PRINTER ON WHICH PICTURE RECOGNITION PROCESSOR FOR FORGERY PREVENTION IS MOUNTED, COMPUTER FOR PROVIDING PRINT SOURCE TO PRINTER, AND PRINT SYSTEM INCLUDING PRINTER AND COMPUTER

摘要

In a computer (901), the function of controlling the operation of a picture recognition and processing device (201) for preventing forgery of a printer (902) is incorporated. With this function, a control signal (S1) for commanding the operation of the picture recognition and processing device is outputted to the printer if a command (C1) accepted from an application (102) is of a type to which a picture marked for preventing forgery belongs, and the control signal is not outputted if the command is of a type to which the picture is not marked for preventing forgery. In the printer, the function of actuating the picture recognition and processing device with respect to picture data (D1) provided from the computer only when the control signal is inputted from the computer is incorporated. Thus, in a print system using the computer and the printer on which the picture recognition and processing device for forgery prevention is mounted, the probability that even a picture irrelevant to the act of forgery will be erroneously recognized as a picture marked for preventing forgery is lowered, and the print output speed is improved as a whole. <IMAGE>