Tooling And Method For Inspection Of Glassmaster Grid Locations
Original Publication Date: 1979-Nov-01
Included in the Prior Art Database: 2005-Feb-20
Photofabrication of printed circuits often relies on the use of glassmasters on which a predetermined circuit pattern has been formed. It is necessary, prior to their use for this purpose, to inspect the glassmasters to insure that their patterns fall within placement specification. Current inspection methods are too operator dependent to provide reliable inspection results.