DEVICE FOR IDENTIFYING TYPES OF SHEET MATERIALS

摘要

A device for identifying types of sheet materials comprises: a detecting unit for detecting information regarding moisture of a sheet material; external force applying means for applying an external force to the sheet material; information obtaining means for obtaining information according to a force that is attenuated by the presence of the sheet material when the external force is applied to the sheet material by the external force applying means; and a judging unit for identifying the type of the sheet material based on the information obtained from the detecting unit and the information obtained from the information obtaining means. According to the device, the type of a sheet material can be detected even when the sheet material is not marked in advance with number code or other information, and the water content of the sheet material can be detected as well.