1. An image formation apparatus for producing copies of documents containing images, comprising: an image reading unit for reading the image of a document; an image information acquiring unit for acquiring image information of the document; and a permission/refusal determining unit for comparing the image read by said image reading unit and the image information acquired by said image information acquiring unit, and determining whether or not reproduction of the image of the document as it is can be permitted according to the extent of difference between the read image and the acquired image information, wherein a copy is produced from the reproduced image of the document if permitted by said permission/refusal determining unit.