An adhesive melter includes an inlet port, an outlet port, and an interior configured to heat and hold adhesive pellets. In such a fashion, the first temperature can be chosen to be lower such that decomposition or desorption of the adsorbed first reactant does not occur, and the second temperature can be chosen to be higher such that comparably greater deposition rate and film purity can be achieved. The blade portion may be rolled into at least two different thicknesses. The encryption key can be released by the server at any time such that an end-user may encrypt time sensitive information for release at the specific future time, but the random number is not released until the specific future time has passed. The memory stores priority level information corresponding to each of the classes of service. When a power supply is broken during a writing process so as not to be supplied to the inside, a ferroelectric capacitor in the FeRAM 4 is used so that a voltage for time required for completing the writing process is secured.