1. An apparatus comprising a processor and a memory, the apparatus comprising: a memory storing instructions and at least one processor which executes the stored instructions, the at least one processor being configured to act as: a setting unit configured to set characters and an identifying value, which has been selected from different identifying values by a user, to be used for printing out a copy-forgery-inhibited pattern image; and a causing unit configured to cause a printing unit to print out, on a first paper, a document image and the copy-forgery-inhibited pattern image corresponding to the set identifying value and including the set characters, wherein the causing unit is further configured to cause the printing unit to print out, on a second paper, different images and the different identifying values including the currently set identifying value, without the document image; wherein each image of the different images printed out on the second paper includes a first region and a second region having bigger dots than the first region, and a difference in density of the first and second regions in the each image is different, and at least one of the first region and the second region in the each image depicts the set characters.