| 摘要 |
A sheet loader (700, 500) includes a sheet loading part (701, 53) having a loading face (710, 53a) loading a sheet (P) and a sheet length detector (702, 401) to detect a length of the sheet (P) by obtaining information whether the loading face (710, 53a) either contacts or approaches the sheet (P) disposed facing the loading face (710, 53a) at a given position on the loading face (710, 53a) in a sheet conveying direction of the sheet loading part (701, 53). The sheet length detector (702, 401) includes multiple projections (702a, 702b) retreatably extending outward beyond the loading face (710, 53a), and a projection retreating detector (402, 18) detecting whether the multiple projections (702a, 702b) are retreated under the loading face (710, 53a). At least one of the multiple projections (702a, 702b) is closer to an upstream end of the sheet loading part (701, 53) than the other. |
