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    • 4. 发明授权
    • Apparatus for electrically inspecting the surface of a drum
    • 用于电气检查滚筒表面的装置
    • US5119030A
    • 1992-06-02
    • US526063
    • 1990-05-18
    • Peter R. BossardKevin D. BrownCharles Hagen
    • Peter R. BossardKevin D. BrownCharles Hagen
    • G01N27/61G01R29/14
    • G01R29/14G01N27/61
    • Apparatus for determining the physical uniformity of a charged drum surface wherein current signals are induced in sensing electrodes in response to variation in drum surface charge. The sensing electrodes are on a detector assembly which is movable toward the drum for inspection of the surface and movable away from the drum after inspection when the drum is to be ejected from the apparatus. The detector assembly is movable through another degree of freedom to accommodate irregularities in drum geometry encountered during rotation thereof. The detector assembly also is provided with structure for maintaining a predetermined spacing of the sensing electrodes from the drum surface during relative movement therebetween. The drum is received, held, and rotated by co-operation between a drum retention assembly and a drum clamping mechanism. The retention assembly includes an arrangement of retainer arms which contact the drum inner surface and which are collapsed in response to forcible engagement of the drum by the drum clamping mechanism to allow rotation of the drum. The drum clamping mechanism is adjustable in two directions to accommodate various drum geometries, and it is movable away from the drum after inspection when the drum is to be ejected. An eject mechanism operatively associated with the drum retention assembly moves an inspected drum out of the apparatus to allow entry of a next drum to be inspected.
    • 用于确定充电的鼓表面的物理均匀性的装置,其中响应于鼓表面电荷的变化在感测电极中感应出电流信号。 感测电极位于检测器组件上,该检测器组件可以朝着滚筒移动以检查表面,并且当滚筒从该装置中被排出时,在检查之后可移动离开滚筒。 检测器组件可移动通过另一自由度以适应在其旋转期间遇到的鼓形几何形状。 检测器组件还具有用于在它们之间的相对运动期间保持感测电极与鼓表面的预定间隔的结构。 鼓被容纳,保持并通过鼓保持组件和鼓夹紧机构之间的协作旋转。 保持组件包括保持臂的布置,该保持臂与滚筒内表面接触并且响应于鼓由夹紧机构强制地接合滚筒而折叠以允许滚筒旋转。 鼓夹紧机构可以在两个方向上调节以适应各种滚筒几何形状,并且当滚筒被弹出时,其可以在检查之后离开滚筒。 与鼓保持组件可操作地相关联的弹出机构将被检查的滚筒移出设备,以允许进入待检查的下一个滚筒。