Non-conductive epoxy ink is silkscreened onto one or both sides of the panel depending on the requirements of the customer.Or, it is printed out by laser machine.
![](https://pcbweller.com/app/uploads/2020/11/PCB-silkscreen-process.png)
The printing usually dictates the component placement, part number or name, date code, logo or other specified information. PCB Panels are then baked to cure the ink.
![](https://pcbweller.com/app/uploads/2020/11/PCB-silkscreen.png)
Common PCB silkscreen color: White,black,red,yellow.
![](https://pcbweller.com/app/uploads/2020/11/PCB-silkscreen-color.png)
WELLER normally use silkcreen ink Tamura DSR 330 to ensure a high quality of legend printing. And we are upgrade the printing machine to laser printing to get a bettter quality.