{HEAD ~ The method} permits {TAIL ~ an ultra black film} to be obtained, which has spectral reflectance of 0.1 to 0.4%, and the surface of which has innumerable ultra fine asperities of relatively uniform height capable of observation with a scanning electron microscope 
permits
{ HEAD ~ The method } permits { TAIL ~ an ultra black film } to be obtained , which has spectral reflectance of 0.1 to 0.4 % , and the surface of which has innumerable ultra fine asperities of relatively uniform height capable of observation with a scanning electron microscope
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