To enable the appropriate control of a sheet feed in accordance with the presence of a stamp to save on the consumption of the sheet when the stamp is not present and also enable the easy replacement of an ink ribbon cassette on a printer and the easy detachment of the stamp, in the electric equipment with the printer and the stamp.

Inside a body device 1, a stamp device 21 which imprints a stamp 25 on a sheet P to print specified information is arranged on the sheet introduction side of a printer 3 which introduces the sheet P, prints input data on the sheet P and feeds the sheet P on which the data is printed to the outside of the body device 1. In addition, a support member 22 for supporting the stamp device 21 is installed in a freely rotatable manner inside the body device 1. Further, the stamp 25 is set to be freely detachable from the support member 22, and inside the body device 1, a retaining part for retaining the stamp device 21 is provided at a specified position which enables an operation to attach/ detach the stamp 25 when the support member 22 is rotated.