| 摘要 |
When document data of a document comprising at least one page is input, the input document data is stored as a document file for each document. Moreover, image data corresponding to the document data of each stored document file is produced. On the other hand, text-form document data is produced from the input document data. At least one character string of a date form is detected from the text-form document data. Characters of the detected character string are recognized. A result of the recognition is determined as the preparation date of the document file corresponding to the input document data. The produced image data is displayed while successively switched every document unit, and in order in accordance with the determined preparation date.
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