Process for producing dividable plates of brittle material with high accuracy and apparatus for receiving and precision-grinding the end faces of a plate

Abstract

A process for producing a plate from a brittle material Which can be individually separated by breaking to form one or more smaller platelets. In this process, laser scoring is used to produce in a single plate of large dimensions a parallel first predetermined breaking points respectively at the distance d.sub.a and b parallel second predetermined breaking points respectively at the distance d.sub.b, which intersect the first predetermined breaking points, a and b being integers over 1. The edge zone is removed in the outer region at the distance d.sub.a from the two outer first predetermined breaking points and at the distance d.sub.b from the two outer second predetermined breaking points, so that the remaining plate, without border pieces, contains (a-1).times.(b-1) platelet sections of the same size, which are bounded by in each case four predetermined breaking points.

Dependencies are inferred from the claim text.