Step 4 of the PCE Process

During this step in the photo etching process, material with the photosensitive coating is exposed to UV light. This is a straightforward process that transfers the photo tool image onto the coated material.

The metal is put into the double-sided phototool and is exposed to UV light on both sides, an image is formed in the photoresist. This is then developed in a liquid formulation to form an adherent, durable image on both sides of the metal.