Patent ID: 8897323

Claim:
A network synchronization system including a plurality of information processing devices, the network synchronization system comprising: a first information processing device among the plurality of information processing devices including, a first printing unit configured to print image data onto a recording medium of the first information processing device, and a synchronization-use common storage unit configured to store update information, the update information being information to be applied to each of the plurality of information processing devices; and a second information processing device among the plurality of information processing devices including, a second printing unit configured to print image data onto a recording medium of the second information processing device, and a synchronization control unit configured to acquire the update information from one of (i) the synchronization-use common storage unit of the first information processing device and (ii) an update information server connected to the network synchronization system via a network, the synchronization control unit configured to apply the update information to the second information processing device based on a comparison between first user information associated with the first information processing device and second user information associated with the second information processing device, in the acquiring, the synchronization control unit is configured to acquire common update information that is common to the plurality of information processing devices, and the synchronization-use common storage unit is configured to store the common update information, in the applying the update information, the synchronization control unit is configured to update the second user information based on whether one of the first user information and the second user information is a latest updated user information.