| 摘要 |
A sheet material detection apparatus detects passage of a sheet material over a sheet material transportation path. The apparatus includes: a lever member that is exposed over the transportation path and turns from a reference position when the sheet material is brought into contact therewith; a detecting section that detects the turn of the lever member; a holder that supports the lever member in such a manner that the lever member can turn freely toward both sides in a direction of the transportation of the sheet material at a guide-facing-surface side, the guide facing surface being a surface facing a guide surface along which the sheet material is guided over the transportation path; and a counter weight with which the turning lever member is brought into contact, the counter weight turning due to contact with the lever member, the counter weight being thereafter brought into contact with the holder.
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