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Fluorescent printing and phosphorescent (photoluminescent) printing are two technologies used to create special effects that attract attention in both advertising and decorative designs. Although both types of printing are based on light-emitting inks, they work in completely different ways, require different exposure conditions and offer different creative possibilities. In this article, we explain the difference between fluorescence and phosphorescent printing, when it is worth using each of the technologies and what effects can be achieved thanks to them.

Table of contents

1. What is the difference between fluorescence and phosphorescent printing?
2. How does fluorescent printing work and when does it work?
3. What is glow-in-the-dark phosphorescent printing?
4. Fluorescent vs photoluminescent printing – comparison of effects and durability
5. Where is the best place to use fluorescent printing and where is phosphorescent printing?

What is the difference between fluorescence and phosphorescent printing?

Fluorescent and phosphorescent printing are often confused because they both use specialty inks that emit light. However, they differ in their mechanism of action, the intensity of the effect and the conditions in which they glow. Fluorescent printing uses inks that immediately emit light when exposed to UV rays. The colors become very bright, but the glowing effect is only visible in the presence of UV. Phosphoresis printing works very differently – glow in the dark inks store light and give it back slowly in the dark, providing a visible effect without the need for UV lamps. This is the basic difference that determines the choice of technology for the project.

How does fluorescent printing work and when does it work?

Fluorescent printing is based on fluorescent pigments that absorb UV light and immediately emit it as intense visible light. Thanks to this, the colors are extremely saturated and “glowing” already in daylight, and under UV lamps the effect becomes even more spectacular. Fluorescent printing is mainly used where a strong color accent is important: in event prints, indoor advertising, special signage, promotional materials or club decorations. However, it should be remembered that fluorescent paints are less resistant to sunlight, so they are not recommended for long-term outdoor campaigns. Their key use is short displays or interior printing.

What is glow-in-the-dark phosphorescent printing?

Phosphorescent (photoluminescent) printing uses glow in the dark inks, which collect light energy and gradually emit it in the dark. Unlike fluorescence, the phenomenon of phosphorescence does not require continuous exposure. All you need is a prior “charge” with natural or artificial light. The glowing effect can last from several dozen minutes to even several hours, depending on the pigment and exposure conditions. Thanks to this, phosphorescent printing works well in projects that are to remain visible after dark: in safety signs, decorative elements, outdoor advertising, gadgets or event creations. Compared to fluorescence, it gives an effect visible in complete darkness without the need for backlighting.

Fluorescent vs photoluminescent printing – comparison of effects and durability

The biggest difference between these two printing techniques is the type of light they need to work. Fluorescent printing only glows when it is illuminated by UV lighting. The print does not glow in the dark on its own. On the other hand, phosphorescent printing glows without electricity after being charged with light. Immunity is also important. Fluorescent paints fade faster under the influence of the sun, which limits their use outdoors. Phosphorizing paints are more stable, although the intensity of the glow gradually decreases with time and exposure to weather conditions. The visual effects also vary. The fluorescent print has neon, bright colors during the day and intensely glowing in the dark when illuminated by UV lamps. Phosphorizing prints glow intensely in the dark in green, blue, red, and during the day they are almost transparent with a delicate residual color. The choice of technology therefore depends on whether we want to get a strong accent in UV light or for a self-glowing print after dark.

Do you want to create a design that will stand out both during the day and after dark?

Contact us and we will advise you on whether fluorescent printing, phosphorescent printing or a combination of both technologies will work better.

Write to us and start creating prints with special effects!