Abstract: An image output processing apparatus, which temporarily stores inputted image data and thereafter reads out the same to output images on sheets of paper, includes a CPU which (i) divides inputted image data into a plurality of blocks under predetermined conditions in an order in which the image data are inputted, so that one block has an amount of image data not exceeding a capacity of the storing means, (ii) when the storing of image data of one block in the storing means is finished, reads out the temporarily stored image data from the storing means, outputs the image data of the block so that a set number of copies of the images are obtained, and makes the storing means free, and (iii) thereafter stores image data of a next block into the storing means and applies to the image data the same processing operation as that described above.