| 摘要 |
PROBLEM TO BE SOLVED: To prevent spoofing in a secure print function, and to prove that printing related to secure print is executed illegally on the basis of a printed matter.SOLUTION: A terminal device 2 transmits signature data of a signature handwritten to the terminal device 2 together with a printing request to an image forming apparatus 1. The image forming apparatus 1 receives the printing request and the signature data (a), determines the validity of the received signature data on the basis of registration signature data registered in advance (b), acquires the signature handwritten to the image forming apparatus 1 (c), and combines a print image on the basis of the printing request to print the print image combined with the signature inputted to the image forming apparatus 1 after acquiring the signature handwritten to the image forming apparatus 1 in the case that the received signature data is determined to be valid (d).SELECTED DRAWING: Figure 1 |
