A graphite article comprising a compressed mass of graphite particles and a reactive lubricant, and a method of producing a graphite articles comprising a compressed mass of graphite particles and a reactive lubricant. In the vacuum cleaning mode, the vacuum forces a first air stream in a first air stream path through the filtering unit, in a first direction, to filter out dust from the dust laden air stream. a chain or a belt, which travels along a circulating path and is looped about at least one deflecting member for reversing a travel direction of the moving member. The multilayered body is formed on the metal layer by the buildup process and separated from the core substrate together with the metal layer by breaking the vacuum state between the core substrate and the metal layer. A distributor outputs the flit stored in each of the second buffers to output destination set for the flit by the controller.