Even if a write operation onto a storage media on an external storage device is interrupted, consistency of management information on the storage media is improved. An image file transfer device includes a transferor which transfers an image file stored on a storage media to an external device, a retriever which obtains management information in relation to a file system from a storage media included in the external device, before the transfer of the image file by the transferor, a non-volatile storage which stores the management information obtained by the retriever, and a deleter which deletes the management information stored in the non-volatile storage in response to a completion of the transfer of the image file by the transferor.