Image reading apparatus for dividing read document images into documents

An image reading apparatus comprising:

• an image reading apparatus configured to acquire document images of a plurality of pages obtained by reading a document bundle including a plurality of documents one by one;
• and
• a control device including a processor, and functioning as
• a page number recognizer configured to recognize a page number of each document image and determine a first page of the document in the document images of the plurality of pages acquired by the image reading apparatus;
• a layout recognizer configured to recognize a marginal area width and background color of each document image and determine the first page of the document;
• a title recognizer configured to recognize a title from each document image and determine the first page of the document;
• a controller configured to cause the page number recognizer, the layout recognizer, or the title recognizer to determine whether each document image is the first page of the document;
• and
• a divider configured to divide the document images into the same type of documents using a result of the determination as to whether or not each document image is the first page of the document by the page number recognizer, the layout recognizer, or the title recognizer that has performed the determination, by the processor executing a control program.