Information processor, method for managing the same and computer program product

A method for managing an image processing apparatus capable of connecting, via a communication line, to an authentication server that memorizes first user account information and performs user authentication based on the memorized first user account information, the method comprising:

• letting a user information memorizing portion memorize access privilege information indicating authorization to use a function of the image processing apparatus for each user who has ever used the image processing apparatus;
• and
• letting the image processing apparatus perform a first process, a second process, a third process and a fourth process when a user desires to use the image processing apparatus,
• the first process being a process of requesting the authentication server to authenticate the user,
• the second process being a process of automatically generating, when the authentication server verifies that the user is an authorized user and the access privilege information of the user is not memorized in the user information memorizing portion, access privilege information of the authenticated user to let the user information memorizing portion memorize the generated access privilege information,
• the third process being a process of automatically deleting at least one memorized user information other than the generated access privilege information of the user from the user information memorizing portion when the user information memorizing portion memorizes the access privilege information in excess of a predetermined value, and
• the fourth process being a process of determining whether the function specified by the authenticated user is permitted or not based on the access privilege information corresponding to the authenticated user.

A non-transitory computer readable storage medium storing a computer program used for an image processing apparatus that includes a user information memorizing portion for memorizing access privilege information indicating authorization to use a function of the image processing apparatus for each user, the program making the image processing apparatus perform processing of:

• when a user desires to use the image processing apparatus,
• requesting an authentication server, which is connected via a communication line to the image processing apparatus and memorizes first user account information, to authenticate the user based on the memorized first user account information;
• automatically generating, when the authentication server verifies that the user is an authorized user and the access privilege information of the user is not memorized in the user information memorizing portion, access privilege information of the authenticated user to let the user information memorizing portion memorize the generated access privilege information;
• automatically deleting at least one memorized user information other than the generated access privilege information of the user from the user information memorizing portion when the user information memorizing portion memorizes the access privilege information in excess of a predetermined value;
• and
• determining whether the function specified by the authenticated user is permitted or not based on the access privilege information corresponding to the authenticated user.