公开(公告)号：US20240176262A1

公开(公告)日：2024-05-30

申请号：US18517655

申请日：2023-11-22

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu SHIMIZU ,  Kenichi TAMAKI ,  Hiroshi YAMAZAKI ,  Junichi NAKAGAWA ,  Takuji WATANABE

IPC: G03G15/08

CPC classification number: G03G15/0898 ,  G03G15/0891 ,  G03G2215/085

Abstract: The developing device includes a development container, a developer carrier, and a toner trapping mechanism. The development container includes a first conveyance chamber and a second conveyance chamber placed in parallel juxtaposition and communicated with each other at their longitudinal both end portions, and the development container contains a toner-containing developer to be fed to an image carrier. The toner trapping mechanism includes a duct, an air inlet port, a trapping filter, and a fan. The duct is connected to the second conveyance chamber, and allows air present in the second conveyance chamber to flow therethrough. The development container has an air vent opened in the first conveyance chamber and communicated with outside of the development container.

公开(公告)号：US20130315628A1

公开(公告)日：2013-11-28

申请号：US13897200

申请日：2013-05-17

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Hiroshi YAMAZAKI ,  Eiji NIMURA ,  Kuniaki NAKANO ,  Koji KURAMASHI ,  Yoshihiro YAMAGISHI

IPC: G03G15/08

CPC classification number: G03G15/0839 ,  G03G15/0877 ,  G03G15/0893

Abstract: A conveyance device includes a housing, a formation member, and a detection section. The housing has a first conveyance path, a second conveyance path, and a first communication path. The first and second conveyance paths each are a conveyance path for conveying a developer. The first communication path allows a first end portion of the first conveyance path and a first end portion of the second conveyance path to be in communication with each other via a communication surface. The communication surface has a first region and a second region. The formation member forms the second region of the communication surface so that a height of the second region from a bottom portion of the first communication path is lower than a height of the first region from the bottom portion of the first communication path. The detection section detects the amount of the developer.

Abstract translation: 输送装置包括壳体，形成构件和检测部。 壳体具有第一输送路径，第二输送路径和第一连通路径。 第一和第二输送路径各自是用于输送显影剂的输送路径。 第一连通路径允许第一输送路径的第一端部和第二输送路径的第一端部部分经由连通表面彼此连通。 通信表面具有第一区域和第二区域。 形成构件形成连通表面的第二区域，使得第二区域从第一连通路径的底部的高度低于第一区域的距第一连通路径的底部的高度。 检测部检测显影剂的量。

公开(公告)号：US20230408974A1

公开(公告)日：2023-12-21

申请号：US18331704

申请日：2023-06-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takuji WATANABE ,  Junichi NAKAGAWA ,  Kenichi TAMAKI ,  Hiroshi YAMAZAKI ,  Tamotsu SHIMIZU

IPC: G03G21/20

CPC classification number: G03G21/206

Abstract: An image forming apparatus includes a development device, and a control unit that controls the development device. The development device includes a toner collection mechanism having a duct, a filter, and an exhaust fan. The duct is connected to a conveyance chamber of the development container and allows air in the conveyance chamber to flow through. The filter is disposed at a connecting part between the duct and the conveyance chamber, and collects toner flowing into the duct from the conveyance chamber. The exhaust fan makes the air in the conveyance chamber flow to the outside via the duct. The control unit changes rotational frequency or operation frequency of the exhaust fan based on current detected by a current detection unit at non-image forming time.

公开(公告)号：US20230408973A1

公开(公告)日：2023-12-21

申请号：US18331671

申请日：2023-06-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Junichi NAKAGAWA ,  Tamotsu SHIMIZU ,  Hiroshi YAMAZAKI ,  Kenichi TAMAKI ,  Takuji WATANABE

IPC: G03G21/20 ,  G03G15/09 ,  G03G21/10

CPC classification number: G03G21/206 ,  G03G15/09 ,  G03G21/10

Abstract: An image forming apparatus includes an image carrier, a cleaning unit, a development device, and a control unit. The development device includes a toner collection mechanism having a developer carrier and a filter. The control unit is capable of executing a scattered toner recovery mode at non-image forming time, in which the filter is vibrated, a potential difference is generated in the direction for the toner to move from the developer carrier to the image carrier, the developer carrier is rotated in a reverse direction to that at image forming time, and the image carrier is rotated in the same direction as that at the image forming time, so that scattered toner, which has dropped from the filter and adhered to the developer carrier, is recovered by the cleaning unit via the image carrier.

公开(公告)号：US20240176270A1

公开(公告)日：2024-05-30

申请号：US18520070

申请日：2023-11-27

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu SHIMIZU ,  Hiroshi YAMAZAKI ,  Kenichi TAMAKI ,  Junichi NAKAGAWA ,  Takuji WATANABE

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

CPC classification number: G03G15/50 ,  G03G15/0887 ,  G03G21/206

Abstract: The developing device includes a development container, a developer carrier, and a toner trapping mechanism. The development container includes a first conveyance chamber and a second conveyance chamber placed in parallel juxtaposition and communicated with each other at their longitudinal both end portions, and the development container contains a toner-containing developer to be fed to an image carrier. The toner trapping mechanism includes a duct, an air inlet port, an air exhaust port, a filter, and a fan. The air inlet port is placed at a connecting portion between the duct and the second conveyance chamber, and opened along the longitudinal direction of the second conveyance chamber so as to allow air present in the second conveyance chamber to flow into the duct. The air exhaust port is placed downstream of the air inlet port as viewed in a developer conveyance direction of the second conveyance chamber.

公开(公告)号：US20230408976A1

公开(公告)日：2023-12-21

申请号：US18332440

申请日：2023-06-09

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi TAMAKI ,  Hiroshi YAMAZAKI ,  Junichi NAKAGAWA ,  Takuji WATANABE ,  Tamotsu SHIMIZU

IPC: G03G21/20 ,  G03G15/08

CPC classification number: G03G21/206 ,  G03G15/0848

Abstract: Provided is an image forming apparatus in which, while image formation is prevented from being performed, scattered toner that has dropped from a filter and adhered to an outer peripheral surface of a developer carrying member is recovered. A fixed magnet of the developer carrying member has a first pole that is arranged to face the filter, and a second pole and a third pole on a downstream side relative to the first pole. The first pole and the second pole have polarities opposite to each other, and the second pole and the third pole have a same polarity. A length of a gap between the developing container and an area where the developing sleeve faces the second pole among areas of the developing sleeve is smaller than a length between the developing sleeve and the filter.

公开(公告)号：US20230408964A1

公开(公告)日：2023-12-21

申请号：US18332143

申请日：2023-06-09

Applicant: KYOCERA Document Solutions Inc.

Inventor： Junichi NAKAGAWA ,  Tamotsu SHIMIZU ,  Hiroshi YAMAZAKI ,  Kenichi TAMAKI ,  Takuji WATANABE

IPC: G03G21/00 ,  G03G15/08 ,  G03G7/00

CPC classification number: G03G21/0052 ,  G03G15/081 ,  G03G15/0889 ,  G03G15/0808 ,  G03G7/0013 ,  G03G2215/085 ,  G03G2221/0021

Abstract: Provided is an image forming apparatus in which, while image formation is prevented from being performed, scattered toner that has dropped from a filter and adhered to an outer peripheral surface of a developer carrying member is recovered by a cleaning unit through intermediation of an image bearing member. An absolute value of a perpendicular-magnetic-force gradient of a fixed magnet of the developer carrying member is 4.0 mT/° or less at a position where the fixed magnet faces a central portion of the filter in a rotation direction of a developing sleeve.

公开(公告)号：US20150078786A1

公开(公告)日：2015-03-19

申请号：US14330999

申请日：2014-07-14

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi TAMAKI ,  Hiroshi YAMAZAKI

IPC: G03G15/08

CPC classification number: G03G15/0889 ,  G03G15/0891 ,  G03G15/0893

Abstract: A developing device includes: a developer container having first and second transport passages, for containing developer; a developer carrier for carrying, on its surface, developer inside the second transport passage; a first stirring/transporting member having a rotary shaft and a transport blade formed on its circumferential surface, for stirring/transporting developer inside the first transport passage; a second stirring/transporting member for stirring/transporting developer inside the second transport passage in a direction opposite to the first stirring/transporting member; a first developer passing portion for delivering developer from the first to the second transport passage; and a second developer passing portion for delivering developer from the second to the first transport passage. In a part of the first stirring/transporting member facing the first developer passing portion, a paddle portion is formed which is devoid of the rotary shaft and which has a plurality of first ribs parallel to the rotary shaft.

Abstract translation: 显影装置包括：具有用于容纳显影剂的第一和第二输送通道的显影剂容器; 用于在其表面上承载第二输送通道内的显影剂的显影剂载体; 第一搅拌/输送构件，其具有旋转轴和形成在其圆周表面上的输送叶片，用于搅拌/输送第一输送通道内的显影剂; 第二搅拌/输送构件，用于在与第一搅拌/输送构件相反的方向上搅拌/输送第二输送通道内的显影剂; 用于将显影剂从第一输送通道输送到第二输送通道的第一显影剂通过部分; 以及用于将显影剂从第二输送通道输送到第二输送通道的第二显影剂通过部分。 在面向第一显影剂通过部分的第一搅拌/输送构件的一部分中，形成没有旋转轴并且具有平行于旋转轴的多个第一肋的桨部。

公开(公告)号：US20240176289A1

公开(公告)日：2024-05-30

申请号：US18517567

申请日：2023-11-22

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi TAMAKI ,  Tamotsu SHIMIZU ,  Hiroshi YAMAZAKI ,  Junichi NAKAGAWA ,  Takuji WATANABE

IPC: G03G21/20 ,  G03G15/09

CPC classification number: G03G21/206 ,  G03G15/0921

Abstract: A developing device includes a developer container and a developer carrying member. The developer carrying member includes a shaft, a sleeve that rotates while carrying toner on its outer circumferential face, and a magnet that extends along the axis of the developer carrying member. The developer container includes a duct, an intake port which opens above the developer carrying member and through which the inside of the developer container and the inside of the duct communicate with each other, and a first filter that covers the intake port. The edges of the first filter at one side and at the other side in the axial direction of the developer carrying member are both located within a range opposite the magnet as seen from the direction perpendicular to the axial direction.

公开(公告)号：US20240176271A1

公开(公告)日：2024-05-30

申请号：US18521156

申请日：2023-11-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu SHIMIZU ,  Hiroshi YAMAZAKI ,  Kenichi TAMAKI ,  Junichi NAKAGAWA ,  Takuji WATANABE

IPC: G03G15/00 ,  G03G15/095 ,  G03G21/20

CPC classification number: G03G15/50 ,  G03G15/095 ,  G03G21/206

Abstract: The image forming apparatus includes a developing part and a vibration generating part. The vibration generating part vibrates a filter provided in the developing part. The developing part includes a development container, a developer carrier, and a toner trapping mechanism. The development container includes a first conveyance chamber and a second conveyance chamber placed in parallel juxtaposition. The toner trapping mechanism has a duct, an air inlet port, an air exhaust port, and a filter. The air inlet port is opened along the longitudinal direction of the second conveyance chamber so as to allow air present in the second conveyance chamber to flow into the duct. The vibration generating part is placed outside the developing part so as to be opposed to the development container and positioned on a downstream side in a developer conveyance direction of the second conveyance chamber.