| 摘要 |
An image processing method for use in a printer driver includes steps of receiving an instruction for a printing process, judging whether an image corresponding to a developed image signal represents a specified image according to the printing process, and outputting a result obtained in the judging step so as to use the result in processing of the image signal. A forgery preventing module in an operating system outputs an instruction to a display driver for executing a predetermined display according to the result obtained in the judging step.
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