| 摘要 |
<p>PROBLEM TO BE SOLVED: To ensure high security by performing authentication in view of user's use authority when an external storage device is connected to an image forming apparatus.SOLUTION: When an external memory M is connected to a printer 1, a user determination unit 48 determines whether a user permitted to use the connected external memory M matches a login user while referring to a user correspondence table stored in a user correspondence table storage unit 46. After the user determination unit 48 determines that the users match, an external memory authentication unit 49 authenticates the external memory M on the basis of an authentication code corresponding to external memory information on the connected external memory M and an authentication code stored in the external memory M while referring to an external memory authentication table storage unit 47.</p> |
