| 摘要 |
PURPOSE: An auto shutter is provided to prevent the generation of precipitate in advance by cleaning a liquid chemical remaining on a roller. CONSTITUTION: A rotating shaft(154) is formed in the longitudinal direction of a base plat(150) and rotates the base plate and a shutter layer(152). The roller is separately rotated from the rotary shaft. A driving water block is combined with the base plate to cover the roller exposed to the hole of the base plat. The driving water block includes a water bath holding the driving water contacting with a part of the roller. A driving water supply pipe(130) supplies driving water to the driving water block. |
