Legend is a function, not one mandatory machineSilkscreen is commonly used as the name for PCB legend, even when the actual printing route differs.Legend is a function, not one mandatory machineUse the released construction and agreed requirementsScreen printingTransfer ink through a patterned screen.Direct inkjetDeposit compatible ink from digital artwork.Photoimageable routeUse a compatible coating and image process.Common requirementReadable, correctly located identification.Process-specific reviewInk, surface, registration, cure and finished acceptance.³Ô¹Ïtv · Engineering explanation · Conceptual, not to scale