1. An image generation apparatus comprising: an information acquisition section that acquires record information to be recorded on a recording medium; and an image generation section that generates an image comprising code pattern images and a latent image for checking paper being copied, the code pattern image representing the record information acquired by the information acquisition section, the latent image for checking paper being copied including second pattern images each having a smaller size than each code pattern image and third pattern images each having a larger size than each code pattern image; wherein the image generation section replaces the code pattern images placed in an area where the latent image for checking paper being copied is formed, by at least ones of the second pattern images and the third pattern images so as to generate the latent image for checking paper being copied.