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Unlock Color PCB Printing with PCBWay!

by: Mar 08,2024 25691 Views 21 Comments Posted in News

Color PCB Printing PCBWay Service

Nowadays, traditional PCB printing technology can no longer meet the aesthetic requirements of modern circuit board production. To better fulfill customers' design needs, we are pleased to announce that PCBWay has introduced UV printing equipment. This equipment utilizes UV-curable inks to achieve high-quality image printing on various materials, including fiberglass boards, metal substrates, ceramic substrates, flexible boards, and rigid-flex boards.

Entrance

https://www.pcbway.com/orderonline.aspx

Prerequisites for Ordering

  1. Maximum size for a single piece: 270*470MM;
  2. Selection of background soldermask color required.

Design Specifications

  1. Drill holes, traces, soldermasks, and outline designs must comply with specifications.
  2. Avoid placing colored characters in areas with solder mask openings, such as surface-mount pads or through-hole pads.
  3. What kind of files should be provided for color printing?

Method One:

Draw colored characters on the silkscreen layer of the Gerber and provide reference pictures. For example:

Method Two: If you include information about colored silkscreen in the Gerber layer, each individual color must have its own layer. If there is only one layer, we can only print one color. [This method is not recommended].

If you need to print in multiple colors, we recommend using method One and providing us with a reference picture.

4.Please send the images you want to print on the PCB in the following formats: AI, PDF, JPEG, PNG, TIFF, etc., and indicate your desired printing location on the board.

5.If the image contains a QR code, please ensure that the QR code can be accurately scanned and recognized.

Note:

  1. If you choose UV printing Multi-color, we will use matte UV color printing by default.
  2. When designing the colored characters on the bottom layer, be careful not to design the colored characters as mirrored inverses. (The process of color printing is different from that of standard PCB silkscreen printing. When printing colorful characters on the bottom layer, they are printed with the bottom layer of the PCB facing up.)
  3. For situations where the entire top or bottom side requires full-color printing, regardless of the solder mask color you choose, we will use a white solder mask on the full-color printed side and then proceed with the color printing. This is for a better printing effect.
  4. Please upload the print image, positioning image, and Gerber in one compressed file.

By providing a clear positioning image and necessary instructions, you can assist PCBWay in accurately determining and achieving the desired printing position.

Matte UV Color Printing vs. Glossy UV Color Printing

  • Matte ink does not increase the overall thickness, and the PCB's appearance looks smooth.
  • Glossy ink increases the overall thickness and may affect the soldering of component pads. The appearance is beautiful but uneven.

Features

  • Adopting UV-LED lamp curing, which enables instant drying, can significantly enhances production efficiency.
  • UV printing technology employs UV-curable inks, ensuring firm and clear printing information resistant to fading, thus enhancing product identification and aesthetics.
  • The normal print survives SMT reflow.

  • UV printing technology can present images in various colors and styles, meeting customers' personalized requirements. Professional industrial-grade UV printers support high-precision printing, delivering exquisite results whether on flat panels or rolled materials.

  • Unlike traditional printing methods, UV printing does not produce volatile organic compounds during the production process, ensuring air quality in the production workshop and providing employees with a safer and healthier working environment.


FAQ on UV Printing:


  • Can the UV printed surface be cleaned with water?

Yes, it can be cleaned with water.

  • Can the UV printed surface be cleaned with alcohol?

It is more difficult to clean after being exposed to alcohol and baked (currently, the board undergoes a short baking process after UV printing). However, with increased contact time with alcohol and vigorous scrubbing, it can be removed. This also depends on whether the UV is on the copper surface or the solder mask surface.

  • How hard is the UV printed surface (sensitivity to scratches)?

The UV surface is not sensitive to scratches. However, compared to the solder mask, it is less scratch-resistant because UV printing is ink that is sprayed on and is relatively thin.

Welcome to give it a try if you're interested! Besides, PCBWay will continue to enhance its manufacturing capabilities to bring more choices and personalized services to customers in the future.

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  • Comments(21)
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  • Hello. I am wondering if I can UV print on one area of the board and silkscreen on another area of the board on the same side?

    Also, could I UV print on silkscreen?

    PCBWay Team 2025-01-04 09:34:50Reply

    Sure, we can perform local UV color printing.

    Reply
  • Hi, I have a question: using KiCad as design software, I am developing a board on which there is to be a colour image where in some rectangular boxes ( or squares ) inside there are PADs with written references. Now, I would like to know from someone in the PCBway service or from someone who has already carried out this type of design with colour images, what type of software or plug-in ( if any ) would give me the possibility to have accuracy in inserting the coloured writings perfectly close to the PADs. Thank you for your attention.

    PCBWay Team 2024-10-25 10:04:57Reply

    Hope this link is useful to you. https://kohacraft.com/archives/202404210835.html

    Reply
  • Hi. Another Question... I'm generating an image for color printing. What is the resolution of the printer? eg: 150 DPI, 300 DPI ? Also, do I need to make sure the color image is blank (white) over through-hole pads?

    PCBWay Team 2024-08-27 09:43:56Reply

    The printer's resolution is 720*2400dpi. In addition, Avoid placing colored characters in areas with solder mask openings, such as surface-mount pads or through-hole pads.

    Reply
  • Hi. This sounds like a great feature. I'd like to try it on my next board. I need the color to stay on for as long as possible because the boards will be handled continuously. You mention that the ink sticks to some surfaces better than others? eg: Which surface is the best for durability? Silkscreen, solder-mask or bare metal?

    PCBWay Team 2024-07-30 10:03:49Reply

    For PCB boards, there are exposed metals, FR4 substrates, and solder masks. Among these, UV adhesion is better on the solder mask.

    Reply
  • This is a great solution for front panels etc.. I'am missing some details in the article. Can the uv printed surface be cleaned with water? Can the uv printed surface be cleaned with alcohol? How hard is the uv printed surface (sensitivity to scratches)?

    PCBWay Team 2024-06-17 10:39:08Reply

    Thank you for your question. Here are the responses: 1. UV printing can be cleaned with water. 2. It is more difficult to clean after being baked with alcohol. (Currently, the board undergoes a short baking process after UV printing.) However, with increased contact time with alcohol and vigorous scrubbing, it can be removed. This also depends on whether the UV is on the copper surface or the solder mask surface. 3. The UV surface is not sensitive to scratches. However, compared to the solder mask, it is less scratch-resistant because UV printing is ink that is sprayed on and is relatively thin.

    Reply
  • Can you provide any details on the INKs used? How do they hold up to long term UV exposer, like being exposed to sunlight for an outdoor product?

    PCBWay Team 2024-06-17 10:01:54Reply

    Sorry, there is no clear data at the moment. Once there is clear data, we will inform you as soon as possible.

    Reply
  • How does the ink color hold up after putting the board through reflow?

    Reply
  • By using KiCAD as EDA: how can I manage/export colored Silkscreens to send to you?

    PCBWay Team 2024-04-11 09:46:26Reply

    Hello, Colored characters can be provided through simulated effect diagrams and reference alignment map (for easy alignment with PCB). If designed in Gerber files, they should only be placed on the silkscreen layer and annotated with colors.If you have any further questions, you can contact your sales representative at the top right corner of your back page

    Reply
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  • How is the surface after UV-printing? Is it a scratchy surface or is it a hard surface?

    PCBWay Team 2024-04-05 09:38:28Reply

    Hello, for specific details, please see the two pictures posted.

    Reply
  • Wow, that's so cool! I am an PCB artist and use a PCB only for graphics (ENIG, silkscreen etc.) This would be a great possibility to create more art. Do you have more examples, where I can see the more results after UV-Printing on a PCB?

    Reply
  • This is great !

    Reply
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