Patent ID: 8488155

Claim:
A document reading device comprising: a document reading portion; a blank-sheet determining portion that determines blank-sheet image data among document image data read by the document reading portion; a preview displaying portion that performs preview display for the document image data excluding the blank-sheet image data determined by the blank-sheet determining portion, the preview displaying portion being capable of performing re-preview display, the re-preview display being carried out so as to display all of the document image data excluding the blank-sheet image data if a blank sheet skip instruction is activated, and the re-preview display being carried out so as to display all of the document image data including the blank-sheet image data if the blank-sheet skip instruction is canceled; and a show-through determining portion that determines whether the document image data is image data of a backside of a document shown through, and if so, the image data of the backside of the document shown through is processed as the blank-sheet image data.