CLAMPING JIG FOR GLASS SUBSTRATE, BUFFER SHEET, METHOD FOR PROCESSING GLASS SUBSTRATE, AND GLASS SUBSTRATE

摘要

THE PRESENT INVENTION PROVIDES A METHOD WHICH CAN SIMULTANEOUSLY GRIND INNER PERIPHERAL EDGES AND OUTER PERIPHERAL EDGES OF A MULTIPLICITY OF GLASS SUBSTRATES (G) USED FOR MAGNETIC STORAGE MEDIA OR THE LIKE. IN ORDER TO CHAMFER THE OUTER EDGES OF THE GLASS SUBSTRATES (G), A MULTIPLICITY OF ANNULAR GLASS SUBSTRATES (G) ARE FIRSTLY STACKED WITH BUFFER SHEETS (5) INTERPOSED BETWEEN THE GLASS SUBSTRATES (G) TO MAKE A GLASS SUBSTRATE BLOCK (G). THEN, A FIRST PLATES (1, 1) OF THE ABOVE DESCRIBED CLAMPING JIG ARE APPLIED TO BOTH SIDES OF THE GLASS SUBSTRATE BLOCK (G), AND A FIRST FASTENING TOOL (3) IS INSERTED THROUGH CENTER HOLES OF THE FIRST PLATES (1, 1) AND THE GLASS SUBSTRATE BLOCK (G). NEXT, THE GLASS SUBSTRATE BLOCK (G) IS CLAMPED FROM AN INSIDE THEREOF FOR CHAMFERING THE OUTER EDGES WITH A GRINDSTONE (6).