Prodn. of film pattern for circuit board - by placing drawing sheets for functional groups on support which are connected by coloured tapes

摘要

Conducting traces in the individual function groups and between the groups and the plug boards are produced on a layer which is subsequently photographed. Prepared drawing sheets for each function group, show the required conducting traces. This is fastened on the support and conducting traces between them and the plug boards are represented by coloured tapes also placed on the support. Transparent units are attached to the backing layer by an adhesive.