| 摘要 |
A sheet detecting device according to an embodiment of the present invention provides a sheet having a preset number of metal materials or non-metal materials to a processing device which forms a specific shape. The sheet detecting device comprises: first and second sensing units with the sheet between the first and second sensing units; and a driving force providing unit for providing driving force to at least one of the first and second sensing units to enable at least one of the first and second sensing units to move. At least one of the first and second sensing units contacts the sheet by the driving force provided by the driving force providing unit to determine whether the sheet corresponds to the preset number. |
