1. Introduction
As increasing demand of toner cartridge for copy machine and development of its technology, toner powder size
becomes smaller and more dangerous of dust explosion. And in regard to environmental aspects, recycle and re-use
of toner cartridge is attempted [1]. Therefore author is afraid that incident of toners occurs more often in recycling
facilities as well as manufacture process. SDS (Safety Data Sheet) made by manufacture shows its hazard, and it is
not hazardous materials in the Recommendations on the transport of dangerous goods by the United Nations [2], and not in the Japanese Fire Service Law. However it is regulated as designated material by the Japanese Fire Service
Law. Designated materials are not hazardous materials, but are regulated as materials having potentials to occur or
spread fire. According to SDS it is constituted with synthetic resin, 50 to 80