| 摘要 |
At the cleaning station of a photocopier, a cleaning system including a wetted cleaning roller of resilient closed-cell material and a sealing roller of resilient noncellular material past which cleaning and sealing rollers the imaging surface is sequentially moved. The cleaning roller contacts the imaging surface and is so driven that its surface adjacent to the imaging surface moves in a direction opposite thereto to provide a scrubbing action. The sealing roller contacts the imaging surface and is so driven that its surface adjacent to the imaging surface moves in the same direction as and at the same speed as the imaging surface to provide a dynamic seal. Preferably, the sealing roller has a surface smoothness of between 2 and 10 microinches. The sealing roller may be formed by casting polyurethane in a glass tube to form an extremely smooth outer surface which provides a highly effective seal with the imaging surface against the flow of cleaning liquid. In a preferred embodiment, the sealing roller engages the cleaning roller so as to be cleaned of any adhering toner particles by the action of the cleaning roller.
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