| 摘要 |
PCT No. PCT/GB96/01290 Sec. 371 Date Dec. 2, 1997 Sec. 102(e) Date Dec. 2, 1997 PCT Filed May 31, 1996 PCT Pub. No. WO96/38306 PCT Pub. Date Dec. 5, 1996A contact cleaning machine for removing particulates and other undesirable debris from the surfaces of articles moving along a curved path under the cleaning machine, without disturbing the orientation of the articles which cannot be clamped against movement. Cleaning is performed by a roller (22) which is mounted in the machine to roll across the tops of articles as they pass underneath. The peripheral surface (28) of the roller is coated with a tacky adhesive to lift off the undesirable particles. To avoid the roller applying differential forces to the article, the roller is made conical and convergent towards the axis of curvature of the path followed by the article. The avoidance of differential forces on the unclamped articles eliminates any tendency for the cleaning roller to turn the articles. To prevent build-up of dirt on the cleaning roller, it is backed up by a further roller with a peripheral surface that has a greater level of adhesive tackiness, such that particulates transfer from the cleaning roller to the backup roller. The contact cleaning machine is applicable to cleaning the surfaces of compact discs having labels printed on them in a multi-stage indexing turret printing machine.
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