CUTTER WHEEL FOR BRITTLE MATERIAL SUBSTRATE AND SCRIBER HAVING THE SAME

摘要

PROBLEM TO BE SOLVED: To overcome the problem such that a large quantity of horizontal cracks to degrade quality occur with the conventional glass cutter wheel. SOLUTION: The glass cutter wheel 11 having knife blades of a V shape along the circumferential part of a disk-shaped wheel is so formed that blade edges 13, i.e., the ridgeline parts of the knife blades have a polygonal shape when viewed from sideways in forming the knife blades of the V shape described above.