An image processing apparatus includes a document reading section, a reading controller, an image transfer section, and a transfer controller. The document reading section reads documents. The reading controller controls the document reading section so as to read document images subsequent to a first sheet independently of a command from a host apparatus. The image transfer section transfers the document images which are read by the document reading section. The transfer controller controls the image transfer section based on the number of pages of the documents, which are read by the document reading section, and the number of pages of the document images, which are transferred by the image transfer section, in a case where the document images are transferred by the image transfer section whenever the document reading section reads one sheet of document.