| 摘要 |
A sheet punch device including a punch member having a rotatable punch and a die pair that punches a hole in a sheet, a driving member that drives and rotates the punch member to punch a hole in a conveyed sheet, and in which the punch member punches holes in the conveyed sheet at plural places aligned in a sheet conveying direction. The sheet punch device further includes a sheet detecting member that is disposed upstream of the punch member in the sheet conveying direction and that detects a leading edge of the sheet being conveyed. Also included is a control device that controls the driving member such that the punch member punches a predetermined number of holes in the conveyed sheet sequentially at predetermined positions aligned in the sheet conveying direction at a predetermined time after the sheet detecting member detects a leading edge of the conveyed sheet.
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