| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a printer and a function addition method in the printer capable of adding a function when an external storage medium is connected, nullifying the added function to be unusable when the external storage medium is disconnected, as well as validating the function to be usable more quickly than the first connection when the external storage medium is reconnected. <P>SOLUTION: When connection of an external storage medium 20 is detected, a second firmware program FW2 is read from the external storage medium 20 for reactivation, thereby adding an additional service portion 41 to a printer 11. when the external storage medium 20 is removed so that the connection is not detected, a nullification processing part 44 nullifies a communication function. At this time, a user interface of IP communication in a display 13B is grayed out to be nullified. Subsequently, when reconnection of the external storage medium 20 is detected, a validation processing part 45 validates the communication function. <P>COPYRIGHT: (C)2012,JPO&INPIT |
