UV Printer

From Fablab Wiki
Jump to navigation Jump to search

At FabLab we have a Roland Lef2-300 printer. To make use of this machine you'll need to work in Illustrator. (File preparation )


Max. printing dimension
Width (x) 770 mm
Length (y) 330 mm
Height/ thickness (z) 100 mm

The UV-printer contains different types of ink:

  1. Primer ink
  2. Gloss/Matt ink
  3. White ink
  4. CMYK ink (Cyan, Magenta, Yellow and Key(=Black)

With these types of ink you can print on almost any material as long as it is a 2D-object. For, 3D-objects are not permitted in the UV-printer!

File preparation

Illustrator Swatches

To use specific ink like primer, white and gloss, you'll need to use specific colors in your design (see the table below). For all the other colors you can use the normal CMYK colors in Illustrator.

Download the correct swatches here: Download our Adobe Illustrator Swatches

These are the correct settings to create the color white with the UV-printer. Make sure you fill in this name, color type and the color code! Otherwise the machine won't print white.
The correct settings to create the right swatch that creates a color that corresponds with the gloss and/or matt ink
The correct settings to create the swatch that corresponds with the color that is needed to create the primer layer.

If the correct settings are not used, the printer won't recognize the swatch.

File preparation

Before you can print on the UV-printer you need to prepare you file correctly. For this machine we work in Illustrator, because in this program we can create the right swatches that the machine can read. In Illustrator you are free to open any type of file you want. However, it is advisable to work with vector files with a format type like eps. and/or svg. The benefit of working with vector files is that you can easily give a different color to a specific area.

When to use primer

The surface tension of the UV ink should be at least 10 dynes less than the surface energy of your material for proper adhesion of the ink to the material. If this is not the case, you should use primer. Primer is an adhesion promoter. If you don't use primer, adjacent ink drops deposited on the material may not flow freely and join the other ink drops to form one bigger drop. This will cause an image to have a streaky appearance or worse: to be too easily removable.

Dyne is a way to express the amount of surface tension. It is also used to express the amount of surface energy of a material.

Watch this Youtube video to get an idea of what can happen: https://youtu.be/Cr88aUrzVOc

Maintenance (staff only)


You can find the manual (online) here: https://downloadcenter.rolanddg.com/contents/manuals/LEF2-300_USE_EN/

Firmware update

Use this link to download the latest firmware: https://downloadcenter.rolanddg.com/LEF2-300#software


By default there's a ruler attached to the table. This helps aligning objects, but also adds an offset to the zero position.

To compensate for this offset, the origin should be set correctly:

Function --> change origin -->

scan = 2.8mm

feed = 5.3mm

Service menu

the procedure to get into the service menu:

Make sure the printer is turned off.

Press rapidly after each other: Arrow Down - Right - Left - Up - Right - Down - Left. Then press and hold Arrow Left, Down and Right. While holding these buttons down, press the power button.

You should see "Service mode" appear on the LCD screen.

Do not make any changes unless you really know what you're doing!