/0891 ,  G03G15/0893 ,  G03G2215/0822

摘要： A developing device includes a developer bearer, a casing defining an upper compartment to contain the developer and a lower compartment disposed lower than the upper compartment, to contain the developer, and a first conveyor and a second conveyor disposed in the upper compartment and the lower compartment, respectively, to convey the developer in a longitudinal direction of the developer bearer and circulate the developer between the upper compartment and the lower compartment through a first communicating opening, through which the developer is conveyed upward, and a second communicating opening. A developer-lifting range of the upper compartment, which opposes the first communicating opening, is larger in volume than a developer-lifting range of the lower compartment. One of the upper compartment and the lower compartment is disposed adjacent to the developer bearer to supply the developer to the developer bearer.