PURPOSE: To diversify printing, by making plural kinds of type aggregates different in the number and size of types mountable in an alternative way and selecting control data corresponding to the kinds thereof to perform control and recording.

CONSTITUTION: A standard type wheel 5A and a type wheel 5B different therefrom are constituted so as to be made alternatively mountable on a carriage 2. The type wheel 5B is equal to the type wheel 5A in the distance (l) from the wheel center 7 to the center of each type 9 but formed so as to have a size, for example, almost two times the size of the type 9. A memory apparatus 17 is connected to CPU16 and the arrangement of the types 9 and control pieces of data respectively different with respect to the type wheels 5A, 5B performing character selection control corresponding to said arrangement are stored in said memory apparatus 17 other the control program of CPU16. When indication input is performed by a type wheel indication key, proper printing is performed by the control corresponding to the kind of each of the type wheels 5A, 5B mounted.