STORAGE BODY AND METHOD OF TESTING GLASS SUBSTRATE FOR MAGNETIC DISK

摘要

PROBLEM TO BE SOLVED: To provide a storage body that prevents smoothness from being reduced during a test. SOLUTION: The storage body has covers 33a and 33b whose transmission of visible light is 50% or higher. The covers 33a and 33b are formed with polypropylene whose transmission of visible light at 2 mm thick is 50 to 70%. COPYRIGHT: (C)2011,JPO&INPIT