A composition including a non-silicone material, a silicone material, and a crosslinking agent. According to one method, maps are generated and stored that define a stripe pattern for storing data on the storage nodes of a storage cluster. An annular space portion is provided between the housing and the outer periphery of the insulator. The journal is formed from a copy of data used for update and update information such as a write command for update, etc. A signal processor processes the echo lines from the moving object. The ink simultaneously satisfies the straight travel stability of ink droplets during the discharge with an ink-jet recording apparatus, the recovery performance upon introduction into a recording head of the ink-jet recording apparatus, the fixation performance of printed matters, and the drying performance after the printing.