To provide a device for preventing the occurrence of incorrect data entry due to the misidentification of a document.

When document identification information has been already registered in a document identification information storing memory 11 and a correctly identified document exists as the result of document identification, an image segmented from an entry target area and an image segmented from a document image are displayed. An image for checking the document is prepared so that an operator can simply judge whether the document is correctly identified or not and an image on a correct position can be segmented or not.