To provide an impact printer capable of properly determining the service life of an ink ribbon even in the case of using any recording medium.

The impact printer printing the recording medium by impacting the recording medium 100 by an impact body via the ink ribbon while making the ink ribbon run and in which the endless ink ribbon 110 is loaded so as to circulatingly run has a kind recognizing section 14 recognizing the kind of the recording media used for printing, a printing amount calculating section 15 obtaining the printing amount using the ink ribbon during using, a service life determining section 16 determining the service life of the ink ribbon during using based on the printing amount, and a service life informing section 17 giving the determining result of the service life by the service life determining section 16 to a user, and the service life determining section 16 determines the service life of the ink ribbon during using not only based on the printing amount but also based on the kind of the recording media.