To enable execution of a process corresponding to a printing output state, such as prevention of an inappropriate printing output not satisfying a specified quality by detecting the printing output state of image data.
A printing output means 303 of an image formation device 100 forms an image 300 on a printing paper 105 by received image data. The image 300 after formed is read by a reading means 304 and transmitted as image data after read to an advertisement management server. The advertisement management server judges an identity of images of the image data transmitted to the image formation device 100, and the image data after read. When it is judged that there is no identity, ink for invalidation is discharged from the printing output means 303 to the image 300. The image 300 is invalidated by smearing with the ink or the like manner.
Fujitsuna Hideyoshi
Osamu Suzawa
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