A CUTTER WHEEL FOR THE SUBSTRATE MADE OF BRITTLE MATERIALS AND A SCRIBER EQUIPPED WITH THE SAME

摘要

PURPOSE: Provided is a cutter wheel for brittle material substrate and scriber possessing it, to overcome the problem such that a large quantity of horizontal cracks to degrade quality occur with the conventional glass cutter wheel. CONSTITUTION: The glass cutter wheel having knife blades of a V shape along the circumferential part of a disk-shaped wheel is so formed that blade edges, for example, the ridgeline parts of the knife blades have a polygonal shape when viewed from sideways in forming the knife blades of the V shape.