Image reading apparatus, image forming apparatus, image reading method, and image forming method

摘要

There is disclosed an image reading process has determining an estimated size of an original based on a width of the original, securing a memory region, the memory region having capacity to hold a maximum image data associated with the estimated size, generating an image data as the original is conveying over the read window, loading the image data into the memory region, after the original passed the read window determining a page size based on the width and the image data.