Developing device having inductance sensor

    公开(公告)号:US12124191B2

    公开(公告)日:2024-10-22

    申请号:US18139466

    申请日:2023-04-26

    Inventor: Masashi Wakisaka

    Abstract: A developing device includes a developer bearing member, a developing container which accommodates developer, a conveying screw which conveys the developer accommodated in the developing container, and an inductance sensor which includes a detecting portion which detects magnetic permeability of the developer accommodated in the developing container. The conveying screw includes a rotary shaft, a blade which is spirally formed on an outer circumference of the rotary shaft, and a rib formed to protrude outwardly from the outer circumference of the rotary shaft. The rib is disposed opposite the detection portion with respect to a conveying direction of the conveying screw and is provided with a magnet, with magnetic flux density of the magnet being in the range of 20 mT to 60 mT.

    IMAGE FORMING APPARATUS
    9.
    发明申请

    公开(公告)号:US20170139347A1

    公开(公告)日:2017-05-18

    申请号:US15351635

    申请日:2016-11-15

    Inventor: Takahiro Nakase

    Abstract: An image forming apparatus includes an image bearing drum; a developing device including a developing container accommodating a one component developer including toner, and a developer detector for detecting the developer in said developing container; a developer supply portion for supplying the developer into said developing container in accordance with a detection result of said detector; and a controller for controlling said developer supply device, in which a developer amount in said developing container when an image ratio of images formed by a predetermined number of image formations is a first image ratio is larger than the developer amount in said developing container when the image ratio of the images formed by a predetermined image formations is a second image ratio which is smaller than the first image ratio.

    REPLACEABLE UNIT FOR AN IMAGE FORMING DEVICE HAVING MAGNETS OF VARYING ANGULAR OFFSET FOR TONER LEVEL SENSING
    10.
    发明申请
    REPLACEABLE UNIT FOR AN IMAGE FORMING DEVICE HAVING MAGNETS OF VARYING ANGULAR OFFSET FOR TONER LEVEL SENSING 有权
    用于图像形成装置的可替换单元具有用于调色剂水平传感的变化角度偏移的磁体

    公开(公告)号:US20170052478A1

    公开(公告)日:2017-02-23

    申请号:US15341216

    申请日:2016-11-02

    Abstract: A replaceable unit for an electrophotographic image forming device according to one example embodiment includes a housing having a reservoir for storing toner. A rotatable shaft is positioned within the reservoir and has an axis of rotation. A first magnet and a second magnet are connected to the shaft and rotatable around the axis of rotation in response to rotation of the shaft. The first magnet and the second magnet are detectable by a magnetic sensor when the replaceable unit is installed in the image forming device. A polarity of the first magnet is oriented opposite a polarity of the second magnet relative to the shaft. An amount of angular offset between the first magnet and the second magnet varies depending on an amount of toner in the reservoir.

    Abstract translation: 根据一个示例实施例的用于电子照相图像形成装置的可替换单元包括具有用于存储调色剂的储存器的壳体。 旋转轴定位在储存器内并具有旋转轴。 第一磁体和第二磁体连接到轴并响应于轴的旋转而围绕旋转轴线旋转。 当可更换单元安装在图像形成装置中时,第一磁体和第二磁体可由磁传感器检测。 第一磁体的极性相对于第二磁体的极性相对于轴定向。 第一磁体和第二磁体之间的角度偏移量根据储存器中的调色剂量而变化。

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