Developing device, image forming apparatus
    2.
    发明授权
    Developing device, image forming apparatus 有权
    显影装置,成像装置

    公开(公告)号:US09201349B2

    公开(公告)日:2015-12-01

    申请号:US14570989

    申请日:2014-12-15

    IPC分类号: G03G15/09 G03G15/08

    摘要: Developing device includes developing roller and magnetic roller. Developing roller includes aluminum oxide thin film and resin coat layer. Magnetic roller is disposed to face, without contact, outer circumferential surface of developing roller, and includes aluminum oxide thin film formed on outer circumferential surface of base body that is made of metal including aluminum. Magnetic roller forms toner layer on surface of developing roller via magnetic brush composed of toner and magnetic carrier. AC impedance Z1 is in range from 1.0×105Ω to 1.0×106Ω and surface roughness Ra of resin coat layer is in range from 0.057 μm to 0.280 μm, AC impedance Z1 being obtained when AC voltage at predetermined frequency is applied to between base body of magnetic roller and base body of developing roller in a state where the magnetic brush is formed on magnetic roller.

    摘要翻译: 显影装置包括显影辊和磁辊。 显影辊包括氧化铝薄膜和树脂涂层。 磁辊设置成与显影辊的外周面无接触地包围,并且包括形成在由包括铝的金属制成的基体的外周面上的氧化铝薄膜。 磁性辊通过由调色剂和磁性载体组成的磁刷在显影辊的表面上形成调色剂层。 交流阻抗Z1在1.0×105&OHgr范围内; 至1.0×106&OHgr; 并且树脂涂层的表面粗糙度Ra在0.057μm至0.280μm的范围内,当在磁性辊的基体和显影辊的基体之间施加预定频率的AC电压时获得的AC阻抗Z1是在磁性 刷子形成在磁辊上。

    Developing device, and image forming apparatus provided with the same
    5.
    发明授权
    Developing device, and image forming apparatus provided with the same 有权
    显影装置和具有该显影装置的图像形成装置

    公开(公告)号:US09285713B2

    公开(公告)日:2016-03-15

    申请号:US14680147

    申请日:2015-04-07

    IPC分类号: G03G15/09 G03G15/08

    摘要: A developing device supplies a developer to a photosensitive drum, which has a cylindrical shape, and is rotatable around an axis thereof for forming an electrostatic latent image on the circumferential surface thereof. The developing device is provided with a developing roller. The developing roller is disposed to face the photosensitive drum, and has a cylindrical shape. The developing roller is rotatable around an axis thereof for carrying a developer on the circumferential surface thereof. The developing roller is provided with a small diameter portion. The small diameter portion is a part of the circumferential surface of the developing roller. The small diameter portion extends from an axial end of the developing roller axially inward by a predetermined length, and has an outer diameter smaller than an axially middle portion of the developing roller.

    摘要翻译: 显影装置将显影剂供应到具有圆柱形形状的感光鼓,并且可以围绕其轴线旋转以在其圆周表面上形成静电潜像。 显影装置设有显影辊。 显影辊设置成面对感光鼓,并且具有圆柱形形状。 显影辊可绕其轴线转动,用于在其圆周表面上承载显影剂。 显影辊设置有小直径部分。 小直径部分是显影辊的圆周表面的一部分。 小直径部分从显影辊的轴向端部轴向向内延伸预定长度,并且其外径小于显影辊的轴向中间部分。

    Developing roller, developing device, and image forming apparatus including developing device
    7.
    发明授权
    Developing roller, developing device, and image forming apparatus including developing device 有权
    显影辊,显影装置和包括显影装置的图像形成装置

    公开(公告)号:US09122194B2

    公开(公告)日:2015-09-01

    申请号:US14572642

    申请日:2014-12-16

    IPC分类号: G03G15/09 G03G15/08

    摘要: A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. The roller main body includes a resin coat layer that is formed on an outer circumferential surface of a base body that is made of a metal including aluminum, the resin coat layer being made of a resin material and having electric conductivity. An AC impedance Z obtained from an application of an AC voltage at a frequency in a range from 0.05 Hz to 100 Hz is equal to or higher than 100Ω, and a phase angle θ satisfies a relationship of 0 rad

    摘要翻译: 显影辊包括辊状主体,其被设置为面对而不接触图像载体的外周表面。 辊主体包括树脂涂层,该树脂涂层形成在由包括铝的金属制成的基体的外周面上,该树脂涂层由树脂材料制成并具有导电性。 从0.05Hz至100Hz的范围内的AC电压的施加获得的交流阻抗Z等于或高于100Ω,相位角& 当功率因数为cos&Theta; = Za / Z时,满足0 rad <&amp; tas; <0.1 rad的关系。

    DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME
    8.
    发明申请
    DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME 有权
    开发设备和图像形成装置

    公开(公告)号:US20150293477A1

    公开(公告)日:2015-10-15

    申请号:US14680147

    申请日:2015-04-07

    IPC分类号: G03G15/08

    摘要: A developing device supplies a developer to a photosensitive drum, which has a cylindrical shape, and is rotatable around an axis thereof for forming an electrostatic latent image on the circumferential surface thereof. The developing device is provided with a developing roller. The developing roller is disposed to face the photosensitive drum, and has a cylindrical shape. The developing roller is rotatable around an axis thereof for carrying a developer on the circumferential surface thereof. The developing roller is provided with a small diameter portion. The small diameter portion is a part of the circumferential surface of the developing roller. The small diameter portion extends from an axial end of the developing roller axially inward by a predetermined length, and has an outer diameter smaller than an axially middle portion of the developing roller.

    摘要翻译: 显影装置将显影剂供应到具有圆柱形形状的感光鼓,并且可以围绕其轴线旋转以在其圆周表面上形成静电潜像。 显影装置设有显影辊。 显影辊设置成面对感光鼓,并且具有圆柱形形状。 显影辊可绕其轴线转动,用于在其圆周表面上承载显影剂。 显影辊设置有小直径部分。 小直径部分是显影辊的圆周表面的一部分。 小直径部分从显影辊的轴向端部轴向向内延伸预定长度,并且其外径小于显影辊的轴向中间部分。

    DEVELOPING DEVICE, IMAGE FORMING APPARATUS
    9.
    发明申请
    DEVELOPING DEVICE, IMAGE FORMING APPARATUS 有权
    开发设备,图像形成装置

    公开(公告)号:US20150177652A1

    公开(公告)日:2015-06-25

    申请号:US14570989

    申请日:2014-12-15

    IPC分类号: G03G15/09

    摘要: Developing device includes developing roller and magnetic roller. Developing roller includes aluminum oxide thin film and resin coat layer. Magnetic roller is disposed to face, without contact, outer circumferential surface of developing roller, and includes aluminum oxide thin film formed on outer circumferential surface of base body that is made of metal including aluminum. Magnetic roller forms toner layer on surface of developing roller via magnetic brush composed of toner and magnetic carrier. AC impedance Z1 is in range from 1.0×105Ω to 1.0×106Ω and surface roughness Ra of resin coat layer is in range from 0.057 μm to 0.280 μm, AC impedance Z1 being obtained when AC voltage at predetermined frequency is applied to between base body of magnetic roller and base body of developing roller in a state where the magnetic brush is formed on magnetic roller.

    摘要翻译: 显影装置包括显影辊和磁辊。 显影辊包括氧化铝薄膜和树脂涂层。 磁辊设置成与显影辊的外周面无接触地包围,并且包括形成在由包括铝的金属制成的基体的外周面上的氧化铝薄膜。 磁性辊通过由调色剂和磁性载体组成的磁刷在显影辊的表面上形成调色剂层。 交流阻抗Z1在1.0×105&OHgr范围内; 至1.0×106&OHgr; 并且树脂涂层的表面粗糙度Ra在0.057μm至0.280μm的范围内,当在磁性辊的基体和显影辊的基体之间施加预定频率的AC电压时获得的AC阻抗Z1是在磁性 刷子形成在磁辊上。