To simply achieve direct printing not only from a host device such as a television but also from a slave device such as a digital camera.

Printing from a slave and printing from a host are configured so as that scripts of the same sorts can be transmitted and received. For instance, as compared with printing achieved by a quite different protocol such as a protocol of a communication procedure for performing printing by an instruction from a PC or the like or a direct printing protocol of a DPS, a program for achieving a protocol can be shared, and as compared with printing achieved by individual protocols, an area for storing DPS script data 211 can be simply saved.