How can UV printing quality be further improved? Ink thickness adjustment is essential!

How can UV printing quality be further improved? Ink thickness adjustment is essential!

During UV printing, adjusting ink thickness plays a crucial role in printing quality. How can ink thickness be precisely controlled to improve print quality? Let's take a look together with the decimal!

Adjust ink thickness according to material properties

01

Soft substrates or those with larger gaps

These materials easily allow ink to penetrate and diffuse, so increase the ink content by 20%~40% to ensure image clarity. For example, when printing on soft, porous materials like canvas, if the ink is insufficient, the image will become blurry due to the ink being absorbed.

02

Dark background materials

Dark backgrounds tend to mask ink colors, so increase ink content to make the image colors vivid and not covered by the background color. For example, printing white patterns on dark blue plastic boards and increasing ink content makes the white stand out more.

03

Special materials such as leather

If you want to achieve a good tactile feel or embossed effect on leather, the ink thickness should be appropriately reduced to prevent cracking or poor tactile feel. Generally, the ink thickness can be reduced to one-third to one-half of the usual amount.

Adjust ink thickness according to image color requirements

01

Dark or highly saturated images

For images with deep colors and high saturation, you need to increase ink thickness to enhance color expression and layering. For example, when printing large oil paintings, thickening the ink makes dark areas rich and transitions more naturally.

02

Images of vibrant colors

For brightly colored images, appropriately increasing ink thickness ensures rich colors and strong visual impact. For printing colorful patterns like flowers, ample ink can make the petal colors more vivid.

03

Gradient effect images

Progressive ink can be used, allowing natural color transitions by adjusting ink thickness. When printing the gradient from blue to white in the sky, reasonably controlling ink thickness ensures that gradient areas are not noticeable.

Adjust ink thickness based on special effect requirements

For example, in relief 3D effects, achieving relief requires significantly increasing the ink thickness, usually controlled between 3~5mm, as excessive thickness can easily cause cracking. UV printers outline lines by stacking white ink, then print in color. Adjusting the amount of white ink sprayed allows for control of thickness-the higher the value, the more ink output.

Specific adjustment methods

01

Inkjet percentage setting

In the printing software, set the inkjet percentage to increase ink thickness and improve image quality. Generally, the incremental increase is 10%~20%.

02

Print count settings

Increasing the number of prints allows for ink stacking, achieving a thicker effect and saving ink. For example, one conventional printing cycle can be increased to 2~3 cycles, but overall time cost must be considered.

03

Feather percentage settings

The feathering function enhances pattern delicacy and color richness, with values ranging from 0%~200%. The higher the value, the better the effect, but production speed will decrease. Depending on pattern detail and time requirements, choose an appropriate feathering percentage between 50%~150%.

04

Physical adjustment

Adjust the printing thickness with adjustable screws under the printer's baseplate. When the medium is thin, raise the support pins to thicken the print layer. Each adjustment range is recommended to be controlled between 0.1~0.2mm.

05

Set the medium thickness

Set the media thickness in the printing software. If the thickness increases, the print head height needs to be adjusted accordingly. For media of 1~2mm, the print head height can be adjusted to 3~5mm.

Notes

01

The ink thickness is reasonable

Ink thickness is not always better by thicker thickness; improper settings can cause blurry images and uneven colors. For example, excessive ink accumulation on smooth glass can cause ink to flow and disrupt the image contour.

02

Environmental factors

The temperature and humidity of the printing environment affect ink drying and curing performance. Suitable temperatures are 20~25°C and humidity of 40%~60%. Overheating, cold, moisture, or drying can all degrade ink performance.

03

Ink type

The thickness of spot color ink cannot be adjusted by yourself, as this can clog the printhead and cause scrapping. Use spot color ink with the manufacturer's specified model and viscosity

04

Resolution settings

Print resolution is a key parameter. It is recommended to use 600DPIx 2400dpi or 635DPX 2400dpi. Excessive resolution may exceed printer performance and actually affect the quality.

Adjusting the ink thickness of a UV printer is a process that comprehensively considers material properties, image requirements, and special effects. Only through reasonable and precise adjustments can the advantages of UV printers be fully utilized, producing high-quality, personalized printed works that meet the needs of different customers in various application scenarios!

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