both to connect them electrically and to fix them mechanically. Printed circuit boards are used in almost all silkscreen electronic products and some electrical products. Currently, the production and assembly of printed circuits are automated. Electronic computer aided design software is available to do much of the layout work. Multilayer PCBs allow for
red. Screen printing is used to render useful information on the PCB board that can silkscreen help users during assembly. It is used to mark component values, part numbers, test points, polarity, etc. Screen printing does not influence the printed circuit and the possible problems that may appear may be slight discolorations
an ink and is applied in a thin layer similar to varnish on the entire surface of the printed circuit less on the soldering pads and it also has a role of antioxidation silkscreen of the copper traces. Being a substance with a high degree of electrical insulation, the soldering mask offers the printed