Patent ID: 7904572

Claim:
An image processing apparatus that has a first operation mode in which a user can use the image processing apparatus without authentication and a second operation mode in which authenticated users are allowed to use the image processing apparatus, and can be shared by a plurality of users, comprising: a transmission unit constructed to transmit an image data processed by the image processing apparatus; a storage unit constructed to store a first address book exclusively used by each authenticated user in the second operation mode, a second address book shared by at least some of the authenticated users in the second operation mode, and a third address book shared by users without authentication in the first operation mode, wherein the first address book, the second address book, and the third address book store therein transmission address of the processed image data to be transmitted by the transmission unit; and an address information switching unit constructed to perform switching of transmission address information between the second address book and the third address book when altering a present operation mode to another operation mode wherein the address information switching unit is constructed to perform at least one operation of setting of the third address book based on the second address book when the present operation mode is altered to the first operation mode, and of setting of the second address book based on the third address book when the present operation mode is altered to the second operation mode.