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    • 2. 发明授权
    • Image forming apparatus and toner concentration sensor
    • 图像形成装置和调色剂浓度传感器
    • US08521047B2
    • 2013-08-27
    • US13220927
    • 2011-08-30
    • Satoru SasakiYoshiki KatayamaHirotada SekiNatsuyo HigashiShigetaka Kato
    • Satoru SasakiYoshiki KatayamaHirotada SekiNatsuyo HigashiShigetaka Kato
    • G03G15/00
    • G03G15/5058G03G2215/00063
    • An image forming apparatus includes a toner carrier, a toner image forming unit, and a toner concentration sensor. The toner carrier includes a transparent film. The toner image forming unit forms a toner image onto the toner carrier. The toner concentration sensor senses the concentration of toner on the toner carrier. The toner concentration sensor includes first and second light emitting elements and a light receiving element. The light emitting elements each radiate light directly or indirectly to the toner carrier. The light receiving element receives reflecting light originating from the light emitting elements. The first light emitting element radiates light having a wavelength of a predetermined reflectance resulting from direct radiation to the toner carrier. The second light emitting element radiates light having a wavelength that causes a lower reflectance resulting from direct radiation to the toner carrier than a reflectance resulting from radiation to the toner.
    • 图像形成装置包括调色剂载体,调色剂图像形成单元和调色剂浓度传感器。 调色剂载体包括透明膜。 调色剂图像形成单元在调色剂载体上形成调色剂图像。 调色剂浓度传感器感测调色剂载体上的调色剂浓度。 调色剂浓度传感器包括第一和第二发光元件和光接收元件。 发光元件各自直接或间接地将光直接照射到调色剂载体上。 光接收元件接收来自发光元件的反射光。 第一发光元件将具有由直接辐射产生的预定反射率的波长的光照射到调色剂载体。 第二发光元件将具有波长的光照射到对调色剂载体的直接辐射产生的较低的反射率,而不是由对辐射到调色剂的反射率。
    • 3. 发明申请
    • IMAGE FORMING APPARATUS AND TONER CONCENTRATION SENSOR
    • 图像形成装置和调色剂浓度传感器
    • US20120051770A1
    • 2012-03-01
    • US13220927
    • 2011-08-30
    • Satoru SasakiYoshiki KatayamaHirotada SekiNatsuyo HigashiShigetaka Kato
    • Satoru SasakiYoshiki KatayamaHirotada SekiNatsuyo HigashiShigetaka Kato
    • G03G15/00
    • G03G15/5058G03G2215/00063
    • An image forming apparatus includes a toner carrier, a toner image forming unit, and a toner concentration sensor. The toner carrier includes a transparent film. The toner image forming unit forms a toner image onto the toner carrier. The toner concentration sensor senses the concentration of toner on the toner carrier. The toner concentration sensor includes first and second light emitting elements and a light receiving element. The light emitting elements each radiate light directly or indirectly to the toner carrier. The light receiving element receives reflecting light originating from the light emitting elements. The first light emitting element radiates light having a wavelength of a predetermined reflectance resulting from direct radiation to the toner carrier. The second light emitting element radiates light having a wavelength that causes a lower reflectance resulting from direct radiation to the toner carrier than a reflectance resulting from radiation to the toner.
    • 图像形成装置包括调色剂载体,调色剂图像形成单元和调色剂浓度传感器。 调色剂载体包括透明膜。 调色剂图像形成单元在调色剂载体上形成调色剂图像。 调色剂浓度传感器感测调色剂载体上的调色剂浓度。 调色剂浓度传感器包括第一和第二发光元件和光接收元件。 发光元件各自直接或间接地将光直接照射到调色剂载体上。 光接收元件接收来自发光元件的反射光。 第一发光元件将具有由直接辐射产生的预定反射率的波长的光照射到调色剂载体。 第二发光元件将具有波长的光照射到对调色剂载体的直接辐射产生的较低的反射率,而不是由对辐射到调色剂的反射率。
    • 7. 发明申请
    • Image forming apparatus
    • 图像形成装置
    • US20060146120A1
    • 2006-07-06
    • US11222794
    • 2005-09-12
    • Norio JoichiAtsushi TakahashiYoubao PengYoshihito SasamotoYoshiki KatayamaTakashi Nara
    • Norio JoichiAtsushi TakahashiYoubao PengYoshihito SasamotoYoshiki KatayamaTakashi Nara
    • B41J2/45
    • G03G15/326B41J2/45G03G15/04054
    • An image forming apparatus includes a photoreceptor member; a LED head that includes a plurality of light emitting diodes arrayed in a line along a rotating axial direction of said photoreceptor member and that is modulated in response to image signals, so as to expose said photoreceptor member while said photoreceptor member is rotating; a deviation detecting sensor to detect deviations on a circumferential surface of said photoreceptor member; a filter to extract low frequency components including a rotational frequency component of said photoreceptor member from deviation signals detected by said deviation detecting sensor, so as to acquire deviation information with respect to said circumferential surface of said photoreceptor member; a driving section to move said LED head back and forth against said circumferential surface of said photoreceptor member; and a position controlling section to control said driving section, based on said deviation information acquired by said filter, so as to keep a distance between said LED head and said circumferential surface of said photoreceptor member constant.
    • 图像形成装置包括感光体部件; LED头,其包括沿着所述感光体的旋转轴向排成一行的多个发光二极管,并且响应于图像信号进行调制,以便在所述感光体旋转的同时露出所述感光体; 偏移检测传感器,用于检测所述感光体的周面上的偏差; 滤波器,用于从由所述偏差检测传感器检测的偏差信号中提取包括所述感光体的旋转频率分量的低频分量,以便获得关于所述感光体的所述圆周表面的偏差信息; 驱动部,使所述LED头前后抵靠所述感光体的所述周面移动; 以及位置控制部分,用于基于由所述滤光器获取的所述偏差信息来控制所述驱动部分,以便保持所述LED头与所述感光体的所述圆周表面之间的距离恒定。