A method is provided to notify a printer user of a predicted result of a failure without employing dedicated display means. According to the method, information regarding the service situation of a printer P is acquired, the relation between the acquired service situation and a failure is analyzed, the occurrence time, etc. of the failure of the printer P are predicted from the relation, and the result of the prediction is notified to the printer P so as to print the predicted result by employing the print function of the, printer P itself. Thus, the occurrence time, contents, etc. of the failure can be reliably notified to a printer user without employing dedicated display means.

 
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> Copy protection via multiple tests

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