Patent ID: 8653812
Filing Date: 2014-02-18
Classification: B02C,H04N

Abstract:
1. A sheet identifying apparatus for detecting at least one of a magnetic element in a sheet and a predetermined condition of the sheet, the sheet identifying apparatus comprising: a passage having an input port through which the sheet is inserted; an excitation coil disposed downstream of the input port and wound on an outer periphery of at least a portion of the passage; a first output unit that detects magnetization variation of the magnetic element in a first region of the passage based on excitation of the excitation coil, wherein an AC current is applied to the excitation coil, and the first output unit outputs a first detection signal when the magnetization variation is detected; and a second output unit that detects that the sheet passes through a second region in the passage on the basis of a characteristic of the sheet without using the magnetic element and that outputs a second detection signal when detecting that the sheet passes through the second region.