UV printers are popular in these years. There are some reasons. UV printers have the function of printing relief. They can meet the requirements of quick printing and drying. The key support for perfect colors and patterns is the color management system.

Sometimes, there may be some problems with UV printing, such as lack of color layering, lack of gloss, etc.. So what can we do to avoid them?

Here are the key elements of color management system: equipment calibration, characterization, and color conversion.

1. Equipment calibration

To ensure stability and sustainability of colors, it is required to calibrate the input devices, display devices and output devices to ensure that they are in good operating condition.

2. Input calibration

It calibrates the brightness, saturation, and RGB balance of the input device. For example, a calibrated scanner should obtain the same image data no matter when it is scanned for the same original image.

3. Display calibration

It ensures accurate color on the display.

4. Export calibration

The calibration of the typesetting machine must be based on the correct image on the display. The calibration of the printing press and proofing machine must ensure that the printing consumables meet the requirements.

5. Equipment characterization

The color management system migrates the data file to the color space based on the characteristic document of the input device, and then migrates the color information of the data file to the color space of the export device (display screen, proofer) based on the characteristic document of the export device, thereby ensuring high color restoration in the work content.

6. Color conversion

The color management module exchanges color data based on the device colors described in the characteristic document. A basic principle of color conversion is that one color is guaranteed to be the same on different devices.

Now, we need a device-independent color system to consider the colors on each device. Any device-dependent color space can be expressed in this color space. If different device-dependent colors can correspond to the same point in this device-independent color space, then the conversion between them must be accurate.

During color conversion, the color data is first converted into the color value of PCS according to the device characteristic file, and then converted into the color value of other devices as needed.

According to the principle of color conversion mentioned above, in order to obtain good printing effects, the ink used by the UV printer must be strictly controlled.

If the ink does not meet the standard, and the water content is too high, the ink will easily spread, the ink dots will be difficult to control, and the color density will not be correctly controlled. The printing effect will have no layering. The gloss won't be enough.

The air humidity in the working environment should always be kept moderate. UV printers are very afraid of water, whether before or after printing. If the air humidity is too humid, the printing material will get damp, resulting in unsatisfactory printing results.

Therefore, always keeping the air humidity moderate can compensate for the water lost in the ink due to heat, and ensure that the printing material does not get damp, so that the printing can be smooth.