A memory cell array is composed of a plurality of blocks separated in column direction every three word lines. The controller updates the information stored in the storage unit after each time the controller measures the operation amount. The web store is used for providing a digital content product for purchase at the user terminal. A separate conductor is caused to contact with the conductive pattern layer and the conductive pattern layer is caused to be electrically connected to an external electric circuit by the conductor. The sealing arrangement is preferably a self-loaded sealing arrangement. Further, the wound in web tension is maintained during the entire winding process.