An imaging device to which a portable storage medium is attachable, includes: a portable storage medium attachment section which attaches the portable storage medium; an inside storage medium which links image data imaged to information of imaging date and time and stores the data; and a transfer control section which controls a transfer of the image data from the inside storage medium to the portable storage medium, the portable storage medium having a data area which stores the image data transferred and a system area which stores management data generated corresponding to the image data stored in the data area, the transfer control section setting time stamp information of the management data generated in the portable storage medium corresponding to the image data transferred from the inside storage medium to the portable storage medium as the information of imaging date and time linked to the image data transferred.