Patent ID: 7544024

Claim:
A coated cutting insert, comprising: a substrate; a base layer formed on the substrate; and an indicating layer formed on a portion of the base layer, wherein in said substrate, at least one surface serves as a rake face, at least one other surface serves as a flank face, and a ridge where the rake face and the flank face cross serves as a cutting edge, said base layer has a color which is different from that of said indicating layer, said indicating layer is formed on said flank face and on said base layer, the indicating layer is formed over an entirety of a region A 2 or a portion of A 2 , and the indicating layer is not formed on a region A 1 extending from said cutting edge in a vertical direction with a distance of no less than 0.2 mm and less than 3.0 mm, and said region A 2 is a region excluding said region A 1 from said flank face.