Patent ID: 8045211

Claim:
An image forming device to which an external storage is detachably connectable, comprising: a printing unit configured to print an image on a recording sheet based on image data developed from the print data which is retrieved from the external storage connected to the image forming device; a displaying unit configured to display information; a processing unit; and memory storing computer-executable instructions thereon, which when executed by the processing unit, cause the processing unit to operate as a storage controlling unit configured to control storing of the image data in the external storage connected to the image forming device and an internal storage which is provided to the image forming device, in the external storage; a selection unit configured to allow a user to select image data; and a reprinting unit configured to perform a reprinting operation based on image data selected with the selection unit, wherein the storage controller stores the image data developed from the print data, which is retrieved from the print data stored in the external storage, in the external storage when connected to the image forming device; wherein the selection unit selectably displays at least file names of image data stored in the external storage on the displaying unit when the external storage is connected to the image forming device, and wherein the selection unit selectably displays file names of image data stored in the internal storage on the displaying unit when the external storage is not connected to the image forming device.