Image reading device and image forming apparatus

An image reading device comprising:

• an image scanning portion configured to scan a document sheet and read an image;
• a page classification portion configured to perform a page classification process of classifying a plurality of pieces of page image data obtained by the image scanning portion into data of a blank page that satisfies a predetermined blank sheet condition, and data of a non-blank page other than the data of the blank page;
• a primary file generation portion configured to generate a primary image data file that includes:
• the data of the non-blank page;
• the data of the blank page;
• and page classification information, and store the primary image data file in a non-transitory computer-readable data storage portion;
• a preview output portion configured to display, on a display portion, an image of the non-blank page and an image of the blank page in the primary image data file so as to separate the image of the non-blank page and the image of the blank page from each other;
• a page classification correction portion configured to correct the page classification information in the primary image data file according to a predetermined correction operation;
• and
• a file replacement portion configured to replace the primary image data file stored in the data storage portion, with a secondary image data file that includes the data of the non-blank page and does not include the data of the blank page, when a predetermined determination condition is satisfied.