| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet cleaning machine which can prevent a string body from tangling in shaft parts of a conveying roller and a brush roller or the like.SOLUTION: When a guide tool 53 is guided by a discharge guide 41 and goes out in an outer side region in an immediate vicinity of a discharge port 39, light irradiated from a light emitting part 43 is blocked and the light is not detected by a light receiving part 45. This detection information is transmitted to a controller 21. Thereby, a motor 20 is switched to rotation in a reverse rotation direction, and a brush roller 19 rotates in the reverse rotation direction which generates biasing force for sending a sheet 47 to an upstream side. When the brush roller 19 rotates in the reverse rotation direction, a string 51 is biased so as to extend to the upstream side. Therefore, the string 51 can be prevented from flying out to a side part or the like of the sheet 47 and tangling in shaft parts 15b, 17b, 19b. |
