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#Silkscreen process software
#Silkscreen process code

It is used for the manufacturing steps of the PCB assembly process. In this method, an inkjet printer is used to print the silkscreen on the PCB with acrylic ink.Īlthough PCB Silkscreen application is performed during PCB board fabrication. The process is similar to the method used to apply solder mask and involves exposing an imageable film to UV (ultraviolet) light.

LPI is the most time-intensive approach, but yields the best resolution of images and text.

The most common PCB Silkscreen printing techniques are LPI (Liquid Photo Imaging) and DLP (Direct Legend Printing). Importance of the Silkscreen Layer to PCB Assembly Screens can be cleaned and reclaimed to be used again although not for jobs which require high resolutions. This method of screening requires the following equipment: Laser photo plotter to produce the initial film, UV printer, spray developer and curing ovens. Both the screen and PCB panel must be registered precisely to ensure proper alignment. Solvent resistant emulsions are used to coat the screens prior to imaging. From these variables the correct amount and distribution of ink is derived and even the pressure of the stroke will impact the final outcome.Ĭonventional Silkscreen printing requires polyester screens stretched across aluminum frames. Some parameters of PCB Silkscreen Printing to be considered include viscosity of the ink, room temperature, humidity, age of the ink and hardener and line resolution. If you have a requirement for Silkscreen printing, just let us to be informed. We do have a minimum size of 8mil line width for all lettering and graphics.

Silkscreen Printing is done when the PCB boards are still panelized prior to the application of the final finish or routing or V-cut.

#Silkscreen process code

We prefer to place our logo and date code (WWYY) on an Silkscreen layer. If you require these markings to be placed in a specific area or omitted, you need to specify it in the PCB readme.txt file, in a fabrication drawing or in your communications with the PCB manufacturer. But just because you know the PCB Board will also double as a backlit equipment faceplate with your company logo doesn’t mean your PCB manufacturer will. Although there are no strict standards for where these markings appear, PCB manufacturers will generally try to place them in non-critical areas. PCB Manufacturers are required by IPC to provide both a manufacturer’s mark and an identifier which will allow for lot tracing should problem occur. Now, many packages allow for all available system fonts to be used.

#Silkscreen process software

If the sourced non-standard colors do not be used out in your PCB Fabrication, they will be expired soon counting in hours.Īt one time, PCB CAM software allowed for a few standard fonts on PCB surface to be used in silkscreen layers. Why? Generally, these non-standard colors are not commonly required and need take time to source such inks. Non-standard colors can be requested but will impact your cost and lead-time. Standard colors are black, white and yellow. PCB Silkscreen requires specially formulated inks. You need to know the work required to produce two Silkscreen is simply twice as much as one side printing. It is common to have Silkscreen required for the solder side. Silkscreen is normally to identify components, test points, PCB and PCB Assembly part numbers, warning symbols, company logos and manufacturer marks. Most Printed Circuit Boards have a component legend to show which component goes where to placement.