1) Visual positioning

Visual positioning is usually applicable to the use of heavy nitrogen bottom versions. The heavy nitrogen bottom version is brown or orange -red translucent state; Fix it with tape to expose.

2) The positioning system positioning of the departure positioning

The dismantling positioning system includes a soft -camera porer and double -round holes. The positioning method is: First, the two bottom versions of the front and negatives are relative to under the microscope; the two bottom versions of the counterpart are used for the two positioning holes with a soft sheet punch in the bottom version. Take a drilling program for the bottom version of the bottom version, and you can get the data belt of the component hole and positioning hole at the same time. Drilling the component hole and the positioning hole at one time, after the metallic hole of the printing board and the pre -plated copper, then Can be exposed with dual round holes.

3) Fixed nail positioning

This fixed nail is divided into two systems, one set of fixed photo bottom, and the other set of fixed printed boards. By adjusting the position of the two nails, the photo bottom version of the photo and the printed board are aligned. After exposure, the polymerization reaction will continue for a period of time. In order to ensure the stability of the process, do not immediately remove the polyester film after exposure, so that the polymerization reaction continues. Remove the polyester film before the development.