1. An apparatus comprising: a document receiver configured to consecutively receive a single sheet of a first type of document followed by a plurality of sheets of a second type of document, the first type of document indicating an area of a page to which information on the second type of document is to be acquired; and processing circuitry configured to acquire first information from the single sheet of the first type of document, acquire second information from each of the plurality of sheets of the second type of document by referring to the area indicated by the first type of document for determining an area of each of the plurality of sheets of the second type of document from which to extract the second information, and automatically generate a file name for each of the plurality of sheets of the second type of document that includes the first information and the respective second information.